CAREL pCO Small BC00SMW000, BC00SMW000, pCO XS BC00SPW000, pCO BC00XMW000 Blast Chiller User manual
Below you will find brief information for Blast Chiller pCO Small BC00SMW000, Blast Chiller pCO XS BC00SPW000, Blast Chiller pCO BC00XMW000. Blast Chiller is a range of controllers and user terminals for managing the blast chilling, blast freezing and conservation of foodstuffs, in compliance with the relevant standards in force. Additional features include blast chill cycles that are completely customisable by the user, smart defrosts and optimum time management using the built-in clock. Blast Chiller guarantees a reduction in electricity consumption, thus bringing cost reductions and helping to protect the environment.
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User manual
2
IMPORTANT
CAREL bases the development of its products on decades of experience in HVAC, on the continuous investments in technological innovations to products, procedures and strict quality processes with in-circuit and functional testing on 100% of its products, and on the most innovative production technology available on the market. CAREL and its subsidiaries nonetheless cannot guarantee that all the aspects of the product and the software included with the product respond to the requirements of the final application, despite the product being developed according to start-of-the-art techniques.
The customer (manufacturer, developer or installer of the final equipment) accepts all liability and risk relating to the configuration of the product in order to reach the expected results in relation to the specific final installation and/or equipment.
CAREL may, based on specific agreements, acts as a consultant for the positive commissioning of the final unit/application, however in no case does it accept liability for the correct operation of the final equipment/system.
The CAREL product is a state-of-the-art product, whose operation is specified in the technical documentation supplied with the product or can be downloaded, even prior to purchase, from the website www.carel.com
.
Each CAREL product, in relation to its advanced level of technology, requires setup / configuration / programming / commissioning to be able to operate in the best possible way for the specific application. The failure to complete such operations, which are required/indicated in the user manual, may cause the final product to malfunction;
CAREL accepts no liability in such cases.
Only qualified personnel may install or carry out technical service on the product.
The customer must only use the product in the manner described in the documentation relating to the product.
In addition to observing any further warnings described in this manual, the following warnings must be heeded for all CAREL products:
•
Prevent the electronic circuits from getting wet. Rain, humidity and all types of liquids or condensate contain corrosive minerals that may damage the electronic circuits. In any case, the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual.
•
Do not install the device in particularly hot environments. Too high temperatures may reduce the life of electronic devices, damage them and deform or melt the plastic parts. In any case, the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual.
•
•
Do not attempt to open the device in any way other than described in the manual.
Do not drop, hit or shake the device, as the internal circuits and mechanisms may be irreparably damaged.
•
•
Do not use corrosive chemicals, solvents or aggressive detergents to clean the device.
Do not use the product for applications other than those specified in the technical manual.
All of the above suggestions likewise apply to the controllers, serial boards, programming keys or any other accessory in the CAREL product portfolio.
CAREL adopts a policy of continual development. Consequently, CAREL reserves the right to make changes and improvements to any product described in this document without prior warning.
The technical specifications shown in the manual may be changed without prior warning.
The liability of CAREL in relation to its products is specified in the CAREL general contract conditions, available on the website www.carel.com
and/or by specific agreements with customers; specifically, to the extent where allowed by applicable legislation, in no case will CAREL, its employees or subsidiaries be liable for any lost earnings or sales, losses of data and information, costs of replacement goods or services, damage to things or people, downtime or any direct, indirect, incidental, actual, punitive, exemplary, special or consequential damage of any kind whatsoever, whether contractual, extra-contractual or due to negligence, or any other liabilities deriving from the installation, use or impossibility to use the product, even if CAREL or its subsidiaries are warned of the possibility of such damage.
DISPOSAL
INFORMATION FOR USERS ON THE CORRECT HANDLING OF
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
In reference to European Union directive 2002/96/EC issued on 27 January 2003 and the related national legislation, please note that:
• WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately;
• the public or private waste collection systems defined by local legislation must be used. In addition, the equipment can be returned to the distributor at the end of its working life when buying new equipment;
• the equipment may contain hazardous substances: the improper use or incorrect disposal of such may have negative effects on human health and on the environment;
• the symbol (crossed-out wheeled bin) shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be disposed of separately;
• in the event of illegal disposal of electrical and electronic waste, the penalties are specified by local waste disposal legislation
KEY TO THE ICONS
NOTE: to bring attention to a very important subject; in particular, regarding the practical use of the various functions of the product.
IMPORTANT: to bring critical issues regarding the use of the Blast Chiller to the attention of the user.
TUTORIAL: some simple examples to accompany the user in configuring the most common settings.
3
4
Contents
1 INTRODUCTION.......................................................................................................................................................................................................7
1.1
Main features ........................................................................................................................................................................................................7
1.2
Models and features .............................................................................................................................................................................................7
1.3
Components and accessories ..............................................................................................................................................................................7
1.4
Description of the pCO
3
Small board....................................................................................................................................................................7
1.5
Description of the pCO
XS
board ..........................................................................................................................................................................10
2 INSTALLATION......................................................................................................................................................................................................13
2.1
General installation instructions..........................................................................................................................................................................13
2.2
Power supply ......................................................................................................................................................................................................13
2.3
Connecting the analogue inputs .........................................................................................................................................................................13
2.4
Connecting the digital inputs ..............................................................................................................................................................................14
2.5
Connecting the analogue outputs.......................................................................................................................................................................15
2.6
Connecting the digital outputs ............................................................................................................................................................................16
3 USER INTERFACE.................................................................................................................................................................................................17
3.1
Graphic terminals ...............................................................................................................................................................................................17
3.2
Navigation buttons..............................................................................................................................................................................................18
4 FUNCTIONS ...........................................................................................................................................................................................................19
4.1
Chill and freeze cycles........................................................................................................................................................................................19
4.2
Temperature control ...........................................................................................................................................................................................20
4.3
Compressor management ..................................................................................................................................................................................21
4.4
Fan management ...............................................................................................................................................................................................22
4.5
Defrost ................................................................................................................................................................................................................23
4.6
HACCP (Hazard Analysis and Critical Control Point).........................................................................................................................................25
4.7
Lights ..................................................................................................................................................................................................................26
4.8
Auxiliary output ...................................................................................................................................................................................................26
4.9
Antifreeze ...........................................................................................................................................................................................................26
4.10
ON/OFF ..............................................................................................................................................................................................................26
4.11
Sterilisation .........................................................................................................................................................................................................26
4.12
Heat probe ..........................................................................................................................................................................................................26
5 DESCRIPTION OF THE MENUS ...........................................................................................................................................................................27
5.1
On/Off...........................................................................................................................................................................................................28
5.2
5.3
5.4
Cycle ............................................................................................................................................................................................................28
Conservation ................................................................................................................................................................................................28
Sterilisation...................................................................................................................................................................................................28
5.5
5.6
5.7
5.8
Heat probe ...................................................................................................................................................................................................29
Settings ........................................................................................................................................................................................................29
Maintenance.................................................................................................................................................................................................29
Clock ............................................................................................................................................................................................................30
5.9
Data log ........................................................................................................................................................................................................30
5.10
Lock keypad .................................................................................................................................................................................................30
6 TABLE OF PARAMETERS ....................................................................................................................................................................................31
7 TABLE OF ALARMS..............................................................................................................................................................................................39
7.1
High and low temperature alarm ........................................................................................................................................................................39
8 TABLE OF VARIABLES SENT TO THE SUPERVISOR .......................................................................................................................................40
9 CONFIGURATIONS ...............................................................................................................................................................................................43
1 INTRODUCTION
1.1 Main features
Blast Chiller is a complete range of controllers and user terminals for managing the blast chilling, blast freezing and conservation of foodstuffs, in compliance with the relevant standards in force. Additional features include blast chill cycles that are completely customisable by the user, smart defrosts and optimum time management using the built-in clock.
Blast Chiller is based on the pCO series programmable platform (one version on the pCO
3
Small and one on the pCO
XS)
and features a graphic interface (pGD1 series) and a simple and user-friendly menu for navigation through three levels of access, protected by password. Unlike traditional controllers, Blast Chiller guarantees a reduction in electricity consumption, thus bringing cost reductions and helping to protect the environment.
1.2 Models and features platform pCO
3
Small pCO
XS terminal analogue inputs digital inputs digital outputs analogue outputs standard cycles custom cycles conservation phase graphic display languages real time clock
HACCP report programming with key rear panel assembly with membrane keypad up to 5 (NTC, up to 2 pt1000) up to 8 up to 8 up to 4
X
X
X
X
5*
X
X
X supervision X printer X buzzer X
RS485 option X certification CE, UL
*languages available: ITA, ENG, FRA, ESP, DEU.
X
X
X
X
X
X
5* panel installation with plastic faceplate up to 5 (NTC, up to 2 pt1000) up to 8 up to 8 up to 4
X
X
X
X
X
CE, UL
X
X
X
X
X
X
5* rear panel assembly with membrane keypad up to 4 (NTC) up to 6 up to 5 up to 3
X panel installation with plastic faceplate up to 4 (NTC) up to 6 up to 5 up to 3
X
X
X
X
5*
X
X
X
X X
X X
X X
X X
CE, UL CE, UL
1.3 Components and accessories description code
Blast Chiller - pCO xs
with display, panel mounting with plastic faceplate BC00SMW000
Blast Chiller - pCO xs
with display, rear panel assembly with membrane keypad
Blast Chiller - pCO
3
with display, panel mounting with plastic faceplate
Blast Chiller - pCO
3
with display, rear panel assembly with membrane keypad
BC00XMW000
BC00SPW000
BC00SMW000 connection cable display-panel with plastic faceplate
NTC piercing probe, 6 m cable, range -50T110 °C
NTC piercing probe, 90° with handle, 6 m cable, range -50T110 °C
S90CONN00* (see corresponding paragraph)
NTCINF0600
NTCINF0610
NTC piercing probe, 90° with handle, 3 m cable, range -50T110 °C
PT1000 piercing probe, 90° with handle, 6 m cable, range -50T200 °C printer kit
NTCINF0340
PT1INF0340
BCOPZPRN00
1.4 Description of the pCO
3
Small board
Key
1
2
3
10
11
12
13
14
15
7
8
9
4
5
6 power supply connector [G (+), G0 (-)]; yellow power LED and 3 status LEDs; additional power supply for the terminal and 0 to 5 V ratiometric probes; universal analogue inputs: NTC, 0 to 1 V, 0 to 5 V - ratiometric, 0 to 10 V, 0 to
20 mA, 4 to 20 mA; passive analogue inputs: NTC, PT1000, ON/OFF;
0 to 10 V analogue outputs;
24 Vac/Vdc digital inputs;
230 Vac or 24 Vac/Vdc digital inputs; connector for the display panel (external with direct signals); connector for all standard pCO series terminals and for downloading the application program; relay digital outputs; connector for connection to the I/O expansion board; pLAN network connector; cover for inserting the supervisor and telemaintenance option; cover for inserting the field card option;
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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1.4.1 Meaning of the inputs/outputs on the pCO
3
Small board
J13-5
J14-1
J14-2
J14-3
J15-1
J15-2
J15-3
J24-1
J24-2
J12-3
J12-4
J12-5
J13-1
J13-2
J13-3
J13-4
J5-4
J5-5
J5-6
J5-7
J5-8
J5-9
J9
J10
J11-1
J11-2
J11-3
J12-1
J12-2
J4-3
J4-4
J4-5
J4-6
J5-1
J5-2
J5-3
J2-5
J3-1
J3-2
J3-3
J3-4
J4-1
J4-2
Connector Signal Description
J1-1 G +24 Vdc or 24 Vac power supply
J1-2
J2-1
G0
B1 power supply reference universal analogue input 1 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)
J2-2
J2-3
J2-4
B2
B3
GND universal analogue input 2 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA) universal analogue input 3 (NTC, 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA) common for analogue inputs
+VDC
B4
BC4
B5
BC5
VG
VG0
21 Vdc power supply for active probes (maximum current 200 mA) passive analogue input 4 (NTC, PT1000, ON/OFF) common for analogue input 4 passive analogue input 5 (NTC, PT1000, ON/OFF) common for analogue input 5 power to optically-isolated analogue output, 24 Vac/Vdc power to optically-isolated analogue output, 0 Vac/Vdc
Y1
Y2
Y3
Y4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
RX-/TX-
RX+/TX+
GND
C1
NO1 analogue output no. 1, 0 to 10 V analogue output no. 2, 0 to 10 V analogue output no. 3, 0 to 10 V analogue output no. 4, 0 to 10 V digital input no. 1, 24 Vac/Vdc digital input no. 2, 24 Vac/Vdc digital input no. 3, 24 Vac/Vdc digital input no. 4, 24 Vac/Vdc digital input no. 5, 24 Vac/Vdc digital input no. 6, 24 Vac/Vdc digital input no. 7, 24 Vac/Vdc digital input no. 8, 24 Vac/Vdc common for digital inputs from 1 to 8 (negative pole for DC power supply)
8-pin telephone connector for connection to a display panel
6-pin telephone connector for connection to the standard user terminal
RX-/TX- connector for connection, over RS485, to the pLAN network
RX+/TX+ connector for connection, over RS485, to the pLAN network
GND connector for connection, over RS485, to the pLAN network common relay: 1, 2, 3 normally open contact, relay no. 1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
+V term
GND normally open contact, relay no. 2 normally open contact, relay no. 3 common relay: 1, 2, 3 common relay: 4, 5, 6 normally open contact, relay no. 4 normally open contact, relay no. 5 normally open contact, relay no. 6 common relay: 4, 5, 6 common relay no. 7 normally open contact, relay no. 7 common relay no. 7 normally open contact, relay no. 8 common relay no. 8 normally closed contact relay no. 8 power supply to additional Aria terminal power supply common
J24-3 +5 Vref power supply for 0/5 V ratiometric probes
1.4.2 Technical specifications of the pCO
3
Small board
Analogue inputs
Analogue conversion
Maximum number
Type
10-bit A/D converter embedded in CPU
5
Universal: 6 (inputs B1, B2, B3, B6, B7, B8)
-CAREL NTC (-50T90°C; R/T 10k
Ω±1% at 25°C) or HT NTC (0T150°C)
-Voltage: 0 to 1 Vdc, 0 to 5 Vdc ratiometric or 0 to 10 Vdc
-Current: 0 to 20 mA or 4 to 20 mA. Input resistance: 100
Ω
Can be selected via software.
Passive: 4 (inputs B4, B5, B9, B10)
-CAREL NTC (-50T90°C; R/T 10k
Ω ±1% at 25°C),
-PT1000 (-100T200°C; R/T 1k
Ω to 0°C) or digital input from voltage-free contact
Can be selected via software.
Normally open (open-closed-open)
Minimum normally-open voltage-free digital input detection time
Normally closed (closed-open-closed)
NTC input precision ± 0.5°C
PT1000 input precision
0-1V input precision
± 1°C
± 3mV
0-10V input precision
0-5V input precision
0-20 mA input precision
± 30mV
± 15mV
± 0.06 mA
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
8
250ms
250ms
ENG
ENG
Important: the 21Vdc available at the +Vdc terminal (J2) can be used to power any active probes. The maximum current is 150 mA, thermally protected against short-circuits. To supply the 0 to 5 V ratiometric probes, use the 5V available at terminal +5Vref (J24). The maximum current is 60 mA.
Digital inputs
Type optically-isolated
Maximum number no. of optically-isolated inputs at 24 Vac
50/60 Hz or 24Vdc
8
Total
8
Minimum digital input impulse detection time
Power supply to the inputs
Classification of the measurement circuits
(IEC EN 61010-1)
Normally open (open-closed-open)
Normally closed (closed-open-closed)
External
200 ms
400 ms
230 Vac or 24 Vac (50/60 Hz) +10/-15%
24Vdc +10/-20%
Category 1 24 Vac/Vdc
Category 2 230 Vac
Analogue outputs
Type optically-isolated
Maximum number
Power supply
4 x 0 to 10 Vdc outputs (Y1-Y4) external
Precision outputs Y1-Y4 outputs Y5-Y6
SMALL
24 Vac/Vdc
± 2% of full scale
-2/+5% of full scale
Settling time
Maximum load
Digital outputs outputs Y1-Y4 outputs Y5-Y6
1 k
Ω (10mA)
2s
2s or 15s selected via software
Insulation distance
Makeup of the groups
Number of changeover contacts
Switchable power
The outputs can be divided into groups. Between groups (cells in the table) there is double insulation and consequently these may have different voltages.
There is also double insulation between each terminal of the digital outputs and the rest of the controller. The relays belonging to the same group (individual cell in the table) have basic insulation and therefore must have the same power supply (24 Vac or 230 Vac).
Reference for the relays with the same insulation
Type of relay
Group 1
1 to 7
Type A
Group 2
8
Type A
1 (output 8);
Type A relay
Relay ratings
PCO
3
approval
SPDT, 2000VA, 250Vac, 8 A resistive
UL873
EN 60730-1
2.5 A resistive, 2 A FLA, 12 A LRA, 250Vac, C300 pilot duty (30,000 cycles)
2 A resistive, 2 A inductive, cos ϕ=0.6, 2(2)A (100,000 cycles)
1 (output 7);
Max number of SSR outputs
Important: the groups that the digital outputs are divided into have two common pole terminals to simplify wiring; make sure that the current running through the common terminals does not exceed the rated current of an individual terminal, that is, 8 A.
1.4.3 Mechanical specifications of the pCO
3
Small board
Mechanical dimensions: 13 DIN modules 110 x 227.5 x 60mm
Plastic case:
Assembly Fitted on DIN rail as per DIN 43880 and IEC EN 50022
Material Technopolymer
Flame retardance
Ball pressure test
Resistance to creeping current
Colour
1.4.4 Other specifications of the pCO
3
Small board
V0 (UL94) and 960°C (IEC 695)
125°C
≥ 250 V
Grey RAL7035
Operating conditions
Storage conditions
Index of protection
Environmental pollution
Class according to protection against electric shock
PTI of the insulating materials
Period of stress across the insulating parts
Type of action
Type of disconnection or microswitching
Category of resistance to heat and fire
Immunity against voltage surges
Ageing characteristics (operating hours)
No. of automatic operating cycles
-25T70°C, 90% rH non-condensing
-40T70°C, 90% rH non-condensing
IP20, IP40 on the front panel only
2 to be integrated into Class 1 and/or 2 appliances
250 V long
1C microswitching, for all relay outputs
Category D
Category 1
80,000
100,000 (EN 60730-1); 30,000 (UL 873)
Category of immunity to voltage surges (IEC EN 61000-4-5) Category 2
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
9
1.4.5 Electrical specifications of the pCO
3
Small board
Power supply
Maximum current with terminal connected
Type of insulation of the power supply from the rest of the cont.
Terminal block
Cable cross-section
CPU
Program memory (FLASH MEMORY)
Data memory (RAM)
T buffer memory (EEPROM MEMORY)
P parameter memory (EEPROM MEMORY)
Working cycle duration (application of average complexity)
Clock with battery
1.4.6 Dimensions of the pCO
3
Small
24 Vac +10/-15% 50/60 Hz and 28 to 36 Vdc +10/-20%
40 VA (Vac) / 15 W (Vdc)
- with male/female plug-in connectors (250Vac max, 8 A max) min 0.5 mm
2
– max 2.5 mm
2
H8S2320, 16 bit, 24 MHz
2+2 MB (Dual Bank) x 16 bits
512 KB x 16 bits
13 KB
32 KB not visible from the pLAN network
0.2 s standard
ENG
Product certification:
IEC EN 50155 standard: “Railway applications • Electronic equipment used on rolling stock”;
UL 873 and C22.2 No. 24-93: “Temperature-Indicating and -Regulating Equipment”;
EC regulations 37/2005 of 12 January 2005; in particular, if the electronic controller is fitted with standard Carel NTC sensors, it is compliant with standard EN13485 on
“Thermometers for measuring the air temperature in applications on units for the conservation and sale of refrigerated, frozen and deep-frozen food and ice cream”.
1.5 Description of the pCO
XS
board
1.5.1 Meaning of the inputs/outputs on the pCO
XS
board
connector
J1-1
J1-2
J2-1
J2-2
J2-3
J2-4
J2-5
J2-6
J2-7
J2-8
J3-1
J3-2
J3-3 signal
G
G0
SYNC
B1
B2
B3
B4
GND
+5VREF
+24VDC
Y1
Y2
Y3 description
24 Vac or 20/60 Vdc power supply power supply reference synchronicity input for phase control (G0 is the reference) universal analogue input 1 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA) universal analogue input 2 (NTC, 0/1V, 0/5 V, 0/20 mA, 4/20 mA) universal analogue input 3 (NTC, 0/5 V) universal analogue input 4 (NTC, 0/5 V) reference for analogue inputs power supply for 0/5 V ratiometric probes power supply for 24 Vdc active probes analogue output no. 1, 0/10 V analogue output no. 2, 0/10 V analogue output no. 3, PWM (for phase cutting speed controllers)
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
10
Key
1 Power supply connector [G (+), G0 (-)] 24 Vac or 20/60 Vdc;
2
3
4
Input (24 Vac) for phase control and NTC, 0/1 V,
0/5 V, 0/20 mA, 4/20 mA analogue inputs, +5Vref for power supply to 5V ratiometric probe and +24Vdc power to active probes;
0 to 10 V analogue outputs and PWM phase control output;
Digital inputs with voltage-free contact;
5
6
7
8
Connector for all standard pCO* series terminals and for downloading the application program; pLAN network connector; tLAN terminal connector; tLAN network or MP-Bus connector;
9 Relay digital outputs with one common;
10 Relay/SSR digital output;
11 Digital output for alarm relay with changeover contact/SSR;
12 Yellow power LED and 3 status LEDs
13 Cover for inserting the supervisor and telemaintenance option
14 Cover for inserting the clock board;
J4-6
J4-7
J5
J6-1
J6-2
J6-3
J7
J3-4
J4-1
J4-2
J4-3
J4-4
J4-5
J8-1
J8-2
J9-1
J9-2
J9-3
J9-4
J10-1
J10-2
J11-1
J11-2
J11-3
TLAN
GND
C1
NO1
NO2
NO3
C4
NO4
NO5
C5
NC5
GND
ID1
ID2
ID3
ID4
ID5
ID6
IDC1
RX-/TX-
RX+/TX+
GND reference for analogue output digital input no. 1 digital input no. 2 digital input no. 3 digital input no. 4 digital input no. 5 digital input no. 6 common for digital inputs from 1 to 6
6-pin telephone connector for connection to the standard user terminal
RX-/TX- connector for connection, over RS485, to the pLAN network
RX+/TX+ connector for connection, over RS485, to the pLAN network reference for connection, over RS485, to the pLAN network tLAN terminal connector tLAN network connector reference for connection to the tLAN network common relay: 1, 2, 3 normally open contact, relay no. 1 normally open contact, relay no. 2 normally open contact, relay no. 3 common relay: 4 normally open contact, relay no. 4 normally open contact, relay no. 5 common relay: 5 normally closed contact relay no. 5
1.5.2 Technical specifications of the pCO
XS
board
Analogue inputs
Analogue conversion
Maximum number
Type
Time constant for each input
NTC input precision
0-1V input precision
0-5V input precision
0-20 mA input precision
10-bit A/D converter embedded in CPU
4
Universal: 2 (inputs B1,B2)
-CAREL NTC (-50T90°C; R/T 10k
Ω±1% at 25°C)
-Voltage 0 to 1 Vdc, 0 to 5 Vdc ratiometric;
-Current 0 to 20 mA or 4 to 20 mA. Input resistance: 100
Ω
Can be selected via software
Universal: 2 (inputs B3,B4)
-CAREL NTC (-50T90°C; R/T 10k
Ω±1% at 25°C)
-Voltage 0 to 5 Vdc ratiometric
Can be selected via software
1 s
± 0.5°C
± 3mV
± 15mV
± 0.06 mA
ENG
Important: the 24Vdc available at the +24Vdc terminal (J2) can be used to power any active probes. The maximum current is 80 mA, thermally protected against short-circuits. To supply the 0 to 5 V ratiometric probes, use the 5V available at terminal +5Vref (J2). The maximum current is 60 mA.
Digital inputs
Maximum number
Minimum digital input impulse detection time
Power supply to the inputs
Analogue outputs no. of optically-isolated inputs at 24 Vac 50/60 Hz or
24Vdc
6
Normally open (open-closed-open)
Normally closed (closed-open-closed) internal
150 ms
400 ms
Total
6
Maximum number
Power supply
Precision
2 x 0 to 10 Vdc outputs (Y1 and Y2) and
1 PWM output (Y3) with 5V pulse of programmable duration internal outputs Y1-Y2 ± 3% of full scale
Settling time
Maximum load outputs Y1-Y2
1 k
Ω (10mA) for 0 to 10 Vdc and 470Ω (10mA) for PWM
2s
Note: the synchronicity for the PWM phase control output is taken from SYNC and G0. The PWM output (Y3) can become a pulse modulation input (pulse duration proportional to the analogue value) by setting the software. The PWM may be in synchronicity with the SYNC signal or have a fixed cycle of 2 ms
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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Digital outputs
ENG
Insulation distance
-
Makeup of the groups
Type of relay
Number of changeover
The outputs can be divided into groups. Between groups (cells in the table) there is double insulation and consequently these may have different voltages. There is also double insulation between each terminal of the digital outputs and the rest of the controller. The relays belonging to the same group (individual cell in the table) have basic insulation and therefore can have the same power supply (24 Vac or 230 Vac).
Reference for the relays with the same insulation
Version
Group 1 Group 2
1 to 3
Type A
4
Type A
Group 3
5
Type A
Switchable power
Maximum number of
SSR outputs
Relay ratings SPDT, 2000VA, 250Vac, 8 A resistive
Type A relay PCO xs
approval
UL873
EN 60730-1
2.5 A resistive, 2 A FLA, 12 A LRA, 250Vac, (30,000 cycles)
2 A resistive, 2 A inductive, cos ϕ=0.6, 2(2)A (100,000 cycles)
2: outputs 4 and 5;
Electrical specifications: working voltage 24 Vac/Vdc, maximum switchable power 10 Watts
Important: the groups that the digital outputs are divided into have two common pole terminals to simplify wiring.
Make sure that the current running through the common terminals does not exceed the rated current of an individual terminal, that is, 8A.
1.5.3 Mechanical specifications of the pCO
XS
board
Mechanical dimensions
Plastic case
Assembly
Material
Flame retardance
Ball pressure test
Resistance to creeping current
Colour
1.5.4 Other specifications of the pCO
XS
board
13 DIN modules 110 x 227.5 x 60mm
Fitted on DIN rail as per DIN 43880 and IEC EN 50022 technopolymer
V0 (UL94) and 960°C (IEC 695)
125°C
± 250 V
Grey RAL7035
Operating conditions
Storage conditions
Index of protection
Environmental pollution
Class according to protection against electric shock
PTI of the insulating materials
Period of stress across the insulating parts
Type of action
Type of disconnection or microswitching
Category of resistance to heat and fire
Immunity against voltage surges
Ageing characteristics (operating hours)
No. of automatic operating cycles
-10T60°C, 90% rH non-condensing (standard vers.) -25T70°C, 90% rH non-condensing (extended range vers.)
-20T70°C, 90% rH non-condensing (standard vers.) -40T70°C, 90% rH non-condensing (extended range vers.)
IP20, IP40 on the front panel only
2 to be integrated into Class 1 and/or 2 appliances
250 V long
1C microswitching, for all relay outputs
Category D
Category 1
80,000
100,000 (EN 60730-1); 30,000 (UL 873)
Category of immunity to voltage surges (IEC EN 61000-4-5) Category 2
1.5.5 Electrical specifications of the pCO
XS
board
Power supply
Maximum current with terminal connected
Type of insulation of the power supply by the rest of the contr.
Terminal block
Cable cross-section
CPU
Program memory (FLASH MEMORY)
Data memory (RAM)
T buffer memory (FLASH MEMORY)
P parameters memory (EEPROM MEMORY)
Working cycle duration (application of average complexity)
Clock with battery
1.5.6 Dimensions of the pCO
xs
24 Vac +10/-15% 50/60 Hz and 24…48Vdc +10/-20%
P=8W functional with male/female plug-in connectors (250Vac max, 8 A max) min 0.5 mm
2
– max 2.5 mm
2
H8S2320, 16 bit, 24 MHz
1 MB x 16 bit (expandable up to 1+1MB Dual Bank)
128 KB x 8 bit (expandable up to 512 KB)
4 KB x 16 bit
32 KB not visible from the pLAN network
0.3 s
Optional
Product certification:
IEC EN 50155 standard: “Railway applications • Electronic equipment used on rolling stock”;
UL 873 and C22.2 No. 24-93: “Temperature-Indicating and -Regulating Equipment”;
EC regulations 37/2005 of 12 January 2005; in particular, if the electronic controller is fitted with standard Carel NTC sensors, it is compliant with standard EN13485 on
“Thermometers for measuring the air temperature in applications on units for the conservation and sale of refrigerated, frozen and deep-frozen food and ice cream”.
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12
ENG
2.1 General installation instructions
2.1.1 Installation procedure
Environmental conditions
Avoid assembling the pCO and the terminal in environments with the following characteristics:
• temperature and humidity that do not conform to the rated operating data of the product;
• strong vibrations or knocks;
• exposure to aggressive and polluting atmospheres(e.g.: sulphur and ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or oxidation;
• strong magnetic and/or radio frequency interference (there avoid installing the units near transmitting antennae);
• exposure of the pCO to direct sunlight and to the elements in general;
• large and rapid fluctuations in the room temperature;
• environments containing explosives or mixes of flammable gases;
• exposure to dust (formation of corrosive patina with possible oxidation and reduction of insulation).
Positioning the instrument inside the panel
The position of the instrument in the electrical cabinet must be chosen so as to guarantee correct physical separation of the instrument from the power components (solenoids, contactors, actuators, inverters, ...) and the connected cables. Proximity to such devices/cables may create random malfunctions that are not immediately evident.
The structure of the panel must allow the correct flow of cooling air.
2.1.2 Wiring procedure
When laying the wiring, "physically " separate the power part from the control part. The proximity of these two sets of wires will, in most cases, cause problems of induced disturbance or, over time, malfunctions or damage to the components. The ideal solution is to house these two circuits in two separate cabinets. Sometimes this is not possible, and therefore the power part and the control part must be installed inside the same panel. For the control signals, it is recommended to use shielded cables with twisted wires.
If the control cables have to cross over the power cables, the intersections must be as near as possible to 90 degrees, always avoiding running the control cables parallel to the power cables.
•
Use cable ends suitable for the corresponding terminals. Loosen each screw and insert the cable ends, then tighten the screws. When the operation is completed, slightly tug the cables to check they are sufficiently tight;
• separate as much as possible the sensor signal, digital input and serial line cables from the cables carrying inductive loads and power cables to avoid possible electromagnetic disturbance. Never insert power cables (including the electrical cables) and probe signal cables in the same conduits. Do not install the sensor cables in the immediate vicinity of power devices
(contactors, circuit breakers or similar);
• reduce the path of the sensor cables as much as possible, and avoid spiral paths that enclose power devices;
• power supplies other than those specified seriously damage the system;
• a Class 2 safety transformer, rating 50 VA, must be used in the installation to supply just one pCO controller;
• the power supply to the pCO controller and terminal (or pCO controllers and terminals) should be separated from the power supply to the other electrical devices (contactors and other electromechanical components) inside the electrical panel;
• if the power transformer secondary is earthed, check that the earth wire corresponds to the wire that runs to the controller and enters terminal G0.
This applies to all the devices connected to the pCO;
• a yellow LED indicates that power is connected to the pCO.
2 INSTALLATION
• avoid touching or nearly touching the electronic components fitted on the boards to avoid electrostatic discharges (extremely damaging) from the operator to the components;
• if the power transformer secondary is earthed, check that the earth wire corresponds to the wire that runs to the controller and enters terminal G0; this applies to all the devices connected to the pCO;
• do not secure the cables to the terminals by pressing the screwdriver with excessive force, to avoid damaging the pCO;
• for applications subject to considerable vibrations (1.5 mm pk-pk 10/55
Hz), secure the cables connected to the pCO around 3 cm from the connectors using clamps;
• if the product is installed in industrial environments (application of the EN
61000-6-2 standard) the length of the connections must be less than 30 m;
• all the very low voltage connections (analogue and 24 Vac/Vdc digital inputs, analogue outputs, serial bus connections, power supplies) must have reinforced or double insulation from the mains network;
• in residential environments, the connection cable between the pCO and the terminal must be shielded;
• there is no limit to the number of cables that can be connected to an individual terminal. The only limitation concerns the maximum current crossing each terminal: this must not exceed 8 A;
• the maximum cross-section of the cable that connected to a terminal is 2.5 sq.m (12 AWG);
• the maximum value of the twisting torque to tighten the screw on the terminal (torque tightening) is 0.6 Nm;
Important:
•
Installation must be performed according to the standards and legislation in force in the country where the device is used;
• for safety reasons the equipment must be housed inside an electrical panel, so that the only accessible part is the display and the keypad;
• in the event of malfunctions, do not attempt to repair the device, but rather contact the CAREL service centre;
• the connector kit also contains the stick-on labels.
2.1.3 Anchoring the pCO
The pCO is installed on a DIN rail. To fasten the unit to the DIN rail, press it lightly against the rail. The rear tabs will click into place, locking the unit to the rail. Removing the unit is just as simple, using a screwdriver through the release slot to lever and lift the tabs. The tabs are kept in the locked position by springs.
2.2 Power supply
Power supply to the pCO
3
(controller with terminal connected)
Power supply to the pCO
XS
28 to 36 Vdc +10/-20% or 24 Vac +10/-
15% 50 to 60 Hz;
Maximum current P= 15 W (Vdc power supply). P=40 VA (Vac)
20/60 Vdc or 24 Vac ± 15% 50 to 60 Hz;
Maximum current P= 6.1 W (Vdc).
P=8VA (Vac)
2.3 Connecting the analogue inputs
The analogue inputs on the pCO can be configured for the more common sensors on the market: 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA. The different types of sensors can be selected by setting a parameter on the user terminal.
2.3.1 Connecting the universal NTC temperature sensors
The analogue inputs are compatible with 2-wire NTC sensors. The inputs must be preconfigured for NTC signals by the application program resident in the flash memory. The connection diagram is shown below:
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ENG
Controller pCO
3 pCO terminals
GND, BC4, BC5, BC9, BC10
NTC sensor cable
1
B1, B2, B3, B4, B5, B6, B7, B8, B9, B10 2 pCO
XS
GND 1
B1, B2, B3, B4, 2
Important: the two wires of the NTC sensors are equivalent, as they have no polarity, therefore it is not necessary to follow any specific order when connecting to the terminal block.
2.3.2 Connecting the PT1000 temperature sensors
The pCO can be connected to 2-wire PT1000 sensors for all high temperature applications; the range of working is: -100 to 200 °C.
The inputs must be pre-configured for PT1000 signals by the application program resident in the flash memory.
The connection diagram is shown below:
Controller pCO
3
B4 B5 B9 B10 pCO xs
PT1000 sensor cable sensor 1 sensor 2 sensor 3 probe 4
BC4 BC5 BC9 BC10 1
2
Important:
• for correct measurements using the PT1000 sensor, each sensor wire must be connected to an individual terminal, as shown in Figure 4.c;
• the two wires of the PT1000 sensors are equivalent, as they have no polarity, therefore it is not necessary to follow any specific order when connecting to the terminal block.
2.3.3 Connecting the analogue inputs selected as ON/OFF
The pCO allows some analogue inputs to be configured as voltage-free digital inputs.
The inputs must be pre-configured as voltage-free digital inputs by the application program resident in the flash memory.
Controller pCO
3 pCO xs digit 1 digit 2 digit 3 digit4
BC4 BC5 BC9 BC10
B4 B5 B9 B10
1
2
Digital input cable
Warning: the maximum current available at the digital input is 5 mA (thus the rating of the external contact must be at least 5 mA). These inputs are not optically isolated.
2.3.4 Remote connection of the analogue inputs
The sizes of the cables for the remote connection of the analogue inputs are shown in the following table: type of input size (mm
2
) for length up to
50 m size (mm
2
) for length up to
100 m
NTC 0.5
PT1000 0.75
1.0
1.5
I (current)
V (voltage)
0.25
0.25
0.5
0.5
If the product is installed in industrial environments (application of the EN 61000-6-2 standard) the length of the connections must be less than 30 m. This length shouldn’t be exceeded in any case, to avoid measurement errors.
2.4 Connecting the digital inputs
The pCO features digital inputs for connecting safety devices, alarms, device status, remote switches. These inputs are all optically isolated from the other terminals. They can work at 24 Vac, 24 Vdc and some at 230 Vac.
Note: separate the sensor signal and digital input cables as much as possible from the inductive load and power cables, to avoid possible electromagnetic disturbance.
Important: if the control voltage is drawn in parallel with a coil, fit a dedicated RC filter in parallel with the coil (the typical ratings are 100
Ω, 0.5 µF, 630 V).
If connecting the digital inputs to safety systems (alarms), remember that: the presence of voltage across the contact must be the normal operating condition, while no voltage must represent an alarm situation. This will ensure that any interruption (or disconnection) of the input will also be signalled. Do not connect the neutral in place of an open digital input. Always interrupt the phase. The 24 Vac/Vdc digital inputs have resistance of around 5 k
Ω.
2.4.1 Digital input connections for the pCO
3
The following figure represents one of the most common diagrams for connecting the
24 Vac and 24 Vdc digital inputs on a pCO
3
.
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14
To maintain the optical isolation of the digital inputs, a separate power supply must be used just for the digital inputs
The connection diagrams shown in these figures, which while being the more common and the more convenient, do not exclude the possibility of powering the digital inputs independently from the power supply to the pCO.
In any case, the inputs only have functional insulation from the rest of the controller.
2.4.2 Connecting the digital inputs for the pCO
XS
The following figure shows the diagram for connecting the digital inputs.
ENG
size (mm
2
) for length up to 50 m size (mm
2
) for length until 100 m
0.25 0.5
If the product is installed in industrial environments (application of the EN 61000-6-2 standard) the length of the connections must be less than 30 m.
This length shouldn’t be exceeded in any case, to avoid measurement errors.
2.5 Connecting the analogue outputs
2.5.1 Connecting the 0 to 10V analogue outputs
The pCO provides 0 to 10 V optically-isolated analogue outputs, powered externally at
24Vac/Vdc. Fig. 4.n shows the electrical connection diagram; the 0V (zero) of the power supply is also the reference for the output voltage.
The table below shown summarises the distribution of the analogue outputs according to the version available. no. of analogue outputs pCO
3
terminals Y1, Y2, Y3, Y4 pCO
XS
terminals Y1, Y2 reference
VG0
G0
Important: on the pCO
XS
the outputs are not optically isolated. Remember, on the other hand, that the pCO
XS
power supply is insulated.
2.5.2 Connecting the PWM analogue outputs
The pCO
XS provides a PWM analogue output for phase cutting speed controllers. The following figure shows the wiring diagram and the two most common connection examples.
2.4.3 Remote connection of the digital inputs
Important note: do not connect other devices to the IDn inputs.
The sizes of the cables for the remote connection of the digital inputs are shown in the following table:
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no. of analogue outputs reference pCO
3
terminals not available pCO
XS
terminals Y3 G0
Note: the power supply to the circuit measuring the zero crossing is at terminal
SYNC on the pCO
XS and must be 24 Vac, in phase with the power supply to the actuator: for three-phase power supply, use the same phase to power the pCO
XS
and the actuator.
2.5.3 Optional modules
The module is used to convert a PWM output (5 V pulses) to a linear 0 to 10 V and 4 to
20 mA analogue output (code CONV0/10A0).
The control signal (at the input terminals optically-isolated from the rest of the module) must have a maximum amplitude of 5V and a period between 8 ms and 200 ms. The 0 to 10 V output voltage can be connected to a maximum load of 2 k
Ω, with a maximum ripple of 100 mV.
The 4 to 20 mA output current can be connected to a maximum load of 280
Ω, with maximum overshoot of 0.3 mA.
The mechanical dimensions of the module are 87x36x60 mm (2 DIN modules) with
IP20 index of protection.
Module for converting a 0 to 10 V analogue output to an SPDT digital output
(code CONVONOFF0)
The module is used to convert a 0 to 10 V analogue output (Yn) to an ON/OFF relay output. The control signal Yn (at the input terminals optically-isolated from the rest of the module), to ensure the switching of the relay from OFF to ON, must have a maximum amplitude of 3.3V. The relay is SPDT, with max current of 10 A and max inductive load of 1/3 HP. The mechanical dimensions of the module are 87x36x60 mm
(2 DIN modules) with IP20 index of protection.
2.6 Connecting the digital outputs
The pCO features digital outputs with electromechanical relays. For ease of installation, the common terminals of some of the relays have been grouped together. If the following diagram is used, the current at the common terminals must not exceed the rating (nominal current) of a single terminal (8 A).
2.6.1 Electromechanical relay digital outputs
ENG
SSR relay reference pCO
3
terminals 7 pCO
XS
Important: the load of the SSR relay is powered at 24 Vac/Vdc, thus all the other terminals in the group, from 1 to 6, must be powered at 24Vac/Vdc due to the absence of double insulation within the group. Moreover, terminals from 1 to 6 can be powered at 110-230 Vac using a safety transformer (Class 2) for the power supply to the 24
Vac/Vdc load of the SSR relay.
2.6.4 Summary table of digital outputs according to the versions available
SSR contacts contacts ver contacts pCO
3
terminals pCO
XS
terminals
7
4
-
-
1 (8)
1 (5)
2.6.5 Remote connection of the digital outputs
ts
8
5 total no. outpu
1 (7)
2 (4, 5)
The sizes of the cables for the remote connection of the digital outputs are shown in the following table:
20 0.5
15 1.5
2
6
14 2.5 8
If the product is installed in industrial environments (application of the EN 61000-6-2 standard) the length of the connections must be less than 30 m. This length shouldn’t be exceeded in any case, to avoid measurement errors.
The relays are divided into groups, according to the degree of insulation. Inside each group, the relays have just basic insulation and thus must have the same voltage (generally 24V ac or 110 to 230 Vac). Between the groups there is double insulation and thus the groups can have different voltages. There is also double insulation from the rest of the controller.
2.6.2 Changeover outputs
Some relays feature changeover outputs:
Changeover relay reference pCO
3
terminals 8 pCO
XS
terminals 5
2.6.3 Solid state relay (SSR) digital outputs
The pCO also features a version with solid state relays (SSR) for controlling devices that require an unlimited number of switching cycles and thus would not be supported by electromechanical relays. They are dedicated to loads powered at 24 Vac/Vdc with a maximum power Pmax = 10 W.
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3 USER INTERFACE
3.1 Graphic terminals
Blast Chiller features of two types of graphic terminal, one version for flush-mounted or panel installation with plastic faceplate, and another version, with membrane keypad, for assembly behind the panel: terminal with plastic faceplate
Dimensions:
Dimensions:
Display
Backlighting
Graphic resolution
Text modes white LEDs (controlled by “application software”)
132x64 pixels
8 rows x 22 columns (5x7 and 11x15 pixel fonts)
4 rows x 11 columns (11x15 pixel fonts)
Character height or mixed modes
3.5 mm (5x7 pixel fonts)
7.5 mm (11x15 pixel fonts)
Size of the active area 66x32 mm
Size of the display area 72x36 mm
Keypad LEDs
2 programmed by “application software”, red and orange (Menu and Alarm buttons);
4 green (other buttons), used to control the backlighting of the LCD.
Power supply
Voltage: power supply from pCO via telephone connector or from 18/30 Vdc external source protected by external 250 mAT fuse.
Maximum power input: 1.2 W terminal with membrane front panel
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180
Display
Backlighting
Graphic resolution
Text modes
Character height white LEDs (controlled by “application software”)
132x64 pixels
8 rows x 22 columns (5x7 and 11x15 pixel fonts)
4 rows x 11 columns (11x15 pixel fonts) or mixed modes
3.5 mm (5x7 pixel fonts)
7.5 mm (11x15 pixel fonts)
Size of the active area 66x32 mm
Size of the display area 72x36 mm
Keypad LEDs
3 programmed by “application software”, red (Alarm) and green (ON/OFF and repeat cycle buttons);
Power supply
Voltage: power supply from pCO via telephone connector or from 18/30 Vdc external source protected by external 250 mAT fuse.
Maximum power input: 1.2 W
3.1.1 Connecting the user terminal to the pCO board
The typical connection between the pGD terminal and the pCO is made using a 6-wire telephone cable supplied by CAREL (code S90CONN00*, see the table). To make the connection, simply plug the cable into the 6-pin connector on the pCO board (J10 for the pCO
3
and J5 for the pCO
XS
), until it clicks into place. To remove the connector, lightly press the plastic catch and remove the cable. The telephone connector provides both the data link and the power supply to the terminal.
User terminal/interface connection cables length (m) type code
3 telephone connectors S90CONN001
6 telephone S90CONN003
Important: The membrane terminal is on the other hand already connected, via the ribbon cable, to the display interface.
3.1.2 Installing the terminal
To make the connection simply plug the telephone cable into the RJ12 telephone connector on the rear of the terminal, and into connector:
•
•
J5 on the pCO
XS
J10 on the pCO
3
;
.
The address of the terminal can be set in the range between 0 and 32; addresses between 1 and 32 are used by the pLAN protocol, while address 0 identifies the Local terminal protocol, used for point-point connections without graphics and to configure the pCO. The default address is 32. The address of the terminal can only be set after having connected to power supply via the RJ12 connector. To enter configuration mode, press , and together for at least 5 seconds; the terminal will display a screen similar to the following, with the cursor flashing in the top left corner:
Display address setting.........:32
I/O Board
.
To change the address of the terminal (“Display address setting”) proceed as follows, in sequence.
1. Press once: the cursor will move to the “Display address setting” field.
2. Select the desired value using and , and confirm by pressing again.
3. If the value selected is different from the one saved previously, the following screen will be displayed and the new value will be saved to permanent memory.
Display address changed
If the address field is set to 0, the terminal communicates with the pCO board using the
Local terminal protocol, and the “I/O Board address” field is no longer shown, having no meaning.
To change the list of terminals (private and shared) associated with a pCO board, proceed as follows, in sequence:
4. enter configuration mode (see above), pressing , and same time for at least 5 seconds.
at the
5. press twice: the cursor will move to the “I/O Board address” field.
6. select the address of the pCO board being configured and confirm by pressing .
The pCO will then start the configuration procedure, sending a screen similar to the following.
Terminal config
Press ENTER
to continue
7. Press following.
again: the configuration screen will be shown, similar to the
P:01 Adr
Priv/Shared
Trm1 32 Sh
Trm2 02 Pr
Trm3 -- --
8. Change the terminal configuration as required. The button is used to move the cursor from one field to another, while and change the value of the current field. The P:xx field displays the address of the pCO board selected (in the example shown in the figure, this is board 1).
9. To exit the configuration procedure and save the data, select the “Ok?” field, set “Yes” and confirm by pressing .
During the configuration procedure, if the terminal remains inactive (no button pressed) for more than 30 seconds, the pCO board automatically interrupts the procedure without saving any changes.
Important: if during the operation the terminal detects the inactivity of the pCO board being displayed, the display is cancelled completely and a message similar to the following is shown.
I/O board 01 fault
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If the terminal detects the inactivity of the entire pLAN network, that is, no message is received from the network for 10 consecutive seconds, the display is cancelled completely and the following message is shown:
NO LINK
18
To complete the Blast Chiller installation procedure, set the pLAN address on the pCO; the pCO
XS
and pCO
3
controllers do not have dipswitches for setting the pLAN network address: the pLAN address can be set from any pGD1 terminal on the models where fitted.
1. Set address 0 on the terminal (see the previous sections for details on how to select the address).
2. Power down the pCO.
3. Connect the terminal to the pCO.
4. Power up the pCO, pressing the UP and ALARM buttons together on the terminal. After a few seconds, the pCO runs the start-up sequence and the display shows a screen similar to the following:
#################### selftest please wait...
####################
5. From the moment when the screen is displayed, wait 10 seconds and then release the buttons.
6. The pCO interrupts the start-up sequence and shows a configuration screen similar to the following: pLan address: 0
UP: increase
DOWN: decrease
ENTER: save & exit
1) Then change the pLAN address using the UP and DOWN buttons on the terminal.
8. Confirm the address by pressing the ENTER button: the pCO completes the start-up sequence and uses the address specified.
Important: for the Blast Chiller the pLAN address of the controller needs to be set to 1 and the terminal to 2; the latter needs to be set as private for board 1. if the settings have not been made correctly, the text and the images on the display will be shown in an incorrect and unorderly manner.
3.2 Navigation buttons
- Alarm
- Menu
- Esc
- Up
- Down
- Enter
- On/Off**
displays the list of alarms. used to enter the main menu tree. returns to the previous screen. scrolls a list upwards or increases the value shown on the display. scrolls a list downwards or decreases the value shown on the display. enters the selected submenu or confirms the value set. button to quickly access the On/Off menu.
- Cycle Repeat**
button to quickly access the “Repeat Cycle” menu.
** buttons only available on the membrane interface.
The membrane terminal has three additional LEDs, which have the following meaning:
Red
alarm. As the corresponding Alarm button on the membrane does not light up, as is the case on the panel display, this LED is used to visually signal that an alarm has been activated.
Green
Green
chiller On/Off. cycle running.
4 FUNCTIONS
4.1 Chill and freeze cycles
Blast chill cycles are the main function of the Blast Chiller, and can be divided into two categories: chill cycles and freeze cycles.
A chill cycle significantly reduces the time the food remains in the critical temperature band (from 10°C to 65°C) where there is high probability of bacteria proliferation.
A freeze cycle, on the other hand, tends to reduce the formation of macrocrystals of ice inside the frozen product; such macrocrystals, when forming, affect the organoleptic properties of the food.
The standard values of these cycles are as follows: temperature set points for the blast chiller, one lower (around -20°C), used until the internal product temperature reaches the set value or the pre-set time expires, and a second set point, higher (around 0°C), used until the end of the cycle.
For the freeze cycles, if “soft”, Blast Chiller works with two different set points, the first
(higher, around 0°C) used until the product (internally) reaches the set temperature or until the end of a predefined time, the second set point (lower) is then used until the end of the cycle; if, on the other hand, the cycle is “hard”, Blast Chiller always works only considering the final set point of the blast freezer (usually around -35°C).
soft phase)
chill
Initial product temperature
Final product temperature
Duration
90°C
3°C
90 min
90°C
-18°C
240 min
The cycles can be defined by time or by temperature. If the cycle has been defined by time, the duration is defined, while if the cycle is defined by temperature, it ends when the product (internally) reaches the set temperature; in both cases, the control probe is the temperature sensor in the blast chiller, used to control the compressor.
A cycle can also be defined as soft or hard; the meaning of soft and hard differs according to whether it refers to a chill cycle or a freeze cycle.
For the chill cycles, if “soft”, Blast Chiller works for the entire duration of the cycle considering the final temperature of the blast chiller as the set point (usually around
0°C); on the other hand, if the cycle is “hard”, Blast Chiller works with two different
Product temperature
Chill cycles
soft phases) freeze
Cycle
soft phase)
chill
soft phases) freeze
Product temperature
Freeze cycles soft soft hard hard start cycle end cycle start cycle
Fig. 4.1 Chill cycles (hard and soft) and freeze cycles (hard and soft).
Blast Chiller features the following preset standard cycles:
•
Standard + 3 °C by temperature, soft
•
Standard + 3 °C by temperature, hard
•
Standard + 3 °C by time, soft
•
Standard + 3 °C by time, hard
•
Standard - 18 °C by temperature, soft
•
Standard - 18 °C by temperature, hard
•
Standard - 18 °C by time, soft
•
Standard - 18 °C by time, hard
These cycles are set according to the following set points and durations: phase 1 blast chiller/freezer product time phase 2 blast chiller/freezer
Cycle
Standard +3°C by temperature soft
Standard +3°C by temperature hard
Standard +3°C by time soft
Standard +3°C by time hard
0 °C
-20 °C
0 °C
-20 °C
3 °C
10 °C
---
---
90 min
60 min
90 min
60 min
0 °C
0 °C
0 °C
0 °C
3 °C
3 °C
---
---
0 min
30 min
0 min
30 min
Standard -18°C by temperature soft
Standard -18°C by temperature hard
Standard -18°C by time soft
Standard -18°C by time hard
0 °C
-35 °C
0 °C
-35 °C
3 °C
-18 °C
---
---
120 min
120 min
120 min
120 min
-35 °C
-35 °C
-35 °C
-35 °C
-18 °C
-18 °C
---
---
120 min
120 min
120 min
120 min
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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end cycle
Conservation
2 °C
2 °C
2 °C
2 °C
-20 °C
-20 °C
-20 °C
-20 °C
P1
P2
A2
A1
Blast Chiller also allows the user to define up to ten custom cycles, changing the values of the parameters according to needs.
Temperature
The custom cycles can be set starting from one of the standard cycles (made up of two phases) or alternatively using the “complete” option, made up of three phases, all configured by the user:
1. quick chill
2. controlled chill
3. quick freeze
1. quick chill 2. controlled chill 3. quick freeze
P3
A3
Time
T1 T2 T3
Product temperature probe
Unit temperature probe
Fig. 4.2 Complete cycle.
Phase 1 is used to quickly chill food that has just been cooked, phase 2 to avoid the formation of ice on the surface of the products, and phase 3 to freeze quickly.
Each phase has the following parameters:
• blast chiller temperature set point A1, A2, A3 in Fig. 4.2
• duration (cycle by time) or maximum duration (cycle by temperature) T1, T2, T3 in Fig. 4.1
• product temperature set point for the final phase (cycle by temperature) P1, P2, P3 in Fig. 4.2.
If one of the time parameters T1, T2, T3 is set to zero, the corresponding phase is skipped.
If a cycle is being managed “by time”, the product set points (P1, P2 and P3) are not evaluated; if, on the other hand, a cycle is managed “by temperature”, the time parameters (T1, T2 and T3) are used as maximum duration of the three phases; if the set point P3 is not reached throughout the cycle (T1+T2+T3), this does not end, but rather continues until the set point is reached, with an alarm signalling the event.
If at the end of the cycle a conservation phase is set, Blast Chiller brings and maintains the blast chiller/freezer at the set conservation temperature.
The end of a cycle is signalled by an audible buzzer.
Note: if when running a cycle there is a power failure or the door of the blast chiller/freezer is opened, the cycle starts again from the point it was interrupted, if the duration is less than the set point, if, on the other hand, the duration is greater than set point, the cycle is terminated and an alarm signals the event.
Note: when running a cycle, custom cycles cannot be created or saved.
How to use one of the standard cycles:
1. from the main menu
Æ Cycle Æ Standard cycle;
2. scroll the list of the standard cycles (using and );
3. choose (from the 8 available) one of the standard cycles, pressing
3 seconds.
for
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Note: the cycle ends when the end conditions are satisfied, or can be stopped by the user ( Stop)
How to create and use a custom cycle (3 phases –most complete example):
1. from the main menu
Æ Settings;
2. enter the password (any, from PW1, PW2 and PW3)
Æ Custom cycle;
3. scroll the list of the standard cycles (using and ) that can be used as the base fro setting a custom cycle (one, two or three phases);
4. select Complete (cycle with three phases)
Æ now choose whether to set the cycle “by time” or “by temperature”;
5. Blast Chiller now requires the settings for phase 1, the set point of the blast chiller/freezer, the product set point and the duration of the phase ( and modify the value and confirms and moves to the next step);
6. perform the same operations described in point 5 for phase 2 and phase 3;
7. choose Yes or No to set a conservation phase at the end of the cycle and set the corresponding set point;
8. in addition, a defrost phase can be set before the cycle and/or before any conservation phase.
9. then a final screen is displayed for saving the custom cycle with a name (up to 15 alphanumeric characters and the symbols +, -, ° and space) plus a cycle identifier number (from 1 to 10);
10. pressing for 3 seconds saves the cycle;
11. return to the main menu
Æ Cycle Æ Custom cycle;
12. this submenu includes the list of all the custom cycles created; a cycle can be selected from the list and run using the same procedure as for any standard cycle.
Note: up to 10 custom cycles can be saved; after the tenth, Blast Chiller overwrites one of the other custom cycles already configured with the new cycle created.
4.1.1 Probe errors and overload
Input: blast chiller/freezer temperature probes and product temperature probes.
Parameters: probe differential not entered correctly, probe delay out-of-range, overload check period, blast chiller/freezer set point and product set point, maximum duration of the cycle.
Description of the function: there are three items relating to the value measured by the probes:
• product temperature out-of-range
• product temperature probe not inserted correctly
• product overload
Product temperature out-of-range
If an NTC sensor is selected, with a range from -50°C to 90°C, at the start of the cycle the product temperature may be greater than 90°C; in this case, the probe alarm and the value displayed are disabled.
A flashing message (“>90°C”) is displayed, and stops when the temperature measured returns within the specified range, that is, less than 90°C.
If, however, after a certain delay (settable by parameter), the value measured and displayed continues to remain outside of the range, it means that the probe is faulty and an alarm is signalled.
Probe not inserted
If a cycle is selected by temperature and the product temperature probe is not working or has not been inserted correctly, an alarm signals the event and the cycle ends by time.
Overload
When the cycle starts or the door is closed, a check is performed to evaluate the risk of overload. If the outcome is negative, the check is repeated after a set check period and if still negative, an overload alarm is signalled.
The check is performed both on the blast chiller/freezer temperature and the product temperature.
4.2 Temperature control
Input: blast chiller/freezer temperature probes, day/night switch.
Parameters: blast chiller/freezer temperature set point, control differential, type of blast chiller/freezer temperature value calculation, set point deviation with day/night switch, differential deviation with day/night switch, parallel operating mode of the compressors.
Description of the function:
temperature control is performed by evaluating the temperature of the blast chiller/ freezer and generating the temperature control request, as shown in the following figure.
Set point
Control differential
Blast chiller temperature
Fig. 4.3 Temperature control.
If a compressor has been configured for the second phase, there are two possible situations:
- if parallel operating mode is selected, temperature control follows the diagram in Fig. 4.3; the differential and the set point for each phase are the same and the second phase is activated after having waited the delay time between the start of different compressors;
- if on the other hand parallel operating mode has not been selected, then temperature control follows the diagram in Fig. 4.4; the differential for each phase is half of the control differential, while the set point for the second phase is equal to the control set point plus half of the control differential. compressor has been called to start. This parameter is used to avoid the simultaneous starting of both compressors.
•
Minimum on time: once on, the compressor cannot be stopped until this time has elapsed. In the event of overload, this time is ignored.
•
Minimum off time: once off, the compressor cannot be started again until this time has elapsed.
•
The parameters described here are valid for both compressors (compressor and second-phase compressor).
If the door is opened, the compressors either remain in their current status or are switched off, depending on the settings made in the section corresponding to shutdown with the door open. If the door is opened longer than the door open delay, the compressor is reset and starts operating normally.
If the second-phase compressor has been set, operation is the same as described in the previous paragraph.
4.3.1 Duty setting
Input: blast chiller/freezer temperature probes
Parameters: duty setting on time, duty setting off time.
Output: compressor, second-phase compressor.
Description of the function: in the event of control probe errors, the compressor can be kept on until the problem is resolved. The compressor remains on for a duty setting on time and off for a duty setting off time.
If the duty setting on time is set to 0, the function is ignored and the compressor remains off in the event of probe errors. If, on the other hand, the duty setting off time is set to 0, the compressor operates continuously in the event of probe errors.
If the probe error occurs while the compressor is off, this remains off for the duty setting off time, and then is started and remains on for the duty setting on time, then stopped and started again, as illustrated in Fig. 4.5.
Compressor
Set point
Cont. diff./
2
Cont. diff./
2
Blast chiller temperature
Control differential
Fig. 4.4 Temperature control with second phase.
If there is more than one blast chiller/freezer probe, the value is calculated considering the values read by the various probes and the settings defined for the type of calculation, which may be:
-
Highest: the temperature of the blast chiller is the highest of the values read;
- Average: the temperature of the blast chiller is the average of the values read.
Probe error
Note: the set point and the differential can be adjusted by a set point deviation with day/night switch and a differential deviation with day/night switch when the digital input is active: the set point used then is the set plus the set point deviation, and the differential is the differential plus the differential deviation.
4.3 Compressor management
Parameters: number of compressors, parallel operating mode of the compressors, delay when starting the compressors, minimum time between starts of the same compressor, minimum on time, minimum off time, second phase delay, enable rotation, compressor stop when opening the door, door open delay, parallel operating mode.
Output: compressor, second-phase compressor.
Description of the function: the compressor and second-phase compressor parameters can control two different compressors that operate together (this means that all the functions that require the activation of the compressor act on both outputs). If the number of compressors parameter is equal to 1 or the second-phase compressor is not configured, then Blast
Chiller manages just one compressor.
If there are two compressors and rotation has been enabled, these will be managed based on FIFO logic (first-in-first-out): the first compressor to start is the first to stop.
The activation of the compressors must also observe the settings relating to the time delays:
• delay when starting the compressor: this time must elapse before starting it to prevent the compressor from continuously restarting in the event of frequent blackouts.
•
Minimum time between different starts of the same compressor: this time must elapse before the compressor starts again, even if the compressor has been called to start. This parameter is used to limit the number of restarts per hour for each compressor.
•
Minimum time between starts of different compressors: time that must elapse before starting the second-phase compressor, even if the
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Probe error
Duty cycle OFF
Min. OFF time
Second phase comp.
Duty cycle ON
Min. ON time
Duty cycle OFF
Min. OFF time
Time
Duty cycle OFF Duty cycle ON Time
Min. OFF time Min. ON time
Second phase delay
Fig. 4.5 Duty setting (a).
If, on the other hand, the probe error occurs while the compressor is operating, it remains on for the duty setting on time and is then stopped and remains off the duty setting off time, then starting again, as described in Fig. 4.6.
Compressor
Duty cycle ON
Min. ON time
Second phase comp.
Duty cycle ON
Min. ON time
Duty cycle OFF
Min. OFF time
Fig. 4.6 Duty setting (b).
As soon as the probe errors are resolved, normal control resumes.
Time
Time
Second phase delay
Note: if the second-phase compressor has also been configured, the two duty setting parameters act on both phases. Rotation continues to be applied, as does the minimum time between the starts of different compressors.
4.3.2 Continuous operating mode
Parameters: continuous operating mode duration, low temperature alarm delay after continuous operating mode.
Output: compressor, second-phase compressor
Description of the function: during continuous operating mode, the compressor continues operating normally, ignoring temperature control, for the entire duration of the operating mode. The temperature of the blast chiller/freezer may fall below the set point, however cannot fall below the low temperature alarm threshold. Consequently, continuous operating mode can end for two reasons:
• the set duration elapses;
• the low temperature alarm threshold has been reached.
The mode can be activated if:
• the duration has been set to 0;
• the temperature is below the low temperature alarm threshold.
Finally, continuous operation remains pending when:
• the compressors timers are in progress;
• a compressor alarm is active;
• the defrost, dripping and post-dripping functions are in progress;
• the door is open.
If one of the digital inputs has been configured as the door switch, when the door is opened, continuous operating mode is stopped; once the door is closed again, the mode resumes from the point (time) where it was stopped.
If the second-phase compressor has also been configured, continuous operating mode acts on both phases, and rotation and the compressors timers are observed.
4.3.3 Pump down
Input: low pressure switch.
Parameters: enable pump down, select type of end pump down, maximum pump down time, enable compressor auto-start in pump down, delay time between pump down valve activation and compressor start.
Output: compressor, second-phase compressor, pump down valve.
Description of the function: the pump down procedure starts when the compressor is stopped, both by the temperature controller and when the Blast Chiller is switched off. If the compressor, or more in general, the Blast Chiller is shutdown due to a serious alarm, the pump down procedure is not run.
When the pump down procedure starts, the corresponding valve is closed and the compressor runs until the end of the procedure, as shown in Fig. 4.7.
When the temperature control process calls the compressor to start, the pump down valve is opened and, after a delay time, the compressor is started.
If the compressor is called to stop while the valve is open, however the compressor is already off, the valve is closed and the pump down procedure starts. If, on the other hand, there is a start call while the valve is closed and the compressor is already on, the valve is immediately opened.
Compressor call
Pump down valve
Compressor
Time
Time
Pump down time
Time
Fig. 4.7 Pump down.
The pump down procedure ends when the low pressure value is reached or the maximum duration has elapsed, depending on the selection made relating to the pump down mode (by pressure or by temperature).
During pump down, once the compressor has been stopped in order to reach the low pressure value, if the pressure still falls (for example, due to leaks from the valve), the compressor is started again until the low pressure is reached. This procedure is called auto-start.
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Note: the auto-start procedure observes the minimum compressor off time and minimum time between different starts of the same compressor, but not the minimum on time.
If this procedure has been disabled, pump down is run whenever the temperature control process calls the compressor to stop; if, on the other hand, auto-start is enabled, the pump down procedure is run even when the low pressure switch signals that the pressure has increased and there is no call to start the compressor.
Auto-start is disabled in the following cases:
•
Blast Chiller is off;
• before startup;
• if the corresponding parameter is set to 0;
• in the event of pump down alarms;
• if the pump down procedure ends after having exceeded the expected duration.
4.3.4 Stop compressor due to generic alarm
Input: Generic alarm.
Parameters: compressor operating time with generic alarm, compressor off time with generic alarm.
Output: compressor, second-phase compressor.
Description of the function: if any generic alarm has been activated, Blast Chiller works in similarly to duty setting mode. In fact, in the event of generic alarms, the compressor can be kept on until the problem has been identified and resolved. The compressor is on for a compressor operating time with generic alarm (set by parameter) and off for a compressor off time with generic alarm.
Setting the corresponding parameters to 0, the functions are ignored (compressor onoff).
Note: if duty setting mode has been activated at the same time, the time values used are those relating to the compressor on and off with generic alarm and not the onoff times corresponding to duty setting.
4.4 Fan management
4.4.1 Evaporator fans
Input: blast chiller/freezer temperature probes, evaporator temperature probe.
Parameters: type of fan control, evaporator fan control set point, fans off when compressor off, fan operation during defrost, post-discharge duration, evaporator fan control differential, minimum evaporator fan output, maximum phase shift, minimum phase shift, triac pulse width, mains frequency, fan start delay at power on, fans off when opening the door, door switch delay, fan speed up time.
Output: evaporator fans.
Description of the function: the evaporator fans can be managed in different ways, depending on the settings made for the type of control and whether the fans are off when the compressor is off.
The following types of fan control are available:
• no control;
• based on the difference between the blast chiller/freezer temperature and the evaporator temperature;
• based on the evaporator temperature only; in addition, the fans off when compressor off parameter can be used to set the fans as always on or only on when the compressor is running.
Fans off when compressor off
Type of fan control Fan behaviour
Fans always on Always on no control based on the difference between blast chiller/freezer temperature and evaporator temperature
Depending on the temperature of the evaporator and the blast chiller
Fans on when the compressor is on. based on the evaporator temperature only no control based on the difference between blast chiller/freezer temperature and evaporator temperature based on the evaporator temperature only
On when the compressor is on
On when the compressor is on, depending on the temperature of the evaporator and the blast chiller
Note: if two compressors have been configured and the start fans when compressor is started option is set, the fans are on when at least one of the two compressors is on and off only when both compressors are off.
In the event of probe errors, the fans are always on.
If the blast chiller door is opened, the fans remain in their current status or are stopped, depending on the configuration of the corresponding parameters.
In addition, control can be managed in modulating mode (Fig. 4.9) or in on/off mode
(Fig. 4.8).
Control based on the diff. between blast chiller temp. and evaporator temp.
4.4.2 Condenser fans
Input: Condenser temperature.
Parameters: condenser fan off temperature set point, condenser fan off differential, condenser fan start delay at power up.
Output: condenser fans.
Description of the function: the condenser fans can be managed in modulating mode (described in Fig. 4.11) or on/off mode (Fig. 4.10), if both the condenser fan temperature probe and the output have been configured.
First start
Set point Differential
Blast chiller/freezer temp. –
Evaporator temp.
Set point
0.2
Condenser temperature
Control based on the evaporator temperature
Set point Differential
Evaporator temp.
Differential
Fig. 4.10 ON/OFF condenser fan control.
Maximum output
Minimum output
Fig. 4.8 ON/OFF evaporator fan control.
Evaporator temp.
Control based on the diff. between blast chiller temp. and evaporator temp.
Maximum output
Minimum output
Set point
Maximum output
Set point
Differential
Differential
Minimum output
Evaporator temp.
Fig. 4.9 Modulating evaporator fan control.
Note: if the version fitted on the pCO
XS
board is being used, a PWM analogue output can be managed. If output Y3 is configured for the evaporator fans, these must also be managed by the parameters relating to maximum and minimum phase shift, triac pulse width and mains frequency. In this mode, the following hardware modules can be connected: FCS*, CONVONOFF, CONV0/10A0 or MCHRT* series.
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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Differential
Condenser temperature
Fig. 4.11 Modulating condenser fan control.
The behaviour is however different when the compressor is first started, as the activation threshold has as fixed differential of 0.2 °C.
In the event of probe errors, the fans are always on.
If compressor stop due to generic alarm has been configured in such a way that the compressor remains on when an alarm occurs, and in addition the condenser fan temperature probe and the output have been configured, the fans will always be on, based on control. If the condenser temperature probe has not been configured, yet the output has been configured, the fans are always off.
Note: if the version fitted on the pCO
XS
board is being used, a PWM analogue output can be managed. If output Y3 is configured for the condenser fans, these must also be managed by the parameters relating to maximum and minimum phase shift, triac pulse width and mains frequency. In this mode, the following hardware modules can be connected: FCS*, CONVONOFF, CONV0/10A0 or MCHRT* series.
4.5 Defrost
Input: enable defrost/activate defrost, evaporator temperature probe.
Parameters: type of defrost, time between defrosts, start defrost temperature threshold, end defrost temperature threshold, maximum defrost duration, defrost activation delay, dripping time, compressor protection in relation to defrost priority, defrost day and time on real time clock, temperature controlled defrost differential.
Output: defrost relay.
Description of the function: the defrost function can be activated in the cases following:
• before running a cycle (if set);
• before starting the conservation phase (if set);
• in the conservation phase, if the time between defrosts has expired;
• in the conservation phase, if set using the scheduler;
• in the conservation phase, if called by the defrost activation digital input;
• in the conservation phase, if started from the keypad;
• in the conservation phase, if called by the supervisory system.
The defrost can be managed in one of the following modes, depending on the settings of the corresponding parameters:
• by temperature, with electric heater;
• by temperature, with reverse cycle (hot gas);
• by time, using electric heater;
• by time, with reverse cycle (hot gas);
• by time, with electric heater and temperature control.
The defrost by temperature can only be run if the evaporator temperature probe has been configured, otherwise the defrost can only be run in “time” mode.
Defrosts with temperature control can also only be only be run if the evaporator temperature probe is installed and is working correctly. In this case, the relay is closed when the temperature reaches the end defrost temperature threshold and is open when the temperature is lower than the end defrost temperature threshold minus the temperature controlled defrost differential. Defrosts with temperature control can only end by time.
The operating principle of the defrost by temperature is shown in Fig. 4.12
When the defrost is called, the system checks whether the value measured by the temperature probe is lower than the start temperature threshold (point A), if the check is positive, after having waited the defrost activation delay time, the defrost starts (point b).
Evaporator temperature probe
End thresh.
4.5.1 Defrost scheduler
Parameters: type of defrost scheduler, day hours and minutes of the first defrost, …, day hours and minutes of the eighth defrost.
Description of the function: the defrost can be programmed in three different ways (shown in Fig. 4.13):
1. first defrost at the start of the conservation phase and the next defrosts planned in the intervals between defrosts;
2. first defrost at a certain time (preset) and the next defrosts planned in the intervals between defrosts;
3. defrosts at set times (up to 8).
Start storage
Time between defrosts
Time between defrosts
Time hh:mm
Time between defrosts
Time between defrosts
Time
Start thresh. hh1:mm1
B
A C Time
Defrost start delay
Fig. 4.12 Defrost by temperature.
Te defrost cannot start in the following cases, not even if the conditions are right:
• if the defrost digital input has not been enabled;
• if the compressor timer is in progress;
• if the low pressure alarm is active (only for the defrost with reverse cycle);
• if the pump down procedure is active;
• in continuous operating mode;
• if the door of the blast chiller/freezer is opened (only for the defrost with reverse cycle and if the compressor is off);
• if the high condenser temperature alarm is active (only for the defrost with reverse cycle);
• if a generic alarm is active.
When the system calls the defrost before starting a cycle and the defrost is pending, the display shows the cycle running screen with the defrost icon flashing, telling the user that the cycle cannot start. If, on the other hand, the defrost is set before the conservation phase, the icon flashes, but the program also starts the conservation phase as the defrost can also be run during this phase.
The defrost by temperature can end if the value read by the probe exceeds the end temperature threshold or because the maximum duration of the defrost has elapsed; in this case, an alarm is generated.
An alarm is also generated if the defrost ends because the temperature probe is broken.
During the defrost, the fans may be on or off, in any case at the end of the defrost a dripping phase can be set, depending on the settings of the corresponding parameter
(setting the dripping time to 0 skips the operation).
At the end of the defrost phase:
• if the dripping phase has been set, the compressors are stopped using the pump down procedure (if enabled). If, on the other hand, this phase has not been set, the compressors remain in the previous status and normal control resumes;
• if the dripping and the post-dripping phase has been set, the fans are off. If, on the other hand, these phases have not been set, the fans remain in the previous status and normal control resumes;
• the defrost relay is deactivated;
• the post-defrost alarm delay is deactivated;
• if there are defrost calls pending, these are reset.
The defrost procedure can also be completed:
• if the digital input has been disabled;
•
Blast Chiller is stopped from the keypad, supervisor or digital input;
• if the phase is terminated from the keypad or controlled by the supervisor.
Note: in these cases, the dripping and post-dripping phases are skipped.
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Time
Fig. 4.13 Defrost scheduler.
Note: the interval between defrosts must always be set, as it is used if there are problems with the internal clock (Real Time Clock).
4.5.2 Advanced defrosts
Parameters: select type of advanced defrost, nominal defrost duration, proportional factor in the time variation between defrosts.
Description of the function: there are three types of advanced defrost, which can be set using the corresponding parameters:
1. variable time between defrosts: with this type of defrost, the time between defrosts is increased or decreased depending on the duration of the previous defrost. The defrost time is calculated as follows:
I n
+
1
=
I n
+
⎡
⎣
⎢
⎝
⎛
⎜
dn
100
−
dE dP n
⎠
⎟
⎞
*
I n
*
dH
50
⎦
⎥
⎤
where:
I n
= time between defrosts;
dn = nominal duration of the defrost in “normal” operating conditions, expressed as a percentage of the maximum defrost duration;
dE n
= current duration of the previous defrost;
dP = maximum defrost duration;
dH = proportional factor: used to increase or decrease the influence of the duration of the current defrost. If dH = 0 this has no influence.
The time between defrosts is limited between In/2 and 2I
n
.
2. Skip defrost: the completion of the defrost is based on the previous defrost duration.
dn dP
If the defrost duration is less than or equal to
100
, the next defrost is skipped.
When the defrost is next run, the check is repeated and if the duration is
dn dP
still less than or equal to
100
, the next two defrosts will be skipped, and so on until three consecutive defrosts.
If three consecutive defrosts are skipped, the sequence restarts, and the
dn dP
next time the duration calculated is less than or equal to one defrost will be skipped.
100
, only
When Blast Chiller is started, seven defrosts are completed before checking the duration.
3. Combination of the previous two modes: with this type of defrost, the time between defrosts is increased or decreased based on the previous defrost, and the completion of the defrost is also based on the duration of the previous, as described for the previous types and in Fig. 4.14.
Defrost alarm delay time plus the HACCP alarm delay time, as illustrated in Fig. 4.15, the following data are saved:
• date and time;
• duration of the alarm;
• maximum temperature value reached by the blast chiller/freezer;
• type of HACCP alarm (that is, blast chiller/freezer high temperature).
Temperature Maximum temperature
Alarm threshold
Skip Skip
Set point
Time
Time
Time between defrosts (variable)
Defrost duration less than
Defrost duration higher than
Fig. 4.14 Combination of variable time between defrosts and skip defrost.
4.6 HACCP (Hazard Analysis and Critical Control Point)
Input: blast chiller/freezer temperature probe.
Parameters: blast chiller/freezer HACCP high temperature alarm threshold, alarm blast chiller/freezer high temperature delay, HACCP alarm delay, maximum blackout duration during a cycle, maximum blackout duration during conservation, type of HACCP threshold.
Description of the function: this function of the Blast Chiller is used to record possible anomalies when running cycles or during the conservation phase. The following anomalies are recorded:
• cycle ended when exceeding the maximum time due to problems with the probe;
• cycle ended after the maximum time;
• blackout when running the cycle;
• blackout during the conservation phase;
•
HACCP high temperature alarm threshold exceeded;
If the “cycle by temperature” mode has been selected and a probe error occurs, the cycle ends when the maximum time set is reached, and the following are saved:
• date and time;
• final product temperature;
• the type of HACCP alarm (that is, in this case, cycle ended by exceeding maximum time).
If, on the other hand, when the “cycle by temperature” is selected the cycle ends when exceeding the maximum time set, the following are saved:
• date and time;
• the extra time required for the product to reach the final temperature;
• the type of HACCP alarm (in this case, “cycle ended by exceeding maximum time”). in the event of blackout when running a cycle, the following data are saved:
• date and time;
• duration of the blackout;
• the type of HACCP alarm (blackout when running a cycle).
Note: if the duration of the blackout is greater than the maximum blackout duration set, the cycle is stopped.
If the blackout occurs during the conservation phase and the duration is greater than the value set for the corresponding parameter, and at the end of the blackout the blast chiller/freezer temperature is higher than the high temperature alarm threshold, the following are saved:
• date and time;
• blackout duration;
• blast chiller/freezer temperature after the blackout;
• the type of HACCP alarm (blackout during the conservation phase).
If during the conservation phase the blast chiller/freezer temperature exceeds the high temperature alarm threshold for a time greater than or equal to the high temperature
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
25
High temperature alarm + HACCP alarm delay
Alarm duration
Fig. 4.15 HACCP high temperature alarm
4.6.1 Using the printer
Blast Chiller can be connected to a printer (RS232 serial port) for printing the data on the last cycles performed and the most recent HACCP alarms.
If the device has been correctly configured, a report is printed at the end of each cycle and whenever an HACCP alarm is activated, or more simply whenever the user requires.
The hardware requirements for using the serial printer are:
•
The printer used must be able to manage a number of columns at least equal to the number on the pCO terminal.
•
The printer must have a standard RS232 serial interface.
•
For the connection between the printer and the pCO, use the BMS or
FieldBus serial port, the latter available on the pCO
3
controllers. In addition, the RS232 serial option must be installed on the pCO controllers.
•
The printer must support at least one of the communication speeds available on the pCO; 1200, 2400, 4800, 9600 and 19200 bps. The communication settings are: 8 data bits, no parity, 1 stop bit, no flow control.
•
The connection cable between the printer and the pCO must be acquired or made according to the signals available on the pCO connector, as follows.
Pin Name Direction Use
1 DCD Input
Printer error detection. BMS ONLY
SERIAL
Connector board
4 DTR Output
DTR=0 “pCO ready” signals. CONNECTED
TO PIN 7
INTERNALLY ON THE
BOARD
7 RTS Output
CONNECTED TO PIN
4 INTERNALLY ON
THE BOARD
Pins 6, 8 and 9 are not connected.
Note: data can be printed corresponding to the last ten cycles completed and to the last ten HACCP alarms activated.
The following data are saved (and therefore printed): date, time, type of cycle, value read by the probes at the start and the end of the cycle, duration of the cycle.
4.7 Lights
Input: door switch, brightness sensor, day/night switch.
Parameters: day hours and minutes the light is switched on, day hours and minutes the light is switched off, off time with light sensor, light controlled by the user, light activation during OFF status.
Output: light.
Description of the function: the light can be controlled by:
• the door open/closed switch,
• the curtain switch,
• the keypad,
•
Note: the possibility to control the light from the keypad must be set by the manufacturer, otherwise these settings are not visible to the user.
• the supervisor,
• the light sensor,
• the daily time bands.
Control of the lights by the daily time bands can be activated even if Blast Chiller is off, by setting the light activation parameters accordingly.
As concerns the brightness sensors, these can be located inside the blast chiller or on the door frame; in the latter case, they signal when the door is opened by sensing the light. The inside light is therefore switched on when light is detected and off when not.
When the brightness sensor is on the other hand located inside the blast chiller, light is also detected when the inside light is on; to overcome this problem, after a time set for the “off time with light sensor” parameter, the inside light is switched off for 5 seconds, so that if no other light is detected, it means that the door is closed and therefore the inside light is kept off, while it remains on if the door is found to be open.
If the “off time with light sensor” parameter is set to 0, it means that the sensor is located on the door frame.
4.8 Auxiliary output
Input: activate auxiliary output.
Parameters: day hours and minutes the auxiliary output is activated, day hours and minutes the auxiliary output is deactivated, auxiliary output controlled by the user, auxiliary output activation in OFF status.
Output: auxiliary output.
Description of the function: the auxiliary output can be controlled by: a digital input, if configured, the keypad, a supervisor and daily time bands. The possibility to control the output from the keypad must be configured by the manufacturer, otherwise the user will not be able to access the settings.
Control by the daily time bands can be activated even if Blast Chiller is off, by setting the
“auxiliary output activation in OFF status” parameter accordingly.
4.9 Antifreeze
Input: antifreeze temperature probe.
Parameters: antifreeze temperature alarm threshold, antifreeze alarm delay.
Description of the function: the antifreeze function is only active if the antifreeze input has been configured.
When the antifreeze temperature is lower than the antifreeze temperature alarm threshold for a time equal to the “antifreeze alarm delay”, an antifreeze alarm is generated; this alarm immediately stops the compressor and activates the generic alarm output.
4.10 ON/OFF
Parameters: light activation in OFF status, auxiliary output activation in OFF status.
Description of the function: the ON/OFF status of the Blast Chiller can be managed, with different priorities, by digital input, user interface and the supervisor (the digital input has the highest priority).
If the device has been switched off from a digital input, it cannot be switched on in the other ways. On the other hand, the control from the keypad or the supervisor remains enabled if the digital input has not been configured.
During OFF status, the following are disabled:
• running cycles;
• temperature control;
• all the functions relating to the management of the fans and compressors;
• defrost;
•
HACCP monitoring;
• saving and displaying the alarms.
In addition, by setting the related parameters, the lights and the auxiliary output can also be enabled or disabled in this status.
During OFF status:
• all the parameters can be displayed and saved;
• the alarms relating to the probes remain active;
• the compressor protection times are observed;
• the pump down procedure is performed (if enabled);
• the defrost and continuous operating modes are terminated.
When switching ON:
• the compressor protection times must be observed;
• the compressor and fan start delays are ignored.
4.11 Sterilisation
Input: door switch.
Parameters: sterilisation duration, maximum sterilisation duration, percentage of power.
Output: sterilisation.
Description of the function: the sterilisation process can operate in ON/OFF mode or modulating mode, depending on the output configured.
Sterilisation cannot be performed when running a cycle or if the blast chiller door is open, however the operation can be run during the conservation phase.
Note: the value of the sterilisation duration parameter must be less than or equal to the value of the maximum sterilisation duration parameter, set by the manufacturer.
4.12 Heat probe
Input: product temperature.
Output: probe heater
Description of the function: the heat probe function (piercing probe) cannot be activated if it has not been correctly enabled and the probe is not fitted.
This function, in addition, can only be activated if the temperature measured by the probe in the heart of the product is less than 4 °C. The corresponding digital output remains active until the temperature measured exceeds 4 °C (fixed value, not settable by parameter).
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5 DESCRIPTION OF THE MENUS
Main menu - functions tree
1.
On/Off
2.
Cycle a.
3.
Conservation
4.
Sterilisation
5.
Heat probe
6.
Settings
Æ PW1 (advanced user) a.
From std +3 °C soft b.
Conservation a. b.
Defrost c.
Operating hours
7.
Maintenance
Æ PW2 (maintenance) a. Information b. Maintenance settings c. Manual management a. Config. serial ports b. Set op. hours c. Calibrate probes d. Temperature control
Æ PW3 (manufacturer) f. I/O configuration g. Manufacturer settings h. I/O test i. Initialisation/PW3
8.
Clock
9.
Data log a.
HACCP
10.
Lock keypad
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The Blast Chiller screen can be divided into 4 main areas, containing different information:
Menu branch accessed by the user, where the address of the screen
(relating to the menu map) may be displayed in the top right corner (see
1
2
Fig. 5.4)
Main values relating to the function in question
3
4
Various information (see the table below)
Tools for navigating the Blast Chiller software
Specifically, the bar at the bottom (3) features the following icons:
Conservation phase set
Defrost in progress or pending (if flashing)
Compressors on
Fans on
Alarms active
HACCP alarms active
Product probe error
The right of the bottom bar (4), on the other hand, contains the following information:
Start custom cycle
Stop
Access auxiliary output control
Access conservation phase settings
Access continuous operation
Access defrost settings and control
Access light control
Pause
Start
Repeat cycle
Save
Access parameter settings
Start standard cycle
Note: indicates that only one option is available, while is shown if the user can choose between various options available.
5.1 On/Off
This menu is used to switch Blast Chiller on/off, that is, from OFF status to ON and viceversa. To change status press for 3 seconds.
5.2 Cycle
Used to display the cycle in progress or run a cycle selected from the last completed or the standard or custom cycles set. The Blast Chiller displays the following screen when running a cycle:
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
Fig. 5.1
This shows the information on the type of the cycle (by time/by temperature, hard/soft).
If, on the other hand, no cycle is running, on accessing this menu three submenus are displayed: REPEAT, STANDARD and CUSTOM; the first row of the display shows the string CYCLE, the various submenus are indicated by specific icons.
5.2.a Repeat
If entering branch 2.a of the functions tree, a screen is displayed showing information on the last cycle completed, with the first row containing the string REPEAT, in the middle is an icon that shows the type of cycle selected and the main variables measured, while the last two rows show the name of the cycle; pressing for 3 seconds starts the cycle and Blast Chiller returns to display the screen shown in Fig. 5.1.
5.2.b Standard
This submenu displays the standard cycles available (loaded as default on Blast Chiller).
Use and to scroll the list of standard cycles, while pressing for 3 seconds starts the cycle displayed at that moment; once the cycle has been started, Blast Chiller returns to the screen shown in Fig. 5.1.
Note: the conservation phase is selected by default for the standard cycle, while the set point is 2 °C.
5.2.c Custom
This submenu describes the various custom cycles (defined by the user, up to a maximum of 10 cycles). Use and to scroll the list of custom cycles, while pressing for 3 seconds starts the cycle displayed at that moment; once the cycle has been started, Blast Chiller returns to the screen shown in Fig. 5.1.
5.3 Conservation
This menu can be used to start or modify the conservation phase. The screen displayed is similar to the one shown in Fig. 5.1, and is used to set the main parameters.
5.4 Sterilisation
Access this menu to start the blast chiller sterilisation procedure. The display shows the screen in Fig. 5.2 (this screen is only visible, however, if the corresponding output has been enabled, otherwise the display shows the message NOT AVAILABLE).
28
Fig. 5.2
The first row shows the string STERILISATION, while in the middle of the screen are the temperature of the blast chiller and the duration of the sterilisation process. The icon flashes if the process is running. The last two rows focus the user’s attention on any causes that prevent the sterilisation process from starting or other information concerning the end of the procedure. The icons at the bottom right are used to start/stop the sterilisation process (pressing duration.
for 3 seconds) and change its
At the end of the process, the last two rows of the display show a message telling the user that operation is complete (STERILISATION COMPLETED) and, pressing or
, Blast Chiller returns to the main menu. If for any reason the sterilisation procedure was not completed correctly (for example, if the door of the blast chiller is opened during the procedure), the last two rows of the display show the string
STERILISATION NOT COMPLETED. If, while sterilisation is running, the user returns to the main menu, but wants to know the status of the process, simply return to the corresponding menu.
Note: pressing or and thus returning to the main menu cancels all the information relating to the end of the sterilisation process.
5.5 Heat probe
This menu is used to access the heat probe function (piercing probe); the screen is however only visible if the corresponding function has been enabled (otherwise the display shows NOT AVAILABLE).
The icon on the display flashes if heating is in progress, while the last two rows of the display inform the user when the temperature has reached the set threshold or if necessary show a message that indicates the reason why the probe did not start heating.
The operation of this menu is similar to the previous one (Sterilisation).
5.6 Settings
The Settings menu accesses the pages of the functions available only to advanced users; in fact, to access this menu a password needs to be entered (PW1). Remember that some screens are only displayed if the corresponding functions are available.
The menu shows SETTINGS at the top and four submenus in the middle: a. Custom cycle, b. Storage, c. Operating hours and d. Change language, which correspond to four icons.
This submenu is used to define a custom cycle. First of all the user can choose the standard cycle to use as the basis for creating the custom cycle:
•
6.a.a From std +3 °C soft
•
6.a.b From std +3 °C hard
•
6.a.c From std -18 °C soft
•
6.a.d From std -18 °C hard
•
6.a.e Complete (that is, three phases).
The two basic cycles 6.a.a and 6.a.d both contain the parameters for the cycle with just one phase; the parameters can be set using and (to increase or decrease the values), and the values must be confirmed by pressing . Once the value of the parameter has been set, the cursor automatically moves to the next parameter, and after having set the last parameter, the screen for saving the custom cycle is displayed.
The same thing occurs when selecting the two cycles 6.a.b and 6.a.c (two phases), however there are more parameters (those relating to the second phase).
Selecting a complete cycle, that is, with three phases, the procedure to configure the custom cycle is the same, only longer as there are even more parameters to set. In each step the last row of the display shows a string that describes the phase corresponding to the parameter being set at that moment.
Note: the name used to save the custom cycles can have a maximum of 15 characters. The characters are selected by scrolling the list (in alphabetical order) using
and and then confirming the character with ; once the required name has been set, press for 3 seconds to save it. Confirmation (CYCLE SAVED, PRESS
MENU FOR THE MAIN MENU) tells the user that the cycle has been saved.
Note: pressing at any time returns to the previous step.
5.6.b Conservation
This menu is used to configure all the parameters relating to the conservation phase. In the same way as described for menu 6 (Settings), the top of the display shows the string
CONSERVATION, while in the middle are four submenus:
•
6.b.a Temperature control
•
6.b.b Defrost
•
6.b.c Fans
•
6.b.d Alarms
When entering each of these submenus, the various parameters can be set in the same way as in the previous menus (using and to choose the various values and confirming by pressing step).
, while pressing at any time returns to the previous
Note: on the page for setting the parameters, the first row of the display shows the name of the submenu relating to the parameter being set, as shown in Fig. 5.3.
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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Fig. 5.3
This shows the operating hours of all the main devices connected to Blast Chiller, so as to monitor periodical maintenance.
returns to the higher level and scroll the list of the various devices, while menu.
The user can select one of the languages loaded in the Blast Chiller memory; in addition, the unit of measure can be chosen, between SI (international system) and Imperial
(temperature expressed in °C or in °F and the date expressed as dd/mm/yy or yy/mm/dd).
The other function available in this menu is the possibility to change password PW1.
The screen is navigated in the same way as described for the other screens.
5.7 Maintenance
The menu can only be accessed when entering a password; depending on the password entered and the access level, different screens will be displayed:
• password PW2: accesses the maintenance level screens only;
• password PW3: accesses all the screens on the Blast Chiller
(manufacturer level).
Some screens are displayed only if the corresponding function is available.
The main feature of the maintenance menu screens (7) is that the first row of the display, on the right, shows the address of the screen, with reference to the map of the functions tree described above.
Fig. 5.4
Note: Fig. 5.4 shows an example of the reference to the Blast Chiller screen map:
“ba01” in fact indicates that inside the menu, after having chosen branch “b” and subbranch “a”, the user has accessed the screen for configuring the serial port.
5.7.a Information
This menu shows information on the hardware and the firmware and software versions.
Fig. 5.5
This branch includes the following functions:
•
7.b.a Config. serial ports: used to set all the parameters required for connection to the supervisory system, which depend on the type of optional board and connection protocol selected.
•
7.b.b Set op. hours: used to select the various time thresholds for the planned maintenance of the various devices.
•
7.b.c Calibrate probes: used to set the offset to be added to/subtracted from the value read by the probe, so as to give a more accurate indication of the temperature acquired.
•
7.b.d Temperature control: features the parameters relating to temperature control; these can be modified when starting or during the maintenance of Blast Chiller, except those covered by the manufacturer access level (password PW3).
Used to switch from automatic to manual operating mode for each device connected to the Blast Chiller.
The digital outputs can be ON or OFF, while for the analogue outputs the percentage can be selected. The default values are Auto.
Manual operating manual ignores temperature control, but not the thresholds for the various alarms, so as to guarantee the safety of the system. This mode is usually used to test the operation of the individual devices, or to set a preset value for a certain output.
5.7.d Default/PW2/Alarms
Used to set the default values for the manufacturer parameters, therefore cancelling all the custom settings and rebooting Blast Chiller with the default settings. This screen can also be used to change password PW2 and delete the data relating to the alarms that have been saved.
5.7.e Configuration
To select all the main functions of the Blast Chiller, such as the operation of each device or whether or not the various components and accessories are fitted.
In this menu the functions can be set for each individual I/O channel; for each input or output, a connected probe or device can be selected. Once a probe or a device has been selected and assigned to the respective input or output, it can no longer be selected. For the digital I/Os, the type of device can also be set (NO or NC); for the analogue outputs, the maximum and minimum values can be set, while for the digital inputs the type of probe and the operating range can be configured.
Used to select and set the parameters that can be configured by the manufacturer.
Used to check the status and the operation of the input and output channels.
5.7.i Initialisation/PW3
This screen is used to restore the default parameter values (set by CAREL); choosing
“CAREL default” cancels all the custom settings made and reboots Blast Chiller, restoring with the initial settings.
In addition, password PW3 can be changed.
5.8 Clock
This menu is used to set the date and time of the Blast Chiller clock.
Note: the type of date and time display may be selected using the corresponding parameter.
5.9 Data log
The data log menu is used to access the list of HACCP alarms, the other alarms and print the HACCP reports. This screen in fact features three submenus:
•
9.a HACCP: displays the HACCP alarms;
•
9.b Alarms: displays all the other alarms;
•
9.c Print: used to print the last ten HACCP alarms and the last ten cycles completed.
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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5.10 Lock keypad
Used to lock/unlock the keypad. To lock/unlock the keypad, press and together. To prevent unauthorised personnel from changing the Blast Chiller settings, once the keypad has been locked, it can only be unlocked by entering one of the three passwords, PW1, PW2 or PW3.
6 TABLE OF PARAMETERS
The following table shows all the parameters, divided by the functions they refer to; the columns in the table show:
•
Parameter: the name of the parameter;
•
Type: indicates the function the various parameters relate to;
•
Screen: the identification number of the screen for accessing the parameter in question (menu branch followed by the index of the screen, if available);
•
Description: short description of the parameter;
•
UOM: unit of measure;
•
Range: the range of values available for the parameter;
•
Default: the default value of the parameter.
Key to the type of parameters (main)
Defrost
Cycle and custom cycle
Fans
HACCP alarms
Alarms
Parameter
Cycle
Temperature control and compressors
Inputs/outputs
Menu,
Type
Current cycle
Product temperature
Blast chiller/freezer
-
-
Cycle running
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller temp. probe management parameter blast chiller)
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller
- …
° C -50.0 to +90.0
-
-
Timer
Signals
Cycle status
Conservation
-
-
-
Time remaining until the conclusion of the cycle
Alarms, HACCP alarms, product probe error, conservation phase setting
Information concerning the end of the cycle
° C 50.0 to +90.0 min
-maximum cycle duration to
9999
-
-
to
Cycle terminated correctly, cycle terminated after maximum time
-
-
-
-
Blast chiller/freezer
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller
Set point - Blast chiller/freezer temperature set point
Alarms, HACCP alarms, product probe error, conservation phase setting,
° C -50.0 to +90.0
° C minimum blast chiller/freezer temperature set point to maximum blast chiller/freezer temperature set point
-
-
Light activation
Evaporator temperature
End defrost threshold
Defrost timer
Continuous operating mode duration
Continuous operating mode timer
Set point
On-Off- main menu
-
-
-
-
-
Activation of the light
Evaporator temperature
End defrost threshold
Time remaining until the conclusion of the defrost
Continuous operating mode duration set point
Time remaining until the conclusion of the continuous operating mode
Evaporator set point temperature
- to
- Off, On
° C -50.0 to +90.0
-
Off
-
° C -50.0 to +90.0 +4.0 min maximum defrost duration to 0 - min 0 to 9999 min 0 to 9999
° C -50.0 to +90.0
480
480
+2.0
-
ON, OFF from supervisor, OFF from keypad, OFF from digital input, OFF from alarm Off Unit status
Cycle - main menu
Current cycle - to -
Product temperature
2.a Last cycle completed
2.a
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller temp. probe management parameter blast chiller) ° C -50.0 to +90.0 -
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
31
Blast chiller/freezer temperature
Timer
Standard cycles
2.a
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller temp. probe management parameter blast chiller)
2.a Duration of the last cycle completed
2.b Standard cycles
Custom cycles 2.c
Conservation - main menu
Custom cycles
Product temperature
Blast chiller/freezer temperature
3.
3.
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller temp. probe management parameter blast chiller)
Blast chiller/freezer temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller temp. probe management parameter blast chiller)
° C 50.0 to +90.0 min 0 to 9999
- 1 to 8
- 1 to 10
° C -50.0 to +90.0 -
Set point
Blast chiller/freezer
3.
Signals 3.
Sterilisation - main menu
Output 4.
Blast chiller/freezer temperature set point
Alarms, HACCP alarms, product probe error, conservation phase setting, defrost, fans, compressors
Value of the sterilisation analogue output
Blast chiller/freezer temperature (the highest or the average value more than one probe is used, depending on the value set for the blast chiller temp.
° C 50.0 to +90.0
° C minimum blast chiller/freezer temperature set point to maximum blast chiller/freezer temperature set point
-
-
- to -
% 0 to 100 0
-
-
1
1
Timer 4. Time remaining until the conclusion of the sterilisation process
Sterilisation status
Sterilisation duration
Output
4.
4.
4.
Sterilisation status
Sterilisation duration set point
Sterilisation analogue output set point
Sterilisation duration
Heat probe - main menu
Product temperature 5.
Product temperature (the highest or the average value if more than one probe is used, depending on the value set for the blast chiller temp. probe management parameter blast chiller)
° C 50.0 to +90.0 min
-
0 to maximum sterilisation duration 100
- min
Door open, sterilisation completed, sterilisation not completed, ... -
0 to maximum sterilisation duration 20
% 0 to 100
0 to maximum sterilisation
0%
1000
° C -50.0 to +90.0
-
Probe heating completed, temperature in the heart too high, ...
-
- Probe heating status
Settings - main menu
5.
Password
End cycle
Probe heating status
6. User password
6.a.a Select type of end cycle
Blast chiller set point 6.a.a Blast chiller temperature set point
Product set point temperature, if the cycle finishes by time, this value is
Product set point 6.a.a
Phase duration 6.a.a
Duration of the cycle, if the cycle finishes by temperature, this is the maximum duration of the cycle
Conservation 6.a.a after the cycle ends
-
-
° C
0 to 9999 temperature, time minimum blast chiller/freezer temperature set point to maximum blast chiller/freezer temperature set point minimum product set point temperature to maximum
1234
Temperature (*)
0.0 (*)
Cons. set point
Defrost before cycle
Defrost before cons.
Custom cycle number
Custom cycle name
6.a.a Blast chiller/freezer temperature set point during the conservation phase
6.a.a Defrost set before running the cycle
6.a.a Defrost set before the conservation phase
6.a.a Number of the custom cycle to be saved
6.a.a Name of the custom cycle (15 fields) min 0 to maximum cycle duration 90 (*)
-
° C
NO/YES minimum blast chiller/freezer temperature set point to maximum blast chiller/freezer temperature set point
YES (*)
+2.0 (*)
-
-
-
-
NO/YES
NO/YES
1 to 10
A to Z, a to z, 0 to 9,°, , -,+
YES (*)
YES (*)
1 (*)
-
Note: Blast Chiller features the same mode for setting the custom cycle parameters for all three phases (shown above);
(*) the default values change for each phase shown on the individual screen during the creation of a cycle.
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
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Defrost scheduler
Day
Evap. fan control set
D. switch fans off
Fans during defrost
Type of HACCP threshold
First end time
Compressor
Control in:
Compressor 2
Control in:
Evap. fan
Control in:
Cond. fan
Control in:
UV light
Control in:
Unit
Control in:
Conservation set point
Time of the first defrost
…
Time of the eighth defrost
High temp. alarm threshold
HACCP temp. alarm delay
Day
First start time
First end time
...
First start time
Fourth end time
First start time
Change language
6.b.a Blast chiller/freezer temperature set point in conservation
6.b.b Type of defrost scheduler
6.b.b Day of activation of the first defrost
6.b.b
Hours and minutes of the first defrost. The next will be run after the “time between defrosts” or at the time set for the second defrost, according to the settings of the “defrost scheduler” parameter
… …
6.b.b Hours and minutes of the eighth defrost
Evaporator fan control set point. Parameter active only if the fans are controlled in relation to the temperature, that is, depending on the deviation between the blast chiller/freezer temperature and the evaporator
6.b.c Fans off when door closed
6.b.c Fans during defrost
6.b.d Type of HACCP alarm threshold
6.b.d HACCP high temperature alarm threshold
6.b.d HACCP high temperature alarm delay
6.b.e Day light first switched
6.b.e Day, hours and minutes light switched on
6.b.e Day, hours and minutes light switched off
… ...
6.b.e Day, hours and minutes light switched on
6.b.e Day, hours and minutes light switched off
6.b.e Day, hours and minutes auxiliary output activated
6.b.e Day, hours and minutes auxiliary output deactivated
6.c Compressor op. hours
6.c Time remaining before next compressor control
6.c Second compressor op. hours
6.c Time remaining before next second compressor control
6.c Evaporator fan op. hours
6.c Time remaining before next evaporator fan controls
6.c Condenser fan op. hours
6.c Time remaining before next condenser fan control
6.c UV light op. hours
6.c Time remaining before next UV light control
6.c Op. hours unit
6.c Time remaining before next unit control
6.d Change the language of the user interface
° C
- minimum blast chiller/freezer temperature set point to maximum blast chiller/freezer temperature set point
0: not used
1: start conservation + time between defrost
2: time set + time between defrost
3: time set
+2.0
1
Monday to Sunday, Mon. to
Fri., Mon. to Sat., weekends - -
…
0 to 23
0 to 59
… …
0 to 23
… 0 to 59
Minimum fan control set point to Maximum set point control
0
0
…
0
0
-
-
-
YES/NO
Off, On
YES
On
Relative / Absolute Relative
Minimum HACCP high temperature alarm threshold to
Maximum HACCP high temperature alarm threshold 5.0 ° C h h h h h h h h h h
… h h s
…
…
…
…
…
…
-
0 to 9999
Monday to Sunday, Mon. to
Sat.
0 to 23
0 to 59
0 to 23
0 to 59
0 to 23
0 to 59
… to
0 to 23
0 to 59
0 to 23
0 to 59
0 to 23
0 to 59
0 to 23
0 to 59
0 to 30000
0 to 30000
0 to 30000
0 to 30000
0 to 30000
0 to 30000
120
-
30000
-
30000
-
30000
to
Monday
0
0
Monday
0
0
Monday
0
0
Monday
0
0
Monday
0
0
Monday
0
0
Monday
0
0
0 to 30000
0 to 30000
0 to 30000
0 to 30000
-
30000
-
30000
0 to 30000 -
0 to 30000 30000
English, French,
Italian,
German,
Spanish English
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
33
Show screen when starting
Change language in:
Unit of measure
Date setting
Enable buzzer
6.d Enable display of the change language screen at start-up
6.d
Delay time within which the change of language is accepted without modifications
6.d Change temperature unit of measure
6.d Change the date settings
6.d Enable the buzzer
New PSW 6.d Change the user password
Maintenance - main menu
Enter password
Type of board
Boot
Bios
BMS protoc.
BMS address
BMS speed
Field Bus protocol
Field Bus speed
Compressor op. hour threshold
Reset compressor op. hours
Compressor 2 op. hour threshold
Reset compressor 2op. hours
Evap. fan op. hour threshold
Reset evap. fan op. hours
Cond. fan op. hour threshold
Cond evap. fan op. hours
UV light op. hour threshold
Reset UV light op. hours
Unit op. hour threshold
Reset unit op. hours
Probe B1 offset
…
Probe B5 offset
Blast chiller/freezer temperature diff.
Device connected to digital input 1
Operating mode
Digital input 1 in manual operating mode
...
Device connected to digital input 8
Operating mode
Digital input 8 in manual operating mode
Device connected to analogue output 1
Operating mode of analogue output 1
Analogue output 1 in manual operating mode
Device connected to analogue output 3
Operating mode of analogue output 3
7.a Maintenance or manufacturer password
7.a Type of hardware
7.a Boot version
7.a Bios version
7.b.a, ba02 Protocol used on the BMS port
7.b.a, ba02 Address for the supervisory system
7.b.a Communication speed of the BMS serial port
7.b.a Protocol used for the Field Bus serial port
7.b.a Select the communication speed of the Field Bus serial port
7.b.b, bb01 Compressor op. hour threshold
7.b.b, bb01 Reset compressor op. hours
7.b.b, bb02 Second compressor op. hour threshold
7.b.b, bb02 Reset second compressor op. hours
7.b.b, bb03 Evaporator fan op. hour threshold
7.b.b, bb03 Reset evaporator fan op. hours
7.b.b, bb04 Condenser fan op. hour threshold
7.b.b, bb04 Reset condenser fan op. hours
7.b.b, bb05 UV light op. hour threshold
7.b.b, bb05 Reset UV light op. hours
7.b.b, bb06 Unit op. hour threshold
7.b.b, bb06 Reset unit op. hours
7.b.c, bc01 Offset in the reading of probe B1
7.c …
7.b.c, bc03 Offset in the reading of probe B5
7.b.d, bd01 Blast chiller/freezer temperature diff.
7.c, c01 Device connected to digital output 1
7.c, c01 Operating mode of digital output 1
7.c, c01 Digital input 1 in manual operating mode
…
7.c, c08 Device connected to digital input 8
7.c, c08 Operating mode of digital output 8
7.c, c08 Digital input 8 in manual operating mode
7.c, c09 Device connected to analogue output 1
7.c, c09 Operating mode of analogue output 1
7.c, c09 Analogue output 1 in manual operating mode
7.c, c11 Device connected to analogue output 3
7.c, c11 Operating mode of analogue output 3
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
34
- s
-
-
-
-
NO/YES
0 to 9999
°C/ °F dd/mm/yy, mm/dd/yy
N/ Y
0 to 9999
YES
60
°C dd/mm/yy
Y
1234 h
- h
-
-
0 to 9999
1234,
1234 pCO
3
, pCO xs
-
-
-
…
…
Carel, ModBus, LON, Carel
RS232, printer
-
-
- Carel
- 1 to 200 1 bps 1200, 2400, 4800, 9600, 19200 19200
-
Carel, ModBus, LON, Carel
RS232, printer Carel bps 1200, 2400, 4800, 9600, 19200 19200 h
-
0 to 30000
NO/YES
30000
NO
0 to 30000
NO/YES
0 to 30000
30000
NO
30000
-
-
-
-
-
%
- h
NO/YES
0 to 30000
- NO/YES h
- h
0 to 30000
NO/YES
0 to 30000
-
°C
NO/YES
-10.0 to +10.0
… …
°C -10.0 to +10.0
NO
30000
NO
30000
NO
30000
NO
0.0
…
0.0
°C
-
-
0.0 to 90.0 2.0
See Chap. 9
CONFIGURATIONS compressor
Auto, Manual Auto
- On/ Off Off
… …
-
…
See Chap. 9
CONFIGURATIONS defrost
- Auto, Manual Auto
On/ Off
See Chap. 9
CONFIGURATIONS
Auto, Manual
0 to 100
See Chap. 9
CONFIGURATIONS
Auto, Manual
Off
Steril.
Auto
0
-
Auto
Analogue output 3 in manual operating mode
Manufacturer default
New maintenance password
Reset alarms
Number of compressors
Compressor parallel op.
Enable compressor rotation
7.c, c11 Analogue output 3 in manual operating mode
7.d Reset the manufacturer default settings
7.d New maintenance password
7.d Reset the data for the alarms saved
7.e, e01 Number of compressors managed
7.e, e01 Enable parallel compressor operating mode in
7.e, e01 Enable compressor rotation
Type of evaporator fan control
Printer fitted
DCD manual status
Err. control
Man. error reset
Remove empty lines
Disable print queue
User light contr.
User output contr.
Config. dig. input 1
Relay logic
7.e, e02 Type of evaporator fan control
7.e, e04 Printer fitted
7.e, e05 Status of the DCD manual signal
7.e, e05 Enable print error control
7.e, e05 Manual print error reset
7.e, e06 Remove empty lines by the print
7.e, e06 Disable print queue
7.e, e07 Enable light control by the user
7.e, e07 Enable auxiliary output control by the user
7.f, f01 Device connected to digital input 1
7.f, f01 Logic of digital input 1
Config. dig. input 8
Relay logic
Conf. an. input1
Type
Min. value
Max. value
...
Conf. an. input5
Type
Min. value
Max. value
Config. Dig. output 1
Relay logic
Config. Dig. output 8
Relay logic
Config. analogue output.
1
Min. value
Max. value
7.f, f08 Device connected to digital input 8
7.f, f08 Logic of digital input 8
7.f, f09 Device connected to analogue input 1
7.f, f09 Type of probe 1
7.f Minimum value of probe 1
7.f Maximum value of probe 1
7.f ...
7.f, f14 Device connected to analogue input 5
7.f, f14 Type of probe 5
7.f, f14 Minimum value of probe 5
7.f, f14 Maximum value of probe 5
7.f, f15 Device connected to digital output 1
7.f, f15 Logic of digital output 1
7.f, f22
7.f, f22
Device connected to digital output 8
Logic of digital output 8
7.f, f23 Device connected to analogue output 1
7.f, f23 Minimum value of analogue output 1
7.f, f23 Maximum value of analogue output 1
Analogue output 3
Min. value
Max. value
Blast chiller temp. calculation
Prod. temp. calculation
Type
Enable high temp. al.
High temp. al. threshold
High temp. al. delay
Enable low temp. al.
7.f, f25 Device connected to analogue output 3
7.f, f25 Minimum value of analogue output 3
7.f, f25 Maximum value of analogue output 3
7.g, g01 Calculate blast chiller/freezer temperature when multiple probes used
7.g, g01 Calculate product temperature when multiple probes used
7.g, g02 Type of blast chiller/freezer temperature threshold
7.g, g03 Enable high temperature alarm
7.g, g03 High temperature alarm threshold
7.g, g03 High temperature alarm delay
7.g, g04 Enable low temperature alarm
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
35
%
-
-
-
-
0 to 100
NO/YES
0 to 9999
NO/YES
0 to 2
NO/YES
0
NO
1234
NO
1
NO
-
-
-
-
-
-
-
-
-
NO/YES
0: not used
1: none
2: on evaporator temperature
3: on temperature diff.
NO/YES
Off, On
Off, On
Off, On
Off, On
Off, On
NO/YES
NO
None
NO
Off
Off
Off
Off
Off
NO
-
-
-
NO/YES
See Chap. 9
CONFIGURATIONS
NO, NC
NO
On/Off
NO
… …
-
See Chap. 9
CONFIGURATIONS High press.
-
-
-
NO, NC
See Chap. 9
CONFIGURATIONS
--, 4 to 20 mA, 0 to 10 V, NTC,
PT1000, to
°C -99.9 to 99.9
NC
Blast chiller temp. 1
NTC
0.0
°C -99.9 to 99.9
… to
-
See Chap. 9
CONFIGURATIONS
-
--, 4 to 20 mA, 0 to 10 V, NTC,
PT1000, to
0.0
to
Antifreeze temp.
NTC
°C -99.9 to 99.9
°C
-
-99.9 to 99.9
See Chap. 9
CONFIGURATIONS
0.0
0.0
- NO, NC compressor
NO
… …
-
See Chap. 9
CONFIGURATIONS defrost
- NO
-
NO, NC
See Chap. 9
CONFIGURATIONS sterilisation
%
%
0.0 to 100.0
0.0 to 100.0
0.0
100.0
… …
See Chap. 9
-
%
%
0.0 to 100.0
0.0 to 100.0
0.0
100.0
-
-
Average, highest
Average, highest
- Relative, absolute
- NO/YES
° C -50.0 to 90.0 s
-
0 to 9999
NO/YES
Average
Average
Relative
YES
5.0
0
YES
Low temp. al. threshold
Low temp. al. delay
High temp. al. delay after defrost
High temp. al. delay after open door
Antifreeze alarm threshold
Antifreeze alarm delay
Generic al. delay
Low press. al. delay start
Low press. al. delay steady
High cond. temp. threshold
High cond. temp. differential
High cond. temp. al. delay
Min. blast chiller temp. setp.
Max. blast chiller temp. setp.
Blast chiller temperature differential
Min. product temp. setp.
Max. product temp. setp.
Set point delta with day/night switch
Diff. delta with day/night
Min. evap. fan. setp.
Max. evap. fan. setp.
Evap. fan diff.
Fan speed up time
Min. HACCP temp. setp.
Max. HACCP temp. setp.
HACCP alarm delay
Blackout duration during cycle
Blackout duration during conservation
Door open duration during cycle
Pause duration during cycle
Probe out-of-range delay
Probe not inserted differential
Sample time
7.g, g04 Low temperature alarm threshold
7.g, g04 Low temperature alarm delay
7.g, g05 High temperature alarm delay after defrost
7.g, g05 High temperature alarm delay after opening door
7.g, g06 Antifreeze alarm threshold
7.g Antifreeze alarm delay
7.g, g07 Generic alarm delay
7.g, g07 Low pressure alarm delay when starting
7.g, g07 Low pressure alarm delay in steady operation
7.g, g08 High condenser temperature alarm threshold
7.g, g08 High condenser temperature alarm differential
7.g, g08 High condenser temperature alarm delay
7.g, g09 Minimum blast chiller/freezer temperature set point
7.g, g09 Maximum blast chiller/freezer temperature set point
7.g Blast chiller/freezer temperature control differential
7.g, g10 Minimum product set point temperature
7.g, g10 Maximum product set point temperature
7.g, g11 Set point variation with day/night switch
7.g, g11 Differential variation with day/night switch
7.g, g12 Minimum evaporator fan control set point
7.g, g12 Maximum evaporator fan control set point
7.g, g13
Evaporator fan control differential. Parameter active only if fans controlled according to the temperature
7.g, g13 Fan speed up time
7.g, g14 Minimum HACCP high temperature set point
7.g, g14 Maximum HACCP high temperature set point
7.g, g14 HACCP temperature alarm delay
7.g, g15 Allowing duration of HACCP blackout when running a cycle
7.g, g15 Allowing duration of HACCP blackout during the conservation phase
7.g, g16 Allowing duration of door open when running a cycle
7.g, g16 Allowing pause duration when running a cycle
7.g, g17 Time in which the probe error is ignored before a cycle
7.g, g17 Differential for control probe not inserted
7.g, g17 Time for checking incorrect probe insertion and product overload
Type of defrost
Start defrost t.
End defrost t.
Defrost activation delay
Defrost delay output
Min. time between def.
Min. defrost duration
Max. defrost duration
Time between defrosts
Dripping time
Post-Dripping time
Comp. prot. priority over def.
7.g, g18 Type of defrost
7.g, g18 Start defrost threshold set point
7.g, g18 End defrost threshold set point
7.g, g19 Start defrost delay after reaching the threshold
7.g, g19 Defrost output activation delay
7.g, g20 Minimum time between different defrosts
7.g, g20 Minimum defrost duration
7.g, g20 Maximum defrost duration
7.g, g21 Time between different defrosts
7.g, g21 Dripping duration
7.g, g21 Fan off time after dripping
7.g, g22 Compressor protection or defrost priority
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
36
° C -50.0 to 90.0 s 0 to 9999 s s
0 to 9999
0 to 9999
° C -50.0 to 90.0 s 0 to 9999 s s
0 to 9999
0 to 9999 s 0 to 9999
° C -50.0 to 90.0
° C -50.0 to 90.0 s 0 to 9999
° C -50.0 to 90.0
° C -50.0 to 90.0
° C 0.0 to 90.0
° C -50.0 to 90.0
° C -50.0 to 90.0
° C 0.0 to 90.0
° C 0.0 to 90.0
° C -50.0 to 90.0
° C -50.0 to 90.0
° C 0.0 to 90.0 s 0 to 999
° C -50.0 to 90.0
° C -50.0 to 90.0 min 0 to 9999 min 0 to 9999 min 0 to 9999
3.0
0 s 0 to 9999 s 0 to 9999 min 0 to 9999
° C 0.0 to 20.0 min 0 to 9999
-
0: not used
1: temperature, with heater
2: temperature, with gas
3: time, with heat.
4: time, with gas
5: temp. con. w/ heat.
° C -50.0 to 90.0
° C -50.0 to 90.0 s s
0 to 9999
0 to 9999 min 0 to 480 s 0 to 9999 min 0 to 480 h s
0 to 999
0 to 9999 min 0 to 15
- Comp. , Defrost
30
30
5
3.0
5
-
-3.0
4.0
180
10
30
120
10
8
120
1
Comp.
30
40.0
4.0
30
30
30
-25.0
30
30
30
-40.0
10.0
2.0
-40.0
10.0
2.0
1.0
0.0
50.0
5
1
2.0
0
2.0
5.0
120
Defrost differential with temperature control 7.g, g22 Temperature controlled defrost differential
Advanced defrosts
Nominal defrost
Prop. factor
Min. compressor on time
Min. compressor off time
Minimum time between starts of same compressor
Comp. and fan start delay at on
Phase 2 delay
Comp. off with door
Door stop delay
Duty setting on time
Duty setting off time
Continuous operation time
Low temp. delay after continuous op.
Enable pump down
P. down valve and comp. delay
End pump down
Compressor auto start during pump down
Max. pump down time
Comp. on time with generic alarm
Comp. off time with generic alarm
Evap. fan with comp. off
Cond. fan setp.
Cond. fan diff.
Min. phase control
Max phase control
Triac pulse width
Mains frequency
Off time with light sensor
Light activation in Off status
Aux activation in Off status
Maximum sterilisation duration
Dig. in 1 status
Digital input 1 logic
Dig. in 8 status
Dig. in 8 logic
An. input1 value
An. input1 type
7.g, g23 Type of advanced defrost
7.g, g23 Nominal defrost duration
7.g, g23 Proportional factor in defrost duration
7.g, g24 Minimum compressor time on
7.g, g24 Minimum compressor off time
7.g, g24 Minimum time between compressor starts
7.g, g25 Initial delay in starting compressor and fans
7.g, g25 Minimum time between starts of different compressors
7.g. g25 Compressor behaviour with door open
7.g, g25 Delay after which compressors and fans start again with door open
7.g, g26 Duty setting on time
7.g, g26 Duty setting off time
7.g, g27 Continuous operating mode duration
7.g, g27 Low temperature delay after continuous operating mode
7.g, g28 Enable pump down
7.g, g28 Pump down valve and compressor delay
7.g, g29 Select type of end pump down
7.g, g29 Enable auto start compressor during pump down
7.g, g29 Maximum pump down duration
7.g, g30 Compressor operating time with generic alarm
7.g, g30 Compressor off time with generic alarm
7.g, g31 Evaporator fan behaviour with compressor off
7.g, g31 Temperature set point to stop condenser fans
7.g, g31 Temperature differential to stop condenser fans
7.g, g32 Minimum phase shift for PWM output
7.g, g32 Massimo phase shift for PWM output
7.g, g32 Triac pulse width for PWM output
7.g, g32 Mains frequency for PWM output
7.g, g33 Off time with light sensor
7.g, g33 Light activation in OFF status
7.g, g33 Auxiliary output activation in OFF status
7.g, g34 Maximum sterilisation duration
7.h, h01 Status of digital input 1
7.h, h01 Logic of digital input1
7.h, h04 Status of digital input 8
7.h, h04 Logic of digital input 8
7.h, h05 Value read by analogue input 1
7.h Type of probe 1
An. input 5 value 7.h, h07 Value read by analogue input 5
An. input 5 type
Device connected to dig. out 1
Dig. out 1 operation
Dig. out 1 status in manual mode
...
7.h, h07 Type of probe 5
7.h, h08 Device connected to digital output 1
7.h, h08 Operating mode of digital output 1
7.h, h08 Status of digital output 1 in manual operating mode
7.h ...
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
37
% s s
° C 0.0 to 90.0
-
0: not used
1: none
2: variable time
3: skip defrost
4: variable time + skip
% 0 to 100
0 to 100
0 to 9999
0 to 9999
2.0
None
65
50
60
180 s 0 to 9999 s s
0 to 9999
0 to 9999
- On, Off s 0 to 9999 min 0 to 9999 min 0 to 9999 min 0 to 9999 s
-
0 to 9999
NO/YES s
-
0 to 9999
By time, by press.
- NO/YES min 0 to 9999 min 0 to 9999 min 0 to 9999
- Always on, on with comp.
° C -50.0 to 90.0
° C 0.0 to 90.0
% 0 to 100
% 0 to 100 ms 0.0 to 10.0
Hz 50, 60 min 0 to 9999
-
-
ON/OFF
ON/OFF min 0 to 9999
- Off, On
- NO, NC
480
30
NO
30
By time
NO
5
5
360
60
180
On
360
5
10
10
Always on
35.0
2.0
25
75
2.5
50
5
OFF
OFF
500
-
NC
-
-
Off, On
NO, NC
-
NO
°C …
-
--, 4 to 20 mA, 0 to 10 V, NTC,
PT1000, …
-
NTC
°C …
-
--, 4 to 20 mA, 0 to 10 V, NTC,
PT1000, to
-
See Chap. 9
CONFIGURATIONS
-
NTC compressor
- Auto, Manual Auto
- On/ Off
… …
Off
…
Device connected to dig. out 8
Dig. out 8 operation
Dig. out 8 status in manual mode
Device connected to an. out 1
An. out 1 operation
An. out 1 status in manual mode
7.h, h15 Device connected to digital output 8
7.h, h15 Operating mode of digital output 8
7.h, h15 Status of digital output 8 in manual operating mode
7.h, h16 Device connected to analogue output 1
7.h, h16 Operating mode of analogue output 1
7.h, h16 Status of analogue output 1 in manual operating mode
-
-
-
-
-
On/ Off
See Chap. 9
CONFIGURATIONS
Auto, Manual
Off
Steril.
Auto
-
See Chap. 9
CONFIGURATIONS compressor
Auto, Manual Auto
… 0.0 to 100.0 dd mm yy hh
Device connected to an. out 3
An. out 3 operation
An. out 3 status in manual mode
CAREL default
Save config.
New manufacturer password
Clock - main menu
7.h, h16 Device connected to analogue output 3
7.h, h16 Operating mode of analogue output 3
7.h, h16 Status of analogue output 3 in manual operating mode
7.i Reset the CAREL default settings
7.i Save the manufacturer configuration
7.i New manufacturer password mm
Log - main menu
8.
8.
8.
8.
8.
Day setting
Month setting
Year setting
Hour setting
Minute setting
Save HACCP alarm data (for each alarm, the date, time, code, description
Save alarm data (for each alarm, the date, time, code, description and help
-
-
-
-
-
-
-
See Chap. 9
CONFIGURATIONS
Auto, Manual
… 0.0 to 100.0
- NO/YES
- NO/YES
- 0 to 9999
-
1 to 31
1 to 12
0 to 99
0 to 23
0 to 59
to
Enable continuous print
Print last HACCP
Print last 3 HACCP
Print last 10 HACCP
Print last cycle
9.c Enable continuous printing of the HACCP alarms and the cycle data
9.c Print last HACCP alarm
9.c
9.c
9.c
Print last 3 HACCP alarms
Print last 10 HACCP alarms
Print last cycle completed
Print last 3 cycles 9.c Print last 3 cycles completed
Print last 10 cycles 9.c
Lock keypad - main menu
Print last 10 cycles completed
Lock keypad 10. Used to lock the keypad
-
-
-
-
-
-
-
-
-
to
NO/YES
NO/YES
NO/YES
NO/YES
NO/YES
NO/YES
NO/YES
See paragraph 5.10
Note: all the temperatures can be expressed in degrees °C or °F, depending on the setting of the corresponding parameter (unit of measure – 6.d)
-
-
NO
NO
NO
NO
NO
NO
NO
-
-
-
-
-
Condenser fan
Auto
-
NO
NO
1234
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
38
E01
E02
E03
E51
E52
E53
E1
E2
E6
7 TABLE OF ALARMS
The table below shows the list of alarms signalled by Blast Chiller.
These each have a code (shown in the first column) and a message that is displayed (third column).
Code Description
HA
HF
HACCP alarm, high temperature
HACCP alarm, blackout during conservation
HC
HD
HE
HACCP alarm, blackout during cycle
HACCP alarm, cycle ended after maximum time due to probe error
HACCP alarm, cycle ended after maximum time
Da
Blast chiller/freezer temperature probe 1 not working
Blast chiller/freezer temperature probe 2 not working
Blast chiller/freezer temperature probe 3 not working
Product temperature probe Q not working
Product temperature probe 2 not working
Product temperature probe 3 not working
Evaporator temperature probe not working
Antifreeze temperature probe not working
Condenser temperature probe not working
External alarm active
OF
OV
PP
OP cht
CHT
PD
Ed dor
DP
PL
LP
HP
OC
Door open during conservation
Door open during the cycle
Pause too long during the cycle
Low pressure
High pressure
Compressor not working
Fans not working
Compressor or fans not working
Product probe not inserted correctly
Overload: excess product
High condenser temperature warning: clean the condenser
High condenser temperature alarm
Warning: pump down ended after exceeding maximum duration
Warning: defrost ended after exceeding maximum duration
EE
HI
LO
Ptr
MC1 Compressor maintenance required
MC2 Compressor 2 maintenance required
MEF Evaporator fan maintenance required
MCF Condenser fan maintenance required
MU
ML
Etc
AFr
Unit maintenance required
UV light maintenance required
Clock not working
Antifreeze alarm
Controller not working
High temperature alarm
Low temperature alarm
Printer not working
Automatic
Manual
Automatic
Automatic
Manual
Manual
Manual
Manual
Manual
Automatic
Manual
Manual
Automatic
Automatic
Manual
Manual
Type of reset Notes
Manual
Manual
Disabled if the door remains open for a preset time
Manual
Manual
Manual
Automatic
Automatic
If only one probe is fitted or both are faulty the duty setting function cannot be activated, if enabled
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
Automatic
As for alarm ED1
As for alarm ED1
If only one probe is fitted or both are faulty the cycle cannot end by temperature
As for alarm E51
As for alarm E51
Fans on
Manual
Automatic
Automatic
Automatic
Fans on
All the devices are off except for the lights and auxiliary outputs, which follow the settings of the related parameters; the pump down cannot be performed. Compressors and fans follow the settings of the related parameters
The following functions cannot be run: sterilisation, compressors, evaporator fans, cycles, continuous operating mode and defrost
The cycle is interrupted
The cycle is interrupted
Automatic
Manual
Manual
Manual
Manual
Automatic
Automatic
The compressors and pump down are disabled
Compressors off
Compressors off
Fans and compressors off
Fans and compressors off
The cycle ends by time
Compressors off
Auto start procedure disabled
Sterilisation not available
Cannot schedule the actions (defrost, lights, auxiliary outputs)
Compressors off
Controller not working
Disabled if the door remains open for a preset time and after defrost
Compressors off and disabled during continuous operating mode
Printer disabled
7.1 High and low temperature alarm
Parameters: high temperature alarm threshold, low temperature alarm threshold, temperature alarm differential, type of temperature alarm threshold, high temperature alarm delay, low temperature alarm delay, enable high temperature alarm, enable low temperature alarm.
Description of the function: the high and low temperature alarm thresholds may be either absolute or relative to the set point, depending on the settings made for the type of temperature alarm threshold.
The management of the high and low temperature alarms is displayed in Figure 7.1, with relative thresholds; the operating principle is the same for the absolute thresholds, considering the appropriate values.
The high and low temperature alarms can be disabled by setting the enable/disable high and low temperature alarm parameters.
Low temperature alarm
Differential
Low temp. thresh.
Set point
High temp. thresh.
High temperature alarm
Differential
Fig. 7.1 High and low temperature alarm.
Blast chiller temperature
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
39
8 TABLE OF VARIABLES SENT TO THE SUPERVISOR
Digital 36
Digital 37
Digital
Digital
38
39
Digital 40
Digital 41
Digital 42
Digital 43
Digital 44
Digital 45
Digital 46
Digital 47
Digital 48
Digital 49
Digital 50
Digital 51
Digital 52
Digital 53
Digital 54
Digital 55
Digital 56
Digital 57
Digital 58
Digital 60
Blast Chiller can be connected to various supervisory systems, using the following BMS communication protocols: Carel, Modbus and Lon.
A BMS or FieldBus serial port is used for the connection.
The various connection protocols are managed using the following optional cards:
•
Carel RS485: code PCOS004850
•
Carel RS232: code PCO100MDM0, code PCOS00FD20
•
Modbus RS485: code PCOS004850
•
Lon Works FTT10: code PCO10000F0
•
BACnet RS485: code PCO1000BA0
•
BACnet Ethernet: code PCO1000WB0
•
Trend: code PCO100CLP0.
Blast Chiller uses the CAREL PlantVisor PRO software as the supervisor application.
The table below shows the variables sent to the supervisor.
Tipe addres R/W
Digital
Digital
1
2
R
R
Description
Product temperature 1 probe error
Product temperature 2 probe error
Digital
Digital
Digital
Digital
Digital
Digital
3
4
5
6
7
8
Digital 9
Digital 10
Digital
Digital
11
12
Digital 13
Digital 14
Digital 15
R
R
R
R
R
R
R
R
R
R
R
R
R
Product temperature 3 probe error
Room temperature 1 probe error
Room temperature 2 probe error
Room temperature 3 probe error
Condenser temperature probe error
Evaporator temperature probe error
Antifreeze temperature probe error
Compressor 2 maintenance required
Condenser fan maintenance required
Evaporator fan maintenance required
UV light maintenance required
High condenser temperature warning
Condenser high temperature alarm
Defrost maximum time
Door opened during conservation
Low pressure alarm
Digital
Digital
Digital
Digital
16
17
18
19
Digital 20
Digital 21
Digital 22
Digital 23
Digital 24
Digital 25
Digital 26
Digital
Digital
27
28
Digital 29
Digital 30
Digital 31
Digital 32
Digital 33
Digital 34
Digital 35
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R
Black out during conservation phase (HACCP)
Black out during cycle execution (HACCP)
High temperature alarm (HACCP)
Cycle ended by maximum time for probe error (HACCP)
Cycle ended after maximum time (HACCP)
Low temperature alarm
On-off digital input
External alarm from digital input
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R
R
R
R
R
R
R
R
R
Low pressure digital input
High pressure digital input
Defrost enable digital input
Defrost activation digital input
Overload
Day/night digital input
Auxiliary output activation digital input
Compressor
Light
Sterilization
Compressor 2nd step
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
40
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
Digital 61
Analog
Analog
Analog
Analog
9
10
11
12
Analog 13
Analog 14
Analog
Analog
15
16
Analog 17
Analog 18
Analog
Analog
Analog
19
20
21
Analog 22
Analog 24
Analog 25
Analog 26
Analog
Analog
Analog
27
28
29
Analog
Analog
Analog
Analog
Analog
Analog
Analog 36
Analog 37
Analog
Analog
38
39
Integer
Integer
1
2
30
31
32
33
34
35
Integer
Integer
3
4
Integer 5
Integer 6
Integer
Integer
Integer
7
8
9
Integer 10
Integer 11
Integer 12
Digital 62
Digital 63
Digital 64
Digital
Digital
65
66
Digital 67
Digital 68
Digital 69
Digital 70
Digital 71
Digital
Digital
72
73
Digital 74
Digital 75
Digital 76
Digital 77
Digital
Digital
78
79
Digital
Digital
80
81
Digital 82
Digital 83
Digital
Analog
84
1
Analog
Analog
Analog
Analog
2
3
4
5
Analog 6
Analog 7
Analog 8
High temperature alarm enable
Low temperature alarm enable
Fan status during defrost
Compressors mode
Manufacturer parameters restore
On/off by supervisor system
Manual defrost by supervisor system
Light by supervisor system
Celsius/Fahrenheit temperature measure unit
Pause too long during cycle
Door opened during cycle
Reset alarm history
Fan overload alarm
High pressure alarm
Room temperature probe 1
Room temperature probe 2
Room temperature probe 3
Product temperature probe 1
Product temperature probe 2
Product temperature probe 3
Evaporator temperature probe
Antifreeze temperature probe
Evaporator fan analog output
Condenser fan analog output
Sterilization analog output
Product setpoint during phase 1
Product setpoint during phase 2
Product setpoint during phase 3
Room setpoint during phase 1
Room setpoint during phase 2
Room setpoint during phase 3
Antifreeze threshold
Differential of the condenser high temperature alarm
Condenser high temperature alarm threshold
Evaporator fan setpoint
Evaporator fan differential
High temperature alarm threshold (HACCP)
Room temperature alarm differential
High temperature alarm threshold
Low temperature alarm threshold
Room temperature regulation differential
End defrost temperature probe
Start defrost temperature
Conservation room temperature setpoint
Working hours of the compressor 1 high part
Working hours of the compressor 1 low part
Working hours of the compressor 2 high part
Working hours of the compressor 2 low part
Remaining time of the cycle phase
Cycle phase
Cycle phase 3 duration
Cycle phase 2 duration
Cycle phase 1 duration
Year
Month
41
Integer 13
Integer 14
Integer 15
Integer
Integer
Integer
16
17
18
Integer
Integer
Integer
Integer
19
20
23
24
Integer 25
Integer 26
Integer 27
Integer 28
Integer 29
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
Day
Hour
Minute
Day of the week
Type of defrost
Evaporator fan management
Room high temperature alarm delay
Room low temperature alarm delay
Room temperature alarm delay (HACCP)
Low pressure start delay
Low pressure delay
Maximum duration defrost time
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
42
9 CONFIGURATIONS
Below are the possible Blast Chiller configurations, depending on the type of pCO board used.
Analogue inputs
No.
B1
B2
B3
B4 pCO
3
Small
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze B 5
Digital inputs
No.
ID 1
ID 2
ID 3
ID 4
ID 5
ID 6
ID 7
ID 8 pCO
3
Small
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
No.
Digital outputs pCO
3
Small pCO
XS
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
Blast chiller temperature 1/ product temperature1/ evaporator temperature/ condenser temperature/ product temperature 2/ product temperature 3/ blast chiller temperature 2/blast chiller temperature 3/ antifreeze
--- pCO
XS
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
On-Off / generic alarm/ door switch/ low pressure/ high pressure/ enable defrost/ activate defrost/ overload/ compressor overload/ fan overload/ light sensor/ night/day switch/ activate aux output
---
---
DO1
DO2
DO3
DO4
DO5
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater pCO
XS
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
DO 6
DO 7
DO 8
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
Compressor / defrost/ generic alarm/ evaporator fans/ lights/ aux output/ sterilisation/ condenser fans/pump down/second-phase compressor/ probe heater
---
---
---
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
43
Analogue outputs
No.
Y1
Y2
Y3
Y 4 pCO
3
Small
Evaporator fans/ condenser fans/ sterilisation
Evaporator fans/ condenser fans/ sterilisation
Evaporator fans/ condenser fans/ sterilisation
The following tables, on the other hand, show the standard configurations used by default.
Analogue inputs
No.
B1
B2
B3
B4
B 5 pCO
3
Small
Room temperature 1
Product temperature 1
Evaporator temperature
Condenser temperature
Antifreeze
Digital inputs
No.
ID 1
ID 2
ID 3
ID 4
ID 5
ID 6
ID 7
ID 8
No.
Y1
Y2
Y3
Y 4 pCO
3
Small
On-Off
Generic alarm
Low pressure
Door switch
Activate defrost
Overload
Activate aux output
High pressure
No.
DO1
Digital outputs pCO
3
Small
Compressor
DO2
DO3
Generic alarm
Light
DO4
DO5
DO 6
DO 7
DO 8
Aux output
Second-phase compressor
Pump down
Probe heater
Defrost
Analogue outputs pCO
3
Small
Sterilisation
Evaporator fans
Condenser fans
CAREL reserves the right modify or change its products without prior warning.
pCO
XS
Evaporator fans/ condenser fans/ sterilisation
Evaporator fans/ condenser fans/ sterilisation
Evaporator fans (PWM)/ condenser fans (PWM)
--- pCO
XS
Room temperature 1
Product temperature 1
Evaporator temperature
Condenser temperature
--- pCO
XS
On-Off
Generic alarm
Low pressure
Door switch
Activate defrost
Overload
---
---
---
---
--- pCO
XS
Compressor
Generic alarm
Light
Aux output
Defrost pCO
XS
Sterilisation
Evaporator fans
Condenser fans (PWM)
---
Blast Chiller +030220851 - rel. 1.1 - 28.02.2008
44
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47
CAREL S.p.A.
Via dell’Industria, 11 - 35020 Brugine - Padova (Italy)
Tel. (+39) 049.9716611 Fax (+39) 049.9716600
http://www.carel.com
- e-mail:
[email protected]
48

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Key features
- Blast chilling, blast freezing
- Conservation of foodstuffs
- Customisable cycles
- Smart defrosts
- Built-in clock
- Reduced electricity consumption
- Graphic interface
- User-friendly menu