+050004122 - rel. 1.2 - 28.07.2011
EASY FREEZE (PZD*C0****): electronic controllers for low temperature ventilated refrigeration units
NO POWER
& SIGNAL
CABLES
TOGETHER
READ CAREFULLY IN THE TEXT!
Description
PJEZ* represent a range of electronic microprocessor controllers with LED display developed for the management of refrigerating units, display cabinets and showcases.
Technical specifications
•
•
•
•
•
•
Dimensions (mm)
36
33
28.5
74
Electronic controllers for low temperature ventilated refrigeration units
Power supply 115 or 230Vac
Ambient probe NTC
Compressor relay 16A
Defrost relay 8A
Evaporator fan relay 8A
71x29
81
Display and functions
10
58
65,29
3
Fig.1
Panel mounting
During normal operation, the controller displays the temperature read by probe 1. In addition, the display has
LEDs that indicate the activation of the control functions (see Table 1), while the 3 buttons can be used to
activate/deactivate some of the functions (see Table 2).
LEDs and associated functions
Front (with 2 screws ø 2,5x12 mm)
icon
1
Pozidriv type
function
on
on
on
all
compressor
fan
defrost
alarm
Do not tighten
excessively
start up
blink
request
request
request
-
ON
ON
ON
ON
Tab. 1
max 2,5
Table of functions activated by the buttons
Fig.2
normal operation
button
Rear (with 2 quick-fit side brackets)
2
PUSH
1
normal operation
OFF
off
off
off
no alarm
ON
3
2
serial conv.
prog. key
IROPZ485S0
IROPZKEY* or
PSOPZKEY*
Fig. 3
pressing the button alone
start up
pressed together
up
ON/OFF
more than 3 s:
toggle ON/OFF
Pressed together start/stop continuous cycle
down
defrost
more than 3 s:
start/stop defrost
for 1 s display
firmware vers. code
set mute
- 1 s.: display/set the setpoint
- more than 3 s: access parameter
setting menu (enter password ‘22’)
- mute audible alarm (buzzer)
for 1 s RESET
current
EZY set
Tab. 2
Electrical connections
PZD0C0P001
Setting the setpoint (desired temperature)
Step Action
Effect
Meaning
1
Keep SET button pressed for 2 s After 1 sec currently setpoint value will It’s regulation setpoint
flash on display
currently active
2
Press UP or DOWN buttons
Setpoint value will chang
Set desired value
3
Press SET button
Controller will visualize temperature
read by probes again
Setpoint is modified and
saved
230 Vac
Tab. 3
Fig. 4
NTC
PROBES
N
230V~
-10T50
8(4)A 10(10)A
EN60730-1
8A 2FLA 12LRA 12A 10FLA 60LRA UL 873
250 Vac
NTC
PROBES
1 2 3 4 5
L
6 7
L
N
115V~
SERIAL
CONV
PROG.
KEY
8 9 10 11
AMB. T.
PZD4C0H101
L
8 9 10 11
DEF. T.
L
6 7
AMB. T.
1 2 3 4 5
PROG.
KEY
Ref. C614A217/R0
8A 2FLA 12LRA 12A 10FLA 60LRA UL 873
250 Vac
Ref. C614A216/R0
EN60730-1
Use copper conductors only
10(10)A
DI / NTC
8(4)A
SERIAL
CONV
DI / NTC
-10T50
DEF. T.
PZD4C0H001
Use copper conductors only
Accessing and setting the parameters
Fig. 5
Step
1
Action
Effect
After 3 sec display will visualize “PS”
Meaning
2
Keep SET button pressed
for 3 s
Press SET button again
Password is requested
Display will visualize “0” blinking
3
Press UP or DOWN button
Visualized value on display will change
4
Press SET button
After 5 sec the first parameter, “/5”, will be It’s the name of the first
visualized on display
parameter
5
Press UP or DOWN button
Parameter list will be scrolled on display
(refer to Table of parameters)
6
Press SET button
Display will visualize value of the selected It’s the currently parameter
parameter
value
7
Press UP or DOWN button
Parameter value visualized on display will Set desired value
change
8
Press SET button
Display will visualize parameter name
again
Attention: parameters
updating is not yet active
9
Repeat steps 5, 6, 7 and 8
for all desired parameters
10
Keep SET button
pressed for 5 s
Controller will visualize temperature read
by probes again
Attention: now parameters updating will be active
Insert password “22”
Select desired parameter
Tab. 4
Table of parameters
Switching the device ON/OFF
Parameter
PS
/
/5
/6
/C1
/C2
r
St
rd
PASSWORD
PROBE PARAMETERS
Select °C / °F ( 0 = °C; 1 = °F)
Disable decimal point (1 disabled)
Probe calibration
Probe 2 calibration
CONTROL PARAMETERS
Control temperature
Control differential (hysteresis)
c
c0
c1
c4
COMPRESSOR PARAMETERS
Comp. and fan start delay after start-up
Min. time between successive comp. starts
Compressor safety (duty setting)
d
d0
DEFROST PARAMETERS
Type of defrost (0= heater; 1= hot gas; 2= heater by time;
3= hot gas by time; 4= heater by time with temp. cont.)
Interval between two defrosts
End defrost temperature
Max. or effective defrost duration
Defrost when the instrument is switched on (1= activated)
Disable temperature display during defrost (1= display disabled)
Dripping time after defrost
Defrost probe reading
dI
dt
dP
d4
d6
dd
d/
A
A0
AL
AH
Ad
F
F0
F1
F2
F3
OTHER SETTINGS
Enable keypad
0= keypad disabled
1= keypad enabled
2= keypad enabled except for ON/OFF function
EZY restore the Default settings
UOM
-
0
0
-50.0
-50.0
°C/°F
°C/°F
1
1
50.0
50.0
0
0
0.0
0.0
-50.0 90.0
0.0 19.0
-18.0 °C/°F
2.0 °C/°F
0
0
0
100
100
100
0
1
15
min
min
min
0
4
0
-
0
50.0
1
0
0
0
-
199
130.0
199
1
1
15
-
6
8
25
0
1
1
-
h/min
°C/°F
min/s
min
°C/°F
-20.0
-50.0
-50.0
0
20.0
250.0
250.0
199
-2.0
-50
50
0
°C/°F
°C/°F
°C/°F
min
0
1
1
-
50.0
0
0
130.0 2
1
1
1
1
°C/°F
-
0
2
1
-
0
1
0
Tab. 5
Table of alarms
Alarm
code
E0
E1
LO
HI
EE
EF
Ed
dF
buzzer and
alarm relay
active
inactive
active
active
inactive
inactive
inactive
inactive
LED
Description
Parameters involved
ON
ON
ON
ON
ON
ON
ON
OFF
probe 1 error= control
probe 2 error= defrost
low temperature alarm
high temperature alarm
unit parameter error
operating parameter error
defrost ended by timeout
defrost running
[d0 = 0 / 1]
[AL] [Ad]
[AH] [Ad]
[dP] [dt] [d4] [A8]
[d6=0]
Press DOWN for more than 3 s (the defrost starts only if the temperature conditions are valid).
Continuous cycle
Press UP and DOWN together for more than 3 s.
Technical specifications
115 Vac +10 / -15% 50/60 Hz
230 Vac -10% +15% 50/60 Hz
rated power
inputs
relay outputs
3,5 VA
NTC probes
16 A relay UL: 12 A Res. 5 FLA 30 LRA - 240 Vac C300,
EN60730-1: 12(2) A NO/NC, 10(4) A up to 60 °C NO,
2(2) A CO - 250 Vac
2HP ralay UL: 12 A Res. 5 FLA 60 LRA - 240 Vac,
EN60730-1: 10(10) A - 250 Vac,
8 A relay UL: 8 A Res. 2 FLA 12 LRA - 240 Vac C300,
EN60730-1: 8(4) A NO, 6(4) A NC, 2(2) A CO - 250 Vac
type of probe
Std CAREL NTC 10 K at 25 °C
connections
Screw terminals for cables with cross-sect. from 0.5 mm2 to 1.5 mm2
Rated maximum current per terminal 12 A
assembly
Terminal: using screws from the front panel or with rear brackets
Interface: wall mounting, 4 screws, spacing 101x151 mm
display
3 digit LED display with sign (-199 to 999) and decimal point; six status LEDs
operating conditions
-10T50 °C - humidity <90% rH non-condensing
storage conditions
-20T70 °C - humidity <90% rH non-condensing
range of measurement
-50T90 °C (-58T194 °F) - resolution 0.1 °C/°F
front panel index of protection
panel installation with IP65 type 1 gasket
case
plastic terminal, 81x36x65 mm
classification according to protection
Class II when suitably integrated
against electric shock
environmental pollution
normal
PTI of the insulating material
250 V
period of stress across the insulating parts long
category of resistance to heat and fire
category D (UL94 - V0)
immunity against voltage surges
category 1
type of action and disconnection
1C relay contacts
no. of relay automatic operating cycles
EN60730-1: 100,000 operations
UL:
30,000 operations (250 Vac)
software class and structure
Class A
cleaning the instrument
Only use neutral detergents and water.
cable max. lenght
serial: 1 km
probes: 30 m
relay: 10 m
Safety standards
How to restore the Default settings (refer to table of parameters in this
sheet)
1) Access parameter EZY (entering password 22 and scroll parameter list).
2) Select the desired configuration:
• EZY = 0
 No changes;
• EZY = 1
 Restore of default settings (refer to Table of parameters in this sheet);
3) Exit the setting procedure (holding SET button for more than 3 sec).
4) Power off the device and then power it on again while holding SET button.
5) The display shows “CE” to indicate that the configuration has been restored.
READ CAREFULLY IN THE TEXT!
Manual defrost
Tab. 7
Note: do not run the power cable less than 3 cm from the bottom part of the device or from the probes;
for the connections only use copper wires.
Tab. 6
NO POWER
& SIGNAL
CABLES
TOGETHER
Press UP for more than 3 s. The control and defrost algorithms are now disabled and the instrument displays the
message “OFF” alternating with the temperature read by the set probe.
power supply
ALARM PARAMETERS
Alarm and fan differential
Low temperature alarm threshold/deviation (AL= 0; alarm disabled)
High temperature alarm threshold/deviation (AH= 0; alarm disabled)
Low and high temperature alarm delay
FAN PARAMETERS
Fan management: 0= fans on excluding specific phases;
1= fans on according to parameter F1 excluding specific phases
Fans shutdown temperature
Fans OFF when compressor OFF
Fans status during defrost: 0= fan ON; 1= fan OFF
H
H2
Min. Max. Def.
0
200 22
WARNING: separate as much as possible the probe and digital input signal cables from the cables carrying
inductive loads and power cables to avoid possible electromagnetic disturbance. Never run power cables
(including the electrical panel wiring) and signal cables in the same conduits.
compliant with the relevant European standards. Installation precautions:
• the connection cables must guarantee insulation up to 90 °C;
• ensure a space of at least 10 mm between the case and the nearby conductive parts;
• digital and analogue input connections less than 30 m away; adopt suitable measures for separating the
cables so as to ensure compliance with the immunity standards;
Secure the connection cables of the outputs so as to avoid contact with very low voltage parts.
IMPORTANT WARNINGS
The CAREL product is a state-of-the-art device, 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.
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. The failure to complete such phase, which is required/indicated in the user manual,
may cause the final product to malfunction; CAREL accepts no liability in such cases. The customer must use
the product only in the manner described in the documentation relating to the product. 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.
Disposal of the product
The appliance (or the product) must be disposed of separately in accordance with the local waste disposal
legislation in force.
CAREL reserves the right to modify the features of its products without prior notice.
CAREL INDUSTRIES HQs
Via dell’Industria, 11 - 35020 Brugine - Padova (Italy)
Tel. (+39) 0499716611 – Fax (+39) 0499716600 – http://www.carel.com – e-mail: carel@carel.com
+050004122 - rel. 1.2 - 28.07.2011