User Manual - Metrix Electronics Ltd

User Manual - Metrix Electronics Ltd
Assisting the automation
industry since 1986
User manual
CONTROLLER
PUR-94
•
•
•
Firmware: v.1.00 or higher
Input type: universal
4 x 20 mm display
Read the user's manual carefully before starting to use the unit or software.
Producer reserves the right to implement changes without prior notice.
2015.10.01
PUR-94_INSSXEN_v.1.01.003
User manual - CONTROLLER PUR-94
CONTENTS
1. BASIC REQUIREMENTS AND USER SAFETY........................................................................................3
2. GENERAL CHARACTERISTICS................................................................................................................4
3. TECHNICAL DATA......................................................................................................................................5
4. DEVICE INSTALLATION............................................................................................................................8
4.1. UNPACKING.......................................................................................................................................8
4.2. ASSEMBLY........................................................................................................................................8
4.3. CONNECTION METHOD.................................................................................................................10
4.4. MAINTENANCE................................................................................................................................19
5. FRONT PANEL DESCRIPTION................................................................................................................19
6. PRINCIPLE OF OPERATION...................................................................................................................20
6.1. MEASUREMENT MODE..................................................................................................................20
6.1.1. detection OF THE PEAK VALUES.........................................................................................21
6.2. PID REGULATORS..........................................................................................................................22
6.3. CONTROL OF THE RELAY OUTPUTS..........................................................................................27
6.3.1. One threshold mode................................................................................................................28
6.3.2. Two thresholds mode..............................................................................................................29
6.3.3. PWM Controlling.....................................................................................................................30
7. DEVICE PROGRAMMING.........................................................................................................................32
7.1. PROGRAMMING MENU..................................................................................................................32
7.2. PARAMETERS EDITION.................................................................................................................33
7.2.1. Numeric parameters (digit change mode)...............................................................................33
7.2.2. Numeric parameters (slide change mode)..............................................................................33
7.2.3. Switch parameters (“LIST” type).............................................................................................34
7.3. MENU DESCRIPTION.....................................................................................................................34
7.3.1. “rEL1” menu.............................................................................................................................35
7.3.2. “bEEP” menu...........................................................................................................................38
7.3.3. “inPt” menu (common parameters).........................................................................................38
7.3.4. “inPt” menu (parameters of temperature inputs).....................................................................39
7.3.5. “inPt” menu (parameters of current and voltage inputs).........................................................39
7.3.6. ”OutP” menu............................................................................................................................41
7.3.7. “CtrL” Menu.............................................................................................................................43
7.3.8. ”bri” parameter.........................................................................................................................47
7.3.9. ”HOLd” menu...........................................................................................................................47
7.3.10. ”SECu” menu.........................................................................................................................48
7.3.11. ”rS” menu...............................................................................................................................48
7.3.12. ”Edit” parameter....................................................................................................................49
7.3.13. ”dEFS” parameter..................................................................................................................49
7.3.14. ”SErv” menu..........................................................................................................................49
7.4. MENU STRUCTURE........................................................................................................................50
8. THE ALARM LED......................................................................................................................................53
9. OVER-CURRENT PROTECTION.............................................................................................................53
10. DISPLAYED VALUES CALCULATION..................................................................................................53
10.1. ADDITIONAL CALCULATIONS (USED CONVERSION CHARACTERISTIC).............................53
10.1.1. Linear characteristic..............................................................................................................54
10.1.2. Square characteristic............................................................................................................54
10.1.3. Square root characteristic.....................................................................................................55
10.1.4. User defined characteristic...................................................................................................55
10.2. EXAMPLES OF CALCULATIONS.................................................................................................56
11. THE MODBUS PROTOCOL HANDLING...............................................................................................60
11.1. LIST OF REGISTERS....................................................................................................................60
11.2. TRANSMISSION ERRORS DESCRIPTION..................................................................................67
11.3. EXAMPLES OF QUERY/ANSWER FRAMES...............................................................................68
12. DEFAULT AND USER'S SETTINGS LIST.............................................................................................70
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User manual - CONTROLLER PUR-94
Explanation of symbols used in the manual:
!
- This symbol denotes especially important guidelines concerning the installation and
operation of the device. Not complying with the guidelines denoted by this symbol
may cause an accident, damage or equipment destruction.
IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS
RESPONSIBLE FOR POSSIBLE DAMAGES.
i
- This symbol denotes especially important characteristics of the unit.
Read any information regarding this symbol carefully
1. BASIC REQUIREMENTS AND USER SAFETY
!
- The manufacturer is not responsible for any damages caused by
inappropriate installation, not maintaining the proper environmental
conditions and using the unit contrary to its assignment.
- Installation should be conducted by qualified personnel . During installation all
available safety requirements should be considered. The fitter is responsible for
executing the installation according to this manual, local safety and EMC
regulations.
- If the device is equipped with PE connector, it should be connected to PE wire.
Otherwise PE wire should be connected to GND connector.
- The unit must be properly set-up, according to the application. Incorrect
configuration can cause defective operation, which can lead to unit damage or
an accident.
- If in the case of a unit malfunction there is a risk of a serious threat to the
safety of people or property additional, independent systems and
solutions to prevent such a threat must be used.
- The unit uses dangerous voltage that can cause a lethal accident. The unit
must be switched off and disconnected from the power supply prior to
starting installation of troubleshooting (in the case of malfunction).
- Neighbouring and connected equipment must meet the appropriate standards
and regulations concerning safety and be equipped with adequate overvoltage
and interference filters.
- Do not attempt to disassemble, repair or modify the unit yourself. The unit
has no user serviceable parts. Defective units must be disconnected and
submitted for repairs at an authorized service centre.
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User manual - CONTROLLER PUR-94
!
- In order to minimize fire or electric shock hazard, the unit must be protected
against atmospheric precipitation and excessive humidity.
- Do not use the unit in areas threatened with excessive shocks, vibrations, dust,
humidity, corrosive gasses and oils.
- Do not use the unit in areas where there is risk of explosions.
- Do not use the unit in areas with significant temperature variations, exposure to
condensation or ice.
- Do not use the unit in areas exposed to direct sunlight.
- Make sure that the ambient temperature (e.g. inside the control box) does not
exceed the recommended values. In such cases forced cooling of the unit must
be considered (e.g. by using a ventilator).
!
The unit is designed for operation in an industrial environment and must
not be used in a household environment or similar.
2. GENERAL CHARACTERISTICS
The PUR-94 device has a universal input that can be configured to work as: a current
input (in the range 0 - 20mA), as a voltage input (in the range 0-10V and 0-150 mV), as an
RTD input (operating with Pt 100/500/1000 sensors) and as a TC input (operating K, S, J, T, N,
R, B and E type thermocouples). The device automatically compensates the temperature of
cold junction of thermocouple sensor. RTD and TC inputs feature full linearization of
characteristics. Only one input type can be used at a time. The exact measurement ranges of
the inputs are quoted in the next chapter. The measurement is shown on a 4-digit LED display.
The device can be equipped with 1, 2 or 4 relay outputs and one OC-type output (not
available in the 4 relay output version), which can be controlled from the measuring inputs via
Modbus protocol or a PID controller implemented in the device with two control loops and an
auto-tuning option. Optionally, the device (in version with two relays and OC-type output) can
be equipped with: an active current output, a passive isolated current output or an active
voltage output. An RS-485 communication interface and a sensor transducer power supply
output are available as standard. The device is available in two power supply versions.
Exact description of functions is provided in further section of the instruction.
The PUR-94 is designed to regulate such processes as heating / cooling temperatures
with adjustable delay times for the operation of the output relays and controlling of valve levels.
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User manual - CONTROLLER PUR-94
3. TECHNICAL DATA
Power supply voltage
(depending on version)
External fuse (required)
Power consumption
85...230...260V AC/DC; 50 ÷ 60 Hz (separated)
or 19...24...50V DC and 16...24...35V AC (separated)
T - type, max. 2 A
max. 6.5 VA @ 85 ÷ 260V AC/DC
max. 6.5 VA @ 16V ÷ 35V AC
max. 6.5 W @ 19V ÷ 50V DC
Current input (20 mA)
0÷20 mA, 4÷20 mA overload protected,
input current is limited to 50 mA (typically)
Current measurement accuracy
± 0.1% @ 25°C; ± one digit (for 0÷20 mA range)
Current input resistance
< 65 Ω (typical 30 Ω)
Accepted prolonged input overload
20%
Voltage input (10V range)
0÷5 V, 1÷5 V, 0÷10 V, 2÷10 V
Voltage measurement accuracy
± 0.1% @ 25°C; ± one digit (for 0÷10 V range)
Voltage input resistance
> 100 kW (while maintaining correct polarization)
Accepted prolonged input overload
20%
Voltage input (150mV range)
0÷60 mV, 0÷75 mV, 0÷100 mV, 0÷150 mV
Voltage measurement accuracy
± 0.1% @ 25°C; ± one digit (for 0÷150 mV range)
Voltage input resistance
> 1,5 MΩ
Accepted prolonged input overload
20%
RTD input (resistive)
Pt 100, Pt 500,Pt 1000
Measurement range
-100°C ÷ +600°C
Measurement accuracy
± 0,1% @ 25°C; ± one digit
Measurement wires resistance
max. 20 Ω (every wire)
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User manual - CONTROLLER PUR-94
Thermocouple input
K, S, J, T, N, R, B, E
Thermocouple input range
K:
S:
J:
T:
N:
R:
B:
E:
Measurement accuracy
K, J, E: ± 0.1% @ 25°C; ± one digit
N: ± 0.2% @ 25°C; ± one digit
S, T, R, B: ± 0.5% @ 25°C; ± one digit
Accuracy of cold ends temperature
compensation
± 1˚C
Sensor power supply output
24V +5%, -10% / max. 100 mA, stabilized
Relay output
0, 1, 2 or 4 NO, 1A/250V AC (cos ϕ = 1)
OC-type output
0, 1, 2 or 4; 30mA / 30VDC / 100mW
Active current output
(optional, for two relays and one
OC-type output version only)
range max. 0 ÷ 24 mA
Load resistance max.
700 Ω
Passive isolated current output
(optional, for two relays and one
OC-type output version only)
range max. 2.8 ÷ 24 mA
Supply voltage
Us = 9.5 ÷ 36V
Load resistance max.
(Us – 9.5V) / 24mA [kΩ]
Active voltage output
(optional, for two relays and one
OC-type output version only)
range max. 0 ÷ 11V
Load resistance min.
2000 Ω
Temperature stability
50 ppm / °C
Display range
-999 ÷ 9999, plus decimal point
6
-200˚C ÷ +1370˚C
-50˚C ÷ +1768˚C
-210˚C ÷ +1200˚C
-200˚C ÷ + 400˚C
-200˚C ÷ +1300˚C
-50˚C ÷ +1768˚C
+250˚C ÷ +1820˚C
-200˚C ÷ +1000˚C
User manual - CONTROLLER PUR-94
Communication interface
RS-485, 8N1 and 8N2, Modbus RTU, not separated
Baud rate
1200 bit/s ÷ 115200 bit/s
Display
(depending on version)
LED, 4 digit, 20mm height, red or
LED, 4 digit, 20mm height, green
Data memory
non-volatile memory, EEPROM type
Front panel protection
IP 65
optional version with panel cut-out sealing available
Terminals protection
IP 20
Housing type
Housing material
Housing dimensions
Mounting hole
Assembly depth
Panel thickness
panel
NORYL - GFN2S E1
96 x 48 x 100 mm
90.5 x 43 mm
102 mm
max. 5 mm
Operating temperature
(depending on version)
0°C to +50°C
or -20°C to +50°C
Storage temperature
(depending on version)
-10°C to +70°C
or -20°C to +70°C
Humidity
Altitude
5 to 90% no condensation
up to 2000 meters above sea level
Screws tightening max. torque
0,5 Nm
Max. connection leads cross section 2,5 mm2
Safety requirements
according to: PN-EN 61010-1
installation category: II
pollution degree: 2
voltage in relation to ground: 300V AC
insulation resistance: >20MΩ
insulation strength between power supply and
input/output terminal: 1min. @ 2300V
insulation strength between relays terminal:
1min. @ 1350V
EMC
!
according to: PN-EN 61326-1
This is a class A unit. In a residential or a similar area it can cause radio
frequency interference. In such cases the user can be requested to use
appropriate preventive measures.
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User manual - CONTROLLER PUR-94
4. DEVICE INSTALLATION
The unit has been designed and manufactured in a way assuring a high level of user
safety and resistance to interference occurring in a typical industrial environment. In order to
take full advantage of these characteristics installation of the unit must be conducted correctly
and according to the local regulations.
!
- Read the basic safety requirements on page 3 prior to starting the installation.
- Ensure that the power supply network voltage corresponds to the nominal
voltage stated on the unit’s identification label.
- The load must correspond to the requirements listed in the technical data.
- All installation works must be conducted with a disconnected power supply.
- Protecting the power supply connections against unauthorized persons must be
taken into consideration.
4.1. UNPACKING
After removing the unit from the protective packaging, check for transportation damage. Any
transportation damage must be immediately reported to the carrier. Also, write down the unit
serial number located on the housing and report the damage to the manufacturer.
Attached with the unit please find:
- user’s manual,
- warranty,
- assembly brackets - 2 pieces.
4.2. ASSEMBLY
!
- The unit is designed for mounting inside housings (control panel, switchboard)
insuring appropriate protection against surges and interference. Metal housings
must be connected to ground in a way that complies with the governing
regulations.
- Disconnect the power supply prior to starting assembly.
- Check the connections are wired correctly prior to switching the unit on.
!
8
In order to install the unit, a 90.5 x 43 mm mounting hole (Figure 4.1, 4.2) must be
prepared. The thickness of the material of which the panel is made must not exceed
5mm. When preparing the mounting hole take the grooves for catches located on
both sides of the housing into consideration (Figure 4.1, 4.2). Place the unit in the
mounting hole inserting it from the front side of the panel, and then fix it using the
brackets (Figure 4.3). The minimum distances between the centre points of multiple
units - due to the thermal and mechanical conditions of operation - are 115 mm x
67mm (Figure 4.4).
User manual - CONTROLLER PUR-94
90,5 mm
13 mm
43 mm
8 mm
8 mm
13 mm
1 mm
max. 5 mm
1 mm
Figure 4.1. Recommended mounting hole dimensions
43 mm
92 mm
max. 5 mm
Figure 4.2. Allowable mounting hole dimensions
8,5 mm
5 mm
16 mm
92 mm
12 mm
10 mm
Figure 4.3. Installing of brackets, and dimensions of connectors.
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User manual - CONTROLLER PUR-94
67 mm
115 mm
Figure 4.4. Minimum distances when assembly of a number of units
4.3. CONNECTION METHOD
Caution
!
- Installation should be conducted by qualified personnel . During installation all
available safety requirements should be considered. The fitter is responsible for
executing the installation according to this manual, local safety and EMC
regulations.
- The unit is not equipped with an internal fuse or power supply circuit breaker.
Because of this an external time-delay cut-out fuse with a small nominal current
value must be used (recommended bipolar, max. 2A) and a power supply circuitbreaker located near the unit. In the case of using a monopolar fuse it must be
mounted on the phase cable (L).
- The power supply network cable diameter must be selected in such a way that in
the case of a short circuit of the cable from the side of the unit the cable shall be
protected against destruction with an electrical installation fuse.
- Wiring must meet appropriate standards and local regulations and laws.
- In order to secure against accidental short circuit the connection cables must be
terminated with appropriate insulated cable tips.
- Tighten the clamping screws. The recommended tightening torque is 0.5 Nm.
Loose screws can cause fire or defective operation. Over tightening can lead to
damaging the connections inside the units and breaking the thread.
- In the case of the unit being fitted with separable clamps they should be inserted
into appropriate connectors in the unit, even if they are not used for any
connections.
- Unused terminals (marked as n.c.) must not be used for connecting any
connecting cables (e.g. as bridges), because this can cause damage to the
equipment or electric shock.
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User manual - CONTROLLER PUR-94
!
- If the unit is equipped with housing, covers and sealing to, protecting against
water intrusion, pay special attention to their correct tightening or clamping. In the
case of any doubt consider using additional preventive measures (covers, roofing,
seals, etc.). Carelessly executed assembly can increase the risk of electric shock.
- After the installation is completed do not touch the unit’s connections when it is
switched on, because it carries the risk of electrical shock.
Due to possible significant interference in industrial installations appropriate measures
assuring correct operation of the unit must be applied. To avoid the unit of improper
indications keep recommendations listed below.
–
Avoid running signal cables and transmission cables together with power supply cables
and cables controlling inductive loads (e.g. contactors). Such cables should cross at
a right angle.
–
Contactor coils and inductive loads should be equipped with interference protection
systems, e.g. RC-type.
–
Use of screened signal cables is recommended. Signal cable screens should be
connected to the earthing only at one of the ends of the screened cable.
–
In the case of magnetically induced interference the use of twisted pair of signal cables is
recommended. Twisted pair (best if shielded) must be used with RS-485 serial
transmission connections.
–
In the case of measurement or control signals are longer than 30m or go outside of the
building then additional safety circuits are required.
–
In the case of interference from the power supply side the use of appropriate interference
filters is recommended. Bear in mind that the connection between the filter and the unit
should be as short as possible and the metal housing of the filter must be connected to
the earth with the largest possible surface. The cables connected to the filter output must
not be run with cables with interference (e.g. circuits controlling relays or contactors).
max. 2 mm
Connections of power supply voltage and measurement signals are executed using the
screw connections on the back of the unit’s housing.
6-7 mm
Figure 4.5. Method of cable insulation replacing and cable terminals
!
All connections must be made while power supply is disconnected !
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User manual - CONTROLLER PUR-94
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
Power
supply
(depending on version)
1
2
+ Uo -
n.c. n.c.
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
n.c. n.c.
31
R1
+
34
+
mV
31
V
R2
34
-
+
(optional) (optional)
RTD
RTD
mA
TC
Figure 4.6. Terminals description (two relay outputs)
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
Power
supply
(depending on version)
+ Uo -
n.c. n.c.
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
1
2
+
OC2
n.c. n.c.
31
+
34
+
mV
V
31
34
(optional)
R1
-
+
(optional)
RTD
RTD
mA
TC
OC2: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
Figure 4.7. Terminals description (one relay and one OC-type outputs)
Power
supply
R4
(optional)
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
+ Uo -
(depending on version)
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
1
2
31
R1
R2
34
+
+
mV
V
R3
(optional) (optional) (optional)
31
-
+
RTD
RTD
mA
Figure 4.8. Terminals description (four relay outputs)
12
34
TC
User manual - CONTROLLER PUR-94
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
Power
supply
(depending on version)
1
+ Uo -
n.c. n.c.
2
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
+
OC3
31
+
34
+
mV
V
31
34
(optional)
R1
R2
-
+
(optional) (optional)
RTD
RTD
mA
TC
OC3: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
Figure 4.9. Terminals description (two relay and one OC-type outputs)
Power
supply
ACTIVE
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
(depending on version) current output
- + (optional)
1
2
+ Uo -
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
+
OC3
31
34
+
+
mV
V
31
34
(optional)
R1
R2
(optional) (optional)
-
+
RTD
RTD
mA
TC
OC3: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
Figure 4.10. Terminals description (two relay, one OC-type and one active current outputs)
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User manual - CONTROLLER PUR-94
Power
supply
(depending on version)
Passive, isolated
Current output
4÷20mA
(optional)
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
+ Uo -
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
1
2
+
OC3
31
+
34
+
mV
V
31
34
(optional)
R1
R2
-
+
(optional) (optional)
RTD
RTD
mA
TC
OC3: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
Figure 4.11. Terminals description (two relay, one OC-type and one passive current outputs)
Power
supply
ACTIVE
+24V +5%, -10% RS - 485
Imax = 100mA GND
DATA+
(depending on version) voltage output
- +
(optional)
+ Uo -
DATA-
3 4
5 6 7 8 9
10 11 12 13 14 15
31 32 33 34 35
1
2
+
OC3
31
34
+
+
mV
V
31
34
(optional)
R1
R2
(optional) (optional)
-
+
RTD
RTD
mA
TC
OC3: Umax = 30V DC,
Imax = 30mA, Pmax = 100mW
Figure 4.12. Terminals description (two relay, one OC-type and one active voltage outputs)
internally connected
24V DC
+ -
5 6
-
+
31 32 33 34 35
Figure 4.13. Connection of 2-wire current transducer
14
-
31 32 33 34 35
-
+
+
User manual - CONTROLLER PUR-94
+ -
internally connected
24V DC
5 6
31 32 33 34 35
-
-
-
+
+
+
31 32 33 34 35
Figure 4.14. Connection of 3-wire current transducer
+ -
internally connected
24V DC
5 6
-
-
+
+
+
31 32 33 34 35
-
+
31 32 33 34 35
+
Figure 4.15. Connection of voltage transducer
Temperature sensor can be connected to the device in typical 4-wire circuit (Figure 4.16a) or
3-wire circuit (Figure 4.16b). Due to precision of measurement 4-wire circuit is recommended.
i
If 2 wire circuit is used, the resistance of wires should be as small as possible, to
avoid of measurement errors. Measured value can be corrected (constant
correction) using „toFS” parameter from menu „inPt”. Due to low precision 2-wire
connection is not recommended.
When 4-wires or 2-wires connection is used, the resistance of particular wires
(Ra ÷ Rd) CAN BE DIFFERENT. When 3-wires connection is used, the resistance of particular
wires (Ra ÷ Rd) MUST BE IDENTICAL to enable proper compensation of it's resistance. The
resistance of particular wire should not be greater than 20 Ω .
15
User manual - CONTROLLER PUR-94
a)
b)
31 32 33 34
c)
31 32 33 34
31 32 33 34
n.c.
Ra
Rb
Rc
Ra
Rd
n.c. n.c.
Rc
RTD
Rd
Ra
RTD
Ra, Rb, Rc, Rd can be different
Rc
RTD
Ra, Rc can be different
Ra = Rc = Rd
Figure 4.16. Connection of RTD sensors:
a) 4-wires circuit; b) 3-wires circuit; c) 2-wires circuit
i
The connection circuit should not be changed while unit is powered. While using
TC, RTD or voltage inputs (0-150mV) the device is able to detect wire breaks. Wire
breaks are detected within about 2 seconds. For connectors number 32 and 33 of
RTD input it may take up to about 7 seconds. During detection measurements will
be incorrect. If wire break is detected "S.Err" (sensor error) message is displayed.
R4
L
N
1
2
R1
R2
R3
3 4
10 11 12 13 14 15
FUSE
FUSE
Depending on version:
85...230...260V AC/DC or
19...24...50V DC; 16...24...35V AC
L
N
Figure 4.17. Connection of power supply and relays
!
16
Contacts of relay outputs are not equipped with spark suppressors. While use
the relay outputs for switching of inductive loads (coils, contactors, power
relays, electromagnets, motors etc.) it is required
to use additional
suppression circuit (typically capacitor 47nF/ min. 250VAC in series with
100R/5W resistor), connected in parallel to relay terminals or (better) directly
on the load. In consequence of using the suppression circuit, the level of
generated electromagnetic disturbances is lower, and the life of relay contacts
rises.
User manual - CONTROLLER PUR-94
a)
b)
L
L
10 11
!
10 11
!
N
N
Figure 4.18. Examples of suppression circuit connection:
a) to relay terminals; b) to the inductive load
OC2
Uo
12 13
5 6
+
-
+
Logic controller
+
-
-
OC2
Uo
12 13
5 6
+
LED 10 mA
+
-
R
2k2
voltage input
24 V
Figure 4.19. Example of OC-type outputs connection
(for device with OC-type output only)
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User manual - CONTROLLER PUR-94
ACTIVE
current output
-
+
3 4
Logic controller
+
-
current input
0-20 mA
Figure 4.20. Example of active current outputs connection
(for device with active current output only)
PASSIVE
current output
Uo
3 4
5 6
+
-
Logic controller
-
+
current input
4-20 mA
!
Isolation loss
Figure 4.21. Example of passive current outputs connection
(for device with passive current output only)
ACTIVE
voltage output
-
+
3 4
Logic controller
+
voltage input
0 - 10V
Figure 4.22. Example of active voltage outputs connection
(for device with active voltage output only)
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User manual - CONTROLLER PUR-94
4.4. MAINTENANCE
The unit does not have any internal replaceable or adjustable components available to
the user. Pay attention to the ambient temperature in the room where the unit is operating.
Excessively high temperatures cause faster ageing of the internal components and shorten the
fault-free time of the unit's operation.
In cases where the unit gets dirty do not clean with solvents. For cleaning use warm water with
small amount of detergent or in the case of more significant contamination ethyl or isopropyl
alcohol.
!
Using any other agents can cause permanent damage to the housing.
Product marked with this symbol should not be placed in municipal waste. Please
check local regulations for disposal of electronic products.
5. FRONT PANEL DESCRIPTION
display
alarm LED indicator (AL)
Thresholds exceeding
LED indicators (R)
AL
R1
R2
R3
R4
ESC
MENU
ENTER
programming
pushbuttons
Symbols and functions of push-buttons:
ESC
MENU
ENTER
Symbol used in the manual: [ESC/MENU]
Functions:
• Enter to main menu ( press and hold by at least 2 sec.)
• Exit the current level and Enter to previous menu (or measure mode)
• Cancel the changes made in parameter being edited
Symbol used in the manual: [ENTER]
Functions:
• Start to edit the parameter
• Enter to the sub-menu,
• Confirmation of changes made in parameter being edited
Symbol used in the manual: [^] [v]
Functions:
• Change of the present menu,
• Modification of the parameter value,
• Change of the display mode.
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User manual - CONTROLLER PUR-94
6. PRINCIPLE OF OPERATION
After turning the power supply on, device ID and software version are showed on the
display, next the controller goes to the measurement mode.
6.1. MEASUREMENT MODE
In the measure mode, the measurement results, converted over selected characteristic,
are displayed on the LED display. The measurement range equal to the nominal range is
called: nominal measurement range, and the measurement range equal to the extended
nominal range is called: permissible measurement range (Figure 6.1, 6.2).
i
For temperature inputs (TC and RTD) there is linear characteristic available only.
For this kind of inputs nominal measurement range, and permissible
measurement range are the same (no range extension available, Figure 6.3).
”Lo r” parameter
”Hi r” parameter
nominal measurement range
4 mA
20 mA
permissible measurement range
Figure 6.1. Definitions of measurement ranges in mode 4 ÷ 20mA
If the result of measurement exceeds the permissible measurement range, warning
”-Hi-” or ”-Lo-” is displayed rather than input signal, depending on exceeded value (see
description of “Lo r” and “Hi r” parameters, paragraph ”inPt” menu). The warning can be
effect of measurement circuit malfunction. In that case “-Lo-” means shortcut and “-Hi-”
means break of measurement circuit. If sensor failure will be detected (e.g. broken wires), then
”S.Err” warning will be displayed.
”Hi r” parameter
nominal measurement range
0 mV
150 mV
permissible measurement range
Figure 6.2. Definitions of measurement ranges in mode 0 ÷ 150mV
i
20
If the measurement value do not exceeds permissible measurement range but
displayed value exceeds range -999 ÷ 9999, the warning ”-Ov-” is displayed rather
than the calculated result.
User manual - CONTROLLER PUR-94
-100°C
permissible measurement range
+600°C
”-Lo-” message
displayed
”-Hi-” message
displayed
Figure 6.3. Definitions of measurement ranges in mode Pt100
In the measurement mode and PID mode user can check main thresholds values. After
pressing [^] or [v] button, name of the threshold (e.g. ”rEL1”) and his value will be displayed
on the display in alternating mode. If [^] or [v] will be pressed in 5 sec again, the next
threshold will be displayed, else the device comes back to the measurement mode. If a free
access is enabled (see description of ”SECu” menu), user can change the value of particular
threshold pressing button [ENTER] (see: PARAMETERS EDITION).
All accessible parameters can be changed by entering the menu (see: DEVICE
PROGRAMMING). Use the local keyboard or the remote controller to do it. (Note: all
parameters can be remote changed via RS-485 interface).
i
Configuration of
measures.
the device
(via menu or RS-485 interface) does not stop
6.1.1. detection OF THE PEAK VALUES
The PUR-94 controller is equipped with peaks detection function. It can detect a peaks of
the input signal and display their values. Presets connected with this function are placed in
”HOLd” menu (see description of ”HOLd” menu). The detection of the peak can be done if
the measured signal raises and drops of value at least equal to parameter ”PEA”. Detected
peaks are displayed during the time defined by parameter ”timE”. If a new peak will be
detected while one is displayed, this new peak will be displayed and display time counter will
be cleared (Figure 6.4).
If no peaks are detected while time ”timE” elapses, device starts to show the current
value of input signal again. If „HdiS”=”HOLD” then setting parameter "timE"=0.0 causes
holding peak value until [ESC] button is pressed. If „HdiS”=”rEAL” then value "timE"=0.0
means no holding. Displaying peak value is signalized by flashing most right decimal point.
The relays/LEDs can be controlled depend on the current value of input signal or the
peak value (see ”HOLd” menu).
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User manual - CONTROLLER PUR-94
measure
”timE”
”timE”
”PEA”
”PEA”
real measurement result
display value
time
Figure 6.4. Process of peaks detection
6.2. PID REGULATORS
Operation of the PID controller involves calculating the error value ensuing from the
difference between the setpoint and the measured value and responding in such a way as to
minimize the calculated error by appropriately adjusting the signal connected to the input of
the regulated object.
Controllers are mainly used in industrial control systems that have large time constants
vulnerable to interference from the input of the regulated object, and therefore are suitable for
constant value regulating of the object or technological processes that contain such elements
as furnaces, boilers, etc.
The PUR-94 device includes a proportional-integral-derivative (PID) controller with two
independent control loops, one for controlling the heating process and the second for the
cooling system (a general diagram of the controller is shown in Figure 6.5). Hereafter these
loops are called PID H loop and PID C loop respectively, as shown in Figure 6.5. Each of
these loops is composed of the following blocks: P proportional, I integral and D derivative,
whose proper summing up gives the output signal controlling the object Figure 6.6.
The controller’s signal may be redirected to any output of the device, which means that
the PUR-94 may be used to control most objects used in the industry.
The PID controller can be used to adjust such values as temperature, humidity, pressure,
force, speed, flow rate, or level of a liquid or loose material etc. Note, however, that the
controllers included in the device have a common setpoint (SEtP parameter), and so should
be used in applications where one of the controllers (e.g. PID H) is used to control actuators
that increase the state of the regulated object (e.g. heating), and the other controller (e.g. PID
C) is used to control actuators reducing the state of the regulated object (e.g. cooling).
Additional controller parameters such as: dead zone, fuzzy logic block or inertial block,
enables even more precise control over the physical object, optimizing, but also protecting the
object against over-regulation or an excessive rise of the control value.
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User manual - CONTROLLER PUR-94
Setpoint
SEtP
FuZL
Fuzzy logic block
Modbus
Master
Sour
Fuzzy
setpoint
Out.: rELx/OCx
modE
PID H
OSou
Controlled
object
Analogue
output
Omod
PID C
Measurement
input
Feedback
inPt
Figure 6.5. The general structure of the PUR-94 device
Offset
OF-H
OF-C
1
Setpoint
SEtP
or
Fuzzy
setpoint
Feedback
Dead zone
Proportional
block
Integral
block
dEAd
P -H
P -C
tI-H
tI-C
Err
LooP
Derivative
block
Inertial
block
td-H
td-C
InEr
Upper limit
Hi-H
Hi-C
Output
limits
Lower limit
Lo-H
Lo-C
Figure 6.6. General scheme of the PID controller implemented in the PUR-94 device
Configuring the PID controller
The PID controller can be configured in two ways: manually and automatically.
In manual mode, the user defines all factors and additional elements of the controllers
(fuzzy logic, inertia, output limiting and dead zone) at their own discretion. The settings chosen
by the device in automatic mode can also be improved and fine-tuned. The user can disable
each block of the PID controller as well as additional blocks. This is done by setting the zero
value or OFF option in the selected parameter.
In automatic mode, in the auto-tuning process using the Ziegler-Nichols method, the
device calculates and tunes the parameters P, I and D of one of the controller’s loops.
Additional blocks (fuzzy logic, inertia, output limiting and dead zone) are not configured in this
mode and the user must choose them himself according to respective applications. The autotuning process is described later in this chapter.
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User manual - CONTROLLER PUR-94
Fuzzy logic block (FuZL submenu)
Step changes in the setpoint can be mitigated by the use of the fuzzy logic block, which
inserts speed control of the setpoint change. Thanks to its application the user may dictate
how quickly a fuzzy value approximates the target value in the process (SEtP).
This feature is particularly useful in systems where too rapid change in the setpoint and,
as it is possible in such a situation, the control signal, could lead to unwanted behaviour on the
part of a object, for instance destruction of the product being manufactured. It is also possible
to set the minimum difference between the setpoint (SEtP), and the fuzzy setpoint, beyond
which the controller step changes the fuzzy setpoint to the setpoint (SEtP). This is defined by
the HYST parameter. Both controllers use the same settings of the fuzzy logic block.
PID-H controll loop
120
setpoint
100
Histeresis
80
60
FuZL on
40
FuZL off
20
0
0
20
40
60
80
100
120
140
160
180
200
time
Figure 6.7. Comparison of the PID-H controller’s response to a change in the setpoint using
and without the use of fuzzy logic
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User manual - CONTROLLER PUR-94
PID-C controll loop
160
140
setpoint
120
FuZL on
100
FuZL off
80
60
40
Histeresis
20
0
0
20
40
60
80
100
120
140
160
180
200
time
Figure 6.8. Comparison of the PID-C controller’s response to a change in the setpoint using
and without the use of fuzzy logic
The inertial block
This is used to smooth the progress of the derivative block response, in other words to
eliminate overly dynamic changes in the output signal’s value caused by the presence of
measurement process noise. The use of the inertial block lengthens response time, but
provides protection against over-regulation that could lead to failures in the controlled system.
Dead zone
The insertion of this parameter provides the possibility of "anesthetising" the control
system to small deviations in the measured value from the setpoint. The dEAd parameter
specifies the minimum deviations to which the controller should react. The use of the dead
zone is justified in systems for which oscillation around the setpoint is a natural behaviour.
Auto-tuning
If the user does not know the dynamic parameters of the controlled system, and is unable
to select the suitable controller coefficients or simply doesn’t have the time or patience, the
controller auto-tuning system included in the device can be used instead.
Thanks to auto-tuning, the controlled system is identified and controller settings are
selected using the Ziegler-Nichols method, which involves measuring the set oscillation
parameters of the system. The auto-tuning process is divided into three phases, during which
no device settings can be changed, and after their completion the device automatically
switches to operation in the Pid mode. The duration of the auto-tuning process depends on the
properties of the controlled system.
!
During auto-tuning, the user is warned against regulating the actual technological
processes, because auto-tuning may damage the products manufactured in the
process.
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User manual - CONTROLLER PUR-94
There are 3 auto-tuning modes available, as a result of which the settings of one of the
controllers will be selected:
The At-F mode:
Auto-tuning using both the controller’s control loops (At-F mode), during which two
outputs of the device are controlled by two controller loops. In this process, the device
determines (based on the setpoint and the measured value), which loop is to be tuned. The
second loop receives the same settings. When the setpoint is greater than the measured
value, the PID-H controller’s loop will be tuned, and when the setpoint is less than the
measured value, the PID-C controller’s loop will be tuned.
The process of auto-tuning in this mode may commence subject to the following
conditions:
1) The value measured by the device must be greater than six fifths of the setpoint (when
the PID-H controller is tuned) or the value measured by the device must be greater than
six fifths of the setpoint (when the PID-C controller will be tuned)
2) The source of at least one of the device’s outputs must be PidH if the loop of the
PID-H controller will be tuned, or the source of at least one of the outputs must be PidC,
if the loop of the PID-C controller will be tuned. In addition, these outputs can not be set
in the noAC mode.
The At-H mode:
Auto-tuning of the PID-H loop (the At-H mode), during which the device uses and adjusts
only that loop. The second loop remains idle and its setting will not change following the
process.
The process of auto-tuning in this mode may commence subject to the following conditions:
1) The value measured by the device must be less than four-fifths of the setpoint,
2) The source of at least one of the device’s outputs must be Pid-H. Additionally, those
outputs cannot be set in the noAC mode.
The At-C mode:
Auto-tuning of the PID-C loop (the At-C mode), during which the device uses and adjusts
only that loop. The second loop remains idle and its setting will not change following the
process.
The process of auto-tuning in this mode may commence subject to the following conditions:
1) The value measured by the device must be greater than six fifths of the setpoint
2) The source of at least one of the device’s outputs must be PID-C. Additionally, those
outputs cannot be set in the noAC mode.
Auto-tuning that is already underway is a very sensitive process. So the user should pay
attention to events that could interrupt the tuning of the settings. These events include:
1) Loss of power to the device.
2) Time for auto-tuning exceeded (24 h).
3) When the PID controller’s operating mode is switched over.
4) Measurement error (e.g. sensor failure).
5) Change in the parameters of the device.
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User manual - CONTROLLER PUR-94
6.3. CONTROL OF THE RELAY OUTPUTS
The control of the object (measured signal) is realized via relay outputs. Front panel
LEDs named “R” indicates the state of particular relay output.
i
If device is not equipped with one or more relay outputs, menus refer to this relays
are available, but apply to LED indicators only. In such case LEDs indicates
exceeding of particular thresholds.
Modes of the control can be changed depend on the values of parameters “SEtP”,
“SEt2”, “HYSt”, “modE”, “t on”, “toFF”, “unit” and “AL”. Depend on “modE” parameter,
relays can be not used or controlled over one or two thresholds values.
If one threshold is used (Figure 6.9) the relay can be turned on (“modE” = ”on”) or off
(“modE” = ”oFF”) when the input signal value is contained in zone A. If two thresholds are
used (Figure 6.10) the relay will be turned on when value of input signal is contained in zone
A (“modE” = ”in”) or zone B (“modE” = ”out”) and turned off if the signal is contained in
the second one.
state of
relay/LED
”SEtP” parameter
zone B
zone A
measure
”HYSt” parameter
Figure 6.9. One threshold control of the relay/LED outputs
state of
relay/LED
”SEtP” or ”SEt2” parameter
zone B
zone A
zone B
measure
”HYSt” parameter
Figure 6.10. Two threshold control of the relay/LED outputs
i
The relay outputs and LEDs (named R) can be controlled depend on both - the
current value and the peak value (when peak detection is active) of the input signal.
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User manual - CONTROLLER PUR-94
6.3.1. One threshold mode
Figure 6.11 presents the principle of relay outputs operation for one threshold mode, and
an example values of other parameters.
displayed value
a)
zone A
tB
tA
B
A
tC
c)
d)
e)
relay state
(modE = on
t on = 0
toFF = 0)
relay state
(modE = oFF
t on = 0
toFF = 0)
relay state
(modE = on
t on > 0
toFF > 0)
relay state
(modE = oFF
t on > 0
toFF > 0)
“SEtP” parameter
(expected signal value)
tD
BOFF B
ON
C
zone B
b)
measured
signal
D
DOFF
DON
“HYSt” parameter
(allowed signal
deviation)
time
closed
open
time
closed
open
time
closed
open
time
closed
“t on”
parameter
“toFF”
parameter
open
time
“toFF”
parameter
“t on”
parameter
Description:
A, B, C, D
- points where measured signal exceeds border values (expected value ± allowed deviation)
BON ,BOFF ,DON ,DOFF - relays state changes moments: (for “t on” > 0, “toFF” > 0)
tA , tB , tC , tD
- time periods while input signal is in zone A or zone B
Figure 6.11. Principle of LED/relay output operation for one threshold mode
Parameter “SEtP” sets a threshold of the relay, and parameter “HYSt” sets a
hysteresis of the relay (Figure 6.11 a). The relay can change his state only when input value
exceeds (over or under) border value and tA ,tB ,tC ,tD times (Figure 6.11) are bigger than the
time defined by parameters “t on”, “toFF” and “unit”. Border values means values equal
threshold+hysteresis and threshold-hysteresis respectively.
If “t on” and “toFF” parameters are set to “0”, then the relay state will be changed
as soon as input value exceeds any of the border values (see points A and C, Figure 6.11 a,
b, c).
If values of “t on” or/and “toFF” are positive, then relay state will be turned on if the
input value exceeds the border values and stay bigger (or lower) during at least
“t on” (see points BON, DON, Figure 6.11 a, d, e). Similarly, the relay will be turned off if time
“toFF” elapse since the input signal value exceeds any of the border values (see points
BOFF, DOFF, Figure 6.11 a, d, e).
If tA ,tB ,tC or tD (when input signal stay in zone A or zone B) are lower than parameters
“t on” or “toFF”, the relay will not change his state (see points A and C, Figure 6.11 a, d, e).
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User manual - CONTROLLER PUR-94
The state of relay output while the input value exceeds the border values (points A, B, C,
D) is described by parameter “modE”. The relay can be turned on (“modE” = ”on”), or
turned off (“modE” = ”oFF”) when input signal value is contained in zone A (Figure 6.11 a).
The parameter “AL” allow user to set the relay output behaviour in critical situations
(e. g. input values exceeds permissible measurement range). User can select that the
relays will be turned on, turned off,or not changed in critical situations.
All parameters connected with relay outputs are described in paragraph ”rEL1” menu.
6.3.2. Two thresholds mode
displayed value
tA
tB
tC
COFF CON
zone B
tE
tD
measure
d signal
“HYSt” parameter
C
BON
BOFF
a)
zone A
A
D
E
B
EOFF
EON
“SEtP” or “SEt2”
parameter
“HYSt” parameter
zone B
b)
c)
d)
e)
relay state
(modE = in
t on = 0
toFF = 0)
relay state
(modE = out
t on = 0
toFF = 0)
time
closed
time
closed
open
time
relay state
(modE = in
t on > 0
toFF > 0)
relay state
(modE = out
t on > 0
toFF > 0)
open
closed
open
time
“toFF” parameter
“t on” parameter
open
“t on” parameter
closed
time
“toFF” parameter
“t on” parameter
“toFF” parameter
Objaśnienie:
A, B, C, D, E
- points where measured signal exceeds border values (expected value ± allowed deviation)
BON ,BOFF ,CON ,COFF ,EON ,EOFF
- relays state changes moments: (for “t on” > 0, “toFF” > 0)
tA , tB , tC , tD , tE
- time periods while input signal is in zone A or zone B
Figure 6.12. Principle of LED/relay output operation for two thresholds mode
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User manual - CONTROLLER PUR-94
Figure 6.12 presents the principle of relay outputs operation for two thresholds mode,
and an example values of other parameters. In this mode parameter “SEt2” is accessible in
common with “SEtP”, this parameter describes a second threshold of the relay output. The
parameters “HYSt”, “modE”, “t on”, “toFF”, “unit” and “AL” are connected with both
“SEtP” and “SEt2” thresholds. While the controlling process, the relay output changes his
state depends of both “SEtP” and “SEt2” thresholds in similar way as it was described in one
threshold mode.
If two threshold mode is used, “modE” parameter defines state of the relay output when
the input value occurs in a particular zone defined by border values of both thresholds. The
relay can be turned on if the input value is contained in zone A (“modE” = ”in”) or zone B
(“modE” = ”out”) and turned off if it is contained in the second one (Figure 6.12).
i
The sequence of thresholds “SEtP” and “SEt2” can be set in any order, due to the
control of relay outputs is done depend on difference between thresholds values
(zone A ) and outside of threshold values (zone B).
6.3.3. PWM Controlling
In devices equipped with the OC type output, the user can switch this output to the
special “PULS” mode. This mode allows the user to adjust the output pulse width (Pulse
Width Modulation or ) by means of a source signal defined in the parameter “Sour” and the
parameter settings “InLo”, “InHi”, “PEri”, “H on”, “HoFF” and “AL” (for the exact
description of these parameters, see chapter 7.3.1. “rEL1” menu).
PWM allows the user to change the width (duration) of high and low levels by defining the
range of the input signal (in "InLo" and "INHi" parameters), the duration of this signal ( "PEri"
parameter) and the source value (“Sour” parameter). The input signal, changing within this
range, will linearly vary the percentage share of the high status over the entire period of the
signal in accordance with fill factor D. In those cases where the source value is less than the
value of the "InLo" parameter, the fill is equal to 0% (i.e. the output signal will always in low
level state), and when the source value is greater than the value of the "INHi" parameter the
fill will be equal to 100% (i.e. the output signal will always in high level state).
Factor D is defined by the following formula:
D=
t
T
where:
t – the duration of the high status for a single pulse,
Τ – the duration of the signal.
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User manual - CONTROLLER PUR-94
D
1
0,8
0,6
0,4
0,2
0
0
2
4
6
“InLo”
parameter
8
10
12
14
16
“Sour”
parameter
“InHi”
parameter
Figure 6.13. Example characteristics of an input - output signal in the "PULS" mode for
parameters: “InLo” = 4, “InHi” = 14
There is also a possibility of protecting the signal from too high or too low fill factor, by
inserting the parameters "H on" and "HoFF". These specify the minimum duration of the high
signal and low signal respectively. When setting the output status, the parameters "H on" and
"HoFF" have a higher priority than the fill factor.
i
It should be noted that the sum of the values of the parameters "H on" and "HoFF"
does not exceed the value of the parameter "Peri", since this will cause the OC output
to move to a low status.
The "AL" parameter specifies the permanent fill (as a percentage) that is to be forced on
the output at the time of an alarm, regardless of the state of the source value.
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User manual - CONTROLLER PUR-94
Minimal
on and off
time
D= 50%
Output
state
1
0
0
10
20
30
40
50
60
70
80
90
100
Time [s]
PEri = 200
Figure 6.14. An example of the progress of an OC type PWM output signal in PULS mode
7. DEVICE PROGRAMMING
The device menu allow user to set all parameters connected to operation of
measurement input, control modes, critical situations behaviour, communication via RS-485
and access settings. The meaning of the particular parameters is described in paragraph
MENU DESCRIPTION.
Some of the parameters can be accessed without menu entering (quick view mode).
After pressing [^] or [v] button, name of the threshold (e.g.”rEL1”) and his value will be
displayed on the display in alternating mode. If [^] or [v] will be pressed in 5 sec again, the
next threshold will be displayed, else the device comes back to the measurement mode. If a
free access is enabled (see description of ”SECu” menu), user can change the value of
particular threshold pressing button [ENTER] (see: PARAMETERS EDITION).
i
If particular parameter has been changed and confirmed in quick view mode, its
new value is displayed in alternating mode with parameter name by few seconds.
Confirmed changes may be checked or user can switch viewed parameter pressing
[^] or [v] button.
7.1. PROGRAMMING MENU
To enter main menu (being in the measurement mode) operator must to press and hold
at least 2 sec. [ESC/MENU] button.
If the user password is defined (see parameter “Scod“, menu “SECU”), operator have
to enter correct one before proceeding to menu options . Entering of the passwords is similar
to the edition of numeric parameters (see: PARAMETERS EDITION ), however presently editing
digit is showed only on the display, other digits are replaced by “-” sign.
After entering of last digit of the password first menu position will be displayed (if the
password is correct) or warning “Err” in other case.
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User manual - CONTROLLER PUR-94
!
Pay attention when device parameters are being changed. If it is possible, turn off
controlled installation (machine).
Functions of the buttons while sub-menu and parameters choice:
Selection of sub-menu or parameter for editing. Name of selected item (submenu or parameter) is displayed.
ENTER
Operation of [ENTER] button depend on present menu position:
• if the name of some sub-menu is displayed - enter this sub-menu; name
of the first parameter (or next level sub-menu) is displayed,
• if the name of some parameter is displayed - enter the edition of this
parameter; present value of the parameter is displayed,
MENU
[ESC/MENU] button allow user to exit present menu level and goes to upper
level menu (or measurement mode).
i
After about 1 min. since last use of the buttons, device exits the menu mode and
returns to the measurement mode (only if no parameters are in editing mode).
ESC
7.2. PARAMETERS EDITION
To start edition of any parameter user should select name of desired one using [^] [v]
buttons and then press [ENTER].
7.2.1. Numeric parameters (digit change mode)
Numerical parameters are displayed as decimal numbers. The mode of its new value
entering depends on chosen edit method ( see parameter „Edit”).
In mode “by digit” (“Edit”=”dig”) pressing one of the keys [^] or [v] causes change of
current position (flashing digit) or the sign (+/-). Short pressing of the [ENTER] button causes
change of the position (digit).
Press [ENTER] at least 2 seconds to accept the changes, after that question “SEt?” is
displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it
in EEPROM) press [ENTER] button shortly after “SEt?” is displayed. To cancel the changes
press [ESC] button shortly after “SEt?” is displayed. After that device returns to the menu.
7.2.2. Numeric parameters (slide change mode)
In “slide change” mode (“Edit”=”Slid”), buttons [^] and [v] has different functions.
To increase edited value press (or press and hold) [^] button only, the increasing
became quickest as long as button [^] is pressed. To slow down the increasing, button [v] can
be used. If [v] is pressed shortly (and button [^] is still pressed), increasing slow down for
a moment only, if [v] is pressed and held while button [^] is still pressed the increasing slow
down and will be kept on lower speed.
To decrease edited value press (or press and hold ) [v] button only. The decreasing
became quickest as long as button [v] is pressed. To slow down the decreasing, button [^]
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User manual - CONTROLLER PUR-94
can be used. If [^] is pressed shortly (and button [v] is still pressed), decreasing slow down for
a moment only, if [^] is pressed and held while button [v] is still pressed the decreasing slow
down and will be kept on lower speed.
Press [ENTER] at least 2 seconds to accept the changes, after that question “Set?” is
displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it
in EEPROM) press [ENTER] button shortly after “SEt?” is displayed. To cancel the changes
press [ESC] button shortly after “SEt?” is displayed. After that device returns to the menu.
7.2.3. Switch parameters (“LIST” type)
Switch parameters can be described as a sets of values (a lists) out of which only one of
the options available on the list can be selected for the given parameter. Options of switching
parameter are selected using [^], [v] keys.
Short pressing of [ENTER] causes in displaying of the acknowledge question (“SEt?”). If
key [ENTER] is pressed again, the changes are accepted, stored in EEPROM end the edition
process finished. Pressing the key [ESC] after “SEt?” causes in cancelling of made changes
and returning to menu.
Functions of buttons when editing numeric and switching parameters:
While editing numeric parameter:
• change of current (flashing) digit
• slide change of value (acceleration, deceleration, direction change)
While editing switch parameter - selection of switch parameter.
ENTER
ESC
MENU
If numerical parameter is being edited, a short press of [ENTER] button
change edited position. A long press of [ENTER] button (at lest 2 sec.)
causes of display a ”SEt?” ask, which allow user to make sure if change of
the parameter value is correct. If switch parameter is being edited, a short
press of [ENTER] button causes of display a ”SEt?” ask. When [ENTER]
button is pressed again (while ”SEt?” is displayed) the new value of the
parameter is stored in EEPROM memory.
Pressing this button operator can cancel the changes done up to now (if they
were not approved by [ENTER] button after the ”SEt?” ask) and come back
to menu
7.3. MENU DESCRIPTION
“- - - -”
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- password checking. If some password different from “0000” is set, then every
enter to main menu follows the entering of password. If entered password is
correct then first menu position will be displayed else warning “Err”, and unit
returns to measurement mode.
Due to problem with direct displaying of “m” and “K” letters, they are exchanged
with special signs “ ” for “m” and “ ” for “K” respectively. However, in user
manual letters “m” and “K” are used to make it more readable (example: “modE”,
“tc K”).
User manual - CONTROLLER PUR-94
7.3.1. “rEL1” menu
This menu allows to configure the operation mode of relays and LEDs marked „R” (e.g. „R1”).
If there are few relay outputs available, then every output has its own configuration menu
(e.g. menu “rEL2” for relay (LED) “R2”). Principle of the relays operation is described in
paragraph CONTROL OF THE RELAY OUTPUTS.
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“Sour”
The relay outputs and LEDs (named R) can be controlled depend on both - the
current value and the peak value (when peak detection is active) of the input
signal.
If device is not equipped with one or more relay outputs, menus refer to this
relays are available, but apply to LED indicators only. In such case LEDs
indicates exceeding of particular thresholds.
- this parameter specifies the source of the signal controlling the output.
“InPU” - output is controlled using signals from the measurement input,
“modb” - control via Modbus registers.
“PidH” - control via the control loop of the PidH controller,
“PidC” - control via the control loop of the PidC controller,
“modE” - relay operation mode.
“noAC” - the relay is not active (permanent turned off)
“on”
- one threshold mode, the relay is turned ON when input signal exceeds
SEtP + HYSt value, and is turned off back when the input signal became
lower than SEtP – HYSt,
“oFF”
- one threshold mode, the relay is turned OFF when input signal exceeds
SEtP + HYSt value, and is turned on back when the input signal became
lower than SEtP – HYSt,
“in”
- two threshold mode, the relay is turned ON when the input signal is
bigger than “lower threshold + HYSt” and lower than “bigger threshold
– HYSt”, and turned off when the input signal is contained in the second
zone. The bigger threshold means bigger one of “SEtP” and “SEt2”
thresholds, the lower threshold” means lower one of “SEtP” and
“SEt2” thresholds.
“out”
- two threshold mode, relay is turned ON when the input value is bigger
than “bigger threshold + HYSt” and lower than “lower threshold –
HYSt”, and turned on when the input signal is contained in the second
zone. The bigger threshold means bigger one of “SEtP” and “SEt2”
thresholds, the lower threshold means lower one of “SEtP” and “SEt2”
thresholds.
“PULS” - available only for OC-type output. Turns on PWM mode for OC-type
output.
“SEtP”
- first threshold of the relay (range -999 ÷ 9999). Negative values can be input by
selecting a “-” sign on first digit (to change value use [^] and [v] buttons).
Threshold is the medium value of relay hysteresis.
“SEt2”
- second threshold of the relay (range -999 ÷ 9999). Negative values can be input
by selecting a “-” sign on first digit ( to change value use [^] and [v] buttons). This
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User manual - CONTROLLER PUR-94
threshold is accessible when “modE” parameter is set to “in” or “out” value.
Threshold is the medium value of relay hysteresis.
“HYSt”
- hysteresis of relay (range 0 ÷ 999). Full hysteresis of the relay is equal to 2 times
“HYSt” parameter. The relay state can change when an input signal is out of
threshold-hysteresis to threshold+hysteresis zone.
Presented parameters should be set to ensure that “SEtP” + “HYSt”,
“SEt2” + “HYSt”, “SEtP” - “HYSt” or “SEt2” - “HYSt” does not exceed the
measure range. Additionally, in two threshold mode (“modE”= “in” or “out”),
the hysteresis for both thresholds must not cover each other (in other case relay
can't change his state).
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LEDs light when relays are closed, independently of relays' mode.
When power supply fail, unit do not store relays state selected by RS-485
interface.
“OFFS”
- this parameter specifies the difference between the setpoint value to the controller
and the signal measured by the device, which will cause an output response to that
signal,
“SEnS”
- this parameter specifies what percentage of the controller’s output status must be
achieved in order for the output to react to the status of the controller.
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In a situation where the parameters ”OFFS” and ”SEnS” are other than zero, the
controller only responds to the signal when the conditions described for both of
these parameters are met simultaneously.
“t on”
- turn on delay time, the relay is turned on with delay equal “t on” if the input value
exceeds appropriate border value (defined with threshold and hysteresis), at
least “t on” time. “t on” range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of
this parameter is set by “unit” parameter.
“toFF”
- turn off delay time, the relay is turned off with delay equal “toFF” if the input value
exceeds appropriate border value (defined with threshold and hysteresis), at
least “toFF” time. “toFF” range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of
this parameter is set by “unit” parameter.
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“unit”
36
If time when the input signal exceeds some border value is shorter than “t on” or
“toFF” time, the relay do not change its state (see paragraph: 6.3. CONTROL
OF THE RELAY OUTPUTS).
- unit of time for “t on” and “toFF” parameters. Can be set on one of two values:
“min”
- minutes,
“SEC”
- seconds.
User manual - CONTROLLER PUR-94
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The above-mentioned parameters do not occur when the “modE" parameter is
set to "PULS". In such a configuration the user has at his disposal the
parameters: "InLo", "INHi", "Peri", "H on" and "HoFF".
“InLo”
- the lower limit of the range within which a change in the signal source causes a
change in the PWM output signal fill factor. Below this limit the PWM output signal
will have the fill factor equal to 0% ,
“InHi”
- the upper limit of the range within which a change in the signal source causes a
change in the PWM output signal fill factor. Above this limit the PWM output signal
will have the fill factor equal to 100%
“PEri”
- the duration of one cycle of the PWM output signal in the range 0 ÷ 999.9 s,
“H on”
- low state minimal time,
“HoFF”
- high state minimal time,
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To ensure proper operation, the sum of the values of the "H on" and "HoFF"
parameters should not exceed the value of the "Peri" parameter.
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The duration of the high and low status (parameters "H on" and "HoFF") are
calculated for each period (the "Peri" parameter) separately.
“AL”
- this parameter defines how the relay reacts to an alarm state.
The following options are available:
“noCH”
“on”
“oFF”
“Acti”
- relay do not change his state,
- relay will be turned on,
- relay will be turned off.
- this occurs only when the "modE" parameter is set to "PULS"; it turns
on and disables responses to alarm state for the OC type output,
“noCH” - the output status does not change during alarm state.
“USdu” - in an alarm state, the output sets itself to the fill factor as set in
the "duty" parameter
“duty”
- this occurs only when the "modE" parameter is set to "PULS"; it
specifies the fill factor in the event of an alarm state,
If parameter “modE” is set to “on” , “oFF”, “in”, “Out” or “PULS” the “critical
situation” means that allowable measurement range is exceeded.
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User manual - CONTROLLER PUR-94
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If option “noCH” is selected for “AL” parameter, behaviour of the relay may
depend on “FiLt” parameter in some cases. If “FiLt” is set to big value and the
input signal drops, result value of the measure will change slow, causes of
turning on or off relay due to thresholds values. The critical situation is slowly
detected, so it is impossible to predict the relay state in that situations.
If parameter “AL” = “on”, the relay will be turned on in the critical situations,
even if his parameter “modE” = “noAC”.
7.3.2. “bEEP” menu
This menu contains options connected with acoustic signal :
"AL”
"r1”
"r2"
"r3"
"r4"
- if this parameter is set to
- if this parameter is set to
- if this parameter is set to
- if this parameter is set to
- if this parameter is set to
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“on”, any critical situation causes by acoustic signal
“on”, activation of relay R1 causes by acoustic signal
“on”, activation of relay R2 causes by acoustic signal
“on”, activation of relay R3 causes by acoustic signal
“on”, activation of relay R4 causes by acoustic signal
Acoustic signal (turned on by e.g. relay ) can be turned off by pressing of any
button
7.3.3. “inPt” menu (common parameters)
This menu presets the measurement input:
“tYPE" - type of the input / sensor. This parameter can be set to values:
”0-20”
- current input - range 0..20 mA,
”4-20”
- current input - range 4..20 mA,
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”0-5”
”1-5”
”0-10”
”2-10”
- voltage input - range 0..5 V,
- voltage input - range 1..5 V,
- voltage input - range 0..10 V,
- voltage input - range 2..10 V,
”60”
”75”
”100”
”150”
- voltage input - range 0..60 mV,
- voltage input - range 0..75 mV,
- voltage input - range 0..100 mV,
- voltage input - range 0..150 mV,
”Pt 1”
”Pt 5”
”Pt10”
- Pt 100 input,
- Pt 500 input,
- Pt 1000 input,
”tc k”
”tc S”
”tc J”
”tc t”
”tc n”
”tc r”
”tc b”
”tc E”
- thermocouple input,
- thermocouple input,
- thermocouple input,
- thermocouple input,
- thermocouple input,
- thermocouple input,
- thermocouple input,
- thermocouple input,
type K,
type S,
type J,
type T,
type N,
type R,
type B,
type E.
User manual - CONTROLLER PUR-94
For current and voltage inputs displayed values are defined by parameters
“Lo C”,”Hi C” (or by user defined characteristic points) and parameter ”Pnt”.
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”FiLt”
- option allows to change the filtration time constant. Expressed in seconds.
Acceptable values range from 0 (no filtration ) to 255.
7.3.4. “inPt” menu (parameters of temperature inputs)
”Conn” - connection method of RTD input. This parameter can be set to values:
"4 in"
- 4-wire method,
”3 in”
- 3-wire method,
”2 in”
- 2-wire method.
“toFS”
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- offset expressed in °C, range ± 9.9°C (for RTD input) or ± 99°C (for TC input). This
parameter allows shifting of measurement scale, and express value added to
calculated (measured) result.
The offsetting of a scale is realised independently of cold ends automatic
compensation.
7.3.5. “inPt” menu (parameters of current and voltage inputs)
”CHAr”
- this option presets type of the conversion characteristic, and can be set to:
”Lin”
- linear
When one of those characteristics is chosen display
“Sqr”
- square
range is defined by “Lo C” and “Hi C”.
“Sqrt”
- square root
“USEr”
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- user defined characteristic. Maximal length 20 points. Every point is
defined by user. Adding, Editing and Deleting of points is done by options
„AddP”, „EdtP”, „dELP” („InPt” menu) respectively.
If user defined characteristic is selected, and if number of defined points is lower
than 2 then warning ”Errc” is displayed in measurement mode.
The process of displayed result calculation is described in details in DISPLAY VALUES
CALCULATION paragraph.
”Pnt”
“Lo C”
“Hi C”
- decimal point position. It can be set to one of:
“
0”, “ 0.0”, “ 0.00”, “0.000”
Decimal point position is changed by [^], [v] buttons.
These parameters describe the values displayed for minimum and maximum input
current. For example, if input type is set to 4-20 mA “Lo C” parameter defines the
value displayed when input current is equal 4 mA, and “Hi C” parameter defines
the value displayed for 20 mA of input current. Available range for these
parameters: -999 ÷ 9999. Negative values can be set by entering '-' sign on the first
position (by use of [^], [v] buttons).
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User manual - CONTROLLER PUR-94
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If user defined characteristic is selected (parameter “CHAr” = ”USEr”) the
parameters „Lo C” and „Hi C” are not available for modification, due to their values
are calculated from defined characteristic.
“AddP”
- this menu allow user to add single point to the user defined characteristic.
After selection of this option device waits for „X” and „Y” coordinates of new point.
Modification of the coordinates is done accordingly to numerical parameters edition.
Coordinate „X” defines the percentage ratio of input current to selected current
range. The „X” range: -99,9 ÷ 199,9. Coordinate „Y” defines displayed value for
particular „X” value. The „Y” value can be changed in range: -999 ÷ 9999, decimal
point position depend on „Pnt” parameter (menu ”inPt ”).
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“dELP”
“EdtP”
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User can not enter two points with the same value of „X” coordinate. If user trays
to do it, ”Err” warning is displayed. To modify any defined point use ”EdtP”
option.
• To distinguish „X” and „Y” coordinates, if „X” coordinate is displayed an
additional decimal point on utmost right position is displayed.
• If user defined characteristic is selected, and if number of defined points is lower
than 2 then warning ”Errc” is displayed in measurement mode.
- this option allows user to delete any of the points of the user defined
characteristic. After selection current number of points of the user defined
characteristic is displayed for about approx. 1.5 sec. After that device waits for
selection of point being deleted (by [^], [v] buttons). The short pressing of [ENTER]
button causes by switching between X and Y value of the displayed point. The long
press (press and hold at least 2 sec) of [ENTER] button causes by displaying
„dEL?” ask. If [ENTER] button is pressed again, current point is deleted and new
updated number of points of the user defined characteristic is displayed.
- this option allows user to modify of particular point of the user defined
characteristic. After selection current number of points of the user defined
characteristic is displayed for about approx. 1.5 sec. After that device waits for
selection of point being edited (by [^], [v] buttons). The short pressing of [ENTER]
button causes by switching between X and Y value of the displayed point. The long
press (press and hold at least 2 sec) of [ENTER] button causes by entering to edit
the selected coordinate of the point. Modification of the coordinates is done
accordingly to numerical parameters edition.
“AddP”, ”dELP” and “EdtP” options are available only if the user defined
characteristic is used (it means when parameter “CHAr” = ”USEr”).
“Lo r”, ”Hi r”
- these parameters define the expansion of nominal range in percent. They
determine the permissible range of input signal (Figure 7.1).
The permissible range allow user to exceed the nominal range of input signal.
If input value is contained in the permissible range a proper result is displayed.
If input signal exceeds this range (defined by “Lo r” and “Hi r”), “-Lo-” or “Hi-” warning is displayed depend on input signal value.
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User manual - CONTROLLER PUR-94
”Lo r” = 75,0% (3 mA)
”Hi r” = 5,0 % (1 mA)
nominal measurement range (4-20mA)
Imin
0
1
4
Imax
20
21
22
[mA]
permissible measurement range
display
message ”-Lo-”
measurement result is displayed
regardless on nominal range exceeding
display
message ”-Hi-”
Figure 7.1 Example of definition of permissible range of input signal “Lo r” and “Hi r” parameters (“4-20” mode)
The “Lo r” parameter is important if input is set to “4-20”, “1-5” or “2-10” mode
only, and determines lower border of the permissible range. In the other cases (for
current and voltage ranges), lower border of the permissible range is always 0.
For example if input is set to “4-20” mode, then lower border is calculated due to
expression:
Imin = 4 mA - 4 mA × “Lo r” %.
The “Lo r” value can be set from 0 to 99.9%.
Parameter “Hi r” determines the upper border of the permissible range accordingly
to the expression (for all modes).
For example if input is set to “4-20” mode, then upper border is calculated due to
expression:
Imax = 20 mA + 20 mA × “Hi r” %.
The value of “Hi r” can be set from 0 to 19.9%
In example no 1 of the DISPLAY VALUES CALCULATION paragraph the
procedure of the permissible input range determining is presented in details.
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If the measurement value do not exceeds permissible measurement range but
displayed value exceeds range -999 ÷ 9999, the warning ”-Ov-” is displayed rather
than the calculated result.
7.3.6. ”OutP” menu
This menu contains parameters of analogue output control. Menu is available if the
device is equipped witch analogue output.
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“OSou”
Analogue output can be controlled depend on both present measured value and
peak value (if peak detection is enabled).
- the source for the analogue output:
“InPU” - the output is controlled using signals from the measurement input,
“modb” - the output is controlled using Modbus registers.
“PidH” - the output is controlled by the positive part of the PID controller’s
characteristics,
“PidC” - the output is controlled by the negative part of the PID controller’s
characteristics,
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User manual - CONTROLLER PUR-94
“Omod” - analogue output mode. Depending on version of the device there are following
options:
For active current output:
”oFF”
- current output disabled,
”0-20”
- current output enabled with 0 ÷ 20 mA mode,
“4-20”
- current output enabled with 4 ÷ 20 mA mode,
”modb” - current output controlled via RS-485 interface.
For passive current output:
”oFF”
- current output disabled,
“4-20”
- current output enabled with 4 ÷ 20 mA mode,
”modb” - current output controlled via RS-485 interface.
For active voltage output:
”oFF”
- voltage output disabled,
”0-5”
- voltage output enabled with 0 ÷ 5V mode,
”1-5”
- voltage output enabled with 1 ÷ 5V mode,
”0-10”
- voltage output enabled with 0 ÷ 10V mode,
“2-10”
- voltage output enabled with 2 ÷ 10 V mode,
”modb” - voltage output controlled via RS-485 interface.
”OUtL”
- this parameter determines the input value for which the output signal is minimal
(depend of output mode „Omod”).
“OUtH”
- this parameter determines the input value for which the output signal is maximal
(depend of output mode „Omod”).
The analogue output value is calculated due to formula given below:
Out=
where:
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W −" OUtL"
× B− A A
"OUtH" −"OUtL"
W – displayed value,
Out – analogue output value,
B – higher range limit (20mA / 5V / 10V),
A – lower range limit (0mA / 4mA / 0V / 1V / 2v),
“OutL” parameter can be greater than “OutH”. In this case the conversion
characteristic is reversed, it means that if input value raises the output value falls.
”Lo r”, ”Hi r”
- this parameters define the output value range. If calculated output value Out
exceeds defined range then analogue output generates signal equal to upper
or lower border of the defined range. These parameters defines the percentage
extension of nominal analogue range (with 0,1% resolution).
Parameter “Lo r” defines lower border of the range due to formula:
Outmin = A - (A × “Lo r” %), where:
A – lower signal value range limit.
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User manual - CONTROLLER PUR-94
This parameter can be set from 0 to 99.9% (for active current output and active
voltage output) or from 0 to 29.9% (for passive current output).
Parameter “Hi r” defines higher border of the range due to formula:
Outmax = B + (B × “Hi r” %), where:
B – higher signal value range limit.
This parameter can be set from 0 to 19.9% (for active and passive current
output) or from 0 to 9.9% (for active voltage output).
In example on page 58 of the DISPLAY VALUES CALCULATION paragraph
the procedure of the analogue outputs determining is presented in details.
“AL”
- this parameter determines the behaviour of analogue output if any critical situation
occurs. According to version of the device, this parameter can be set:
For active current output:
“noCH” - current will not change,
“22.1”
- current will be set to 22.1 mA,
“3.4”
- current will be set to 3.4 mA,
“0.0”
- current will be set to 0 mA.
For passive current output:
“noCH” - current will not change,
“22.1”
- current will be set to 22.1 mA,
“3.4”
- current will be set to 3.4 mA,
For active voltage output:
“noCH” - voltage will not change,
“11.0”
- voltage will be set to 11 V,
“5.5”
- voltage will be set to 5.5 V,
“1.2”
- voltage will be set to 1.2 V.
“0.6”
- voltage will be set to 0.6 V,
“0.0”
- voltage will be set to 0 V.
When the critical situation goes, the output signal will be set to value calculated due to
formulas given above.
7.3.7. “CtrL” Menu
The menu includes configuration options for the control loops of the PID controller
featured in the device.
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User manual - CONTROLLER PUR-94
Offset
OF-H
OF-C
1
Setpoint
SEtP
or
Fuzzy
setpoint
Feedback
Dead zone
Proportional
block
Integral
block
dEAd
P -H
P -C
tI-H
tI-C
Err
LooP
Derivative
block
Inertial
block
td-H
td-C
InEr
Upper limit
Hi-H
Hi-C
Output
limits
Lower limit
Lo-H
Lo-C
Figure 7.2. General diagram of the PID controller featured in the PUR-94 device
“modE” - operating mode of the controllers:
“oFF”
“Pid”
“At-F”
“At-H”
“At-C”
- the controller is switched off. Outputs of control loops are set at idle, but all
their parameters are available for configuration,
- normal operating mode of the controller,
- the auto-tuning procedure for one of the control loops of the controller in an
arrangement with two actuator elements. Selection of the control loop to be
tuned depends on the setting of the SetP parameter. Following this procedure,
the device automatically switches to PiD mode,
- the auto-tuning procedure for the PiD-H loop in an arrangement with a single
actuator element. Once completed, the device automatically switches to PiD
mode,
- the auto-tuning procedure for the PID-C loop in an arrangement with a single
actuator element. Once completed, the device automatically switches to PiD
mode,
“SEtP”
- the setpoint of the controllers. The initial state of the controlled object to which the
controllers will progress,
“PArH”
- PID-H control loop coefficients,
“P -H”
“tI-H”
“td-H”
“OF-H”
“Lo-H”
“Hi-H”
“PArC”
- PID-C control loop coefficients,
“P -C”
“tI-C”
“td-C”
“OF-C”
“Lo-C”
“Hi-C”
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- proportional gain factor P,
- integral gain factor I,
- derivative gain factor D,
- value by which control loop limitations are shifted,
- lower limit of the control loop’s characteristics,
- upper limit of the control loop’s characteristics.,
- proportional gain factor P,
- integral gain factor I,
- derivative gain factor D,
- value by which control loop limitations are shifted,
- lower limit of the control loop’s characteristics,
- upper limit of the control loop’s characteristics,
User manual - CONTROLLER PUR-94
“ConF”
- input settings of the controller:
“dEAd”
- width of the dead zone. For the definition of the dead zone, see chapter
Błąd: Nie znaleziono źródła odwołaniaBłąd: Nie znaleziono źródła
odwołania,
“StAr”
- the parameter (expressed in %) allowing to set the controller’s output status
at the time of launch, depending on the controller’s output parameters,
“dSrC”
- this parameter defines how to interpret the feedback used to calculate the
controller’s response,
“Err”
“LooP”
“InEr”
- used for calculations is the output of the controlled object following prior
calculation of the error at the controller’s input and a check on the
condition of the controller’s operation as a result of dead zone range
being exceeded,
- used for calculations is the object's output without calculating the error
on the controller’s input or taking into account the dead zone,
- the settings of the inertial block. For the definition of the inertial element refer
to chapter Błąd: Nie znaleziono źródła odwołaniaBłąd: Nie znaleziono
źródła odwołania,
−
t
e T
Iner=
T
“oFF”
“HArd”
“mEdi”
“SoFt”
where:
Iner – response of the inertial block,
t – successive moments in time,
T – the inertia factor specified by the parameters:
- inertia is disabled. The Iner block = 1,
- factor T = 0,07,
- factor T = 0,14,
- factor T = 0,21,
45
User manual - CONTROLLER PUR-94
innertial block
response
14
12
10
8
hard
6
medi
soft
4
2
0
0
0,2
0,4
0,6
0,8
1
1,2
1,4
1,6
1,8
2
seconds
Figure 7.3. Responses of the inertial block depending on factor T
““FUZL” - an additional fuzzy logic block. It enables a smooth change of the setpoint for the
soft control of the object,
46
“SLOP”
- this parameter specifies the change in the setpoint fuzzy logic block, for
every unit specified in the parameter as "unit". Setting a "0" value disables
the fuzzy logic block,
“unit”
- this parameter specifies the unit of time in which the setpoint of the fuzzy
logic block will increase,
“HySt”
- the difference between setpoint specified for the controller (specified in the
"SETP" parameter) and the setpoint of the fuzzy logic block, to which the
setpoint of the fuzzy logic block will seamlessly progress,
User manual - CONTROLLER PUR-94
f uzzy v alue
120
100
80
SLOP = 0
SLOP = 1
SLOP = 5
SLOP = 10
60
40
20
0
0
20
40
60
80
100
120
140
unit
Figure 7.4. Change in the fuzzy setpoint depending on the setting of the SLOP parameter
7.3.8. ”bri” parameter
This parameter allows user to set bright of the LED display, bright can be set to
conventional values from 1 to 8.
7.3.9. ”HOLd” menu
This menu contains parameters connected with peak detection function. See also full
description of the peak detection function in paragraph: DETECTION OF THE PEAK VALUES
“modE” - the type of detected changes of the input signal, can be set to values:
”norm”
”inv”
- peaks, peak and next drop of the input signal of value equal at least “PEA”,
- drops, drop and next peak of the input signal of value equal at least “PEA”,
“PEA”
- minimal detected signal change classified as peak or drop (see Figure 6.4)
“timE”
- maximum time of displaying of the peak (drop) value, can be set from 0.0 to 19.9
sec, with 0.1 sec. resolution. If „HdiS”=”HOLD” then setting parameter "timE"=0.0
causes holding peak value until [ESC] button is pressed. If „HdiS”=”rEAL” then
value "timE"=0.0 means no holding.
“HdiS”
- type of displayed values:
”rEAL”
”HOLd”
- current value is displayed,
- peak (drop) value is displayed,
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User manual - CONTROLLER PUR-94
“H r1” ÷ “H r4”- relay/LED outputs ( R1÷R4) operation mode:
”rEAL”
”HOLd”
”HOUt”
- relay/LED operates depend on the current value,
- relay/LED operates depend on the peak (drop) value.
- current output operation mode:
”rEAL”
”HOLd”
- current output operates depend on the current value,
- current output operates depend on the peak (drop) value.
7.3.10. ”SECu” menu
This menu contains presets connected with availability of other parameters:
“Scod”
- user password (4-digits number). If this parameter is set at value “0000”, user
password is turned off.
If the user do not remember his password, the access to the menu is possible
by the “one-use password”. To get this password please contact with
Marketing Division. “Single use password” can be used only one time, after
that it is destroyed. Entering this password causes in clearing of user
password, it means sets the user password to „0000”.
i
The “one-use password” can be used ONE TIME ONLY, it is impossible to use it
again! The “one-use password” can be restored by Service Division only.
“A r1 ÷ A r4” - this option permits user (”on”) or prohibits (”oFF”) to modify the thresholds
of the relays/LEDs R1 ÷ R4 without knowledge about user password
“APid”
- this option enables one to permit ("on") or prohibit ("oFF") modification of the
controller’s setpoint in measurement mode without knowing the user password
7.3.11. ”rS” menu
This menu is connected with RS-485 interface, and sets his properties:
”Addr”
- this parameter defines the address of the device, accordingly to Modbus protocol.
It can be set in range from 0 to 199. If the value 0 is set then device, responds to
frames with address 255 (FFh).
”bAud”
- this parameter determines RS-485 interface baud rate. It can be set to one of 8
possible values: ”1.2”, ”2.4”, ”4.8”, ”9.6”, ”19.2”, ”38.4”,”57.6”,”115.2”, which
respond to the baud rates of 1200, 2400, 4800, 9600, 19200, 38400, 57600 and
115200 bit/s respectively.
”mbAc” - this parameter sets the access to the configuration registers of the device.
Possible values:
”on”
- configuration registers can be set via RS-485 interface,
”oFF”
- configuration registers can not be set via RS-485 interface.
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User manual - CONTROLLER PUR-94
i
The access to registers no 04h and 05h cant be denied by ”mbAc” parameter (see:
LIST OF REGISTERS).
”mbtO”
- this parameter defines maximal time (sec) between following frames received by
the device. If the delay will be greater than the value of ”mbtO” parameter, the
relays which are controlled via RS-485 interface, will set to alert state (see "OUtP"
menu, and “rEL1” menu description). Parameter “mbtO” can be set to values
from 0 to 99 seconds. The value 0 means that the time will be not controlled.
”rESP”
- this parameter defines minimal (additional) delay between the Modbus message
and the answer of the device (received and sent via RS-485 interface). This
additional delay allows the device to work with poor RS-converters which do not
works properly on baud rates higher than 19200. This parameter can be set to one
of values:
”Std”
” 10c”
” 20c”
” 50c”
”100c”
”200c”
i
- answer as quick as possible, no additional delay
- answer delayed of 10, 20, 50, 100 of 200 chars respectively, where
one character time depends on selected baud rate
In the most cases parameter ”rESP” should be set to ”Std” (no additional delay).
Unfortunately for some third party RS-converters ”rESP” should be adjusted
experimentally. Table 7.1 contains most frequently used values.
”bAud” parameter
“38.4”
“57.6”
“115.2”
”rESP” parameter
“ 10c”
“ 20c”
“ 50c”
Tab.7.1. Settings of ”rESP” parameter
7.3.12. ”Edit” parameter
This parameter allows to change the edition mode of numerical parameters:
”dig”
- the change to “by digit” mode,
”Slid”
- slide change mode.
7.3.13. ”dEFS” parameter
This setting allows to restore the factory settings of the device. To get the access to this
option special password is required: „5465”, next the device displays acknowledge question
„SEt?”. Press [ENTER] to acknowledge the restoring of factory settings or [ESC] to cancel.
7.3.14. ”SErv” menu
This menu contains the parameters for authorized service only. To enter this menu
proper service password must be entered. Improper settings can causes of damage of the
device.
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User manual - CONTROLLER PUR-94
7.4. MENU STRUCTURE
Measurement mode
Press and hold at least 2 seconds
ESC
ESC
MENU
MENU
4-digit user password entering (if it is different from „0000”)
0___
ENTER
ESC
MENU
ENTER
rEL1
ENTER
Sour
ENTER
ENTER
ESC
MENU
rEL2
ESC
Options similar
to „rEL1” menu
modE
Options similar
to „rEL1” menu
SEtP
MENU
ENTER
ESC
MENU
rEL3
ESC
MENU
ESC
MENU
ENTER
ESC
MENU
rEL4
ESC
Options similar
to „rEL1” menu
HySt
MENU
ENTER
ESC
MENU
bEEP
ENTER
AL
ENTER
ESC
Parameter
edition
MENU
toFF
r2
unit
r3
InLo
r4
ENTER
ESC
MENU
InHi
ENTER
tYPE
inPt
ENTER
Notice:
Quantity of parameters available
in „inPt” menu depends on value
of “tYPE” parameter
ESC
MENU
Parameter
edition
PEri
H on
CHar
HoFF
FiLt
AL
Pnt
Lo C
Hi C
AddP
dELP
EdtP
Lo r
50
ESC
MENU
Conn
toFS
See next page
t on
MENU
r1
ESC
SEt2
Hi r
ESC
MENU
Parameter
edition
User manual - CONTROLLER PUR-94
See previous page
ENTER
ESC
MENU
ENTER
OSou
OutP
ENTER
ESC
Parameter
edition
MENU
Omod
OUtL
ESC
MENU
OUtH
Lo r
Hi r
AL
option
ENTER
ESC
MENU
ENTER
modE
CtrL
ENTER
ESC
Parameter
edition
MENU
SEtP
ENTER
ESC
MENU
bri
ENTER
COEF
PArH
MENU
ENTER
ESC
MENU
ESC
Parameter
edition
ENTER
modE
HOLd
ENTER
PEA
timE
ESC
MENU
ESC
Parameter
edition
ESC
MENU
PArC
MENU
ConF
FuZL
Hdis
H r1
H r2
H r3
H r4
HOUt
See next page
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User manual - CONTROLLER PUR-94
See previous page
ESC
MENU
ENTER
SECu
ENTER
Scod
ENTER
A r1
ESC
MENU
ENTER
ESC
MENU
ENTER
Addr
rS
ENTER
ESC
MENU
ESC
Parameter
edition
A r2
A r3
MENU
bAud
A r4
mbAc
APid
mbtO
ENTER
ESC
MENU
Edit
ESC
MENU
Parameter
edition
rESP
4-digit special
password entering
ENTER
ESC
MENU
ENTER
0___
dEFS
MENU
ESC
MENU
ESC
MENU
52
SErv
ENTER
SEt?
ESC
Default settings
restoring
ESC
MENU
Parameter
edition
User manual - CONTROLLER PUR-94
8. THE ALARM LED
Alarm LED (AL) lights in cases:
• exceeding of permissible measurement range
• detection of sensor malfunction (shortcut or break of measurement circuit)
9. OVER-CURRENT PROTECTION
The current input of the device is equipped with over-current protection circuit. This circuit
protects the standard resistor to damage. Maximum input current is set to 50mA (typical).
When temperature of the standard resistor falls, the protection circuit will turn off himself
automatically, and the device will measure the input current again. Due to thermal
phenomenon in the standard resistor, precision of the measurement may be lower, during few
minutes (up to the standard resistor temperature will falls to the environment temperature).
10. DISPLAYED VALUES CALCULATION
For simplicity of examples it's assumed that current input is selected, and all calculations
are related to this input. When voltage input is selected calculations are similar (be sure of
particular ranges and units).
The first step to compute the result of measure is the calculation of the normalized result
(it means result of 0-1 range). To do it, the begin of the input range (0 mA for 0-20mA range,
and 4mA for 4-20mA range) must be subtracted from measured value. Next, received result
must be divided by the width of the input range ( it means 20mA for 0-20mA range, and 16mA
for 4-20mA range). So normalized result can be expressed by expressions:
I inp. −4
16
I inp.
I n=
20
I n=
for
4 ÷ 20 mA range
for
0 ÷ 20 mA
range
where Iinp. Means input current (in mA), and In – normalized result.
i
If measured value exceeds the nominal input range (0-20mA or 4-20mA), and do
not exceed the permissible input range, then received normalized In result will
exceed 0-1 range, e.g. input range 4-20 mA, input current = 3 mA – the normalized
result is equal -0,0625, and for input current = 22 mA, the normalized result is equal
1,125. In such cases presented expressions are still correct.
10.1. ADDITIONAL CALCULATIONS (USED CONVERSION CHARACTERISTIC)
The manner of the additional computation of the displayed result depends on selected
conversion characteristic. All presented charts are connected with the input range 4 - 20 mA.
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User manual - CONTROLLER PUR-94
10.1.1. Linear characteristic
The normalized result is converted by fixed coefficients determined by “Lo C” and “Hi C”
parameters (when the normalized results is equal 0, then value “Lo C” is displayed, and when
the normalized results is equal 1, then value “Hi C” is displayed). Expression presented below
shows the manner of result calculation:
W = I n × "Hi C" −"Lo C"   "Lo C" ,
where W means the displayed value.
The value of the “Lo C” parameter can be higher than the value of “Hi C”
parameter. In such a case, for an increasing value of input current the displayed
value decreases.
i
Lo C
Displayed
value
Displayed
value
Hi C
Hi C
Lo C
0
4
8
12
Input current [mA]
16
20
0
4
8
12
Input current [mA]
16
20
Figure. 10.1 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic
10.1.2. Square characteristic
The normalized result is squared and further conversion is done as for linear characteristic.
Conversion is made accordingly with the expression:
2
W = I n × "Hi C" −"Lo C"   "Lo C" ,
where W means the displayed value.
Displayed
value
Lo C
Displayed
value
Hi C
Lo C
Hi C
0
4
8
12
16
Input current [mA]
20
0
4
8
12
16
Input current [mA]
20
Figure. 10.2 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic
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User manual - CONTROLLER PUR-94
10.1.3. Square root characteristic
The normalized result is rooted and further conversion is done as for linear characteristic.
Conversion is made accordingly with the expression:
W =  I n × "Hi C" −"Lo C"   "Lo C" ,
where W means the displayed value.
i
Showed above expression is not valid when normalized result is negative. It is
possible for 4-20 mode only. In this case (I n<0) the displayed result is equal “Lo C”
(see graphs below).
Lo C
Displayed
value
Displayed
value
Hi C
Lo C
Hi C
0
4
8
12
16
Input current [mA]
20
0
4
8
12
16
Input current [mA]
20
Figure. 10.3 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic
10.1.4. User defined characteristic
User defined characteristic is defined as set of X-Y points. Number of the points is variable and
may be set from 2 to 20 points which make linear segments (see graph and see Menu ”inPt”).
Due to the normalized result I n , the device computes specific segment, e.g. for characteristic
from figure below, and I n = 0,65 the segment between points X = ”50.0.” and X = ”70.0.” will
be chosen.
Let's mark those points as PL (point low) and PH (point high) - in this example PL= “50.0,”
and PH = “70.0.”, and the normalized result In for the point PL as Ip (in this example Ip = In(PL)
= 0,5). The displayed result is calculated accordingly to the expression:
W = I n − I p  ×
[Y PH −Y  PL]
× 100  Y  PL
[ X PH − X  PL]
where Y(PH), X(PH), Y(PL), X(PL) mean values of X and Y coordinates of PH and PL points.
i
If the normalized result exceeds the user defined characteristic values, then specific
utmost segment, defined by two next points, is used for calculations. If characteristic
from figure below is used, and if In>1 then segment defined by points
X(PL) = “90.0.”, X(PH) = “100.0.” will be used.
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User manual - CONTROLLER PUR-94
0
Normalized measurement In (for 0-20 mA range)
0,5
0,7
0,9
0,2
0,35
1
5-elements characteristic
Displayed value
X (PH) = „70.0.”
Y (PH)
X = „35.0.”
Y (PL)
X (PL) = „50.0.”
X = „20.0.”
Prąd wejściowy [mA]
X = „90.0.”
X = „100.0.”
0
4
8
12
16
20
Input current [mA]
Figure. 10.4 Example of user defined characteristic
10.2. EXAMPLES OF CALCULATIONS
Example 1: Selection of the permissible input range (“4-20” mode)
If in “4-20” mode the user sets “Lo r” = 20,0% and “Hi r” = 10,0%, then permissible
input currents range will be equal: 3,2 mA ÷ 22 mA. Lower border of the range is the result of
calculations: 4 mA - 4 mA × 20%, and the higher : 20 mA + 20 mA × 10%.
Example 2: The normalized In result calculation
Let the input mode = 4-20 mA. The normalized I n result is calculated accordingly to the
expression on page 53, so if Iin = 10 mA then 10 mA - 4 mA = 6 mA, and this result should be
divided by the width of input range (16 mA). Finally the normalized result: I n = 6/16 = 0,375.
In case when input current exceeds nominal measurement range, calculations are similar. For
example if input current is equal 2,5 mA then In = (2,5 - 4)/16 ≅ -0,0938, and if input current is
equal 20,5 mA then In = (20,5 - 4)/16 ≅ 1,0313.
Example 3: The linear characteristic
Let the input mode = 4-20 mA, and parameters “Lo C” and “Hi C” equal to -300 and 1200
respectively. The calculations will be done for three different input currents from example 2.
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User manual - CONTROLLER PUR-94
a) Iin =10 mA and In = 0,375
Accordingly to expression on page 54 for linear characteristic:
0,375 × [1200 -(- 300)] ≅ 562 and next, the “Lo C” value is added to the result , so the
displayed value:
W ≅ 562 + (-300) = 262
b) Iin = 2,5 mA and In = -0,0938.
W ≅ -441.
c) Iin = 20,5 mA and In = 1,0313.
W ≅ 1247.
Example 4: The square characteristic
Let the input mode = 4-20 mA, and parameters “Lo C” and “Hi C” equal to -300 and 1200
respectively. The calculations will be done for there different input currents from example 2.
a) Iin =10 mA and In = 0,375
Accordingly to expression on page 54 for square characteristic: (0,375) 2 × [1200 -(- 300)] ≅
211.
and next, the “Lo C” value is added to the result , so the displayed value:
W ≅ 211 + (-300) = -89
b) Iin = 2,5 mA and In = -0,0938.
W ≅ -287.
c) Iin = 20,5 mA and In = 1,0313.
W ≅ 1295.
Example 5: The square root characteristic
Let the input mode = 4-20 mA, and parameters “Lo C” and “Hi C” equal to -300 and 1200
respectively. The calculations will be done for there different input currents from example 2.
a) Iin =10 mA and In = 0,375
Accordingly to expression on page 55 for square root characteristic:
 0,375 × [1200 -(- 300)] ≅ 919.
and next, the “Lo C” value is added to the result , so the displayed value:
W ≅ 919 + (-300) = 619
b) Iin = 2,5 mA and In = -0,0938 , normalized result is negative , so the displayed value is equal
to “Lo C” parameter: W ≅ “Lo C” = -300.
c) Iin = 20,5 mA and In = 1,0313.
W ≅ 1223.
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User manual - CONTROLLER PUR-94
Example 6: The user defined characteristic
Let the input mode = 4-20 mA, and the user selected the 10 segment characteristic. To do this
it is necessary to enter X and Y coordinates of 11 points (see Menu ”inPt”).
The calculations will be done for three different input currents from example 2, so in
calculations some of the segments will be used only.
Let the following points will be given:
X1 = “00.0.”, Y1 = “-50.0”,
X2= “10.0.”, Y2 = “-30.0”,
....
X6 = “30.0.”, Y6 = “30.0”,
X7 = “40.0.”, Y7 = “80.0”,
....
X10 = “90.0.”, Y10 = “900.0”,
X11 = “100.0.”, Y11 = “820.0”,
Additionally all other points must to be defined and stored in the device memory.
a) Iin =10 mA and In = 0,375
The segment defined by X6 = “30.0.” and X7 = “40.0.” for this In will be selected. Accordingly
to expressions given for user defined characteristic (see page 55) X6(PL) = 30, Y6(PL) = 30,
X7(PH) = 40, Y7(PH) = 80 and Ip = 0,3 , the displayed value :
W = I n − I p  ×
[Y  PH −Y PL ]
× 100  Y  PL =
[ X  PH − X  PL]
=0,375−0,3 ×
[80−30]
× 100  30 ≃ 67
[ 40−30 ]
b) Iin = 2,5 mA and In = -0,0938, because of the normalized I n value is lower than 0, the
segment defined by X1 and X2 will be selected. X1(PL) = 0, Y1(PL) = -50, X2(PH) = 10,
Y2(PH) = -30 and Ip = 0. For these values the displayed value W ≅ -69.
c) Iin = 20,5 mA and In = 1,0313. , because of the normalized In value is higher than 1, the
segment defined by X10 and X11 will be selected, and X10(PL) = 90, Y10(PL) = 900,
X11(PH) = 100, Y11(PH) = 820 and Ip = 0,9 for these values the displayed value W ≅ 795.
Example 7: Current output value calculation
Lets assume that we have active current output and its parameters are:
“modE” = “4-20”, “OUtL” = 100, “OUtH” = 200, “Lo r” = 5.0, “Hi r” = 5.0
Parameters “Lo r” and “Hi r” define working range of current output to 3.8 ÷ 21 mA.
Output current will be calculated for three displayed values „D”:
a) D = „17.5”
According to formula from page 42:
Iout = (17.5-10.0) / (20.0-10.0) × 16 mA + 4 mA = 0.75 ·16 + 4 = 16 mA
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User manual - CONTROLLER PUR-94
Calculated Iout do not exceeds the output working range (3.8 - 21 mA).
b) D = „20.5”
According to formula from page 42:
Iout = (20.5-10.0) / (20.0-10.0) × 16 mA + 4 mA = 1.05 ·16 + 4 = 20.08 mA
Calculated Iout do not exceeds the output working range (3.8 - 21 mA).
c) D = „30.0”
According to formula from page 42:
Iout = (30.0-10.0) / (20.0-10.0) × 16 mA + 4 mA = 2 ·16 + 4 = 36 mA.
Calculated Iout exceeds the output working range (3 - 21 mA), so current output will generate
current equal to the upper border of range defined by parameter “Lo r” and “Hi r” (it means
21 mA).
Example 8: Connecting and preparing the system for the auto-tuning process
Let’s assume that we want to carry out the auto-tuning process of the PID-H controller’s
loop connected to an OC type output in the PULS mode. In such an arrangement the device is
to control the temperature of an oven (in a free state of 20° C) using a high power SSR relay,
and the feedback concerning the temperature is obtained using a Pt100 sensor.
230V
SSR
OC-type output
PUR-94
Measurement input
Pt100
Figure. 10.5 Example arrangement of connections for auto-tuning
Preparatory steps to launch the auto-tuning process:
a) Connect the system in accordance to the diagram in Figure. 10.5.
b) In the selected OC type output set:
parameter Sour as PidH,
parameter modE as PULS,
parameter Peri at 6.0,
c) Set the tYPE parameter (in the inPt menu) as Pt 1,
d) Set the setpoint to 120°C (the SEtP parameter in the CtrL menu),
e) Set the modE parameter (in the CtrL menu) as At-H,
f) Wait until the device carries out auto-tuning (at which time the display will blink),
g) Once the display stops blinking, the device automatically sets up in the PiD operating mode
(the modE parameter in the CtrL menu) and the calculated settings of the PID-H controller’s
loop will be stored in the appropriate parameters,
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User manual - CONTROLLER PUR-94
11. THE MODBUS PROTOCOL HANDLING
Transmission parameters: 1 start bit, 8 data bits, 1 or 2 stop bit (2 bits are send, 1 and 2 bits
are accepted when receive), no parity control
Baud rate:
selectable from: 1200 to 115200 bits/second
Transmission protocol:
MODBUS RTU compatible
The device parameters and display value are available via RS-485 interface, as HOLDINGtype registers (numeric values are given in U2 code) of Modbus RTU protocol. The registers
(or groups of the registers) can be read by 03h function, and wrote by 06h (single registers) or
10h (group of the registers) accordingly to Modbus RTU specification. Maximum group size for
03h and 10h functions can not exceeds 16 registers (for single frame).
i
The device interprets the broadcast messages, but then do not sends the answers.
11.1. LIST OF REGISTERS
Register
Write
Range
01h
No
-999 ÷ 9999
02h
No
The status of the measurement; 0h - data valid; A0h - top border of
0h, A0h, 60h,
the measurement range is exceeded; 60h - bottom border of the
C0h, 10h,
measurement range is exceeded; C0h - sensor failure; 10h - error
20h
of user characteristic; 20h - waiting for the first measure
03h
Yes
04h
05h1
60
0÷3
Register description
Measurement value (no decimal point)
“Pnt ” parameter in “InPt” menu (decimal point position)
0 - “ 0”; 1 - “ 0.0”; 2 - “ 0.00”; 3 - “0.000”
Yes
see descr.
State of the relays and alarm LED (binary format)
(1 - on, 0 - off): 00000000 000edcba
a - relay R1; b - relay R2; c - relay R3; d - relay R2; e - alarm LED;
If written, only a, b, c, d bits are important (others are ignored)
these bits allows user to control the relays via RS-485 interface
Yes
0h ÷ 1800h
State of active current output, expressed in 1/256 mA units – it
means that high byte express integer part, and low byte fractional
part of desired output current.
Yes
State of passive current output, expressed in 1/256 mA units – it
2CCh÷1800h means that high byte express integer part, and low byte fractional
part of desired output current.
Yes
0h ÷ 1600h
State of active voltage output, expressed in 1/512 V units – it means
that high byte express integer part, and low byte fractional part of
desired output voltage.
06h
No
-999 ÷ 9999
Peak (drop) value (no decimal point)
08h
No
0 ÷ 50
Temperature inside device housing expressed by 1°C
User manual - CONTROLLER PUR-94
Register
10h
Write
Yes
Range
0 ÷ 20
Register description
“tyPE” parameter in “InPt” menu (nominal input range):
0 - 0-20 mA range; 1 - 4-20 mA range; 2 - 0-5 V range;
3 - 1-5 V range; 4 - 0-10 V range; 5 - 2-10 V range;
6 - 0-60 mV range; 7 - 0-75 mV range; 8 - 0-100 mV range;
9 - 0-150 mV range; 10 - Pt-100; 11 - Pt-500; 12 - Pt-1000
13 - thermocouple input
15 - thermocouple input
17 - thermocouple input
19 - thermocouple input
K; 14 - thermocouple input S;
J; 16 - thermocouple input T;
N; 18 - thermocouple input R;
B; 20 - thermocouple input E;
“CHAr” parameter in “InPt” menu (characteristic type)
0 - linear ; 1 - square; 2 - square root; 3 - user defined
11h
Yes
0÷3
12h
Yes
0 ÷ 255
13h
Yes
0÷3
14h
Yes
-999 ÷ 9999
“Lo C” parameter in “InPt” menu, no decimal point included
15h
Yes
-999 ÷ 9999
“Hi C” parameter in “InPt” menu, no decimal point included
16h
Yes
0 ÷ 999
“Lo r” parameter in “InPt” menu, in 0.1%
17h
Yes
0 ÷ 199
“Hi r” parameter in “InPt” menu, in 0.1%
18h
Yes
-99 ÷ 99
“toFS” parameter in “InPt” menu (shift of measurement scale),
expressed by 0.1°C (for RTD input) or by 1.0°C (for TC input)
19h
Yes
0÷2
20h2
Yes
0 ÷ 199
Device address
21h
No
22DCh
Device identification code (ID)
22h3
Yes
0÷7
“bAud” parameter in “rS” menu (baud rate);
0 - 1200 baud; 1 - 2400 baud; 2 - 4800 baud; 3 - 9600 baud;
4 - 19200 baud; 5 - 38400 baud; 6 - 57600 baud; 7 - 115200 baud
23h4
Yes
0÷1
“mbAc” parameter in “rS” menu (permission to write registers via
RS-485 interface); 0 - write denied ; 1 - write allowed
“FiLt” parameter in “InPt” menu (time constant in seconds)
“Pnt ”parameter in “InPt” menu (the copy of 03h register, decimal
point position): 0 - “ 0”; 1 - “ 0.0”; 2 - “ 0.00”; 3 - “0.000”
“Conn” parameter in “InPt” menu (RTD input connection method):
0 - “4 in”; 1 - “3 in”; 2 - “2 in”
Parameters of “SECU” menu (binary format (0 - „oFF”, 1 - „on”):
bit 0 - “A r1” parameter; bit 1 - “A r2” parameter
bit 2 - “A r3” parameter; bit 3 - “A r4” parameter; bit 4 - “A Pid”
parameter;
24h
Yes
see descr.
25h
Yes
0÷5
“rESP” parameter in “rS” menu (additional response delay);
0 - no additional delay; 1 - ”10c” option; 2 - ”20c” option;
3 - ”50c” option; 4 - ”100c” option; 5 - ”200c” option;
27h
Yes
0 ÷ 99
“mbtO” parameter in “rS” menu (maximum delay between
received frames); 0 - no delay checking;
1 ÷ 99 - maximum delay expressed in seconds
28h
Yes
0÷1
“AL” parameter in “bEEP” menu: 0 - off; 1 - on
29h
Yes
0÷1
“R1” parameter in “bEEP” menu: 0 - off; 1 - on
2Ah
Yes
0÷1
“R2” parameter in “bEEP” menu: 0 - off; 1 - on
61
User manual - CONTROLLER PUR-94
Register
Write
Range
Register description
2Bh
Yes
0÷1
“R3” parameter in “bEEP” menu: 0 - off; 1 - on
2Ch
Yes
0÷1
“R4” parameter in “bEEP” menu: 0 - off; 1 - on
2Dh
Yes
1÷8
“bri” parameter (display brightness);
1 - the lowest brightness; 8 - the highest brightness
2Fh
Yes
0÷1
“Edit” parameter (numerical parameters edit mode);
0 - „dig” mode; 1 - „SLid” mode
30h
Yes
0÷3
31h
Yes
0÷5
32h
Yes
-999 ÷ 9999
“SEtP” parameter in “rEL1” menu, no decimal point included
33h
Yes
-999 ÷ 999
“HySt” parameter in “rEL1” menu, no decimal point included
34h
Yes
0 ÷ 999
“t on” parameter in “rEL1” menu, expressed in tenth of seconds or
tenth of minutes depend on “unit” parameter - register no. 36h)
35h
Yes
0 ÷ 999
“toFF” parameter in “rEL1” menu, expressed in tenth of seconds
or tenth of minutes depend on “unit” parameter - register no. 36h)
36h
Yes
0÷1
“unit” parameter in “rEL1” menu:
0 - seconds; 1 - minutes
37h
Yes
0÷2
“AL” parameter in “rEL1” menu (only when rEL1 is relay output): 0
- no changes; 1 - on; 2 - off
38h
Yes
-999 ÷ 9999
“SEt2” parameter in “rEL1” menu, no decimal point included
39h
Yes
-999 ÷ 9999
“InLo” parameter in “rEL1” menu, no decimal point included
3Ah
Yes
-999 ÷ 9999
“InHi” parameter in “rEL1” menu, no decimal point included
“Sour” parameter in “rEL1” menu:
0 - “InPU” option; 1 - “modb” option; 2 - “PidH” option; 3 - “PidC”
option;
“modE” parameter in “rEL1” menu:
0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode;
4 - “out” mode; 5 - “PULS” mode
3Bh
Yes
0 ÷ 9999
“PEri” parameter in “rEL1” menu, no decimal point included
3Ch
Yes
0 ÷ 9999
“H on” parameter in “rEL1” menu, no decimal point included
3Dh
Yes
0 ÷ 9999
“HoFF” parameter in “rEL1” menu, no decimal point included
3Eh
Yes
0÷1
“Acti” parameter in “AL” menu, (only when rEL1 is OC-type output):
0 - “noCH” option; 1 - “USdu” option;
3Fh
Yes
0 ÷ 1000
“duty” parameter in “AL” menu (only when rEL1 is OC-type output)
40h
Yes
0 ÷ 1000
Current OC type output fill factor expressed as a percentage without
the decimal point (only where rEL1 is the OC type output)
41h
Yes
-999 ÷ 9999
“OFFS” parameter in “rEL1” menu, no decimal point included
42h
Yes
0 ÷ 1000
“SEnS” parameter in“rEL1” menu, no decimal point included
43h
Yes
0÷3
“Sour” parameter in “rEL2” menu:
62
0 - “InPU” option; 1 - “modb” option; 2 - “PidH” option; 3 - “PidC”
option;
User manual - CONTROLLER PUR-94
Register
Write
Range
Register description
44h
Yes
0÷5
45h
Yes
-999 ÷ 9999
“SEtP” parameter in “rEL2” menu, no decimal point included
46h
Yes
-999 ÷ 999
“HySt” parameter in “rEL2” menu, no decimal point included
47h
Yes
0 ÷ 999
“t on” parameter in “rEL2” menu, expressed in tenth of seconds or
tenth of minutes depend on “unit” parameter - register no. 47h)
48h
Yes
0 ÷ 999
“toFF” parameter in “rEL2” menu, expressed in tenth of seconds
or tenth of minutes depend on “unit” parameter - register no. 47h)
49h
Yes
0÷1
“unit” parameter in “rEL2” menu:
0 - seconds; 1 - minutes
4Ah
Yes
0÷2
“AL” parameter in “rEL2” menu (only when rEL2 is relay output): 0
- no changes; 1 - on; 2 - off
4Bh
Yes
-999 ÷ 9999
“SEt2” parameter in “rEL2” menu, no decimal point included
4Ch
Yes
-999 ÷ 9999
“InLo” parameter in “rEL2” menu, no decimal point included
4Dh
Yes
-999 ÷ 9999
“InHi” parameter in “rEL2” menu, no decimal point included
4Eh
Yes
0 ÷ 9999
“PEri” parameter in “rEL2” menu, no decimal point included
4Fh
Yes
0 ÷ 9999
“H on” parameter in “rEL2” menu, no decimal point included
50h
Yes
0 ÷ 9999
“HoFF” parameter in “rEL2” menu, no decimal point included
51h
Yes
0÷1
“Acti” parameter in “AL” menu, (only when rEL2 is OC-type output):
0 - “noCH” option; 1 - “USdu” option;
52h
Yes
0 ÷ 1000
“duty” parameter in “AL” menu (only when rEL2 is OC-type output)
53h
Yes
0 ÷ 1000
Current OC type output fill factor expressed as a percentage without
the decimal point (only where rEL2 is the OC type output)
54h
Yes
-999 ÷ 9999
“OFFS” parameter in “rEL2” menu, no decimal point included
55h
Yes
0 ÷ 1000
“SEnS” parameter in“rEL2” menu, no decimal point included
56h
Yes
0÷3
57h
Yes
0÷5
58h
Yes
-999 ÷ 9999
“SEtP” parameter in “rEL3” menu, no decimal point included
59h
Yes
-999 ÷ 999
“HySt” parameter in “rEL3” menu, no decimal point included
5Ah
Yes
0 ÷ 999
“t on” parameter in “rEL3” menu, expressed in tenth of seconds or
tenth of minutes depend on “unit” parameter - register no. 58h)
5Bh
Yes
0 ÷ 999
“toFF” parameter in “rEL3” menu, expressed in tenth of seconds
or tenth of minutes depend on “unit” parameter - register no. 58h)
“modE” parameter in “rEL2” menu:
0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode;
4 - “out” mode; 5 - “PULS” mode
“Sour” parameter in “rEL3” menu:
0 - “InPU” option; 1 - “modb” option; 2 - “PidH” option; 3 - “PidC”
option;
“modE” parameter in “rEL3” menu:
0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode;
4 - “out” mode; 5 - “PULS” mode
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User manual - CONTROLLER PUR-94
Register
Write
Range
Register description
5Ch
Yes
0÷1
“unit” parameter in “rEL3” menu:
0 - seconds; 1 - minutes
5Dh
Yes
0÷2
“AL” parameter in “rEL3” menu (only when rEL3 is relay output): 0
- no changes; 1 - on; 2 - off
5Eh
Yes
-999 ÷ 9999
“SEt2” parameter in “rEL3” menu, no decimal point included
5Fh
Yes
-999 ÷ 9999
“InLo” parameter in “rEL3” menu, no decimal point included
60h
Yes
-999 ÷ 9999
“InHi” parameter in “rEL3” menu, no decimal point included
61h
Yes
0 ÷ 9999
“PEri” parameter in “rEL3” menu, no decimal point included
62h
Yes
0 ÷ 9999
“H on” parameter in “rEL3” menu, no decimal point included
63h
Yes
0 ÷ 9999
“HoFF” parameter in “rEL3” menu, no decimal point included
64h
Yes
0÷1
“Acti” parameter in “AL” menu, (only when rEL3 is OC-type output):
0 - “noCH” option; 1 - “USdu” option;
65h
Yes
0 ÷ 1000
“duty” parameter in “AL” menu (only when rEL3 is OC-type output)
66h
Yes
0 ÷ 1000
Current OC type output fill factor expressed as a percentage without
the decimal point (only where rEL3 is the OC type output)
67h
Yes
-999 ÷ 9999
“OFFS” parameter in “rEL3” menu, no decimal point included
68h
Yes
0 ÷ 1000
“SEnS” parameter in“rEL3” menu, no decimal point included
69h
Yes
0÷3
6Ah
Yes
0÷5
6Bh
Yes
-999 ÷ 9999
“SEtP” parameter in “rEL4” menu, no decimal point included
6Ch
Yes
-999 ÷ 999
“HySt” parameter in “rEL4” menu, no decimal point included
6Dh
Yes
0 ÷ 999
“t on” parameter in “rEL4” menu, expressed in tenth of seconds or
tenth of minutes depend on “unit” parameter - register no. 69h)
6Eh
Yes
0 ÷ 999
“toFF” parameter in “rEL4” menu, expressed in tenth of seconds
or tenth of minutes depend on “unit” parameter - register no. 69h)
6Fh
Yes
0÷1
“unit” parameter in “rEL4” menu:
0 - seconds; 1 - minutes
70h
Yes
0÷2
“AL” parameter in “rEL4” menu (only when rEL4 is relay output): 0
- no changes; 1 - on; 2 - off
71h
Yes
-999 ÷ 9999
“SEt2” parameter in “rEL4” menu, no decimal point included
72h
Yes
-999 ÷ 9999
“InLo” parameter in “rEL4” menu, no decimal point included
73h
Yes
-999 ÷ 9999
“InHi” parameter in “rEL4” menu, no decimal point included
74h
Yes
0 ÷ 9999
“PEri” parameter in “rEL4” menu, no decimal point included
75h
Yes
0 ÷ 9999
“H on” parameter in “rEL4” menu, no decimal point included
“Sour” parameter in “rEL4” menu:
64
0 - “InPU” option; 1 - “modb” option; 2 - “PidH” option; 3 - “PidC”
option;
“modE” parameter in “rEL4” menu:
0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode;
4 - “out” mode; 5 - “PULS” mode
User manual - CONTROLLER PUR-94
Register
Write
Range
Register description
76h
Yes
0 ÷ 9999
77h
Yes
0÷1
“Acti” parameter in “AL” menu, (only when rEL4 is OC-type output):
0 - “noCH” option; 1 - “USdu” option;
78h
Yes
0 ÷ 1000
“duty” parameter in “AL” menu (only when rEL4 is OC-type output)
79h
Yes
0 ÷ 1000
Current OC type output fill factor expressed as a percentage without
the decimal point (only where rEL4 is the OC type output)
7Ah
Yes
-999 ÷ 9999
“OFFS” parameter in “rEL4” menu, no decimal point included
7Bh
Yes
0 ÷ 1000
“SEnS” parameter in“rEL4” menu, no decimal point included
80h
Yes
0÷1
81h
Yes
0 ÷ 9999
“PEA” parameter in “HOLd” menu (minimum detectable change, no
decimal point included)
82h
Yes
0 ÷ 199
“timE” parameter in “HOLd” menu, maximum peaks' (or drops')
display time expressed in seconds
83h
Yes
0÷1
“HdiS” parameter in “HOLd” menu:
0 - “rEAL” mode ; 1 - “HOLd” mode
84h
Yes
0÷1
“H r1” parameter in “HOLd” menu :
0 - “rEAL” mode ; 1 - “HOLd” mode
85h
Yes
0÷1
“H r2” parameter in “HOLd” menu:
0 - “rEAL” mode ; 1 - “HOLd” mode
86h
Yes
0÷1
“H r3” parameter in “HOLd” menu:
0 - “rEAL” mode ; 1 - “HOLd” mode
87h
Yes
0÷1
“H r4” parameter in “HOLd” menu:
0 - “rEAL” mode ; 1 - “HOLd” mode
88h
Yes
0÷1
“HOUt” parameter in “HOLd” menu:
0 - “rEAL” mode ; 1 - “HOLd” mode
A0h5
Yes
-999 ÷ 1999
The value of „X” coordinate of point no. 1 of the user defined
characteristic, expressed in 0.1%
A1h5
Yes
-999 ÷ 9999
The value of „Y” coordinate of point no. 1 of the user defined
characteristic, no decimal point included
“HoFF” parameter in “rEL4” menu, no decimal point included
“modE” parameter in “HOLd” menu (type of detected changes):
0 - peaks; 1 - drops
Further pairs of „X” - „Y” coordinates of points no. 2 ÷ 19 of the
user defined characteristic
A2h5 ÷ C5h5
C6h5
Yes
-999 ÷ 1999
The value of „X” coordinate of point no. 20 of the user defined
characteristic, expressed in 0.1%
C7h5
Yes
-999 ÷ 9999
The value of „Y” coordinate of point no. 20 of the user defined
characteristic, no decimal point included
D0h
Tak
0÷3
“OSou” parameter in “OutP” menu:
0 - “InPU” option; 1 - “modb” option; 2 - “PidH” option; 3 - “PidC”
option
65
User manual - CONTROLLER PUR-94
Register
Write
Range
Register description
Yes
0÷3
“Omod” parameter in “OUtP” menu (active current output mode)
0 - current output disabled; 1 - current output enabled with 4÷20mA
mode; 2 - current output enabled with 0÷20mA mode;
Yes
0÷2
“Omod” parameter in “OUtP” menu (passive current output mode)
0 - current output disabled; 1 - current output enabled with 4÷20mA
mode;
Yes
0÷5
“Omod” parameter in “OUtP” menu (active voltege output mode)
0 - voltage output disabled; 1 - voltage output enabled with 0÷5V
mode; 2 - voltage output enabled with 1÷5V mode; 3 - voltage
output enabled with 0÷10V mode; 4 - voltage output enabled with
2÷10V mode;
D2h1
Yes
-999 ÷ 9999
“OUtL” parameter in “OUtP” menu, no decimal point included
D3h
Yes
-999 ÷ 9999
“OUtH” parameter in “OUtP” menu, no decimal point included
Yes
0 ÷ 999
“Lo r” parameter in “OUtP” menu, for active current output and
active voltage output, expressed in 0.1%
Yes
0 ÷ 299
“Lo r” parameter in “OUtP” menu for passive current output,
expressed in 0.1%
Yes
0 ÷ 199
“Hi r” parameter in “OUtP” menu for active and passive current
output, expressed in 0.1%
Yes
0 ÷ 99
“Hi r” parameter in “OUtP” menu for active voltage output,
expressed in 0.1%
Yes
0÷3
“AL” parameter in “OUtP” menu (active current output value on
critical exception): 0 - no change; 1 - 22.1 mA; 2 - 3.4 mA; 3 - 0 mA
Yes
0÷2
“AL” parameter in “OUtP” menu (passive current output value on
critical exception): 0 - no change; 1 - 22.1 mA; 2 - 3.4 mA
Yes
0÷5
D1h1
1
D4h1
D5h1
D6h1
“AL” parameter in “OUtP” menu (active voltage output value on
critical exception): 0 - no change; 1 - 11 V; 2 - 5.5; 3 - 1.2 V;
4 - 0.6 V; 5 - 0 V
66
“modE” parameter in“CtrL” menu:
0 - “oFF” option; 1 - opcja Pid” option; 2 - “At-F” option;
3 - opcja At-H” option; 4 - “At-C” option;
F0h
Yes
0÷4
F1h
Yes
-999 ÷ 9999
“SEtP” parameter in“CtrL” menu, no decimal point included
F2h
Yes
0 ÷ 9999
“P -H” parameter in“PArH” menu, no decimal point included
F3h
Yes
0 ÷ 9999
“tI-H” parameter in“PArH” menu, no decimal point included
F4h
Yes
0 ÷ 9999
“td-H” parameter in“PArH” menu, no decimal point included
F5h
Yes
-999 ÷ 9999
“OF-H” parameter in“PArH” menu, no decimal point included
F6h
Yes
0 ÷ 999
“Lo-H” parameter in“PArH” menu, no decimal point included
F7h
Yes
1 ÷ 1000
“Hi-H” parameter in“PArH” menu, no decimal point included
F8h
Yes
0 ÷ 9999
“P -C” parameter in“PArC” menu, no decimal point included
F9h
Yes
0 ÷ 9999
“tI-C” parameter in“PArC” menu, no decimal point included
User manual - CONTROLLER PUR-94
1
2
3
4
5
Register
Write
Range
Register description
FAh
Yes
0 ÷ 9999
“td-C” parameter in“PArC” menu, no decimal point included
OF-C” parameter in“PArC” menu, no decimal point included
FBh
Yes
-999 ÷ 9999
FCh
Yes
0 ÷ 999
“Lo-C” parameter in“PArC” menu, no decimal point included
FDh
Yes
1 ÷ 1000
“Hi-C” parameter in“PArC” menu, no decimal point included
FEh
Yes
0 ÷ 9999
“dEAd” parameter in“ConF” menu, no decimal point included
FFh
Yes
0 ÷ 9999
“StAr” parameter in“ConF” menu, no decimal point included
100h
Yes
0÷1
“dSrC” parameter in “ConF” menu:
0 - “Err” option; 1 - “LooP” option;
101h
Yes
0÷3
“InEr” parameter in “ConF” menu:
0 - “OFF” option; 1 - “HArd” option; 2 - “mEdi” option;
3 - “SoFt” option;
102h
Yes
0 ÷ 9999
103h
Yes
0÷2
104h
Yes
0 ÷ 9999
105h
No
-1000 ÷ 1000
“SLOP” parameter in “FuZL” menu, no decimal point included
“unit” parameter in “FuZL” menu:
0 - “SEC” option; 1 - “min” option; 2 - “hour” option;
“HySt” parameter in “FuZL” menu, no decimal point included
Value of regulator's output (in percentage)
- these registers are active only if device is equipped with current or voltage output
- after writing to register no 20h the device responds with an “old” address in the message.
- after writing to register no 22h the device responds with the new baud rate.
- the value of the “mbAc” parameter is also connected to write to this register, so it is possible to block a writes, but
impossible to unblock writes via RS-485 interface, The unblocking of the writes is possible from menu level only.
- the pairs of „X -Y” coordinates may be defined for any free point. The pair is “free” (it means that particular point is
not defined) if „X” coordinate of this point is equal 8000h. After writing both X and Y coordinate the point is defined
and used in calculation of result. The coordinates of any point can be changed at any time.
11.2. TRANSMISSION ERRORS DESCRIPTION
If an error occurs while write or read of single register, then the device sends an error
code according to Modbus RTU specifications (example message no 1).
Error codes:
01h - illegal function (only functions 03h, 06h and 10h are available),
02h - illegal register address
03h - illegal data value
08h - no write permission ( see: “mbAc” parameter)
A0h - exceed of upper border of input range
60h - exceed of lower border of input range
A0h and 60h codes can appear only during reg. 01h is reading by 03h function (read of
a single register).
67
User manual - CONTROLLER PUR-94
11.3. EXAMPLES OF QUERY/ANSWER FRAMES
Examples apply for device with address 1. All values are represent hexadecimal.
Field description:
ADDR
Device address on modbus network
FUNC
Function code
REG H,L
Starting address (address of first register to read/write, Hi and Lo byte)
COUNT H,L
No. of registers to read/write (Hi and Lo byte)
BYTE C
Data byte count in answer frame
DATA H,L
Data byte (Hi and Lo byte)
CRC L,H
CRC error check (Hi and Lo byte)
1. Read of the displayed value (measurement), PUR-94 device address = 01h:
ADDR
FUNC
01
03
REG H,L
00
COUNT H,L
01
00
CRC L,H
01
D5
CA
a) The answer (we assume that the measure result is not out of range):
ADDR
FUNC
BYTE C
01
03
02
DATA H,L
00
CRC L,H
FF
F8
04
DATA H, L - displayed value = 255, no decimal point.
Decimal point position can be read from reg. 03h.
b) The answer (if an error occur):
ADDR FUNC
01
ERROR
83
CRC L,H
60
41
18
ERROR - error code = 60h, bottom border of the measurement range is exceeded
2. Read of device ID code
ADDR
FUNC
REG H,L
01
03
00
ADDR
FUNC
BYTE C
01
03
02
COUNT H,L
21
00
CRC L,H
01
D4
00
The answer:
DATA H,L
22
DATA - identification code (22DCh)
68
DC
CRC L,H
18
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User manual - CONTROLLER PUR-94
3. Change of the device address from 1 to 2 (write to reg. 20h)
ADDR
FUNC
01
06
REG H,L
00
DATA H,L
20
00
02
CRC L,H
09
C1
DATA H - 0
DATA L - new device address (2)
The answer (the same as the message):
ADDR
FUNC
01
06
REG H,L
00
DATA H,L
20
00
02
CRC L,H
09
C1
4. Change of baud rate of all devices connected to the net (BROADCAST message).
ADDR
FUNC
00
06
REG H,L
00
COUNT H,L
22
00
04
CRC L,H
29
D2
DATA H - 0
DATA L - 4, new baud rate 19200 baud
i
Device do not reply to BROADCAST-type messages.
5. Read of the registers 1, 2 and 3 in one message (example of reading a number of
registries in one frame):
ADDR
FUNC
01
03
REG H,L
00
COUNT L
COUNT H,L
01
00
03
CRC L,H
54
0B
- the count of being read registers (max.16)
The answer:
ADDR
FUNC
01
03
DATA H1, L1
DATA H2, L2
DATA H3, L3
i
BYTE C DATA H1,L1
06
00
0A
DATA H2,L2
00
00
DATA H3,L3
00
01
CRC L,H
78
B4
- reg. 01h (10 - displayed value ”1.0”),
- reg. 02h (0 - no errors),
- reg. 03h (1 - decimal point position ” 0.0”).
There is no full implementation of the Modbus Protocol in the device. The
functions presented above are available only.
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User manual - CONTROLLER PUR-94
12. DEFAULT AND USER'S SETTINGS LIST
Parameter
Description
Default value
User's value
Desc.
page
Parameters of relay R1 operation (“rEL1” menu)
Sour
Relay R1 signal source
modE
Operation mode of relay R1
InPU
35
on
35
SEtP
SEt2
Relay R1 threshold
20.0
35
Relay R1 second threshold
40.0
35
HYSt
Hysteresis of relay R1
0.0
36
t on
Turn on delay of relay R1
0.0
36
toFF
Turn off delay of relay R1
0.0
36
unit
Unit of “t on”, “toFF” parameters of relay R1
SEC
36
InLo
The lower limit of the PWM range of relay R1
0.0
37
InHi
The upper limit of the PWM range of relay R1
100.0
37
PEri
Relay R1 output signal period
1.0
37
H on
Low state minimal time of relay R1 PWM signal
0.0
37
HoFF
High state minimal time of relay R1 PWM signal
0.0
37
AL
Reaction for critical situation of relay R1
oFF
37
OFFS
Relay R1 output offset
0.0
36
SEnS
Relay R1 output sensitivity
100.0
36
Parameters of relay R2 operation (“rEL2” menu)
Sour
Relay R2 signal source
modE
Operation mode of relay R2
InPU
35
on
35
SEtP
SEt2
Relay R2 threshold
20.0
35
Relay R2 second threshold
40.0
35
HYSt
Hysteresis of relay R2
0.0
36
t on
Turn on delay of relay R2
0.0
36
toFF
Turn off delay of relay R2
0.0
36
unit
Unit of “t on”, “toFF” parameters of relay R2
SEC
36
InLo
The lower limit of the PWM range of relay R2
0.0
37
InHi
The upper limit of the PWM range of relay R2
100.0
37
PEri
Relay R2 output signal period
1.0
37
H on
Low state minimal time of relay R2 PWM signal
0.0
37
HoFF
High state minimal time of relay R2 PWM signal
0.0
37
AL
Reaction for critical situation of relay R2
oFF
37
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User manual - CONTROLLER PUR-94
Parameter
Description
OFFS
Relay R2 output offset
SEnS
Relay R2 output sensitivity
Default value
User's value
Desc.
page
0.0
36
100.0
36
Parameters of relay R3 operation (“rEL3” menu)
Sour
Relay R3 signal source
modE
Operation mode of relay R3
InPU
35
on
35
SEtP
Relay R3 threshold
20.0
35
SEt2
Relay R3 second threshold
40.0
35
HYSt
Hysteresis of relay R3
0.0
36
t on
Turn on delay of relay R3
0.0
36
toFF
Turn off delay of relay R3
0.0
36
unit
Unit of “t on”, “toFF” parameters of relay R3
SEC
36
InLo
The lower limit of the PWM range of relay R3
0.0
37
InHi
The upper limit of the PWM range of relay R3
100.0
37
PEri
Relay R3 output signal period
1.0
37
H on
Low state minimal time of relay R3 PWM signal
0.0
37
HoFF
High state minimal time of relay R3 PWM signal
0.0
37
AL
Reaction for critical situation of relay R3
oFF
37
OFFS
Relay R3 output offset
0.0
36
SEnS
Relay R3 output sensitivity
100.0
36
Parameters of relay R4 operation (“rEL4” menu)
Sour
Relay R4 signal source
modE
Operation mode of relay R4
InPU
35
on
35
SEtP
Relay R4 threshold
20.0
35
SEt2
Relay R4 second threshold
40.0
35
HYSt
Hysteresis of relay R4
0.0
36
t on
Turn on delay of relay R4
0.0
36
toFF
Turn off delay of relay R4
0.0
36
unit
Unit of “t on”, “toFF” parameters of relay R4
SEC
36
InLo
The lower limit of the PWM range of relay R4
0.0
37
InHi
The upper limit of the PWM range of relay R4
100.0
37
PEri
Relay R4 output signal period
1.0
37
H on
Low state minimal time of relay R4 PWM signal
0.0
37
HoFF
High state minimal time of relay R4 PWM signal
0.0
37
AL
Reaction for critical situation of relay R4
oFF
37
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User manual - CONTROLLER PUR-94
Parameter
Description
OFFS
Relay R4 output offset
SEnS
Relay R4 output sensitivity
Default value
User's value
Desc.
page
0.0
36
100.0
36
Activation of acoustic signal (menu “bEEP”)
AL
Activation of acoustic signal by critical situation
oFF
38
r1
Activation of acoustic signal by relay R1
oFF
38
r2
Activation of acoustic signal by relay R2
oFF
38
r3
Activation of acoustic signal by relay R3
oFF
38
r4
Activation of acoustic signal by relay R4
oFF
38
Configuration of measurement input (“inPt” menu)
tYPE
Input mode
„4-20”
38
Conn
Connection method
„4-in”
39
FiLt
Filtering time constant (in seconds)
0
39
toFS
Shifting of measurement scale
0.0
39
CHAr
Conversion characteristic mode
Lin
39
Pnt
Decimal point position
0.0
39
Lo C
Minimum displayed value (for nominal range)
000.0
39
Hi C
Maximum displayed value (for nominal range)
100.0
39
Lo r
Extension of the bottom of the nominal input range
5.0 (%)
40
Hi r
Extension of the top of the nominal input range
5.0 (%)
40
Active current output configuration (“OUtP” menu)
OSou
Active current output signal source
Omod
Active current output mode
OUtL
Display value for 0 mA or 4 mA current output
OUtH
Display value for 20 mA current output
Lo r
Extension of the bottom of the nominal output
range
Hi r
Extension of the top of the nominal output range
AL
Current output value on critical exception
„InPU”
41
„0-20” (mA)
42
0.0
42
100.0
42
5.0 (%)
42
5.0 (%)
42
22.1 (mA)
43
Passive current output configuration (“OUtP” menu)
OSou
Passive current output signal source
Omod
Passive current output mode
OUtL
OUtH
72
„InPU”
41
„4-20” (mA)
42
Display value for 4 mA current output
0.0
42
Display value for 20 mA current output
100.0
42
User manual - CONTROLLER PUR-94
Parameter
Description
Lo r
Extension of the bottom of the nominal output
range
Hi r
Extension of the top of the nominal output range
AL
Current output value on critical exception
Default value
5.0 (%)
User's value
Desc.
page
42
5.0 (%)
42
22.1 (mA)
43
Active voltage output configuration (“OUtP” menu)
OSou
Active voltage output signal source
Omod
Active voltage output mode
„InPU”
41
„0-10” (V)
42
OUtL
Display value for 0 V, 1 V or 2 V voltage output
0.0
42
OUtH
Display value for 5 V or 10 V voltage output
100.0
42
Lo r
Extension of the bottom of the nominal output
range
5.0 (%)
Hi r
Extension of the top of the nominal output range
5.0 (%)
42
AL
Voltage output value on critical exception
11.0 (V)
43
modE
Operation mode
oFF
44
SetP
Regulators setpoint
0.0
44
42
PID regulators configuration (“CtrL” menu)
PID-H regulator configuration (“ParH” menu)
P -H
proportional gain factor P of PID-H regulator
44
0.0
44
tI-H
integral gain factor I of PID-H regulator
0.0
44
td-H
derivative gain factor D of PID-H regulator
0.0
44
0.0
44
OF-H
Offset of PID-H regulator
Lo-H
The lower characteristic limit of PID-H
regulator
0.0
Hi-H
The upper characteristic limit of PID-H
regulator
100.0
PID-C regulator configuration (“ParC” menu)
P -C
tI-c
td-c
OF-C
44
44
0.0
44
integral gain factor I of PID-C regulator
0.0
44
derivative gain factor D of PID-C regulator
0.0
44
0.0
44
proportional gain factor P of PID-C regulator
Offset of PID-C regulator
Lo-C
The lower characteristic limit of PID-C
regulator
0.0
Hi-C
The upper characteristic limit of PID-C
regulator
100.0
PID regulators configuration (“ConF” menu)
dEAd
44
Dead zone
0.0
44
44
45
45
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User manual - CONTROLLER PUR-94
Parameter
Description
Default value
User's value
Desc.
page
StAr
Start state of the regulators
0.0
45
dSrC
Feedback of the regulators
LooP
45
InEr
Inertial block
OFF
45
SLOP
Incline of the characteristics of the fuzzy logic
block. FuZL menu parameter
unit
Time unit of incline of the characteristics of the
fuzzy logic block. FuZL menu parameter
SEC
HySt
Hysteresis of incline of the characteristics of the
fuzzy logic block. FuZL menu parameter
0.0
PID regulators configuration (“FuZL” menu)
0.0
46
46
46
46
Display parameters
bri
Display brightness
bri6
47
Configuration of peaks detection function (“HOLd” menu)
modE
Kind of detected changes
norm
47
PEA
Minimum detected change
0.0
47
timE
Maximum time of peak displaying
0.0
47
HdiS
The type of displayed value
HOLd
47
H r1
Source of relay R1, and LED R1 control
rEAL
48
H r2
Source of relay R2, and LED R2 control
rEAL
48
H r3
Source of relay R3, and LED R3 control
rEAL
48
H r4
Source of relay R4, and LED R4 control
rEAL
48
HOUt
Source of current output control
rEAL
48
A r1
Permission to changes of relay R1 threshold
without of the user password knowledge
on
A r2
Permission to changes of relay R2 threshold
without of the user password knowledge
on
A r3
Permission to changes of relay R3 threshold
without of the user password knowledge
on
A r4
Permission to changes of relay R4 threshold
without of the user password knowledge
on
APid
Permission to changes of regulator's setpoint
without of the user password knowledge
on
Settings of access to the configuration parameters (“SECu” menu)
48
48
48
48
48
RS-485 interface configuration (menu “rS”)
Addr
Device address
0
48
bAud
Baud rate
9.6
48
mbAc
Permission to changes of configuration registers
on
48
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User manual - CONTROLLER PUR-94
Parameter
Description
mbtO
Maximum delay between received messages
rESP
Additional delay of answer transmission
Default value
User's value
Desc.
page
0
49
Std
49
Configuration of numerical parameters edition
Edit
Numerical parameters edit mode
dig
49
75
SIMEX Sp. z o.o.
ul. Wielopole 11
80-556 Gdańsk
Poland
tel.: (+48 58) 762-07-77
fax: (+48 58) 762-07-70
http://www.simex.pl
e-mail: [email protected]
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