Datakom DPR-145 User manual

DPR-145 User Manual V-3.0 (14.09.2016)
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DPR-145
TEMPERATURE
PROTECTION RELAY
▪PT100 INPUTS: 4
▪RELAY OUTPUTS: 4
▪RS-485 MODBUS PORT
▪UNIVERSAL SUPPLY
DPR-145 is a precision unit designed for the
temperature protection of dry type or resin filled
MV transformers. The unit offers a high degree of
protection against electromagnetic disturbances.
The unit has 4 temperature inputs of PT100 type.
Three of them are used for the transformer
protection. The fourth input may be used as core
temperature protection or ambient temperature
monitoring.
Alarm and trip levels of the unit are independently
adjustable for first 3 sensors and the fourth
sensor input.
Alarm levels are adjusted using the program
mode. If no operation is performed, then the unit
will exit program mode in 3 minutes.
The unit offers a cable compensation function in
order to prevent long cables from impairing the
measurement precision.
The unit has 4 dry contact relay outputs rated 6A.
FAN: provides cooler fan control
TRIP: high temperature failure relay
ALARM: pre-alarm relay
FAULT: sensor or internal failure indicator
The unit offers an automatic self test feature. The
self test consists on the verification of sensor
inputs and internal memory integrity.
The standard isolated RS-485 MODBUS RTU
communication port is not affected by ground
potential differences and allows safe transfer of
information to remote management and
automation systems.
The supply input is isolated from sensor
connections.
1 degrees C measurement precision
4 x PT100 analog inputs
Allows cable length compensation
Automatic detection of sensor failures
Automatic and manual self test
4 x relay outputs, 5A/250Vac
Fully isolated RS-485 serial port
MODBUS-RTU communication
Recording of maximum temperatures
Front panel programmable
2 alarm thresholds for channels 1-2-3
2 alarm thresholds for channel 4
Easy to read, 3 digit 14mm led display
Supply voltage range: 19-400VDC (85-305VAC)
Reduced panel depth, easy to install
Wide operating temperature range, -20 to +70°C
Sealed front panel (IP65 with gasket)
2 part connection system
DESCRIPTION
FEATURES

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•Electrical equipment should be installed only by qualified
specialist. No responsibility is assumed by the manufacturer or
any of its subsidiaries for any consequences resulting from the
non-compliance to these instructions.
•Check the unit for cracks and damages due to transportation. Do
not install damaged equipment.
•Do not open the unit. There is no serviceable parts inside.
Warranty voids if the unit is open.
•Fuse must be connected to the power supply input.
•Fuses must be of fast type with a maximum rating of 6A.
•Disconnect all power before working on equipment.
•When the unit is connected to the network do not touch
terminals.
•Any electrical parameter applied to the device must be in the
range specified in the user manual.
•Do not try to clean the device with solvent or the like. Only clean
with a dry cloth.
•Verify correct terminal connections before applying power.
•Only for front panel mounting.
SAFETY NOTICE
WARNING
Failure to follow below instructions may
result in death or serious injury.

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Section
1. INSTALLATION
1.1. FRONT / REAR PANELS
1.2. MECHANICAL INSTALLATION
1.3. ELECTRICAL INSTALLATION
2. PUSHBUTTON FUNCTIONS
3. DISPLAYS
3.1. MODES OF OPERATION
4. ALARMS
4.1. ALARM MENU
5. PROGRAMMING
5.1. ENTERING THE PROGRAM MODE
5.2. LAMP TEST
5.3. RELAY TEST
5.4. MODIFYING PROGRAM PARAMETERS
5.5. PROGRAM PARAMETER LIST
6. MODBUS COMMUNICATIONS
6.1. DESCRIPTION
6.2. PROGRAM PARAMETERS
6.3. COMMANDS
6.4. ALARM BITS
6.5. SENSOR DATA
7. TECHNICAL SPECIFICATIONS
TABLE OF CONTENTS

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Before installation:
•Read the user manual carefully, determine the correct connection diagram.
•Remove all connectors and mounting brackets from the unit, then pass the unit through
the mounting opening.
•Put mounting brackets and tighten. Do not tighten too much, this can brake the
enclosure. Spring type brackets do not require tightening.
•Make electrical connections with plugs removed from sockets, then place plugs to their
sockets. Otherwise sockets may get damaged.
•Make sure not overloading relay outputs. Use additional contactors if required.
Below conditions may damage the device:
•Incorrect connections.
•Incorrect power supply voltage.
•Voltage at measuring terminals beyond specified range.
•Current at measuring terminals beyond specified range.
•Overload or short circuit at relay outputs
Below conditions may cause abnormal operation:
•Power supply voltage below minimum acceptable level.
1. INSTALLATION

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Panel Cutout Required Panel Depth
1.1 FRONT / REAR PANELS
1.2 MECHANICAL INSTALLATION

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Although the unit is protected against electromagnetic disturbance, excessive disturbance
can affect the operation, measurement precision and data communication quality.
•ALWAYS remove plug connectors when inserting wires with a screwdriver.
•Fuse must be connected to the power supply input, in close proximity of the unit.
•Fuses must be of fast type with a maximum rating of 6A.
•Use cables of appropriate temperature range.
•Use adequate cable section, at least 0.75mm2 (AWG18).
•For the RS-485 connection, use appropriate shielded twisted wire cable.
Communication quality will depend highly on the cable used.
1.3 ELECTRICAL INSTALLATION
Do not install the unit close to high electromagnetic
noise emitting devices like contactors, high current
busbars, switchmode power supplies and the like.

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Programming and measuring screens are opened using 3 pushbuttons on the front panel.
PUSHBUTTON
FUNCTION
Switched between operating modes.
IF HELD PRESSED DURING 5 SEC:
Switches to the Alarm menu. (Trip, Fault and Alarm
messages displayed)
Switch to the previous channel or
increase related value (program mode)
Switch to the next channel or
decrease related value (program mode)
IF HELD PRESSED DURING 5 SEC:
“” will be displayed and all Trip, Fault and Alalrm
messages will be deleted.
IF HELD PRESSED DURING 5 SEC:
“” will be displayed and maximum temperature values
for each channel will be deleted.
IF HELD PRESSED TOGETHER DURING 5 SEC:
Enters/exits PROGRAM mode.
* NO KEY PRESSED DURING 3 MINUTES:
Resumes to last operating mode.
2. PUSHBUTTON FUNCTIONS

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SELECTED CHANNEL LEDS: indicates
the related channel to alarm or
information on display.
MOD LEDS: indicated the current mode
of operation.
ALARM LEDS: indicates the type of
alarm if any.
TEST LED: turns on during lamp test or
relay test.
PPROGRAM LED: turns on in program
mode.
The unit has 4 operating modes: SCAN, AUTO, MAN, MAX.
Every depression of the MODE button switches the unit to the next operating mode.
Related mode led will turn on. Channel leds on the right side (1,2,3,4) indicate the
related channel number.
•SCAN: Displays channel temperatures, switches to the next channel every 5
seconds.
•AUTO: Displays the temperature of the highest channel.
•MAN: Displays the temperature of the selected channel. Channels may be
scrolled with and pushbuttons.
•MAX: Displays the maximum recorded temperature of the selected channel.
Channels may be scrolled with and pushbuttons.
NOTE: If any of or pushbuttons is depressed in SCAN or AUTO modes, then
the unit will automatically switch to the MANUAL mode. If no pushbutton is depressed
during 30 minutes, it will resume previous mode.
3. DISPLAYS
3.1 MODES OF OPERATION
Selected
Channel Leds
Alarm Leds
Mod Leds
Test Led
Program Led

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The unit continuously monitors various abnormal conditions during operation.
Programmable alarm limits are provided for every measured value.
If any fault condition occurs, the related alarm led (TRIP, FAULT or ALARM) turns on,
alarm code is displayed, the alarm relay operates and the alarm code is added to the
alarm menu.
Even if the alarm goes off, the related alarm led will stay on but the relay output will be
deactivated. By depressing the MODE pushbutton, alarm display will turn off and normal
operating mode will be resumed.
ALARM CODE
DESCRIPTION
SHORT CIRCUIT ()
Indicates a short circuit on the related channel. The FAULT
led and the related channel led turns on. Cables should be
checked.
OPEN CIRCUIT ()
Indicates a missing connection in the related channel. The
FAULT led and the related channel led turns on. Sensor
connections should be checked.
HIGH TEMPERATURE ALARM ()
Occurs if the temperature goes over the adjusted Alarm limit.
The ALARM led and the related channel led turns on and the
alarm relay operates.
HIGH TEMPERATURE TRIP ()
Occurs if the temperature goes over the adjusted Trip limit.
The TRIP led and the related channel led turns on and the
trip relay operates.
4. ALARMS

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PUSHBUTTON
OPERATION
DISPLAY
In order to enter the Alarm menu, the
MODE pushbutton should be held
pressed during 5 seconds in SCAN,
AUTO, MAN or MAX modes.
The related channel led and the ALARM
led of the last occurres alarm will turn
on. The alarm code will be displayed.
Different alarm types (fault, trip, alarm)
may be scrolled with the MODE
pushbutton.
If the related type of alarm has not
occurred on any channel, then (---) wil
be displayed.
If the same alarm type occurred on more
than one channel, alarm messages may
be scrolled with up/down arrow
pushbuttons.
In order to exit alarm menu, hold
pressed the MODE button during 5
seconds. The previous operating mode
will be resumed.
4.1 ALARM MENU

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In order to provide the maximum flexibility of use, the unit features various
programmable parameters.
Parameters are recorded in a non-volatile memory and are not affected by power
failures.
Relay testing is also performed through program mode.
PUSHBUTTON
OPERATION
DISPLAY
In order to enter the PROGRAM
mode, hold pressed both up/down
arrow pushbuttons for 5 seconds.
PGM will be displayed.
Every depression to the MODE
button will switch to the next
parameter. Related parameter
name is displayed.
When the name of the parameter
to be modified is displayed, hold
pressed the MODE button for 5
seconds. The value of the
parameter will be displayed.
Modify and adjust the value with
up/down arrow pushbuttons.
PUSHBUTTON
OPERATION
DISPLAY
In order to exit program mode,
hold pressed both up/down arrow
pushbuttons during 5 seconds.
5. PROGRAMMING
5.1 ENTERING THE PROGRAM MODE
If no pushbutton is depressed during 3 minutes, the
PROGRAM mode will be automatically terminated.

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PUSHBUTTON
OPERATION
DISPLAY
The required relay to be tested is
selected with MODE button. Trip (),
Fault(), Alarm() or Fan() can
be selected.
When the relay name is on display, hold
MODE button pressed during 5
seconds. The test screen of this relat
will open. The initial value of “0” is
displayed.
Arrow up button activates the relay
output and displays “1” on the screen.
Arrow down button deactivates the relay
output and displays “0” on the screen.
Mode button will switch to next relay or
parameter display.

5.2 LAMP TEST
When exiting the PROGRAM mode, the unit makes a LAMP
TEST during 5 seconds.
During LAMP TEST all leds will turn on. At the end of 5
seconds or if MODE button is depressed the LAMP TEST is
terminated.
If no pushbutton is depressed during 3 minutes, the
PROGRAM mode will be automatically terminated.
In this case LAMP TEST is not performed.
5.3 RELAY TEST
Exiting the relay test display will cause the relay resume
normal operation.

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TUŞ
İŞLEM
EKRAN
The parameter to be modified is
selected with MODE button.
When the parameter name is on
display, hold the MENU button
pressed during 5 seconds. The
parameter value will be displayed.
Adjust the parameter using up/down
arrow buttons.
In order to increase/decrease faster
you can hold arrow buttons pressed.
When MODE button is pressed, the
parameter value is recorded and the
next parameter name is displayed.

DISPLAY
DESCRIPTION
MIN
MAX
PT100 CABLE SECTION ()
PT100 cable section in mm2.
The factory set value is 0.5mm2.
0.10
9.99
PT100 CABLE LENGTH ()
PT100 cable length in meters (m).
The factory set value is 0m.
0
999
TRIP RELAY TEST ()
Used to test the TRIP relay. The value of
“1” activates the relay. The value of “0”
deactivates it.
0
1
5.4 MODIFYING PROGRAM PARAMETERS
5.5 PROGRAM PARAMETER LIST

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DISPLAY
DESCRIPTION
MIN
MAX
FAULT RELAY TEST ()
Used to test the FAULT relay. The value
of “1” activates the relay. The value of
“0” deactivates it.
0
1
ALARM RELAY TEST ()
Used to test the ALARM relay. The value
of “1” activates the relay. The value of
“0” deactivates it.
0
1
FAN RELAYE TEST ()
Used to test the FAN relay. The value of
“1” activates the relay. The value of “0”
deactivates it.
0
1
ALARM PARAMETER ()
Adjusts High Temperature Alarm limit
values of each channel.
0
295
TRIP PARAMETER ()
Adjusts High Temperature Trip values of
channels.
5
300
FAN CHANNEL PARAMETER ()
This parameter defines from which
channels the fan will operate.
0
15
0: none
1: channel_1
2: channel_2
3: channel_1+2
4: channel_3
5: channel_1+3
6: channel_2+3
7: channel_1+2+3
8: channel_4
9: channel_1+4
10: channel_2+4
11: channel_1+2+4
12: channel_3+4
13: channel_1+3+4
14: channel_2+3+4
15: channel_1+2+3+4
FAN ON PARAMETER ()
Adjusts Fan Turn ON Temperature
5
300

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DISPLAY
DESCRIPTION
MIN
MAX
FAN OFF PARAMETER ()
Adjusts Fan Turn OFF Temperature.
0
295
ALARM ENABLE PARAMETER
()
0: No alarm is generated from this
channel
1: if the temperature read from this
channel is over Alx limit, then an alarm is
generated.
0
1
RS-485 DATA RATE: (bdr)
0: 2400 baud 5: 28800 baud
1: 4800 baud 6: 38400 baud
2: 9600 baud 7: 56000 baud
3: 14400 baud 8: 57600 baud
4: 19200 baud 9: 115200 baud
0
9
MODBUS NODE ADDRESS (nod)
This parameter defines the address of
the unit in a Modbus network. Each
device in the same network must have a
different address.
0
255
For any channel, the difference between Alarm and Trip
temperatures cannot be less than 5 degrees C and the Trip
temperature is always higher than Alarm temperature.
The same way, the difference between Fan Turn ON and Turn
OFF parameters cannot be less than 5 degrees C and Fan
Turn ON is always higher than Fan Turn OFF.

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The unit offers serial data communication port allowing it to be integrated in automation
systems.
The serial port is of RS-485 MODBUS-RTU standard. It is fully isolated from power
supply and measurement terminals for failure-free operation under harsh industrial
conditions.
The MODBUS properties of the unit are:
-Data transfer mode: RTU
-Serial data: 9600 bps, 8 bit data, no parity, 1 bit stop
-The answer to an incoming message is sent with a minimum of 4.3ms delay after
message reception.
Each register consists of 2 bytes (16 bits). Larger data structure contain multiple
registers.
Detailed description about the MODBUS protocol is found in the document “Modicon
Modbus Protocol Reference Guide”.This document may be downloaded at:
www.modbus.org/docs/PI_MBUS_300.pdf
Supported functions:
-Function 3 (Read multiple registers)
-Function 6 (Write single register)
-Function 16 (Write multiple registers)
Error codes
Only 3 error codes are used:
01: illegal function code
02: illegal address
10: write protection (attempt to write a read_only register)
Data types
Each register consists of 16 bits (2 bytes)
If the data type is a byte, only the low byte will contain valid data. High byte is don’t care.
For data type longer than 16 bits, consecutive registers are used. The least significant
register comes first.
6. MODBUS COMMUNICATION
6.1 DESCRIPTION

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12 parameters are available in total. Parameter values may be modified with Function 10
(Write Multiple Registers). All values should be sent at once.
ADDRESS
NAME
DESCRIPTION
LENGTH
R/W
TYPE
X
0
Alarm 1
Channel 1 Alarm temperature (°C)
16 BIT
R/W
unsigned
word
1
1
Alarm 2
Channel 2 Alarm temperature (°C)
16 BIT
R/W
unsigned
word
1
2
Alarm 3
Channel 3 Alarm temperature (°C)
16 BIT
R/W
unsigned
word
1
3
Alarm 4
Channel 4 Alarm temperature (°C)
16 BIT
R/W
unsigned
word
1
4
Trip 1
Channel 1 Trip temperature (°C)
16 BIT
R/W
unsigned
word
1
5
Trip 2
Channel 2 Trip temperature (°C)
16 BIT
R/W
unsigned
word
1
6
Trip 3
Channel 3 Trip temperature (°C)
16 BIT
R/W
unsigned
word
1
7
Trip 4
Channel 4 Trip temperature (°C)
16 BIT
R/W
unsigned
word
1
8
Fan
Channel
Fan relay channel selection
16 BIT
R/W
unsigned
word
1
9
Fan ON
Fan Turn On Temperature (°C)
16 BIT
R/W
unsigned
word
1
10
Fan OFF
Fan Turn Off Temperature (°C)
16 BIT
R/W
unsigned
word
1
11
Cable
Lenght
Cable Length (m)
16 BIT
R/W
unsigned
word
1
12
Cable
Section
Cable Section(mm2)
16 BIT
R/W
unsigned
word
0.01
13
Channel_1
Alarm
Alarm enable parameter of the
related channel
16 BIT
R/W
unsigned
word
1
14
Channel_2
Alarm
Alarm enable parameter of the
related channel
16 BIT
R/W
unsigned
word
1
15
Channel_3
Alarm
Alarm enable parameter of the
related channel
16 BIT
R/W
unsigned
word
1
16
Channel_4
Alarm
Alarm enable parameter of the
related channel
16 BIT
R/W
unsigned
word
1
17
Baud Rate
RS-485 data rate
16 BIT
R/W
unsigned
word
1
18
Modbus
Address
Modbus address of the device
16 BIT
R/W
unsigned
word
1
6.2 PROGRAM PARAMETERS

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Commands should be sent with Function 6 (Write Single Register).
ADDRESS
VALUE
R/W
DESCRIPTION
16384
1
W-O
Reset Maximum Temperatures
16385
1
W-O
Reset all Alarms
16386
-
W-O
Arrow Down pushbutton
16387
-
W-O
Arrow Up pushbutton
16388
-
W-O
MODE pushbutton
16389
-
W-O
Arrow Down pushbutton long press
16390
-
W-O
Arrow Up pushbutton long press
16391
-
W-O
MODE pushbutton long press
16392
-
W-O
PROGRAM pushbutton long press
MODBUS Warning Record are contains 20 bits in 3 registers.
ADDRESS
BIT
R/W
DESCRIPTION
20488
0
R-O
Alarm Relay Status
1
R-O
Trip Relay Status
2
R-O
Fan Relay Status
3
R-O
Fault Relay Status
4-15
R-O
Not used
20489
0
R-O
Channel 1 Alarm
1
R-O
Channel 2 Alarm
2
R-O
Channel 3 Alarm
3
R-O
Channel 4 Alarm
4
R-O
Channel 1 Trip
5
R-O
Channel 2 Trip
6
R-O
Channel 3 Trip
7
R-O
Channel 4 Trip
8-15
R-O
Not used
20490
0
R-O
Channel 1 Open Circuit Alarm
1
R-O
Channel 2 Open Circuit Alarm
2
R-O
Channel 3 Open Circuit Alarm
3
R-O
Channel 4 Open Circuit Alarm
4
R-O
Channel 1 Short Circuit Alarm
5
R-O
Channel 2 Short Circuit Alarm
6
R-O
Channel 3 Short Circuit Alarm
7
R-O
Channel 4 Short Circuit Alarm
8-15
R-O
Not used
6.3 COMMANDS
6.4 ALARM BITS

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ADDRESS
NAME
DESCRIPTION
LENGTH
R/W
TYPE
X
20480
Max Temp 1
Channel 1 Maximum Temp.
16 BIT
R-O
unsigned
word
1
20481
Max Temp 2
Channel 2 Maximum Temp.
16 BIT
R-O
unsigned
word
1
20482
Max Temp 3
Channel 3 Maximum Temp.
16 BIT
R-O
unsigned
word
1
20483
Max Temp 4
Channel 4 Maximum Temp.
16 BIT
R-O
unsigned
word
1
20484
Temp 1
Channel 1 Actual Temperature
16 BIT
R-O
unsigned
word
1
20485
Temp 2
Channel 2 Actual Temperature
16 BIT
R-O
unsigned
word
1
20486
Temp 3
Channel 3 Actual Temperature
16 BIT
R-O
unsigned
word
1
20487
Temp 4
Channel 4 Actual Temperature
16 BIT
R-O
unsigned
word
1
Supply Input:
19-400VDC (85-305VAC)
Measuring Inputs:
4 x PT100 (3 terminals)
Accuracy: 1% + 1 digit
Measurement Range: -40 to +250°C
Power Consumption: < 4 VA
Relay Outputs: 5A @ 250V AC
Serial Port:
Signal type: RS-485
Protocol: Modbus RTU
Data Rate: 2400-115200b, adjustable
Isolation: 1000V AC, 1 minute
Operating Temperature range:
-20°C to +70 °C (-4°F to 158°F)
Max Relative Humidity:
95% non condensing
Protection:
IP 65 (front panel, with gasket)
IP 30 (back panel)
Enclosure:
Flame retardant, ROHS compliant,
high temperature ABS/PC (UL94-V0)
Installation:
Panel mount, rear retaining plastic
brackets.
Dimensions:
102x102x53mm (WxHxD)
Panel Cut-out: 92x92mm
Weight: 200 gr (approx)
EU Directives:
2014/35/EC (LVD)
2014/30/EC (EMC)
Reference
Standards:
EN 61010 (safety)
EN 61326 (EMC)
DATAKOM Elektronics Inc.
Tel: [phone] Fax: [phone] e-mail: [email protected] http: www.datakom.com.tr
6.5 SENSOR DATA
7. TECHNICAL SPECIFICATIONS