Datakom DKM-046 User manual

DKM-046 User Manual V-2.0
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DKM-046
TEMPERATURE &
HUMIDITY
CONTROLLER
DKM-046 is a DIN Rail mounted precision
unit capable of measuring temperature and
humidity in three different locations, provide
protection with 4 relay outputs and serve data
to remote monitoring and control systems.
Sensing modules are separated from the
base unit, connecting with cables. One
sensor comes together with the base unit.
Additional sensors may be purchased
separately.
Two different auxiliary supply versions are
available. The AC model accepts 85 to
305VAC and the DC model accepts 19 to
150VDC.
The module provides data to automation and
BMS systems through its isolated RS-485
Modbus port.
The programming is performed through
pushbuttons on the unit.
Sensor modules incorporate ST-HTS221
polymer dielectric planar capacitive sensors.
Relay functions are programmable with
functions selected from a list.
● Supports 3 temperature & humidity sensors
● AC and DC auxiliary supply versions
● Programmable relay outputs: 4
● Temperature and relative humidity control
● Independent cooling / heating / humidification
/ dehumidification functions for each sensor
● Temperature measuring range: -40...+80°C
● Humidity measuring range: 0% ... 100%
● Humidity accuracy: ±3.5% , 20 ... +80%
● Temperature accuracy: ± 1°C, 0 ... +60 °C
● Factory calibrated sensors
● Front panel programming
● Supports Modbus programming
●DIN rail mounted, easy installation
● Operating temp range: -20°C ... +70 °C
● Two part connection system
DESCRIPTION
FEATURES

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Electrical equipment should be installed only by qualified
specialist. No responsibility is assured 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 are no serviceable parts inside.
Fuses must be connected to the power supply inputs, in close
proximity of the unit.
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. Although the unit is
designed with a wide safety margin, over-range parameters may
reduce lifetime, alter operational precision or even damage the
unit.
Do not try to clean the device with solvent or the like. Only
clean with a dump cloth.
Verify correct terminal connections before applying power.
SAFETY NOTICE
Failure to follow below instructions will result in
death or serious injury

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Section
1. INSTALLATION INSTRUCTIONS
1.1 FRONT PANEL VIEW
1.2 ELECTRICAL INSTALLATION
1.3 INSTALLATION DIAGRAM
2. PUSHBUTTON FUNCTIONS
3. SCREEN NAVIGATION
3.1 LAMP TEST
4. PROGRAMMING
4.1 ENTERING THE PROGRAMMING MODE
4.2 RESETTING ALARMS
4.3 SELECTING THE DEFAULT SCREEN
4.4 ADJUSTING TEMPERATURE LOW AND HIGH LIMITS
4.5 ADJUSTING RELATIVE HUMIDITY LOW AND HIGH LIMITS
4.6 ENABLING / DISABLING SENSORS
4.7 CONFIGURING RELAY OUTPUTS
4.8 ALARM DELAY
4.9 ALARM LOACK
4.10 MODBUS PARAMETERS
4.11 ADJUSTING TEMPERATURE OFFSET VALUES
4.12 ADJUSTING RELATIVE HUMIDITY OFFSET VALUES
4.13 ADJUSTING TEMPERATURE DIFFERENCE ALARM LIMITS
4.14 ADJUSTING COOLING START TEMPERATURE UPPER LIMITS
4.15 ADJUSTING HEATING START TEMPERATURE LOW LIMITS
4.16 ADJUSTING TEMPERATURE HYSTERESIS FOR COOLING AND
HEATING
4.17 ADJUSTING DE-HUMIDIFICATION START HUMIDITY
4.18 ADJUSTING HUMIDIFICATION START HUMIDITY
4.19 ADJUSTING HUMIDITY HYSTERESIS FOR HUMIDIFICATION
AND DE-HUMIDIFICATION
4.20 DISPLAYING THE FIRMWARE VERSION
4.21 RETURN TO FACTORY SETTINGS
TABLE OF CONTENTS

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5. MODBUS COMMUNICATIONS
5.1. DESCRIPTION
5.2. COMMANDS
5.3. PROGRAM PARAMETERS
5.4. MEASUREMENTS AND CONTROLLER RECORDS
6. TECHNICAL SPECIFICATIONS

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Before installation:
Read the user manual carefully, determine the correct connection diagram.
Install the unit to the DIN rail.
Make electrical connections with plugs removed from sockets, then place plugs to their sockets.
Be sure that adequate cooling is provided.
Be sure that the temperature of the environment will not exceed the maximum operating temperature in any
case.
Be sure that the unit is not subject to water spill.
Below conditions may damage the device:
Incorrect connections.
Incorrect power supply voltage.
Connecting or removing data terminals when the unit is powered-up.
Connecting or removing sensors when the unit is powered-up.
High voltage applied to communication ports.
Overload or short-circuit at relay outputs.
Excessive vibration, direct installation on vibrating parts.
Below conditions may cause abnormal operation:
Power supply voltage below minimum acceptable level.
Power supply frequency outside acceptable limits.
1. INSTALLATION INSTRUCTIONS

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1.1 FRONT PANEL VIEW

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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.
Fuses must be connected to the power supply inputs, 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).
Follow national rules for 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.
1.2 ELECTRICAL INSTALLATION

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1.3 INSTALLATION DIAGRAM

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BUTTON
FUNCTION
PROGRAMMING: Select related parameter / save adjusted
parameter.
Switch to the upper screen.
PROGRAMMING: increase value
Switch to the lower screen.
PROGRAMMING: decrease value
HELD PRESSED TOGETHER FOR 2 SECONDS:
Selects programming mode. If held pressed in programming
mode, then returns to normal mode.
NO KEY PRESSED DURING 1 MINUTE:
Returns to the main display screen.
2. PUSHBUTTON FUNCTIONS

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Buttons allow navigation between measurement values. (Temp_1, Humidity_1,
Temp_2, Humidity_2, Temp_3, Humidity_3, Alarms)
Leds related to the currently displayed values will turn on, other leds will turn off.
Temperature display: Temperature is displayed with 0.1 °C accuracy. The related Modbus
register has 0.01 °C accuracy.
Humidity display: The relative humidity is displayed with 1% accuracy. The related
Modbus register has 0.01% accuracy.
HELD PRESSED FOR 2 SECONDS:
Enters lamp test mode. When released returns to
normal operating mode.
3.1 LAMP TEST
3. SCREEN NAVIGATION

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In order to offer the maximum flexibility to the customer, the module has several
programmable parameters.
Device configurations
Default screen configuration
Measurement configurations
Alarm reset
Alarm high/low limit adjustments
Input/Output Configurations
Relay configuration
Alarm delays
Modbus configuration
Unit Calibration
Modbus configuration
Return to factory settings
In order to enable the programming menu,
hold both MENU buttons pressed for 2 seconds.
In order to exit programming menu,
hold both MENU buttons pressed for 2 seconds.
If no button is pressed during 1 minute, then the unit will
automatically close the programming mode.
Parameters may be scrolled with these buttons.
When SET button is pressed:
The parameter value is displayed
The value on the screen is recorded and the next
parameter is displayed.
Parameter values are modified with UP and DOWN Menu
buttons. If the button is held pressed, the the value will change
with larger steps.
After adjusting the parameter value this button saves the value
on the screen and switched to the next parameter.
4. PROGRAMMING
4.1 ENTERING THE PROGRAMMING MODE

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
Parameter value:
0: No operation
1: Reset alarms
Setting this parameter to 1 causes alarms to be reset.
The parameter value is not saved and always reads 0.
The description of alarm codes visible on the screen are below:
Alarm Code
Description
AL1
Sensor-1 low temperature
AL2
Sensor-1 high temperature
AL3
Sensor-1 low relative humidity
AL4
Sensor-1 high relative humidity
AL5
Sensor-2 low temperature
AL6
Sensor-2 high temperature
AL7
Sensor-2 low relative humidity
AL8
Sensor-2 high relative humidity
AL 9
Sensor-3 low temperature
A10
Sensor-3 high temperature
A11
Sensor-3 low relative humidity
A12
Sensor-3 high relative humidity
A13
T1-T2 or T2-T1 temperature difference alarm
A14
T2-T3 or T3-T2 temperature difference alarm
A15
T3-T1 or T1-T3 temperature difference alarm
When an alarm occurs, the display switches automatically to alarm display mode. If any key
is pressed then it resumes normal operation.

This parameter selects the screen menu where the unit returns
when no pushbutton is pressed during 1 minutes.
Param.
değeri
Ekran
0
Auto-scroll screens
1
Temperature_1 measurement
2
Humidity_1 measurement
3
Temperature_2 measurement
4
Humidity_2 measurement
5
Temperature_3 measurement
6
Humidity_3 measurement
4.3 SELECTING THE DEFAULT SCREEN
4.2 RESETTING ALARMS

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


These parameters adjust the low temperature alarm limit for the
related sensor.
Adjustment range is between -20°C and +80°C.
If the parameter is set to -20°C then low temperature alarm is
not monitored for the related sensor.
As the default factory set, the alarm is passive.



These parameters adjust the high temperature alarm limit for
the related sensor.
Adjustment range is between -20°C and +80°C.
If the parameter is set to +80°C then high temperature alarm is
not monitored for the related sensor.
As the default factory set, the alarm is passive.



These parameters adjust the low relative humidity alarm limit for
the related sensor.
Adjustment range is between 1% and 99%.
If the parameter is set to 1% then low relative humudity alarm is
not monitored for the related sensor.
As the default factory set, the alarm is passive.



These parameters adjust the high relative humidity alarm limit
for the related sensor.
Adjustment range is between 1% and 99%.
If the parameter is set to 99% then high relative humudity alarm
is not monitored for the related sensor.
As the default factory set, the alarm is passive.
4.5 ADJUSTING RELATIVE HUMIDITY LOW AND HIGH LIMITS
4.4 ADJUSTING TEMPERATURE LOW AND HIGH LIMITS

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

Parameter value:
0: Sensor disabled
1: Sensor enabled
These parameters enable/disable sensors 2 and 3.
The factory set value is 0 (sensor disabled).
When a sensor is disabled, the temperature and relative alarm
limits related to this sensor cannot be adjusted.
Sensor 1 cannot be disabled. It is always active.
4.6 ENABLING / DISABLING SENSORS

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















The unit provides 4 relay outputs. Each output reflects the
combination of 4 different relay functions. The combination
options are explained in the next parameter.
The total number of relay functions are 16. They are presented
as in the picture at left.
As an examle, 1r4 means function_4 of relay_1, 3r2 means
function_2 of relay_3.
Unused funtions should be left as 0.
Value
Relay Function
0
-
1
Sensor-1 low temperature
2
Sensor-1 high temperature
3
Sensor-1 low relative humidity
4
Sensor-1 high relative humidity
5
Sensor-2 low temperature
6
Sensor-2 high temperature
7
Sensor-2 low relative humidity
8
Sensor-2 high relative humidity
9
Sensor-3 low temperature
10
Sensor-3 high temperature
11
Sensor-3 low relative humidity
12
Sensor-3 high relative humidity
13
Function active if any alarm exists
14
Through Modbus registers:
If any non-zero value is written in related
register, then the function is active.
Relay-1: address 48
Relay-2: address 49
Relay-3: address 50
Relay-4: address 51
15
T1-T2 temperature difference alarm
16
T2-T3 temperature difference alarm
17
T3-T1 temperature difference alarm
18
T1 temperature cooling active
19
T1 temperature heating active
20
H1 sensor de-humidification active
21
H1 sensor humidification active
22
T2 temperature cooling active
23
T2 temperature heating active
24
H2 sensor de-humidification active
25
H2 sensor humidification active
26
T3 temperature cooling active
27
T3 temperature heating active
28
H3 sensor de-humidification active
29
H3 sensor humidification active
4.7 CONFIGURING RELAY OUTPUTS

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The factory set value for all relay functions is 0.
The adjustment range is from 0 to 14.




Each relay output is activated by the combination of 4 different
functions as explained above. Thus relay may be assigned to
complex functions.
Parameters at left adjust the function combination method for
each relay output.
0: Functions are combined with logical OR operation. Thus if
any of the function is active, then the relay output is active.
1: Functions are combined with logicalAND operation. Thus the
relay output will be active only if all functions are active.

This parameter adjusts the delay for relay activation after all
conditions for relay operation are met.
The factory set value is 0.
Adjustment range is between 0 and 999 seconds.

This parameter adjusts the delay for alarm activation after an
alarm condition occurs. It also determines the delay for alarm
deactivation after the alarm condition is removed.
The factory set value is 0.
Adjustment range is between 0 and 999 seconds.
4.8 ALARM DELAY

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
0: Alarm lock disabled
1: Alarm lock enabled
When this parameter is set to 1, even if the alarm cause is
removed, alarms will persist until manually reset.
When this parameter is set to 0, when the alarm cause is
removed, alarms automatically disappear.
Factory set value is 0.
Adjustment range is 0 to 1.

This parameter determines the Modbus node address of the
unit. Every unit in the same Modbus loop must have a different
node address.
Factory set value is 1.
Adjustment range is 0 to 255.

This parameter determines the data rate (baud rate) used in the
Modbus communication. Every unit in the same Modbus loop
must use the same data rate.
0: Baud rate = 2400
1: Baud rate = 4800
2: Baud rate = 9600
3: Baud rate = 19200
4: Baud rate = 38400
5: Baud rate = 57600
6: Baud rate = 115200
Factory set value is 2.
Adjustment range is 0 to 6.
4.9 ALARM LOCK
4.10 MODBUS PARAMETERS

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


These parameters determine respectively the offset value to be
added to temperature sensors 1, 2 and 3.
Factory set value is 0.
Adjustment range is between –9.9 and + 9.9 °C.



These parameters determine respectively the offset value to be
added to relative humidity sensors 1, 2 and 3.
Factory set value is 0.
Adjustment range is between –9.9% and + 9.9%.
4.11 ADJUSTING TEMPERATURE OFFSET VALUES
4.12 ADJUSTING RELATIVE HUMIDITY OFFSET VALUES

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





These parameters determine respectively the high alarm limits
for temperature differences T1-T2, T2-T1, T2-T3, T3-T2, T3-T1,
T1-T3.
Adjustment range is between 0°C and 100°C.
Factory set value is 0 and the alarm is passive.
When this parameter is set to 0, the temperature difference
alarm is de-activated.



These parameters determine respectively the cooling start
upper limits for temperature sensors 1 , 2 and 3.
When the temperaure measured from the related sensor goes
over the programmed limit, then the cooling relay function will
become active. When the measured temperature goes below
the limit more than the programmed hysteresis value, then the
cooling relay function will become passive.
Adjustment range is between -21°C and +80°C.
Factory set value is +40°C.
4.14 ADJUSTING COOLING START TEMPERATURE UPPER LIMITS
4.13 ADJUSTING TEMPERATURE DIFFERENCE ALARM LIMITS

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


These parameters determine respectively the heating start
temperature limits for temperature sensors 1 , 2 and 3.
When the temperaure measured from the related sensor goes
below the programmed limit, then the heating relay function will
become active. When the measured temperature goes above
the limit more than the programmed hysteresis value, then the
heating relay function will become passive.
Adjustment range is between -21°C and +80°C.
Factory set value is +20°C.



These parameters determine respectively the hysteresis values
for stopping the heating or cooling for temperature sensors 1 , 2
and 3.
Adjustment range is between 0°C and 100°C.
Factory set value is 5°C.



These parameters determine respectively the de-humidification
start upper limits for humidity sensors 1 , 2 and 3.
When the relative humidity measured from the related sensor
goes over the programmed limit, then the de-humidification
relay function will become active. When the measured relative
humidity goes below the limit more than the programmed
hysteresis value, then the de-humidification relay function will
become passive.
Adjustment range is between 0% and +100%
Factory set value is 70%.
4.17 ADJUSTING DE-HUMIDIFICATION START HUMIDITY
4.16 ADJUSTING TEMPERATURE HYSTERESIS FOR COOLING
AND HEATING
4.15 ADJUSTING HEATING START TEMPERATURE LOW LIMITS