Sentera Controls DXTP Service manual

Mounting and operating instructions
DXTP DUCT TEMPERATURE
CONTROLLER WITH
PICONTROL

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Table of contents
SAFETY AND PRECAUTIONS 3
PRODUCT DESCRIPTION 4
ARTICLE CODES 4
INTENDED AREA OF USE 4
TECHNICAL DATA 4
STANDARDS 4
OPERATIONAL DIAGRAMS 5
WIRING AND CONNECTIONS 5
MOUNTING & OPERATING INSTRUCTIONS IN STEPS 6
MODBUS REGISTER MAPS 9
VERIFICATION OF INSTALLATION INSTRUCTIONS 10
TRANSPORT AND STOCK KEEPING INFORMATION 10
WARRANTY INFORMATION AND RESTRICTIONS 10
MAINTENANCE 10
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SAFETY AND PRECAUTIONS
Read all information, the datasheet, mounting instructions and wiring scheme
before working with the product. For personal and equipment safety, and for
optimum product performance, make sure you entirely understand the contents
before installing, using, or maintaining this product.
For safety and licensing (CE) reasons, unauthorised conversion and/ or modifications
to the product are not permitted.
e product must not be exposed to abnormal conditions, such as: extreme
temperatures, direct sunlight or vibrations. Chemical vapours with high concentration
in combination with long exposure times can affect the product performance. Make
sure the work environment is as dry as possible, check for condensation spots.
All installations shall comply with the local health and safety regulations and local
electrical codes. is product can only be installed by an engineer or a technician
who has an expert knowledge of the product and safety precautions.
Avoid contacts with energised electrical parts, always treat the product as if it
is life. Always disconnect the power source before connecting the power cables,
servicing or repairing the product.
Always verify that you apply appropriate power supply to the product and use wires
with appropriate size and characteristics. Make sure that all the screws and nuts are
well tightened and fuses (if any) are fitted well.
Recycling of equipment and packaging should be taken into consideration and
disposed in accordance with local and national legislation/regulations.
In case there are any questions that are not answered, please contact your technical
support or consult a professional.
DXTP
DUCT TEMPERATURE CONTROLLER
WITH PI CONTROL

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PRODUCT DESCRIPTION
e DXTP is a duct temperature controller with Modbus RTU communication. It
regulates a PI controlled analogue output and a relay output in two modes - Heat
and Cool.
ARTICLE CODES
Code Supply Connection
DXTPG 15—24 VAC ± 10 %
18—34 VDC
3 - wire
DXTPF 18—34 VDC 4 - wire
INTENDED AREA OF USE
■Temperature control in duct systems
■For duct use only
TECHNICAL DATA
■Analogue output: 0—10 VDC / 0—20 mA
■Relay output: C/O (230 VAC / 2 A)
■Power consumption:
►no load: max. 25 mA
►full load: max. 45 mA
■Load resistance:
►0—10 VDC mode > 500 Ω
►0—20 mA mode < 500 Ω
■Output modes: Heat and Cool
■Temperature setpoint range: 0—50 °C
■Selectable switching point: 0—50 °C
■Selectable hysteresis: 1 / 2 / 3 / 4 / 5 °C
■Proportional gain: 0—100
■Integration period: 0—10 min
■Accuracy: ± 0,5 °C
■Autotuning function in Heat mode
■Enclosure and tubing:
►ASA, grey (RAL9002)
►IP54 (according to EN 60529)
■Fixing flange:
►PE, black (RAL9004)
►IP20 (according to EN 60529)
■Operating ambient conditions:
►temperature: 0—50 °C
►rel. humidity: < 95 % rH (non-condensing)
■Storage temperature: -40—60 °C
STANDARDS
■Low Voltage Directive 2006/95/EC
■EMC Directive 2004/108/EC: EN 61326
■WEEE Direc tive 2012/19/EU
■RoHs Directive 2011/65/EU
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DUCT TEMPERATURE CONTROLLER
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OPERATIONAL DIAGRAMS
Heat mode Cool mode
Heat Mode
SetpointSetpoint
+
Hysteresis
T, [°C]
ON
(COM  NO)
Relay
output 1
OFF
(COM  NC)
Cool Mode
T, [°C]
Setpoint
ON
(COM  NO)
Relay
output 1
OFF
(COM  NC)
Setpoint
+
Hysteresis
T, [°C]
Setpoint
t, [s]
PI control
(Heat Mode)
T, [°C]
Setpoint
t, [s]
PI control
(Cool Mode)
WIRING AND CONNECTIONS
Vin Positive DC voltage/AC ~
GND Ground/AC ~
A Modbus RTU (RS485) signal A
/B Modbus RTU (RS485) signal /B
Ao1 Analogue output (0—10 VDC/0—20 mA)
GND Ground
NO1 Normally open contact
COM1 Common contact
NC1 Normally closed contact
Connections Cable cross section: max. 1,5 mm2
Cable gland clamping range: 5—10 mm
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DUCT TEMPERATURE CONTROLLER
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MOUNTING & OPERATING INSTRUCTIONS IN STEPS
Before you start mounting the DXTP controller read carefully “Safety and
Precautions”. en proceed with the following mounting steps:
1. Open the cover and insert the connecting cables through the cable gland of
theunit.
2. Do the wiring according to the wiring diagram (see Fig. 1) using the information
from section “Wiring and connections”.
Fig. 1 Wiring and connections
Power supply
15—24 VAC ± 10%/18—34 VDC
Analogue output
0—10 VDC/0—20 mA
Relay 1 contacts
Normally open
Common
Normally closed
Modbus RTU
/B A
3. Adjust the following settings:
3.1 Select the analogue output mode by JP4. (See Fig. 2 Analogue output
selection jumper.)
3.2 To reset the Modbus settings, put and hold jumper P1 for 20 seconds. (see
Fig. 3 Modbus reset jumper)
Fig. 2 Analogue output selection jumper Fig. 3 Modbus reset jumper
0—10 VDC 0—20 mA
54321
Put and hold for 20
seconds
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DUCT TEMPERATURE CONTROLLER
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4. Check if your unit starts or terminates the network (see Example 1 and
Example2). If it does not, remove the JP1 (NBT) jumper. (See Fig. 4 Network bus
resistor jumper.)
Example 1 Example 2 Fig. 4 Network bus
resistor jumper
Slave 1
RX
ТX
NBT
NBT
NBT
Slave n
Master
Slave 2 Slave 2
Slave 1
RX
ТX
NBT
NBT
Master
Slave n
ATTENTION If an AC power supply is used with any of the units in a Modbus network, the
GND terminal should NOT BE CONNECTED to other units on the network or
via the CNVT‑USB‑RS485 converter. is may cause permanent damage to the
communication semiconductors and/or the computer!
5. Mount the unit outside a duct with the tube mounted inside the duct but fixed
outside it.
5.1 Drill a tight-sealing hole according the correct tube section (Ø 13 mm).
5.2 Fix the flexible flange (Fig. 5) on the duct outer surface using the self-
drilling screws, delivered with the unit. en install the tube inside the
flexible flange. Mind the airflow direction.
5.3 Install the tube at the desired depth in the duct using the screw in the
flexible flange.
5.4 Install and connect the cables with a “drip loop”. You can also fix the unit
outside the duct via the mounting holes and as per the drawing shown
inFig. 6.
Fig. 5 Fixing flange Fig. 6 Mounting dimension
2x Ø
5
60
4x Ø 4,
5
70
66
ATTENTION Installation of the unit near high EMI‑emitting devices may lead to faulty
measurements. Use shielded wiring in areas with high EMI.
ATTENTION Keep 15 cm (5,9’’) minimal distance between the sensor lines and the 230 VAC
power lines.
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DUCT TEMPERATURE CONTROLLER
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ATTENTION Always use two separate transformers: one for the sensor and one for the
controller.
6. Close the enclosure and fix the cover.
7. Switch on the power supply.
ATTENTION Do not exceed the maximum power supply rating! Measure before installation!
Unregulated 24 VAC supply units provide higher nominal output voltage and
activate the integrated fuse protection.
ATTENTION If a G‑type article is using the same AC power supply source (transformer) as
F‑type article, a SHORT CIRCUIT may result when the power supply and analogue
signal terminals are connected to the same common ground! In this case always
connect different article types to separate AC transformers or use the same
article version.
8. Customise the factory settings to the desired ones, through 3SModbus software
(if necessary). For the default factory setting see Table Modbus register maps.
NOTE When you start autotune function, check the status of holding register 20 to know
when it finishes.
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MODBUS REGISTER MAPS
INPUT REGISTERS
Data type Description Data Values
1Temperature unsigned int. Actual temperature level 0—500 250 = 25,0 °C
2-10 Reserved, returns 0
11 Analogue output value unsigned int. Value of the analogue output 0—1.000 0 =
1.000 =
0 %
100 %
12 Relay status unsigned int. Relay status. When it is On, the contact between COM1 and NO1 is closed. 0—1 0 =
1 =
Off
On
13 Temperature setpoint unsigned int. Temperature setpoint used for PI control 0—500 250 = 25,0 °C
14 Relay setpoint unsigned int. Relay switching setpoint 0—500 250 = 25,0 °C
15 Hysteresis unsigned int. Hysteresis for the relay switching 1—5
1 =
2 =
3 =
4 =
5 =
1,0 °C
2,0 °C
3,0 °C
4,0 °C
5,0 °C
16 Output mode unsigned int. Analogue and relay output mode (Heat/Cool) 0—1 0 =
1 =
Heat mode
Cool mode
17 Kp value unsigned int. Proportional gain value 1—1.000 10 = 1,0 gain
18 Ti value unsigned int. Integration period value 1—6.000 1 =
100 =
0,1 s
10 s
19-20 Reserved, returns 0
HOLDING REGISTERS
Data type Description Data Default Values
1Device slave address unsigned int. Modbus device address 1—247 1
2Modbus baud rate unsigned int. Modbus communication baud rate 1—4 2
1 =
2 =
3 =
4 =
9.600
19.200
38.400
57.600
3Modbus parity check unsigned int. Parity check mode 0—2 1
0 =
1 =
2 =
8N1
8E1
8O1
4Device type unsigned int. Device type (Read only) DXTPX = 1041  
5HW version unsigned int. Hardware version of the device (Read only) XXXX 0 x 0110 = HW version 1.1
6SW version unsigned int. Software version of the device (Read only) XXXX 0 x 0130 = SW version 1.3
7Reserved, returns 0
8Output overwrite unsigned int. Enables the direct control over the outputs 0—1 00 =
1 =
Disabled
Enabled
9-10 Reserved, returns 0  
11 Temperature setpoint unsigned int. Temperature setpoint used for PI control 0—500 250 500 = 50,0 °C
12 Relay setpoint unsigned int. Relay switching setpoint 0—500 250 500 = 50,0 °C
13 Hysteresis unsigned int. Hysteresis for the relay switching 1—5 4
1 =
2 =
3 =
4 =
5 =
1 °C
2 °C
3 °C
4 °C
5 °C
14 Kp value unsigned int. Proportional gain value 0—1.000 50 10 = 1,0 gain
15 Ti value unsigned int. Integration period value 1—6.000 100 1 =
100 =
0,1 s
10 s
16 Output mode unsigned int. Selects the analogue and relay output mode (Heat/ Cool) 0—1 00 =
1 =
Heat mode
Cool mode
17-19 Reserved, returns 0
20 Autotune of analogue
output unsigned int. Starts autotune in PI control for the analogue output 0—1
1 =
0 =
Autotune start
(In progress)
Stop (Idle)
21 Analogue output overwrite
value unsigned int. Overwrite value for the analogue output. Always settable. Active only if holding register 8 is set to 1 0—1.000 00 = 1.000 =
0 %
100 %
22-30 Reserved, returns 0
To find out more about Modbus over serial line, follow this link: http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
DXTP
DUCT TEMPERATURE CONTROLLER
WITH PI CONTROL

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VERIFICATION OF INSTALLATION INSTRUCTIONS
Check if both LEDs (LEDTX and LEDRX) blink after you switch on your unit.
(seeFig.7 Communication detection indication) If they do, your unit has detected
Modbus network. If they do not, check the connections again.
Fig. 7 Communication detection indication
ATTENTION e status of both LEDs (LEDTX and LEDRX) can be checked only when the unit
is energised. Take the relevant safety measures!
TRANSPORT AND STOCK KEEPING INFORMATION
Avoid shocks and extreme conditions; stock in original packing.
WARRANTY INFORMATION AND RESTRICTIONS
Two years from the delivery date against defects in manufacturing. Any modifications
or alterations to the product after the date of publication relieve the manufacturer
of any responsibilities. e manufacturer bears no responsibility for any misprints or
mistakes in this data.
MAINTENANCE
In normal conditions this product is maintenance-free. If soiled, clean with a dry or
dampish cloth. In case of heavy pollution, clean with a non-aggressive product. In
these circumstances the unit should be disconnected from the supply. Pay attention
that no fluids enter the unit. Only reconnect it to the supply when it is completelydry.
DXTP
DUCT TEMPERATURE CONTROLLER
WITH PI CONTROL