Sentera RXTP Series Service manual

Mounting and operating instructions
RXTP ROOM 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 5
MODBUS REGISTER MAPS 8
VERIFICATION OF INSTALLATION INSTRUCTIONS 9
TRANSPORT AND STOCK KEEPING INFORMATION 9
WARRANTY INFORMATION AND RESTRICTIONS 9
MAINTENANCE 9
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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.
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PRODUCT DESCRIPTION
e RXTP is a room 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
RXTPG 15—24 VAC ± 10 %
18—34 VDC 3 - wire
RXTPF 18—34 VDC 4 - wire
INTENDED AREA OF USE
■Monitoring and maintaining temperature and relative humidity in HVAC applications
■For indoor use only
TECHNICAL DATA
■1 analogue output: 0—10 VDC/0—20 mA
■1 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
■Selectable temperature ranges: 0—30 °C/10—40 °C/20—50 °C/0—50 °C
■Free selectable temperature range via Modbus: 0—50 °C
■Selectable switching points: via trimmers or Modbus
■Selectable temperature hysteresis: 1 / 2 / 3 / 4 / 5 °C
■Auto-tuning function in Heat mode with three-second light indication (see Fig. 8
Operating indication)
■Enclosure:
►rear lid: plastic ABS, black (RAL9004)
►front cover: ASA, ivory (RAL9010)
■Protection standard: IP30 (according to EN 60529)
■Operating ambient conditions:
►temperature: 0—50 °C
►rel. humidity: < 95 % rH (non-condensing)
■Storage temperature: -25—50 °C
STANDARDS
■Low Voltage Directive 2014/35/EC
■EMC Directive 2014/30/EC: EN 61000-6-2: 2005/AC:2005,
EN 61000-6-3:2007/A1:2011/AC:2012, EN 61326-2-3:2013
■WEEE Direc tive 2012/19/EC
■RoHs Directive 2011/65/EC
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OPERATIONAL DIAGRAMS
Heat mode Cool mode
SetpointSetpoint -Hysteresis T, [
0
C]
ON
(COM
 NO)
Relay
output 1
OFF
(COM
 NC)
T, [
0
C]
Setpoint
ON
(COM
 NO)
Relay
output 1
OFF
(COM
 NC)
Setpoint +Hysteresis
T, [0C]
Setpoint
t, [s]
PI control
T, [%]
Setpoint
t, [s]
PI control
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
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MOUNTING & OPERATING INSTRUCTIONS IN STEPS
Before you start mounting the RXTP controller, read carefully “Safety and
Precautions”. Choose a smooth surface for an installation location (a wall,
panel and etc.).
Follow these steps:
1. Open the white cover by releasing the locking plates on both sides of the cover
and remove it. (See Fig. 1 Locking plates release.)
2. Insert the cables through the cable opening of the enclosure rear lid. (See Fig. 2
Mounting dimensions.)
3. Fix the unit to the wall / panel taking into account that the unit has to be installed
at a minimum height of 1,5 m and the air flow has to pass freely through it. Mind
the correct mounting position and unit dimensions. See Fig. 2 and Fig. 3.
Fig. 1 Locking plates release Fig. 2 Mounting dimension Fig. 3 Mounting position
2x Ø 6
59,8
9,8
74,5
104,5
74
,
5
1
0
4,5
20
104,5
25,6
70,5
Acceptable Not acceptable
Keep 1,5 m. minimum
distance from the floor
4. Do the wiring according to the wiring diagram (see Fig. 4) using the legend
information from section “Wiring and connections”.
Fig. 4 Wiring and connections
Power supply
15—24 VAC ± 10%/18—34 VDC
Relay 1 contacts
Normally closed
Common
Normally open
Modbus
RTU
A
/B
Analogue output
0—10 VDC/0—20 mA
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5. Check if your unit starts or terminates the network (see Example 1 and
Example2). If it does not, remove the NBT jumper (see Fig. 5).
Example 1 Example 2 Fig. 5 Network bus
resistor jumper
Slave 1
RX
ТX
NBT
NBT
NBT
Slave 2
Master
Slave n 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!
6. Adjust the standalone settings:
6.1 To select the analogue output mode, use jumper JP4 (See Fig. 6 Analogue
output selection jumper).
6.2 To reset the Modbus settings, put and hold jumper P1 for 20 seconds. (See
Fig.7 Modbus reset jumper).
Fig. 6 Analogue output selection jumper Fig.7 Modbus reset jumper
0—10 VDC
0—20 mA
54321
Put and hold for 20 seconds
7. Close the enclosure and fix the cover.
8. 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.
9. You can customise the factory settings to the desired ones through the
3SModbus software (if necessary). For the default factory settings, see Table
Modbus register maps.
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MODBUS REGISTER MAPS
INPUT REGISTERS
Data type Description Data Values
1Temperature signed 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) RXTPX = 1023 
5HW version unsigned int. Hardware version of the device (Read only) XXXX 0 x 0110 = HW version 1.1
6FW version unsigned int. Firmware version of the device (Read only) XXXX 0 x 0130 = FW version 1.3
7Operating mode unsigned int Reserved, 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)
If you want to find out more about Modbus over serial line, please visit: http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
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VERIFICATION OF INSTALLATION INSTRUCTIONS
After switching on the unit, the blue ON/OFF LED should blink every 2 seconds
during the 30-second initialization period (SeeFig. 8 Operating indication). After this
period the LED indicator illuminates continuously if the unit is working properly. If
this is not the case, check the connections again.
If both LEDs (LEDTX and LEDRX) blink after you switch on your unit, your unit has
detected Modbus network (SeeFig.9 Communication detection indication). If this is
not the case, check the connections again.
Fig. 8 Operating
indication
Fig. 9 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.
RXTP ROOM TEMPERATURE CONTROLLER
WITH PI CONTROL