Sentera Controls RSTH 2 Series Service manual

Mounting and operating instructions
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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 5
OPERATIONAL DIAGRAMS 5
WIRING AND CONNECTIONS 6
MOUNTING & OPERATING INSTRUCTIONS IN STEPS 6
OPERATING INSTRUCTIONS 8
VERIFICATION OF INSTALLATION INSTRUCTIONS 9
MODBUS REGISTER MAPS 9
TRANSPORT AND STORAGE 11
WARRANTY AND RESTRICTIONS 11
MAINTENANCE 11
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SAFETY AND PRECAUTIONS
Read all the information, the datasheet, mounting and operating instructions and
study the wiring and connection diagram 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.
Forsafetyandlicensing(CE)reasons, unauthorisedconversion and/or modifications
of the product are inadmissible.
e product should not be exposed to abnormal conditions, such as: extreme
temperatures, direct sunlight or vibrations. Long-term exposure to chemical
vapours in high concentration can affect the product performance. Make sure the
work environment is as dry as possible; avoid condensation.
All installations shall comply with local health and safety regulations and local
electrical standards and approved codes. is product can only be installed by an
engineer or a technician who has expert knowledge of the product and safety
precautions.
Avoid contacts with energised electrical parts; always treat the product as if it is
live. Always disconnect the power supply before connecting, servicing or repairing
the product.
Always verify that you apply appropriate power supply to the product and use
appropriate wire 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 these
should be disposed of 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 RSTHX-2 series are multifunctional room sensors which measure temperature, relative
humidity and ambient light. ey feature a wide range of low voltage power supply
and two analog / modulating outputs. All parameters are accessible via Modbus RTU.
ARTICLE CODES
Code Supply
RSTHG-2 18—34 VDC / 15—24 VAC ± 10 %
RSTHF-2 18—34 VDC
INTENDED AREA OF USE
■Monitoring indoor temperature and relative humidity in HVAC applications
■Suitable for residential and commercial buildings
■For indoor use only
TECHNICAL DATA
■2 analog / modulating outputs:
►0—10 VDCmode: min. load 50 kΩ (RL≥ 50 kΩ)
►0—20 mA: max. load 500 Ω (RL≤ 500 Ω)
►PWM (open-collector type): PWM Frequency: 1 kHz, min. load 50 kΩ (RL≥ 50kΩ);
PWM voltage level 3,3 VDC or 12 VDC
■Selectable temperature range: 0—50 °C
■Selectable relative humidity range: 5—85 %
■Ambient light sensor with adjustable ‘active’ and ‘standby’ level
■3 LEDs for status indication
■Accuracy: ± 0,4 °C (0—50 °C) and ± 3 % rH (5—85 % rH), depending on the selected
parameter
■Enclosure:
►rear plate: plastic ABS, black (RAL 9004)
►front cover: ASA, ivory (RAL 9010)
■Protection standard: IP30 (according to EN 60529)
■Operating ambient conditions:
►temperature: 0—50 °C
►rel. humidity: 5—85 % rH, (non-condensing)
■Storage temperature: -10—60 °C
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STANDARDS
■Low Voltage Directive 2014/35/EC
►EN 60529:1991 Degrees of protection provided by enclosures (IP Code)
Amendment AC:1993 to EN 60529
►EN 60730-1:2011 Automatic electrical controls for household and similar use -
Part 1: General requirements
■EMC directive 2014/30/EU:
►EN 60730-1:2011 Automatic electrical controls for household and similar use -
Part 1: General requirements
►EN 61000-6-1:2007 Electromagnetic compatibility (EMC) - Part 6-1: Generic
standards - Immunity for residential, commercial and light-industrial
environments
►EN 61000-6-3:2007 Electromagnetic compatibility (EMC) - Part 6-3: Generic
standards - Emission standard for residential, commercial and light-industrial
environments Amendments A1:2011 and AC:2012 to EN 61000-6-3
►EN 61326-1:2013 Electrical equipment for measurement, control and laboratory
use - EMC requirements - Part 1: General requirements
►EN 61326-2-3:2013 Electrical equipment for measurement, control and
laboratory use - EMC requirements - Part 2-3: Particular requirements. Test
configuration, operational conditions and performance criteria for transducers
with integrated or remote signal conditioning
■WEEE 2012/19/ EC
■RoHs Directive 2011/65/EC
OPERATIONAL DIAGRAMS
10
0
50
20
30
40
50
60
70
80
90
100
Minimum
range
Minimum
alert
Maximum
alert
Analog
output 1
[%]
T, [°C] / rH [%]
Maximum
range
Out of
range
Within
range
Alert
range
Alert
range
Out of
range
* LED indicaon - T (default) and rH
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WIRING AND CONNECTIONS
Article type RSTHF-2 RSTHG-2
VIN 18—34 VDC 18—34 VDC 15—24 VAC ±10%
GND Ground Common ground*AC ~*
AModbus RTU (RS485), signal A Modbus RTU (RS485), signal A
/B Modbus RTU (RS485), signal /B Modbus RTU (RS485), signal /B
AO1 Analog / modulating output 1 for temperature
measurement (0—10 VDC / 0—20 mA / PWM)
Analog / modulating output 1 for temperature
measurement (0—10 VDC / 0—20 mA / PWM)
GND Ground AO Common ground*
AO2 Analog / modulating output 2 for relative humidity
measurement (0—10 VDC / 0—20 mA / PWM)
Analog / modulating output 2 for relative humidity
measurement (0—10 VDC / 0—20 mA / PWM)
GND Ground AO Common ground*
Connections Spring contact terminal blocks, cable cross section: 1,5 mm2
*Caution: Never connect the common ground of G type articles to other devices powered by a DC voltage. If an AC power supply is used with a unit on 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!
MOUNTING & OPERATING INSTRUCTIONS IN STEPS
Before you start mounting the RSTHX-2 room sensor, read carefully “Safety and
Precautions”. Choose a smooth surface for installation (a wall, panel and etc.).
Follow these steps:
1. Using a flat screwdriver, remove the front white cover by releasing the snap-fits
on its both sides (see Fig. 1 Snap-fits release).
2. Insert the cables through the opening on the rear plate (See Fig. 2 Mounting
dimensions.)
3. Using suitable fastening materials (not supplied), position the room sensor at
least 1,5 m from the floor. When planning the installation, allow enough clearance
for maintenance and service. Mount the sensor in a well-ventilated area. Mind
the correct mounting position and unit dimensions. See Fig. 2 and Fig. 3.
Fig. 1 Snap-fits release Fig. 2 Mounting dimension
2x Ø 6
59,8
9,8
74,5
104,5
20
104,5
25,6
70,5
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Fig. 3 Mounting position
Correct Incorrect
Position at min. 1,5 m
from the floor
4. Do the wiring according to the wiring diagram (see Fig.4).
Fig. 4 Wiring and connections
Analog /
modulating
output 1 - T
Analog / modulating
output 2 - rH
Power supply
Modbus RTU
5. Put back the cover snap it in.
6. Switch on the mains supply.
5.
Optional settings
If your unit is the first or the last unit on the Modbus RTU network (see Example 1
and Example2), enable the NBT resistor via 3SModbus or Sensistant. If your device
is not an end device, leave the NBT disabled (default Modbus setting).
Example 1 Example 2
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 on 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!
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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 We advise you not to use G and F-type articles together on the same network. If
G and F-type articles are used together on the same network, make sure you use
separate power supplies for both types. Always connect different article types to
separate AC transformers or use the same article version.
CAUTION Do not expose to direct sunlight!
OPERATING INSTRUCTIONS
Calibration procedure:
Both the relative humidity and temperature sensor elements are factory calibrated.
Recalibration is not necessary.
Bootloader
anks to the bootloader functionality, the sensor firmware can be updated via
Modbus RTU communication. To enter ‘Boot mode”, put a jumper onto pins 3 and
4 of the P1 header and restart the power supply (see Fig. 5). Once ‘Boot mode’ is
activated, the firmware can be updated via SM Boot application (part of 3SModbus
software suite) or Sensistant.
Fig. 5 P1 header
12345
Put a jumper onto pins 1 and 2 and wait
for at least 5 seconds to reset the Modbus
communication parameters
12345
Put a jumper onto pins 3 and 4 and restart
the supply to enter bootloader mode
LED indications
1. When the green LED is on, the measured value (temperature or relative humidity)
is between the minimum and maximum alert range values (Fig 6 - 1).
2. When the yellow LED is on, the measured value (temperature or relative humidity)
is in the alert range (Fig 6 - 2).
3. When the red LED is on, the measured value (temperature or relative humidity)
is below the minimum measurement range value or above the maximum value.
Blinking red LED indicates loss of communication with a sensor (Fig 6 - 3).
Fig. 6 LED indications
3
2
1
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NOTE By default, the LED indication refers to temperature measurements. is can be
changed to relative humidity via Modbus Holding Register 26 (see Table Holding
registers below).
Ambient light sensor
e measured light intensity in luxes is available in Input Register 5. Additionally,
an active and standby level can be defined in Holding registers 34 and 35. Input
Register 6 indicates if the measured value is below standby level, above active level
or in between both levels:
■If the measured light level is below the Standby level, Input Register 6 indicates
“Standby”.
■If the measured ambient light level is above the Active level, Input Register 6
indicates “Active”.
■If the measured ambient light level is between the active and stand-by level, Input
Register 6 indicates “Low intensity”. When this feature is used, it is advisable to
adjust the active and standby levels in Holding Registers 34 and 35 according to
the actual ambient light conditions around the sensor.
VERIFICATION OF INSTALLATION INSTRUCTIONS
After switching on the power supply one of the LEDs lights up according to the
status of the measured variable. If this is not the case, check the connections.
MODBUS REGISTER MAPS
INPUT REGISTERS
Data type Description Data Values
1Temperature signed int. Actual temperature level -300—700 500 = 50,0 °C
2Relative humidity unsigned int. Actual relative humidity level 0—1.000 1.000 = 100,0 % rH
3Dew point signed int. Calculated dew point -700—700 200 = 20,0 °C
4CO2unsigned int. Actual CO2level 400—2.000 2.000 = 2.000 ppm
5Ambient light intensity unsigned int. Measured light intensity 0—32.000 1.000 = 1.000 lx
6 Active / standby unsigned int.
Active or Standby indication according the Active /
Standby light level defined via holding registers 34 and
35. If the measured light level is between the two levels,
the indication is “0” (Low intensity)
0—2
0 =
1 =
2 =
Low light intensity
Active
Standby
7—10 Reserved, return “0”
11 Analog output value 1
(temperature) unsigned int. Analog output value for temperature (T) 0—1.000 0 = 1.000 =
0 %
100 %
12 Analog output value 2 (relative
humidity) unsigned int. Analog output value for relative humidity (rH) 0—1.000 0 = 1.000 =
0 %
100 %
13 Reserved, returns “0”
14 Temperature alert flag unsigned int.
Flag indicates that measured temperature is outside
set alert values. Set to ‘1’ when the measured value is
outside the temperature alert values defined by holding
registers 20 and 21
0—1 0 =
1 =
Measured temperature is OK
Measured temperature is too high/ low
15 Relative humidity alert flag unsigned int.
Flag indicates that measured relative humidity is outside
set alert values. Set to ‘1’ when the measured value is
outside the relative humidity alert values defined by
holding registers 22 and 23
0—1 0 =
1 =
Measured rH is OK
Measured rH is too high/ low
16 Reserved, returns “0”
17 Temperature range limit flag unsigned int.
Flag indicates that measured temperature is outside set
range limit values. Set to ‘1’ when the measured value
is outside the temperature range limit values defined by
holding registers 14 and 15
0—1 0 =
1 =
Temperature range is OK
Temperature range is too high/ low
18 Relative humidity range
limit flag unsigned int.
Flag indicates that measured relative humidity is outside
set range limit values. Set to ‘1’ when the measured value
is outside the relative humidity limit range values defined
by holding registers 16 and 17
0—1 0 =
1 =
rH range is OK
rH range is too high/ low
19 Reserved, returns “0”
20 Humidity / temperature
sensor fault unsigned int. Flag indicates if the communication with the temperature and humidity sensor is lost 0—1 0 = 1 =
No
Yes
21 Reserved, returns “0”
22 Ambient light sensor fault unsigned int. Flag that shows if the communication with the ambient
light sensor is lost 0—1 0 = 1 =
No
Yes
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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 0—6 2
0 =
1 =
2 =
3 =
4 =
5 =
6 = 
4.800
9.600
19.200
38.400
57.600
115.200
230.400
3Modbus parity mode unsigned int. Parity check mode 0—2 1
0 =
1 =
2 =
8N1
8E1
8O1
4Device type unsigned int. Device type (Read only) RSTHX-2= 1093 
5HW version unsigned int. Hardware version of the device (Read only) XXXX 0x0100 = HW version 1.00
6FW version unsigned int. Firmware version of the device (Read only) XXXX 0x0100 = FW version 1.00
7 Reserved, returns “0”
8Output 1 overwrite (T) unsigned int. Enables the direct control over the temperature output. 0 —1 00 =
1 =
Disabled
Enabled
9Output 2 overwrite (rH) unsigned int. Enables the direct control over the rH output 0—1 00 =
1 =
Disabled
Enabled
10 Reserved, returns “0”
11 Output 1 type (T) unsigned int. Select analog / digital output type 1—3 1
1 =
2 =
3 =
1—10 VDC
0—20 mA
PWM
12 Output 2 type (rH) unsigned int. Select analog / digital output type 1—3 1
1 =
2 =
3 =
1—10 VDC
0—20 mA
PWM
13 Reserved, returns “0”
14 Minimum temperature
range unsigned int. Minimum value of the temperature range; cannot be set higher than max. temperature range minus 5ºC 0 — (Max. range — 50) 0100 = 10,0 °C
15 Maximum temperature
range unsigned int. Maximum value of temperature range; cannot be set lower than min. temperature range plus 5ºC (Min. range + 50) – 500 500 500 = 50,0 °C
16 Minimum relative humidity
range unsigned int. Minimum value of the rH range; cannot be set higher than max. rH range minus 5 % 50 — (Max. range — 50) 50 200 = 20,0 % rH
17 Maximum relative humidity
range unsigned int. Maximum value of rH range; cannot be set lower than min. rH range plus 5% (Min. range + 50) – 850 850 850= 85,0 % rH
18—19 Reserved, return “0”
20 Minimum temperature
alert unsigned int. Minimum temperature alarm value Min. temperature range — Max. temperature alarm 0100 = 10,0 ºC
21 Maximum temperature
alert unsigned int. Maximum temperature alarm value Min. temperature alarm — Max. temperature range 500 500 = 50,0 ºC
22 Minimum relative humidity
alert unsigned int. Minimum relative humidity alarm value Min. relative humidity range — Max. relative humidity alarm 50 200 = 20,0 % rH
23 Maximum relative
humidity alert unsigned int. Maximum relative humidity alarm value Min. relative humidity alarm —Max. relative humidity range 850 850 = 85,0 % rH
24—25 Reserved, return “0”
26 LED indication unsigned int. LED indication related to one of the parameters 1—3 11 =
2 =
temperature
rH
27 Internal voltage source
selection Output 1 (T ) unsigned int. Selection of internal voltage source for PWM output 1 0—1 00 = 1 =
3,3 VDC
12 VDC
28 Internal voltage source
selection Output 2 (rH) unsigned int. Selection of internal voltage source for PWM output 2 0—1 00 = 1 =
3,3 VDC
12 VDC
29 Reserved, return “0”
30 Modbus network resistor
termination (NBT) unsigned int. Set device as ending the line or not by connecting NBT 0—1 00 = 1 =
NBT disconnected
NBT connected
31 Output 1 overwrite
value ( T ) unsigned int. Overwrite value for output 1. Active only if Holding register 8 is set to 1 0—1.000 00 = 1.000 =
0 %
100 %
32 Output 2 overwrite value
(rH) unsigned int. Overwrite value for output 2. Active only if Holding register 9 is set to 1 0—1.000 00 = 1.000 =
0 %
100 %
33 Reserved, returns “0”
34 Active light level unsigned int. e ambient light level above which ‘Active’ is indicated
in input register 6 0—32.000 100 1.000 = 1.000 lx
35 Standby light level unsigned int. e ambient light level below which ‘Standby’ is
indicated in input register 6 0—32.000 10 10 = 10 lx
36 Modbus registers reset unsigned int. Resets Modbus Holding registers to default values.
When finished this register is automatically reset to ‘0’ 0—1 00 = 1 =
Idle
Reset Modbus
registers
37—40 Reserved, return “0”
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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TRANSPORT AND STORAGE
Avoid shocks and extreme conditions; stock in original packing.
WARRANTY 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
damp 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.
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