Teracom TSH330 User manual

TSH330_R1.2 – May 2022 Page 1
www.teracomsystems.com
TSH330
IP54 Modbus RTU temperature and humidity sensor
Version 1.2 / May 2022
USER MANUAL

Page 2 TSH330_R1.2 – May 2022
1. Short descripon
TSH330 is an IP54 temperature and humidity sensor with an RS-485 interface. It supports the
Modbus RTU protocol.
The temperature and humidity sensor integrates basic elements plus signal processing and
provides a fully calibrated digital output. A unique capacive element is used for measuring relave
humidity while the temperature is measured by a bandgap element. Both elements are seamlessly
coupled to a 12-bit analog to digital converter. This results in superior signal quality.
The digital sensor is mounted in an IP65-rated enclosure. This provides protecon against
dust and water sprays. A cable gland with locknut and screwless terminal block allows easy cable
installaon.
2. Features
• RS-485 interface carrying up to 32 nods;
• LED indicator for status of communication;
• Changeable bitrate and other communication parameters;
• Firmware update via the interface.
3. Applicaons
• Server room and data centers humidity and temperature logging.
• Environmental quality monitoring and assessment.
• Humidity and temperature monitoring in building management systems.
• Humidity and temperature logging for mobile operator facilities, vineyards,
greenhouses, etc.
4. Specicaons
• Physical characteristics
Dimensions: 65.6 x 99 x 36 mm
Weight: 70 g
• Environmental limits
Operating temperature range: -20 to 60°C
Operating relative humidity range: 5 to 95% (non-condensing)
Recommended operating range is 20% to 80% RH (non-condensing) over –10 °C to 60 °C.
Prolonged operation beyond these ranges may result in a shift of sensor reading, with slow recovery time.
It is possible that in some weather condions the moisture in the air in the lter cap may condense. This may result in a
shi of sensor reading, with slow recovery me.
Storage temperature range: -20 to 60°C
Storage relative humidity range: 5 to 95% (non-condensing)
Ingress protection: IP54
• Power requirements
Input Voltage (including -15/+20% according to IEC 62368-1): 4.5 to 26 VDC
Input Current: 5 mA@5VDC
• Humidity measurements
Accuracy (min): ±3.0 %RH (in 20 to 80 %RH range)
Accuracy (max): ±5.0 %RH (in 5 to 95 %RH range)
Resolution: 0.1 %RH
• Temperature measurements
Accuracy (min): ±0.4 °C (in -10 to +60°C range)
Accuracy (max): ±0.6 °C (in -20 to +60°C range)
Resolution: 0.1 °C
• Warranty
Warranty period: 3 years

TSH330_R1.2 – May 2022 Page 3
5. Pinout
Pin Descripon Corresponding
UTP wires color
Line B- RS485 Blue
Line A+ RS485 Blue/White Tracer
GND Ground (negave) supply Brown
+4.5÷26V Posive power supply Brown/White Tracer
6. Installaon
The device is designed for wall mounng using screws passing through the sloed holes in
the enclosure.
A daisy-chained (linear) topology for mulple sensors should be used. UTP/FTP cables are
mandatory for interconnecon. The last sensor in the chain should have a terminator of 120ohm
installed on the bus. TSH330 has a built-in terminator. To enable it, please close the jumper.
7. Installaon ps
The locaon and the mounng posion of sensors have a direct eect on the accuracy
of measurements. The ps below will ensure good measuring results:
• Sensor shall be installed about 1.2-1.4 m above the floor;
• Avoid exposure to direct sunlight - solar radiation causes measurement inaccuracy;
• For outdoor usage, the sensors should be installed with protection from direct rain;
• Avoid mounting over ventilation shafts and windows/doors;
• Avoid attaching to walls in front of a chimney.
• It is recommended to mount the device in an accessible location for easier
maintenance.
Aenon:
The device should be installed with always lter and gland facing the oor.
8. Status indicator
The status of the device is shown by a single LED, located on the front panel:
• If the LED blinks for a period of 1 second, the sensor works properly;
• If the LED blinks for a period of 3 seconds, there isn‘t communication with the
controller;
• If LED doesn‘t blink, there isn‘t a power supply.

Page 4 TSH330_R1.2 – May 2022
9. Factory default sengs
Disconnect the sensor from the bus (switch o the power supply).
Press and hold the “cong” buon. Don’t release the buon, connecng the sensor to the bus
(switch on the power supply).
The “status” LED will be ON for 3 seconds and aer this will ash for 7 seconds. Aer the 10-th
second the LED will be ON.
Release the buon. The sensor will restart with factory default sengs.
10. Firmware update
The rmware of the sensor can be updated with a Teracom controller which supports
MODBUS RTU or MBRTU-Cong soware. For more details ask your dealer.
11. Modbus address table
Register name R/W FC
PDU
Address
(Decimal)
Logical
address
(Decimal)
Oset
(Decimal) Data size Default Valid values
RS-485 address R/W 03/06 10 40011 40001 16-bit uns. integer 1 1-247
Baud rate * R/W 03/06 11 40012 40001 16-bit uns. integer 19200 2400, 4800, 9600, 19200,
38400, 57600
Parity, data, stop bits * R/W 03/06 12 40013 40001 16-bit uns. integer 1 1=E81, 2=O81, 3=N81
Data order R/W 03/06 13 40014 40001 16-bit uns. integer 1 1=MSWF (MSW, LSW)
2=LSWF (LSW, MSW)
Sub-family number R 3 14 40015 40001 16-bit uns. integer 0xCD
FW version R 3 15 40016 40001 16-bit uns. integer
Vendor URL R 3 18 40019 40001 64 bytes UTF-8 teracomsystems.com
Float test value (MSWF) R 3 82 40083 40001 32-bit oat -9.9(0xC11E6666)
Float test value (LSWF) R 3 84 40085 40001 32-bit oat -9.9(0xC11E6666)
Signed integer test value R 3 86 40087 40001 16-bit sig. integer -999(0xFC19)
Signed integer test value (MSWF) R 3 87 40088 40001 32-bit sig. integer -99999(0xFFFE7961)
Signed integer test value (LSWF) R 3 89 40090 40001 32-bit sig. integer -99999(0xFFFE7961)
Unsigned integer test value R 3 91 40092 40001 16-bit uns. integer 999(0x03E7)
Unsigned integer test value (MSWF) R 3 92 40093 40001 32-bit uns. integer 99999(0x0001869F)
Unsigned integer test value (LSWF) R 3 94 40095 40001 32-bit uns. integer 99999(0x0001869F)
Temperature °C R 3 100 40101 40001 32-bit oat
Humidity %RH R 3 102 40103 40001 32-bit oat
Dew point °C R 3 104 40105 40001 32-bit oat
Temperature °F R 3 200 40201 40001 32-bit oat
Humidity %RH R 3 202 40203 40001 32-bit oat
Dew point °F R 3 204 40205 40001 32-bit oat
Temperature °C x 100 R 3 400 40401 40001 16-bit sig. integer
Humidity %RH x 100 R 3 401 40402 40001 16-bit sig. integer
Dew point °C x 100 R 3 402 40403 40001 16-bit sig. integer
Temperature °F x 100 R 3 500 40501 40001 16-bit sig. integer
Humidity %RH x 100 R 3 501 40502 40001 16-bit sig. integer
Dew point °F x 100 R 3 502 40503 40001 16-bit sig. integer
MSWF - Most signicant word rst - (bits 31 … 16), (bits 15 … 0); LSWF - Least signicant word rst - (bits 15 … 0), (bits 31 … 16);
PDU address - Actual address bytes used in a Modbus Protocol Data unit
A “NaN” value is returned for unavailable oang-point values (e.g. in case of measurement error)
* The sengs will take eect aer restarng the sensor by a power-on reset.
12. Recycling
Recycle all applicable material.
Do not dispose of in the regular household refuse.