tM-TH8 CR
8-channel Isolation Thermistor Input Module with High Voltage Protection
- 8-channel Thermistor Input
- 120 VDC Overvoltage Protection
- Resolution: 16 bits
- User-defined Thermistor Types
- 2 kV ESD and 4 kV EFT Protecton
- Dual Watchdog
- 2500 VDC Intra-module Isolation
- Wide Operating Temperature Range: -25 ~ +75°C
INTRODUCTION
The tM-TH8 is an 8-channel isolated thermistor input module that can be used for measuring temperatures via a thermistor. Many types of thermistor are supported and user-defined types can be added by specifying the Steinhart coefficients, if necessary. The added 2500 VDC intra-module isolation and 120 VDC overvoltage protection for the thermistor on the tM-TH8 ensure that the module will operate with higher reliability.
APPLICATIONS
- Industrial Automation
- Industrial Machinery
- Building Automation
- Food and Beverage Systems
- Semiconductor Fabrication
- Control Systems
I/O SPECIFICATIONS
Analog Input
Input Channels: 8
Types: Thermistor
Thermistor Type: Precon ST-A3, Fenwell U, YSI L100, YSI L300, YSI L1000, YSI B2252, YSI B3000, YSI B5000, SI B6000, YSI B10000, YSI H10000, YSI H30000, User-defined
Resolution: 16-bit
Sampling Rate: 8 Hz total
Accuracy: +/-1%
Overvoltage Protection: 120 VDC
Open Wire Detection: Yes
SYSTEM SPECIFICATIONS
Communication
Interface: RS-485
Format: (N, 8, 1), (N, 8, 2), (O, 8, 1), (E, 8, 1)
Baud Rate: 1200 ~ 115200 bps
Protocol: DCON, Modbus/RTU, Modbus/ASCII
Dual Watchdog: Yes, Module (2.3 seconds), Communication (Programmable)
LED Indicators
Power: 1 LED as Power Indicator
Isolation
Intra-module Isolation, Field-to-Logic: 2500 VDC
EMS Protection
ESD (IEC 61000-4-2): 2 kV Contact for Each Terminal
3 kV Air for Random Point
EFT (IEC 61000-4-4): +/-4kV for Power
Power Requirements
Reverse Polarity Protection: Yes
Powered from Terminal Block: Yes, 10 ~ 30 VDC
Consumption: 1 W Max.
Mechanical
Dimensions (W x L x H): 52 mm x 98 mm x 27 mm
Installation: DIN-Rail Mounting
Environment
Operating Temperature: -25 °C ~ +75 °C
Storage Temperature: -30 °C ~ +75 °C
Humidity: 10 ~ 95% RH, Non-condensing