The EM231 NTC module is an analog input expansion module for the CTS7‑200 PLC system, offering four channels: two for NTC or PT100 temperature sensors and two for voltage/current signals. It is designed for applications such as sterilization equipment and central air‑conditioning that require temperature and pressure measurements.
The manual details power requirements, wiring diagrams, configuration settings, and how to read input values via PLC programming software. Installation steps include connecting the L+ power supply, linking the module to the CPU bus, and wiring sensor inputs according to the terminal diagram. This manual is written in Chinese.
| Power consumption | 0.12 W |
|---|---|
| Supply voltage range (L+) | 20.4 – 28.8 VDC |
| Temperature resolution | 0.1 °C / 10.15 °F |
| Voltage resolution | 15 bits + sign |
| Maximum sensor wire length | 100 m |
| Noise suppression | 85 dB (50 Hz/60 Hz/400 Hz) |
| Input filter attenuation | -3 dB @ 1 kHz |
The module operates from a L+ supply voltage of 20.4 V to 28.8 VDC.