The JNG GBEM231 analog input expansion module manual provides specifications, wiring, calibration, configuration and address assignment details.
The GBEM231 series includes two variants: the EM231‑4AI with four analog input channels and the EM231‑8AI with eight channels. Each channel can acquire voltage (±2.5 V, ±5 V, 10 V) or current (0‑20 mA) signals, with configurable input ranges via DIP switches.
The manual covers product selection, physical dimensions, technical parameters, wiring diagrams, calibration procedures, DIP‑switch configuration, data format, address allocation, and troubleshooting tips for proper installation and operation of the modules. This manual is written in Chinese.
| Input channels (EM231‑4AI) | 4 |
|---|---|
| Input channels (EM231‑8AI) | 8 |
| Supply voltage range | 20.4 VDC – 28.8 VDC |
| Maximum input voltage | 30 VDC |
| Maximum input current | 32 mA |
| Input impedance (voltage) | >2 MΩ |
| Dimensions (W×H×D) | 71.2 mm × 80 mm × 62 mm |
| Weight (EM231‑4AI) | 183 g |
| Data format | 12‑bit (11 bits data + 1 bit sign) |