This document is the user manual for the EC20-4AM analog input/output module, which describes the interface description, interface specifications, system integration, and wiring instructions of the module.
The EC20-4AM is an analog input/output module for the EC20 series programmable controller. It connects to the system via an expansion cable and provides two analog input channels and two analog output channels, each configurable for voltage or current signals.
The manual describes the module's interface, wiring requirements, power specifications, performance parameters, buffer (BFM) settings, example applications, and procedures for running checks, fault diagnostics, and warranty information. This manual is written in Chinese.
| Voltage input range | -10 V to +10 V (impedance 200 kΩ) |
|---|---|
| Current input range | -20 mA to +20 mA (impedance 250 Ω) |
| Voltage output range | -10 V to +10 V (load ≥2 kΩ) |
| Current output range | 0 mA to 20 mA (load ≤500 Ω) |
| AD conversion speed | 15 ms/channel normal, 8 ms/channel fast |
| DA conversion speed | 6 ms/channel |