Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Digital input channels | 16 |
| Input voltage | 48 V DC to 125 V DC |
| Signal "0" input voltage | -146 V DC to +15 V DC |
| Signal "1" input voltage | 30 V DC to 146 V DC |
| Load voltage L+ | 48 V DC rated; 48 V to 125 V permissible |
| Front connector | 20-pin |
| Backplane bus input current | 40 mA max. from 5 V DC |
| Power loss | 4.3 W typ. |
| Digital input status indicator | Green, available |
| Backplane bus isolation | Yes; optocoupler |
Applications
- Digital signal acquisition: Acquires digital DC signals through 16 isolated digital inputs.
Key Features
- Digital input channels: 16 isolated digital inputs.
- Input voltage: DC input; rated value 48 V and 48 V DC to 125 V DC.
- Signal thresholds: Signal "0": -146 V DC to +15 V DC; signal "1": 30 V DC to 146 V DC.
- Load voltage: Rated load voltage L+ is 48 V DC, with a permissible range of 48 V to 125 V.
- Front connection: Required 20-pin front connector.
- Isolation and diagnostics: Digital inputs are isolated from the backplane bus by an optocoupler. The green digital input status indicator is available; diagnostics function and diagnostic alarm are not available.
Frequently Asked Questions
1. How many digital inputs does the 6ES7321-1CH20-0AA0 have?
It has 16 isolated digital inputs.
2. What input voltage does this module support?
The input voltage is DC, with a rated value of 48 V and a range of 48 V DC to 125 V DC.
3. What connector is required?
A required 20-pin front connector is used.
4. Does the module provide diagnostics?
No. The diagnostics function, diagnostic alarm, hardware interrupt, and group error SF indicator are not available.
