Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Digital input channels | 8 |
| Input voltage type | AC |
| Rated input voltage | 230 V; 220/230 V AC (47 Hz to 63 Hz) |
| Signal "0" input voltage | up to 20 V AC |
| Signal "1" input voltage | 79V AC or more |
| Input current for signal "1", typ. | 2.5 mA |
| Channel potential separation | Optocoupler; in groups of 1; 8 groups |
| Connection method | Plug-in I/O terminals |
| Power loss, typ. | 3 W |
Applications
- AC digital signal acquisition: Acquires 8 isolated AC digital input signals.
Key Features
- Digital input channels: 8 digital inputs with AC input voltage.
- Input voltage: Rated input value: 230 V; 220/230 V AC (47 Hz to 63 Hz). Signal "0": up to 20 V AC; signal "1": 79V AC or more.
- Channel isolation: Digital inputs have potential separation by optocoupler, in groups of 1; 8 groups.
- Input timing: For standard inputs, the transition from "0" to "1" is max. 15 ms.
- Connection and dimensions: Plug-in I/O terminals; dimensions: 71.2 mm width, 80 mm height, and 62 mm depth.
- Spare-part designation: The product description identifies this module as a spare part.
Frequently Asked Questions
1. How many digital inputs does Siemens 6ES7221-1EF22-0XA0 have?
It has 8 digital inputs.
2. What input voltage does the 6ES7221-1EF22-0XA0 use?
The input voltage is AC, with a rated value of 230 V; 220/230 V AC (47 Hz to 63 Hz).
3. Are the digital inputs isolated?
Yes. The digital inputs have potential separation by optocoupler, in groups of 1; 8 groups.
4. What connection method does this EM 221 module use?
It uses plug-in I/O terminals.
