Product Overview
Technical Summary
| Product type | SIMATIC S7-200 digital input EM 221 spare part |
|---|---|
| Digital inputs | 8 |
| Input voltage | 220/230 V AC (47 Hz to 63 Hz) |
| Signal "0" | up to 20 V AC |
| Signal "1" | 79V AC or more |
| Potential separation | Optocoupler; between the channels, in groups of 1; 8 groups |
| Connection method | Plug-in I/O terminals |
| Connectable encoders | 2-wire sensor |
| Product lifecycle | Start of final year of support |
Key Features
8 digital inputs with an input characteristic curve in accordance with IEC 61131, type 1.
Rated 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.
Digital inputs have potential separation with an Optocoupler, between the channels, in groups of 1; 8 groups.
Maximum cable length is 500 m for shielded cables and 300 m for unshielded cables.
Plug-in I/O terminals are supported, and 2-wire sensors are connectable with permissible quiescent current of 1 mA maximum.
Dimensions: 71.2 mm width, 80 mm height, and 62 mm depth. Weight, approx.: 160 g.
Frequently Asked Questions
Which exact product is this line item?
It is Siemens 6ES7221-1EF22-0XA0, SIMATIC S7-200 digital input EM 221, an isolated 8 DI, 120/230 V AC spare part.
What input voltage does this module use?
Its rated value is 230 V; 220/230 V AC at 47 Hz to 63 Hz. Signal "0" is up to 20 V AC, and signal "1" is 79V AC or more.
How are the digital inputs separated?
The digital inputs have potential separation with an Optocoupler, between the channels, in groups of 1; 8 groups.
What should be included in a quotation request?
Provide the exact line item, requested quantity, destination, schedule context, and any additional BOM lines for the project quotation.
