Technical Summary
| Product type designation | SM 1221, DI 16x 24 V DC |
|---|---|
| Number of digital inputs | 16 |
| Input voltage, rated value (DC) | 24 V |
| Input current for signal "1", typ. | 4.1 mA |
| Input current for signal "0", max. (permissible quiescent current) | 0.5 mA |
| Power loss, typ. | 3.2 W |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Diagnostics function | Yes |
| IP degree of protection | IP20 |
Key Features
Product type designation
SM 1221, DI 16x 24 V DC
SM 1221, DI 16x 24 V DC
Digital inputs
16
16
Input voltage
Rated value (DC): 24 V
Rated value (DC): 24 V
Input characteristic curve
IEC 61131, type 1
IEC 61131, type 1
Diagnostics
Diagnostics function: Yes; diagnostics indication LED for status of the inputs and for maintenance: Yes
Diagnostics function: Yes; diagnostics indication LED for status of the inputs and for maintenance: Yes
Protection
IP20
IP20
Applications
24 V DC input signal acquisition
Digital input connection for 24 V DC sink/source signals.
Digital input connection for 24 V DC sink/source signals.
Frequently Asked Questions
What is Siemens 6ES7221-1BH50-0XB0?
It is a SIMATIC S7-1200 G2 SM 1221 digital input module.
How many digital inputs does 6ES7221-1BH50-0XB0 have?
It has 16 digital inputs.
What input voltage does 6ES7221-1BH50-0XB0 use?
The rated input voltage is 24 V DC.
What are the cable length limits for 6ES7221-1BH50-0XB0?
The maximum cable length is 500 m for shielded cable and 300 m for unshielded cable.
