120/230 Vac Digital Ac Inputs - Siemens SIMATIC S7-1200 Manual

Note
When switching frequencies above 20 KHz, it is important that the digital inputs receive a
square wave. Consider the following options to improve the signal quality to the inputs:
• Minimize the cable length
• Change a driver from a sink only driver to a sinking and sourcing driver
• Change to a higher quality cable
• Reduce the circuit/components from 24 V to 5 V
• Add an external load at the input
Table A- 26 HSC clock input rates (max.)
Technical data
CPU 1211C
CPU 1212C
CPU 1214C, CPU 1215C
CPU 1217C
High-speed (200 KHz) SB
Standard-speed SB
Logic 1 level = 15 to 26 VDC
1
A.4.2

120/230 VAC digital AC inputs

Table A- 27 120/230 VAC digital inputs
Technical data
Type
Rated voltage
Continuous permissible voltage
Surge voltage
Logic 1 signal (min.)
Logic 0 signal (max.)
Leakage current (max.)
Isolation (field side to logic)
Isolation groups
1
Input delay times
Connection of 2 wire proximity sensor (Bero) (max.)
Easy Book
Manual, 03/2014, A5E02486774-AF
A.4 Specifications for the digital inputs and outputs
Single phase
100 KHz
100 KHz (Ia.0 to Ia.5) and
30 KHz (Ia.6 to Ia.7)
100 KHz (Ia.0 to Ia.5) and
30 KHz (Ia.6 to Ib.5)
1 MHz (DIb.2 to DIb.5)
200 kHz
30 kHz
SM
IEC Type 1
120 VAC at 6 mA, 230 VAC at 9 mA
264 VAC
N/A
79 VAC at 2.5 mA
20 VAC at 1 mA
1 mA
1500 VAC for 1 minute
4
Typical: 0.2 to 12.8 ms, user selectable
•
Maximum: --
•
1 mA
Technical specifications
Quadrature phase
80 KHz
80 KHz (Ia.0 to Ia.5) and
20 KHz (Ia.6 to Ia.7)
80 KHz (Ia.0 to Ia.5) and
20 KHz (Ia.6 to Ib.5)
1 MHz (DIb.2 to DIb.5)
160 kHz
20 kHz
303