Siemens SIMATIC S7 - Page 764

Technical specifications
A.6 Digital signal boards
S7-200 SMART
764 System Manual, V2.3, 07/2017, A5E03822230-AF
Table A- 134 Digital inputs
Technical data
SB Digital 2 x Inputs / 2 x Digital Outputs (DT04)
Number of inputs
2
Type Sink (IEC Type 1 sink)
Rated voltage
24 V DC at 4 mA, nominal
Continuous permissible voltage 30 V DC max.
Surge voltage
35 V DC for 0.5 sec.
Logic 1 signal (min.)
15 V DC at 2.5 mA
Logic 0 signal (max.)
5 V DC at 1 mA
Isolation (field side to logic)
500 V AC for 1 minute
Isolation groups
1
Filter times Individually selectable on each channel:
μs: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8
ms: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8
Number of inputs on simultane-
ously
2
Cable length (max.), in meters Shielded: 500 m normal inputs
Unshielded: 300 m normal inputs