Siemens Simatic S7 Series

Technical specifications
A.6 Digital signal boards
S7-200 SMART
638 System Manual, 09/2015, A5E03822230-AC
Technical data
SB Digital 2 x Inputs / 2 x Digital Outputs (DT04)
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
Table A- 127 Digital outputs
Technical data
SB Digital 2 x Inputs / 2 x Digital Outputs (DT04)
Number of outputs
2
Output type
Solid state - MOSFET (sourcing)
Voltage range
20.4 to 28.8 V DC
Logic 1 signal at max. current
20 V DC min.
Logic 0 signal at max. current
0.1 V DC max.
Rated current per point (max.)
0.5 A
Rated current per common
(max.)
1 A
Lamp load
5 W
On state contact resistance
0.6 Ω max.
Leakage current per point
10 μA max.
Surge current
5 A for 100 ms max.
Overload protection
No
Isolation (field side to logic)
500 V AC for 1 minute
Isolation groups 1
Inductive clamp voltage
L+ minus 48 V, 1 W dissipation
Switching delay 2 μs max. off to on
10 μs max. on to off
Output behavior in STOP
Last value or substitute value (default value 0)
Number of outputs on simulta-
neously
2
Cable length (max.), in meters Shielded: 500 m normal inputs
Unshielded: 150 m normal inputs