Siemens Simatic S7 Series

Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
588 System Manual, 09/2015, A5E03822230-AC
Technical data
CPU ST40
DC/DC/DC
CPU SR40
AC/DC/Relay
CPU CR40
AC/DC/Relay
Individually selectable on
each channel (points I1.6
and greater):
ms: 0, 6.4, 12.8
Individually selectable on
each channel (points I1.6
and greater):
ms: 0, 6.4, 12.8
Individually selectable on
each channel (points I1.6
and greater):
ms: 0, 6.4, 12.8
HSC clock input rates (max.)
(Logic 1 Level = 15 to 26 V DC)
4 HSC at 200 k Hz for
single phase
2 HSC at 100 K Hz for A/B
phase
4 HSC at 200k Hz for single
phase
2 HSC at 100 K Hz for A/B
phase
4 HSC at 100k for Hz for
single phase
2 HSC at 50 K Hz for A/B
phase
Number of inputs on simultane-
ously
24 24 24
Cable length (max.), in meters I0.0 to I0.3:
Shielded (only):
• 500 m normal (low-
speed) inputs,
• 50 m HSC (high-speed)
inputs
All inputs:
Shielded:
• 500 m normal inputs
• 50 m HSC inputs
Unshielded:
• 300 m normal inputs
All inputs:
Shielded:
• 500 m normal inputs
• 50 m HSC inputs
Unshielded:
• 300 m normal inputs
All other inputs:
Shielded:
• 500 m normal inputs
Unshielded:
• 300 m normal inputs
Table A- 42 Digital outputs
Technical data
CPU ST40
DC/DC/DC
CPU SR40
AC/DC/Relay
CPU CR40
AC/DC/Relay
Number of outputs
16
16
16
Type Solid state - MOSFET
(sourcing)
Relay, dry contact Relay, dry contact
Voltage range 20.4 to 28.8 V DC 5 to 30 V DC or 5 to 250 V
AC
5 to 30 V DC or 5 to 250 V
AC
Logic 1 signal at max. current
20 V DC min.
--
--
Logic 0 signal with 10 KΩ load
0.1 V DC max.
--
--
Rated current per point (max.) 0.5 A 2 A 2 A
Rated current per common
(max.)
6 A 10 A 10 A
Lamp load 5 W 30 W DC / 200 W AC 30 W DC / 200 W AC
ON state resistance
0.6 Ω max.
0.2 Ω max. when new
0.2 Ω max. when new
Leakage current per point
10 μA max.
--
--
Surge current
8 A for 100 ms max.
7 A with contacts closed
7 A with contacts closed
Overload protection
No
No
No