Siemens SIMATIC S7 - Page 709

Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
709
Technical data
CPU ST40 DC/DC/DC
CPU SR40 AC/DC/Relay
CPU CR40s AC/DC/Relay
Number of inputs on sim-
ultaneously
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- 46 Digital outputs
Technical data
CPU ST40 DC/DC/DC
CPU SR40 AC/DC/Relay
CPU CR40s AC/DC/Relay
Number of outputs
16
16
16
Type Solid state - MOSFET (sourc-
ing)
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 com-
mon (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
Isolation (field side to
logic)
500 V AC for 1 minute 1500 V AC for 1 minute (coil
to contact)
None (coil to logic)
1500 V AC for 1 minute (coil
to contact)
None (coil to logic)
Isolation resistance
--
100 MΩ min. when new
100 MΩ min. when new
Isolation between open
contact
-- 750 V AC for 1 minute 750 V AC for 1 minute
Isolation groups
2
4
4
Inductive clamp voltage L+ minus 48 V DC, 1 W dissi-
pation
-- --