Siemens SIMATIC S7 System Manual page 707

Table A- 43 Power supply
Technical data
Voltage range
Line frequency
Input CPU only
current
(max.
load)
CPU with all
expansion
accessories
Inrush current (max.)
Isolation (input power to
logic)
Ground leakage, AC line
to functional earth
Hold up time (loss of pow-
er)
Internal fuse, not user
replaceable
Table A- 44 Sensor power
Technical data
Voltage range
Output current rating
(max.)
Maximum ripple noise
(<10 MHz)
Isolation (CPU logic to
sensor power)
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
CPU ST40 DC/DC/DC
20.4 to 28.8 V DC
--
190 mA at 24 V DC (without
driving 300 mA sensor power)
470 mA at 24 V DC (with
driving 300 mA sensor power)
680 mA at 24 V DC
11.7 A at 28.8 V DC
--
--
20 ms at 24 V DC
3 A, 250 V, slow blow
CPU ST40 DC/DC/DC
20.4 to 28.8 V DC
300 mA
< 1 V peak to peak
Not isolated
CPU SR40 AC/DC/Relay
85 to 264 V AC
47 to 63 Hz
130 mA at 120 V AC (without
driving 300 mA sensor power)
250 mA at 120 V (with driving
300 mA sensor power)
80 mA at 240 V AC (without
driving 300 mA sensor power)
150 mA at 240 V AC (with
driving 300 mA sensor power)
300 mA at 120 V AC
190 mA at 240 V AC
16.3 A at 264 V AC
1500 V AC
0.5 mA
30 ms at 120 V AC
200 ms at 240 V AC
3 A, 250 V, slow blow
CPU SR40 AC/DC/Relay
20.4 to 28.8 V DC
300 mA
< 1 V peak to peak
Not isolated
Technical specifications
A.2 S7-200 SMART CPUs
CPU CR40s AC/DC/Relay
85 to 264 V AC
47 to 63 Hz
150 mA at 120 V AC
80 mA at 240 V AC
--
16.3 A at 264 V AC
1500 V AC
0.5 mA
30 ms at 120 V AC
200 ms at 240 V AC
3 A, 250 V, slow blow
CPU CR40s AC/DC/Relay
Not available
Not available
Not available
Not available
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