Siemens SIMATIC S7 - Page 707

Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
707
Table A- 43 Power supply
Technical data
CPU ST40 DC/DC/DC
CPU SR40 AC/DC/Relay
CPU CR40s AC/DC/Relay
Voltage range
20.4 to 28.8 V DC
85 to 264 V AC
85 to 264 V AC
Line frequency -- 47 to 63 Hz 47 to 63 Hz
Input
current
(max.
load)
CPU only 190 mA at 24 V DC (without
driving 300 mA sensor power)
470 mA at 24 V DC (with
driving 300 mA sensor power)
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)
150 mA at 120 V AC
80 mA at 240 V AC
CPU with all
expansion
accessories
680 mA at 24 V DC 300 mA at 120 V AC
190 mA at 240 V AC
--
Inrush current (max.)
11.7 A at 28.8 V DC
16.3 A at 264 V AC
16.3 A at 264 V AC
Isolation (input power to
logic)
-- 1500 V AC 1500 V AC
Ground leakage, AC line
to functional earth
-- 0.5 mA 0.5 mA
Hold up time (loss of pow-
er)
20 ms at 24 V DC 30 ms at 120 V AC
200 ms at 240 V AC
30 ms at 120 V AC
200 ms at 240 V AC
Internal fuse, not user
replaceable
3 A, 250 V, slow blow 3 A, 250 V, slow blow 3 A, 250 V, slow blow
Table A- 44 Sensor power
Technical data
CPU ST40 DC/DC/DC
CPU SR40 AC/DC/Relay
CPU CR40s AC/DC/Relay
Voltage range
20.4 to 28.8 V DC
20.4 to 28.8 V DC
Not available
Output current rating
(max.)
300 mA 300 mA Not available
Maximum ripple noise
(<10 MHz)
< 1 V peak to peak < 1 V peak to peak Not available
Isolation (CPU logic to
sensor power)
Not isolated Not isolated Not available