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Siemens SIMATIC S7 System Manual page 688

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Technical specifications
A.2 S7-200 SMART CPUs
Technical data
Isolation (external signal
to PLC logic)
Cable type
Table A- 13
Power supply
Technical data
Voltage range
Line frequency
Input
CPU only at
current
max. load
CPU with all
expansion
accessories
at max. load
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- 14
Sensor power
Technical data
Voltage range
Output current rating
(max.)
Maximum ripple noise
(<10 MHz)
Isolation (CPU logic to
sensor power)
688
CPU ST20 DC/DC/DC
Ethernet: Transformer
isolated, 1500 V AC
RS485: none
Ethernet: CAT5e shielded
RS485: PROFIBUS network
cable
CPU ST20 DC/DC/DC
20.4 to 28.8 V DC
--
160 mA at 24 V DC (without
driving 300 mA sensor power)
430 mA at 24 V DC (with
driving 300 mA sensor power)
720 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 ST20 DC/DC/DC
20.4 to 28.8 V DC
300 mA (short circuit
protected)
< 1 V peak to peak
Not isolated
CPU SR20 AC/DC/Relay
Ethernet: Transformer
isolated, 1500 V AC
RS485: none
Ethernet: CAT5e shielded
RS485: PROFIBUS network
cable
CPU SR20 AC/DC/Relay
85 to 264 V AC
47 to 63 Hz
210 mA at 120 V AC (with
300 mA power sensor output)
90 mA at 120 V AC (without
300 mA power sensor output)
120 mA at 240 V AC (with
300 mA power sensor output)
60 mA at 240 V AC (without
300 mA power sensor output)
290 mA at 120 V AC170 mA
at 240 V AC
9.3 A at 264 V AC
1500 V AC
0.5 mA max.
30 ms at 120 V AC 200 ms at
240 V AC
3 A, 250 V, slow blow
CPU SR20 AC/DC/Relay
20.4 to 28.8 V DC
300 mA (short circuit
protected)
< 1 V peak to peak
Not isolated
System Manual, V2.3, 07/2017, A5E03822230-AF
CPU CR20s AC/DC/Relay
Ethernet: Not available
RS485: None
Ethernet: Not available
RS485: PROFIBUS network
cable
CPU CR20s AC/DC/Relay
85 to 264 V AC
47 to 63 Hz
90 mA at 120 V AC
60 mA at 240 V AC
--
16.3 A at 264 V AC
1500 V AC
0.5 mA max.
30 ms at 120 V AC
200 ms at 240 V AC
3 A, 250 V, slow blow
CPU CR20s AC/DC/Relay
Not available
Not available
Not available
Not available
S7-200 SMART

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