Siemens Simatic S7 Series System Manual

Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
573
Table A- 14 Sensor power
Technical data
CPU ST20 DC/DC/DC
CPU SR20 AC/DC/Relay
Voltage range
20.4 to 28.8 V DC
20.4 to 28.8 V DC
Output current rating (max.) 300 mA (short circuit protected) 300 mA (short circuit protected)
Maximum ripple noise (<10
MHz)
< 1 V peak to peak < 1 V peak to peak
Isolation (CPU logic to sensor
power)
Not isolated Not isolated
A.2.1.2
Digital inputs and outputs
Table A- 15 Digital inputs
Technical data
CPU ST20 DC/DC/DC
CPU SR20 AC/DC/Relay
Number of inputs
12
12
Type SinkSource (IEC Type 1 sink, except I0.0
to I0.3, I0.6 to I0.7)
Sink/Source (IEC Type 1 sink)
Rated voltage
24 V DC at 4 mA, nominal
24 V DC at 4 mA, nominal
Continuous permissible voltage
30 V DC, max.
30 V DC, max.
Surge voltage
35 V DC for 0.5 sec
35 V DC for 0.5 sec.
Logic 1 signal (min.) I0.0 to I0.3, I0.6 to I0.7: 4 V DC at 8 mA
Other inputs: 15 V DC at 2.5 mA
15 V DC at 2.5 mA
Logic 0 signal (max.) I0.0 to I0.3, I0.6 to I0.7: 1 V DC at 1 mA
Other inputs: 5 V DC at 1 mA
5 V DC at 1 mA
Isolation (field side to logic)
500 V AC for 1 minute
500 V AC for 1 minute
Isolation groups
1
1
Filter times Individually selectable on each channel
(points I0.0 to I1.3):
μs: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8
ms: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8
Individually selectable on each channel
(points I0.0 to I1.3):
μs: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8
ms: 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 12.8
HSC clock input rates (max.)
(Logic 1 Level = 15 to 26 V DC)
4 HSC at 200 KHz for single phase
2 HSC at 100 KHz for A/B phase
4 HSC at 200 KHz for single phase
2 HSC at 100 KHz for A/B phase
Number of inputs on simultane-
ously
12 12
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
I0.6 to I0.7:
• Shielded (only): 500 m normal inputs
All other inputs:
• Shielded: 500 m normal inputs
• Unshielded: 300 m normal inputs

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.