Siemens SIMATIC ET 200PA SMART Operating Instructions Manual page 143

Wiring and block diagram
①
②
③
④
Load resistances and actuators
The load resistances of the actuators must be in the range from 48 Ω to 4 kΩ. For larger values,
a suitable resistor must be connected in parallel directly to the connecting terminals of the
actuator (in so doing, observe the maximum power loss when signal "1" is present).
The lower response threshold of the actuator must be known in the operating temperature
range or be determined experimentally. The output voltage of the module when signal "0" is
present can be influenced through parallel connection of a resistor directly to the actuator
connecting terminals. The maximum power loss when signal "1" is present must be observed
when selecting the resistor.
● Load resistances between 10 kΩ and 1 MΩ can be signaled as a short-circuit to L+.
● Outputs or loads without protection circuit greater than 1 MΩ are signaled as a "wire break".
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB
Status displays - green
Group error display - red (SF_LED)
Channel numbers
Numbers 0 to 7 on the right side correspond to channel numbers 8 to 15
Channel status
Backplane bus interface
ET 200PA SMART I/O modules
10.3 Digital output modules
143