E2638-C2H4
Rev 21.06.2021
NOTE! The outputs are not galvanically isolated from the external power supply and share a
common 0V. Allowed load resistance limits are stated in the Specifications table. To power
the instrument from an external power source, connect terminals 0V and +U to the source.
If the integrated mains power supply module is used, connect terminals L and N to the
mains.
NOTE! Actuator short-circuits should be avoided, to protect the instrument relays, use
external fuses or safety switches.
Correct and incorrect cabling for 24 VAC
12
