User Documentation

Product Installation / Operation, ACT20-FEED-IN-PRO
70 1066540000/08/12-2018
7.7 ACT20-FEED-IN-PRO
7.7.1 Description
The power feed-in unit ACT20-FEED-IN-PRO supplies the devices on the CH20M DIN rail bus with 24 V DC.
At the same time, the ACT20-FEED-IN-PRO device reads the group error contact – optionally provided by
the installed devices – from the CH20M rail bus and sends a message through the status relay to the
external controller. Optionally, two power supplies can be connected for the primary and secondary supplies
(backup). An installation in Zone 2 / Division 2 is also possible. Three LEDs show the status of the power
supply and the error status.
The ACT20-FEED-IN-PRO can supply a maximum of 4 A to feed up to 120 devices mounted on a CH20M
rail bus. Quick identification of errors on the DIN rail bus is through the internal status relay. The ACT20-
FEED-IN-PRO device immediately recognises and displays when a power supply has failed. The supply is
then switched automatically to the redundant power supply.
The following Power Feed-In Unit is available:
Order No. Type Description
8965500000
2456870000
ACT20-FEED-IN-PRO-S
ACT20-FEED-IN-PRO-P
Power Feed-In Unit