Brochure/Catalogue

K.8 2729490000
Accessories
K
ACT20 power-feed modules for rail bus
Power-feed module for the CH20M DIN rail bus
4 A supply with backup supply and
error analysis
The power-feed unit ACT20-FEED-IN-PRO-S supplies the
devices on the CH20M DIN rail bus with 24 V DC. At the
same time, the FEED-IN 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 FEED-IN-PRO can supply a maximum of 4 A to feed
up to 120 devices mounted on a CH20M rail bus. Quick
identication of errors on the DIN rail bus is through the
internal status relay. The 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.
Weidmüller offers a compact and narrow 6 mm feed-in
module as an alternative. This wires the terminal level
directly to the DIN rail bus. Up to 80 modules can be fed
with a maximum available current of 2.5 A.