User Documentation

Product Installation / Operation, ACT20-FEED-IN-PRO
72 1066540000/08/12-2018
7.7.3 Electrical connections
Terminal Function Connector
41 NO
status relay
42 COM
43 NC
44
51 GND
power supply
52 +24 V DC
53 +24 V DC
backup power supply
54 GND
81 collective error contact
Weidmüller DIN rail bus CH20M
82 +24 V DC
83 GND
84
85
Table 7-14: Electrical connections
7.7.4 Specifications
Features
• The power feed-in unit ACT20-FEED-IN-PRO detects errors from any of the devices mounted on the
Weidmüller DIN rail bus CH20M and transmits a collective alarm to an external control system via the
internal status relay.
• Optional connection of two power supplies - a primary power supply and a backup power supply.
• Redundant power supply can be obtained by mounting two feed-in units connected to two separate power
supplies.
• The status relay will be energised when the following conditions are met:
- The power supply is present on terminal 51 and 52.
- The backup power supply is present on terminal 53 and 54.
If the backup power supply is not required, the included jumper must be employed between terminal 52
and 53.
- There are no error signals from the devices connected to the Weidmüller DIN rail bus.
• The device can be mounted in the safe area (non-hazardous) and in zone 2 / division 2.
• The status of the power supply and the backup power supply is indicated by two green LEDs.
• A malfunction is indicated by a red LED.