If the expansion units are controlled via the 3ZY12 device connector, additional feeding of the
control supply voltage (A1/A2) at one of the output expansions leads to a fault in the system
conguration.
5.4.2 Function description
The operating state of the 3RQ1 output expansions is displayed on the DEVICE LED.
Depending on the variant used, the 3RQ1 output expansions have 1NO/1NC, 2NO/1NC, 2NO/
2NC or 4NO/1NC. The output expansions can be controlled via any output of the basic unit via
(A1). The NC circuits of the 3RQ1 are used to monitor the output expansion or for additional
switching.
In the 24 V DC variants, the expansion units can be controlled and evaluated via the 3ZY12
device connectors.
5.4.3 Display of the operating state
Display of the operating state
The operating state and functioning of the device are indicated by an LED:
• (1) DEVICE
Operating states
LED State Meaning
DEVICE Control supply voltage Control state of the relay
O O Inactive position
Green ON Active position
5.4.4 Device features
Article number
Article number Number of NO /
NC contacts
Voltage supply Width
3RQ1000-xEB00 1NO / 1NC 24 V DC 17.5 mm
3RQ1000-xEB00 1NO / 1NC 24 ... 240 V AC/DC 17.5 mm
3RQ1000-xGB00 2NO / 1NC 24 V DC 17.5 mm
3RQ1000-xGB00 2NO / 1NC 24 ... 240 V AC/DC 17.5 mm
3RQ1000-xHB00 2NO / 2NC 24 V DC 22.5 mm
3RQ1000-xHB00 2NO / 2NC 24 ... 240 V AC/DC 22.5 mm
3SK1 / 3RQ1 devices
5.4 3RQ1 output expansion
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 99
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