User manual

6 DetaileddescriptionsofI/Omodules | Digital relay output module UR20-4RO-CO-255
221Manual u-remote1432790000/08/12.2015
6.28 Digital relay output module UR20-4RO-CO-255
DigitalrelayoutputmoduleUR20-4RO-CO-255(OrderNo.1315550000)
The digital relay output module UR20-4 RO-CO-255 can
control up to 4 actuators each with a maximum of 6A.
Eachconnector features a potential-free changeover contact.
A status LED is assigned to each channel. The relay coils are
supplied with power from the output current path (I
OUT
).
ATTENTION
When using relay modules UR20-4RO-CO-255 in explosive
atmosphere:
– Condensation shall be avoided.
– If the switching voltage exceeds 63V, a transient pro-
tection device shall be provided that limits the transients
to a peak voltage of 497V or less.
1
2
3
4
2
1
3
4
1
2
3
4
2
4
3
1
2
4
3
1
4RO·CO255
COM 0
NC 1
NC 0
COM 1
NC 2
COM 2
NC 3
COM 3
NO 0
NO 1
NO 2
NO 3
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≃
≃
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Connection diagram UR20-4RO-CO-255