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1.5.5.1 Using an External Relay
In case of excessive use or use under elevated current or voltage, you must
insert a relay capable of supporting the load for a higher number of
operations.
The coil for the repeater relay must always be equipped with transient
suppressors, as can be seen in Figures 9 and 10.
It is also suggested to use a transient suppressor on the load in order to
prolong the life of the external relay.
VEXT_relay
VEXT _relay
coil for repeater relay
Transient Suppressor
:
Vext AC = Mov75Vac
Vext DC = diodo 1N4004
Relay 1
Mov75Vac
Transient
Suppressor
Vac
Vac
C
NC NO
coil for electrical locking device/repeater
Figure 11: Connection for Output Relay 1 (NO) – External Relay
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