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100 Service Manual Part No.: 4417340 Revision 1
954 SmartServo FlexLine
7.3.6.3.2 Relay Mode
Each individual relay can be set to be energized or de-energized during
operation, by setting the [Relay Mode] entity to <Energized> or <De-
energized> respectively.
If the [Relay Mode] entity is set to <Energized>, the relay coil will be
energized when the relay state is <Deactivated>, and the relay coil will
be de-energized when the relay state is <Activated>.
If the [Relay Mode] entity is set to <De-Energized>, the relay coil will be
de-energized when the relay state is <Deactivated>, and the relay coil
will be energized when the relay state is <Activated>.
The <Energized> option is used for fail-safe operation whereas the <De-
Energized> option is used for non-fail-safe operation.
☛
Set each individual relay to the required configuration, by selecting
the proper entities. See also next overview (fail-safe configuration is
coloured).
Physically
Configured
Relay Mode Relay State
Physical Result
Normally Open
(NO)
De-Energized Activated Closed
Deactivated Open
Energized Activated Open
Deactivated Closed
Normally Closed
(NC)
De-Energized Activated Open
Deactivated Closed
Energized Activated Closed
Deactivated Open
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