Yellow LED for each
relay (E)
Indicates the relay status (LED on = energised,
LED off = de-energised). The relay coils are
continuously monitored in both energised and de-
energised states.
Fault LED (F)
Indicates a fault condition. This is also shown on
the Node Controller Module LED and the Display
Module System Fault LED (if fitted).
This LED also indicates when a relay module is
unconfigured e.g. at power up the Led in on until
the node controller has sent the relay
configuration to the relay module.
Relay Lamp Test
switch (G)
When pressed, checks that all the LEDs on the
Relay Output Module are functioning.
4.5.2 Configuring the Relay Output Module
The physical order of the modules on the Bus Rail is not important, but, in order to reduce interference
with the input channels when switching heavy loads, we advise you to place Relay Output Modules at
the right-hand end of the DIN Rail.
Table 11: Relay Output Module switch settings
The letters refer to labels in Figure 8
Module Selection
Switch (L)
Determines whether the relays on the module are
configured as relays1-8, 9-16, 17-24 or 25-32..
Position 0 - This module has relays 1-8
Position 1 - This module has relays 9-16 if two,
three or four modules are used
Position 2 - This module has relays 17-24 if three
or four modules are used
Position 3 - This module has relays 25-32 if four
modules are used
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