
Chapter 4 _________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 125
Table 28 Relay State Examples
Criterion for
Relay Activation
Transmitter
Operation Status
aw below 0.5*
aw above 0.5*
Fault status
Online status
* Hysteresis has an effect when relay switching is based on live measurement.
See section Hysteresis on page 123.
Enabling/Disabling Relays
You can deactivate the relay outputs for example for service purposes of
your system.
Setting Relay Outputs
NOTE
When you have only one relay module installed, its relays are called
When you have two relay modules, the relays of the module con
nected
MODULE 1 are called “relay 1” and “relay 2” and relays
MODULE 2 are called “relay 3” and “relay 4”.
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