Relay Settings - Vaisala Indigo 202 User Manual

Indigo 202 (WLAN interface) User Guide
4.9 Relay Settings
The Settings > Relay menu contains the configuration options for controlling relays A and B.
Both relays have the same configuration options (relay A example shown here).
Output Mode Select whether the relay is activated when the measurement exceeds the
set trigger, or when the measurement falls below the set trigger. Set to
O if the relay is not in use.
Parameter Select which measurement parameter controls the relay.
Unit Select the unit of the measurement parameter (for example, % if the
measurement is in %CO
Low Trigger If you want to activate the relay above or below a single setpoint without
Level and High using hysteresis, enter the same value for the low trigger and the high
Trigger Level trigger. The Output Mode selection defines whether the relay activates
above or below this value. If you want to set a hysteresis, define the limits
of the hysteresis with the low and high triggers.
Error State Choose the behavior of the relay when an error state occurs (switched on
or o , or remains in its current state).
When you use a single setpoint without hysteresis, set the same value for Low Trigger
Level and High Trigger Level. For instructions on using hysteresis, see
Activation Limit Using Hysteresis (page
More information
‣ Relay Configuration Overview (page 44)
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M211966EN-D
Setting Relay