wtw DIQ/S 182-PR, System Operating Manual

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Relay outputs System 182
6 - 16 ba75503e07 04/2012
6.4.3 Sensor monitoring
Function The Sensor monitoring function enables to monitor sensor errors and
the maintenance condition.
In order to set up the Sensor monitoring function for a relay output, the
relay output must be linked with a sensor (see section 6.2.1).
Settings
Note
Preferably set up the relay output as an opener for monitoring
functions.
Sensor messages include errors and information that are registered by
the sensor.
Special
sensor errors
The special sensor errors are sensor-dependent. Details of this are
given in the component operating manual of the respective sensor.
General
sensor errors
Setting Selection Explanation
Errors All All sensor errors (special ones
and general ones) are
monitored and can prompt a
relay action.
Special Special sensor errors are
monitored and can prompt a
relay action.
Off Sensor errors are not
monitored.
Mainten. condition On
Off Switching on and off the
maintenance condition is
monitored and can prompt a
relay action.
Action Open For all functions of the Sensor
monitoring , the relay action is
set to Open .
Init can prompt a relay action for a short time, depending
on the starting behavior of the system
---- Invalid measured value, or defective sensor
Error Communication with sensor interrupted
OFL Measuring range undercut or exceeded (overflow)