YSI IQ SensorNet MIQ/R6 Module - Manual (Page 31)

MIQ/R6 Settings
4 - 17 ba76031e01 01/2012
In the following cases, the relay does not open despite an invalid
measured value:
 The sensor is being calibrated
 The sensor is in the maintenance condition
 The sensor is being cleaned with the aid of a valve module in the
system (compressed air operated cleaning system).
4.5.3 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 4.3).
Settings
Note
Preferably set up the relay output as normally closed for monitoring
functions (Action Open, see section 4.5.1).
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.
Setting Selection Explanation
Error Special Special sensor errors are
monitored and can prompt a
relay action.
All All sensor errors (special ones
and general ones) 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 (see
section 4.8) is monitored and
can prompt a relay action.
Action Open
Close Relay action (see section 4.5.1)