Outputs
DIQ/S 281
ba76226e02
03/2023
110
6.6.2
System monitoring
Function
The
System monitoring
function enables the monitoring of system errors. In
order to set up the
System monitoring
function for a relay output, the relay output
must not be linked with a sensor (see section 6.4).
It can be used to monitor the following system errors.
Settings
Collective error
message
In the case of a
Collective error
message, the relay opens if one of the following
malfunctions occurs:
The sensor, which is properly registered to the DIQ/S 281, does not provide
a valid main measured value
The sensor, which is properly registered to the DIQ/S 281, does not provide
a valid secondary measured value
The internal output module has not received any new data DIQ/S 281 for 2
minutes.
In any case, the relay remains open for 10 seconds and only closes when the
malfunction is no longer present.
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).
Settings
Selection
Explanations
Power failure
On
Off
The function
Power failure
On
monitores the
supply voltage on the DIQ/S 281. The relay
switches when the voltage drops below the
critical value.
Communication On
Off
The
Communication
On
function monitors the
functioning of the DIQ/S 281.
Collective
error message
On
Off
Collective error message
On
function
simultaneously monitors the proper functioning
of all sensors and the functioning of the
combination output module to be monitored.
(for details, see below this table)
Action
Open
For all functions of the
System monitoring
, the
relay action is set to
Open
.
Summary of Contents for DIQ/S 281
Page 146: ...Contact Information DIQ S 281 146 ba76226d02 03 2023...
Page 147: ......
