System Monitoring - wtw DIQ/S 182-MOD System Operating Manual

System 182
Function
Settings
Collective error
message
ba75504e07 04/2012

6.4.2 System monitoring

The System monitoring enables monitoring system errors.
To set up the System monitoring function for a relay output you have to
select the System option when linking the relay output (see section
6.2.1).
It can be used to monitor the following system errors:
Settings
Power failure
Collective error
Action
In the case of a Collective error message, the relay opens if one of the
following malfunctions occurs:
 One of the sensors properly registered at the controller does not
supply a valid main measured value
 One of the sensors properly registered at the controller does not
supply a valid secondary measured value
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).
Selection Explanations
On The Power failure On function
Off monitors the supply voltage in
the DIQ/S 182-MOD. If the
voltage falls below a critical
value, the relay switches.
On The Collective error function
Off simultaneously monitors the
proper function of all sensors.
(for details see below this
table)
Open For all functions of the System
monitoring, the relay action is
set to Open.
Relay outputs
6 - 15