1.4 Acknowledge fault or warning message
If the controller recognises an error
[Error]
, the control is stopped, the backlight switches to red
lighting and the alarm relay is deactivated. You can access the next value to be set by pressing the
key. In this process, the controller indicates all errors and warnings. The pending alarm mes‐
sages can be selected and, if required, acknowledged/confirmed. If you acknowledge an error, the
alarm relay activates and the backlight switches back to white light. In the bottom part of the display,
the error or warning message that has occurred remains displayed, such as
[Error 01]
, until the
cause has been cleared.
In the event of a warning, e.g. the controller signals that a sensor has not been calibrated yet, further
processing using the controller is possible with or without acknowledgement of the message.
In the event of an error message
[Error]
,
[e.g.]
the controller signals that no sensor is connected,
then after acknowledgement of the message, no further processing is possible using the controller.
You must now rectify the error - for this see the chapter on Diagnostics and Troubleshooting.
Fig. 8: Alarm message, controller stops control
1.5 Key Lock
The controller has a key lock. If the key lock is
activated, the keys cannot be pressed. The key
lock can be activated or deactivated by simulta‐
neously pressing and . An activated key
lock is indicated by the
symbol.
Operating concept
15
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