Lauda Viscotemp 15 G, Operation Manual

Page: 91 / 132

09/2021
ECO Gold 91 / 134
13.9 Key lock
The entry key and arrow keys on the control panel on the device can be locked.
This can be done directly using the control keys on the device or by using write commands provided by an interface
module (for example RS 232/485 module, Ethernet USB module, or contact module).
When the device is being controlled using a process control system, it is important to be able to lock the control keys
on the device.
Activating the key lock with the control keys:
It is possible to lock the keys when it is in "standby" or "running" operating
mode and the home screen or graph window is displayed.
-
Press the input key and keep it pressed.
-
Press the down key and keep it pressed.
-
After four seconds, the key lock is activated.
In the softkey bar, the middle softkey, "Menu", and the softkey on the
right, "Standby", are hidden. The functions associated with them are no
longer available.
The softkey on the left continues working. This is used to switch the
display between the home screen and the graph window.
The overtemperature switch-off point can be viewed, but not changed,
using the Tmax key.
Deactivating the key lock with the control keys:
-
Press the input key and keep it pressed.
-
Press the up key and keep it pressed.
-
After four seconds, the key lock is deactivated.
The functions associated with the softkey bar and the Tmax key are all
available again.