n
on the touch panel, a corresponding error message appears in
plain text - see ,
n
the operating signal relay and the fault signal relay are acti‐
vated.
10.6.4 "Process water flow too low" operating status
Should the system be locked by an external flow detector for
process water and the flow rate of the process water is interrupted
or falls below the minimum flow rate set on the meter, the control
device switches the system to
‘Stop’ operating status.
This status is a normal operating status. For this reason, the alarm
signal relay is not activated in this case, although the operating
signal relay drops out.
If the process water flow rate is sufficiently high, the system starts
up automatically without any further operation!
10.6.5 "Stop" operating status
The
‘Stop’ operating status can fundamentally occur in two ways:
n
a fault has occurred, which has stopped the system.
n
the
[STOP] key is used to stop the system.
When the system switches to
‘Stop’ operating status
n
the gas inlet and outlet and
n
the cooling water inlet is closed by a solenoid valve and
n
high voltage generation is switched off.
If the system has been stopped by the
[STOP] key, the message
‘System Off’ appears in the status bar.
If the
‘STOP’ operating status has been caused by a fault requiring
acknowledgement, then a fault alert appears in the status bar in
plain text, the operating signal relay is disabled and the fault signal
relay is enabled.
10.6.6 "Pause" operating status
The PAUSE contact input can be activated by a potential-free
signal. In
‘Pause’ operating status
n
the gas inlet and outlet are closed
n
each cooling water inlet of the system is closed by a solenoid
valve
n
high voltage generation is interrupted.
‘PAUSE’ appears in the status bar. Once the PAUSE signal has
been cleared, the system runs without further action in the oper‐
ating status it was in before the PAUSE input was enabled.
10.6.7 Behaviour of the system when power is connected
As soon as mains power is applied, the system switches to the
operating status in which it was switched to a de-energised status.
Operation
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