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ProMinent
4.3.21
Switching the control on/off (only for systems with electronic
control gear)
Control
OFF
For systems with electronic control gear, the operating mode "control ON" can be switched on
here.
4.3.21.1 Switching between manual and external control
Control
manual
With manual control the probe signal is controlled at a set reference value (s.4.3.5.1).
With external control the reference value is set by a 0/4-20 mA output signal.
4.3.21.2 Allocating the external output signal
External control
x mA = yy %
20 mA = zzz %
You can select to adjust the reference value for the probe signal with an external output signal of
0-20 mA and 4-20mA. 0/4-20 mA can be allocated to a probe signal of 20-100 %. The 20 mA
value must always be greater than the 0/4 mA value.
4.3.22
Alarm Relay
An indicator can be connected to the ALARM relay. In the event of a fault or voltage failure, the
relay opens.
4.3.23
Booster Pump Relay
The BOOSTER PUMP relay can be used to activate a booster or circulating pump. The relay
closes as soon as the UVC output of the lamp exceeds the warning threshold. The relay opens
if the UVC output falls below the safety threshold or the system is switched off.
An external fault indicator, e.g. a flow detector, can be connected to the FAULT switch input.
4.3.24
Fault Switch Input
An external fault input is supplied jumpered, e.g. a flow detector, can be connected to the Fault
switch input.
NOTE
The FAULT switch input is supplied jumpered. If the jumper is removed and a fault
indicator is not connected, the control system reports a fault and the UV disinfection
system can no longer be operated.
IMPORTANT
Remove the jumper when connecting a fault indicator. If you do not, faults will not be
reported.
Controller
Page 19
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