Baumuller BUG 622, Manual

Page: 44 / 58

Commissioning
44
Basic Supply Unit BUG 622, 623
5.94034.07a
Baumüller Nürnberg GmbH
6.4 Messages and warnings
To use the monitoring the +24 V power supply (X99A or X99B) must be available.
Following features are monitored:
– Overload ballast H1 (Brake Overload)
– Voltage failure H2 (Power Error)
– Phase failure H3 (Phase Error)
– High temperature (overload) H4 (Temp > )
y Ballast monitoring H1
The ballast monitoring function monitors the collector-emitter voltage of the ballast transistor, and in
the case of equipment with internal ballast, the switch-on time of the ballast resistance. On exceed-
ing the permitted limits, the error is saved, and in the case of overload an internal and external "ready
for use" message is prevented.
The ballast message cannot be reset by a common reset. Due to safety reasons the DC link has to
be discharged (U
ZK
< 20 V) to reset this message.
y Mains monitoring H2/H5 H5 Warning
This prevents an internal and external "ready for use" message if at least one phase is missing in the
mains voltage.
y Phase failure monitoring H3/H5 H5 Warning
The phase failure monitoring function recognises that a phase is missing in the supply voltage and
gives an error message.
After 10 seconds the error is saved and an internal and external "ready for use" message is prevent-
ed.
y Temperatue monitoring H4/ H5 H5 Warning
The temperature of the cooling element is monitored and a warning is given in cases of overload, i.e.
excess temperature.
After 10 seconds the error is saved and an internal and external "ready for use" message is prevent-
ed.
H5 Warning
The relay "warning" opens message contact X99AB:3,4, if either of the phase failure, mains failure or
temperature monitoring functions generate a warning.
Thus the machine can be set to a defined operating mode, in the event of error, before the unit prevents
"ready for use" and shuts itself down.
NOTE
After switching on the +24V electronics supply, the operation of the mains monitoring is only saved
when:
– the mains is reported OK for the first time
– the DC link has dropped below 300 V.