11
1.3
Rear Panel Connections
G
F
E
D
C
B
A
Fig. 1.3 Rear panel connections
Note: KV30-100 has different style connector
A
Signal beacons & earthing
mechanism control outputs
E
Output to HV transformer
Note: KV30-100 fitted with 3 pin
connector.
B
Contactor fault alarm sounder
F
Main earth terminal
C
Interlock & emergency stop circuit
inputs
G
Mains supply lead
D
HV transformer voltage & current
metering inputs
1.3.1
Alarm Sounder
The control unit switches its output on using two independent safety contactors, connected in
series. Mechanically linked auxiliary contacts on these devices are used to monitor the status
of the main contacts. If a condition is detected where either of the contactors remains closed
when it is switched off (e.g. due to a welded contact), the other contactor will be disabled and
the alarm will sound. Further operation of the unit will not be possible until the fault is rectified.
1.3.2
Signal Beacons
Connector A in Fig. 1.3 provides for the addition of green and red signal beacons (230V) which
indicate the operational status of the equipment (in accordance with EN50191). Fig. 1.4
shows the general arrangement.
Summary of Contents for KV mk2 Series
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