T&R KV50-20D mk2, Руководство по эксплуатации и техническому обслуживанию

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2.2.4 Interlock/beacon circuit connections
The external interlock circuit uses an 8 pin Bulgin PX0551 plug with the interlock circuit wired to
pins 5 and 6. Extra emergency stop switches may also be connected to this circuit.
The connector is also used to connect external 24V warning beacons to the unit. The beacons
mimic the indicators in the on and off pushbuttons – the green indicator lights when the supply
to the unit is switched on but the HV output is off and the red indicator lights when the HV output
is on.
Please note that the unit will not operate unless either an external interlock circuit is connected,
or the shorting plug provided with the unit is fitted.
To connect the unit to an external interlock circuit, remove the shorting link from the plug
supplied and wire the external interlock circuit in its place.
The interlock circuit has a self-checking circuit and will sound an audible alarm in the event of a
fault with the circuit. If the alarm sounds, stop using the unit and return it to a suitable repair
facility.
Figure 2.4 Interlock and beacon connections
An interlock should be considered to be a safety back-up feature. An interlock should not be
regarded as a substitute for adequate safety rules and proper operator vigilance.
2.2.5 Grounding of the high voltage output
A temporary ground must be applied to the high voltage output when the circuit has been de-
energised using the earth stick provided. When connections are made or disconnected, the
circuit either side of the connection should be grounded first. Extra earth sticks are available
from T&R Test Equipment as an optional accessory.