12
Fig. 1.4 Signal lamps and earthing mechanism arrangement
The
green
signal lamps are illuminated when the mains supply to the unit is on, and the key
switch on the front panel (item K in Fig. 1.1) is off (
ready for operation
).
The
red
signal lamps are illuminated when the key switch is on, all interlock switches closed,
all emergency stop buttons released and the interlock circuit reset by pressing the front panel
button (item D in Fig. 1.1) (
ready to switch on
). The red lamps will remain illuminated when
the output voltage is switched on (
in operation
). They will not be extinguished until an
emergency stop or interlock switch is opened, or the control unit is switched off with the key
switch. See the section Optional Accessories for information on a suitable connector.
1.3.3
Earthing Mechanism Control Output
Connector A also provides a 230V output which may be used to control an automatic earthing
mechanism. The output will be on whenever the unit is
ready to switch on
or
in operation
(when the
red
signal lamp is on). This output can be used to trigger the removal of an
automatic earthing mechanism.
1.4
Output Voltage Control
The output is controlled from the output control located on the front panel of the control unit.
To increase the output voltage the knob is turned in a clockwise direction.
Note:-
The output cannot be energised unless the output control is at zero, i.e. fully anticlockwise.
Summary of Contents for KV mk2 Series
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