each speed. Pushbuttons shall be designed and manufactured not to hang up
in control case. Pendant shall include a separate set of pushbuttons for
each motion and for POWER-ON POWER-OFF. Pushbuttons shall be as follows:
POWER-OFF.
POWER-ON.
Hoist-up.
Hoist-down.
[Gantry]-[_____].
[Gantry]-[_____].
Trolley-[_____].
Trolley-[_____].
[Auxiliary Hoist-up.]
[Auxiliary Hoist-down.]
2.4.8.3
Light Indicators
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NOTE: Coordinate requirement for pilot lights and
selector switches.
**************************************************************************
Pilot lights shall meet heavy-duty requirements of NEMA ICS 2. One amber
pilot light to indicate excessive hoist motor temperature shall be provided
on pendant station. A blue pilot light shall be provided to indicate that
the main contactor is energized, and a white pilot light to indicate that
power is available on the load side of crane disconnect switch. A bright
red mushroom head shall be provided with the POWER-OFF pushbutton. A
2-position selector switch shall be provided to select between normal and
micro-drive. A single green pilot light shall be provided to indicate all
micro-drive clutches are engaged.
2.4.8.4
Pendant Drive Control
**************************************************************************
NOTE: If the crane is higher than 18 meters (60
feet) above the operating floor and the span is
greater than 15 meters (50 feet), consider including
a pendant drive for ease of movement of the pendant
if it is not towed by the trolley; otherwise delete
this paragraph. Pendant drive speed should be the
same as the trolley.
**************************************************************************
A 3-position momentary contact spring-return to OFF toggle switch shall be
provided to control the motorized trolley for pendant.
2.4.8.5
Transfer of Control Stations
Pendant shall be provided with a green pilot light to indicate that control
has been transferred to pendant station from cab with key lock-out.
2.4.9
Radio Remote Control, Infrared Remote Control
**************************************************************************
NOTE: Include this paragraph if radio remote
control or infrared remote control is desired;
otherwise delete.
**************************************************************************
SECTION 14630A
Page 41
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