Pendant Installation - Harrington Hoists RHN02D-20A-20D Series Owner's Manual

3.6

Pendant Installation

1) Refer to
the Hoist.
2) Remove Control Cover.
3) Loosen the cable fitting located on the lower side of the electrical enclosure and insert the Pendant
Cable. Pull through enough cable to reach the terminals then securely tighten the cable fitting.
4) Attach a strain relief cable or chain between the pendant and hoist. The cable should attach to the small
plate located at the bottom of the electrical enclosure under the gear box.
5) Access to terminal strip: The terminal strip is mounted on DIN rail, located on the lower portion of the
control box.
6) Connect the individual pendant leads to the correct terminals as shown on the interconnection diagram.
Make sure the terminals are securely tightened and each lead is completely isolated.
7) Reinstall the Control Cover. Be careful to not to pinch any wires wire closing and tightening down the
Control Cover.
Figure 3-14
3.6.1 Connection to Electrical Power Source - The 3 power leads of the Power Supply Cable (normally red,
white, and black wires) should be connected to an electric power disconnect switch or circuit breaker.
This connection should be made so that the hoist is phased properly. Refer to
instructions on how to check for correct power supply phase connection.
3.6.2 Fuse/Breaker Capacity - The trolley and hoist's power supply should be equipped with overcurrent
protection such as fuses, which should be selected for 110% to 120% of total listed full load amperage,
and should be dual element time-delay fuses. For the total full load amperage draw, add the amperage
draws shown on the motor nameplates of ALL lifting and traversing motors.

3.6.3
shock hazard when touching any part of the hoist or trolley. In the Power Supply Cable the ground wire
will be either Green with Yellow stripe or solid Green. It should always be connected to a suitable
ground connection. Do not paint the trolley wheel running surfaces of the beam as this can affect
grounding.
Figure 3-14, Figure 3-15 and the wiring diagram and the interconnection diagram provided with
Grounding - An improper or insufficient ground connection creates an electrical
Figure 3-15
28
Section 3.9.4 for