Caution, Danger, Warning – Harrington Hoists and Cranes SMR Trolley User Manual
Page 18
18
Figure 3-10
Optional trolley installation method
3.4 Electrical
Connections
3.4.1
CAUTION
Ensure that the voltage of the electric power supply is proper for the hoist or trolley.
3.4.2
CAUTION
Do NOT apply electronic soft-start control or voltage varying controls to the SMR
trolley. Use of such devices may cause the motor brake and other electrical components to
malfunction.
3.4.3
DANGER
Before proceeding, ensure that the electrical supply for the hoist or trolley has
been de-energized (disconnected). Lock out and tag out in accordance with ANSI Z244.1 “Personnel
Protection -Lockout/Tagout of Energy Sources”.
3.4.4
WARNING
Make sure all power supply components (plugs, wires, breakers, fuses etc.) are
adequately rated for the voltage and amperage draw of the trolley and hoist.
3.4.5
This instruction applies to installations where an SNER model electric hoist is installed on an SMR
trolley. In this case the hoist and trolley are controlled by a pendant with four push buttons – two for the
hoist motion and two for the trolley motion. Special wiring considerations must be taken if the trolley is
used with a hoist other than an SNER model.
Pendant Cord - The Pendant Cord connects to the trolley via a hard wire connection or optional 8-pin
(8P) Plug and Socket.
Make the hard wire connection as follows:
1)
Refer to
Figure 3-12.
2)
Attach the UP pendant wire to terminal number 4 (Red trolley pendant wire).
3)
Attach the DOWN pendant wire to terminal number 5 (White trolley pendant wire).
4)
Attach the RIGHT pendant wire to terminal number 7 (Brown trolley pendant wire).
5)
Attach the LEFT pendant wire to terminal number 8 (Blue trolley pendant wire).
6)
Attach the pendant COMMON wire to terminal number 3 (Black trolley pendant wire).
7)
Install the Cord Strain Relief Cable to the Cord Support on the Bar Holder.
Make the plug connection (optional) as follows:
1)
Refer to
Figure 3-13.
2)
Insert the 8P Plug into the 8P Socket on the Switch Box and hand tighten the Screw Coupling.
3)
Install the Cord Strain Relief Cable to the Cord Support on the Bar Holder.