11
P/N: 192047082 (REV AD) 627NH
March 2022
VARIABLE SPEED ELECTRIC CHAIN HOIST WITH
OPTION
POWER SUPPLY AND ELECTRICAL
CONNECTIONS
The hoist should be connected to a branch circuit which complies
with the requirements of the National Electrical Code and applicable
local codes.
For grounding of the hoist, the power cord includes a grounding
conductor (green yellow, G-Y). Before connecting the hoist to
the power supply, check that the power to be used agrees with
the voltage range of the hoist. The nominal hoist voltage rating
corresponding to the voltage range given on hoist identifi cation plate is:
Table 2. Voltage Ranges
Nominal
Range
115/1/60
110V-120V
230/1/60
208V-240V
230/3/60
200V-240V
460/3/60
440V-480V
220/3/50
200V-240V
380/3/50
350V-410V
415/3/50
380V-440V
Three-Phase Hoist
Some Lodestar VS hoists operate on 3-phase power.
Figure 13. Location of Components
Variable frequency drive (VFD) is located under back frame cover
(1) for Models A-H and under the motor housing cover (2) for
models J-RT.
Power Phasing
The Lodestar VS will automatically correct for L1, L2, L3 incoming
power-supply phasing. If after a repair the hoist is running in the
wrong direction, it should be corrected by correcting the motor
output connections at the VFD.
NOTE:
Serious damage can result if the hook is run to the upper or
lower limit of travel with the hook operating in a direction opposite to
that indicated by the control station. Proceed as follows:
1. Make temporary connections at the power supply.
2. Operate (UP) control momentarily. If hook raises, connections are
correct and can be made permanent.
3. If hook lowers, change direction by correcting the motor output
connections (T1, T2, T3) at the VFD. Consult the wiring diagram.
Disconnect power before making any wiring changes.
Do not force the Lodestar load limiter to compensate for improperly
adjusted limit switches or reverse voltage phasing.
Single-Phase Hoist
Some Lodestar VS hoists operate on single-phase power.
Some single-phase VS hoists operate on 115/1/60, while others
operate on 220-240/1/50-60. Like all Lodestar VS units, this
operating voltage range cannot be changed. 115/1/60 hoists utilize
a “voltage doubler,” shown in Figure 14, to allow them to operate.
This doubler unit is connected directly to the DC bus of the VFD
inside the hoist. 220-240/1/50-60 hoists operate by connecting the
incoming power phase directly to two of the VFD AC input terminals.
Figure 14. Voltage Doubler
Working in or near exposed energized electrical equipment
presents the danger of electric shock.
TO AVOID INJURY:
DISCONNECT POWER AND LOCKOUT/TAGOUT
DISCONNECTING MEANS BEFORE REMOVING COVER OR
SERVICING THIS EQUIPMENT.
Allowing the hook block to run into the bottom of the hoist when
raising a load or allowing the chain to become taut between the
loose end screw and the frame when lowering a load may break the
chain and allow the load to drop.
TO AVOID INJURY:
Do not allow the hook block to contact the bottom of the hoist or
the loose end chain to become taut.
Checking for Adequate Voltage at Hoist
The hoist must be supplied with adequate electrical power in order
to operate properly. For proper operation, the voltage (measured at
the hoist end of the standard power cord with the hoist operating in
the UP direction with full load) must be as indicated in the table below.
Table 3. Minimum Running Voltage
Nominal Voltage
Minimum
Running Voltage
115/1/60
98 VAC
230/1/60
207 VAC
230/3/60
170 VAC
460/3/60
323 VAC
220/3/50
198 VAC
380/3/50
365 VAC
415/3/50
399 VAC
