Yaskawa Varispeed 626M5 - Manual (Page 10)

Notes for Motor
ix
J Wiring
CAUTION
D Perform wiring securely according to the connection diagrams.
Failure to observe this caution may cause Motor overrun and personal injury.
D Verify that the input power is OFF before wiring.
D Perform proper grounding and noise control.
D Make wiring length as short as possible. Separate the power cables from the signal lines. Do not
run power cables and signal lines in the same duct or bundle. Noise on signal lines may cause
vibration or malfunctions.
D Never connect a commercial power supply directly to the Motor.
D Use Yaskawa-specified cables. To use other cables, check the rated current of your equipment,
and consider the operating environment to select correct cables. If a cable not specified by Yas-
kawa is to be used for the Encoder, select a twisted-pair shielded cable.
D The terminal block, connectors, or connector pin layout differ according to the model. Refer to the
manuals for your model before wiring.
D If no terminal block is used, protect lead joints with insulating tubes or tapes.
Failure to observe this caution may result in electrical shock or fire.
J Operation
WARNING
D Do not operate the equipment with the terminal box cover removed. After wiring, replace the ter-
minal box cover.
Failure to observe this warning may result in electrical shock.
CAUTION
D Perform trial operation as follows: Secure the Motor and disconnect it from load machine system,
check operations, then reconnect the Motor to the load machine.
Failure to observe this caution may result in personal injury.
D If an alarm is issued, correct the cause, verify safety, then reset the alarm and resume operation.
Failure to observe this caution may result in personal injury.
D If momentary power loss occurs, turn OFF the power supply.
The machine may resume operation suddenly and may result in personal injury.
D Before starting a liquid-cooled Motor, verify that cooling oil is properly supplied to the Motor.
D For oil mist lubrication Motors, verify that the lubrication is properly performed before starting op-
eration.
D Build an emergency stop circuit or a device that protects the Motor by immediately stopping op-
eration in case of malfunctions of cooling oil supply or oil mist lubrication.
After emergency stop, restart operation using the following procedure.
(1) Recover cooling oil supply or oil mist lubrication.
(2) Cool the Motor sufficiently (for one hour or longer), then restart operation from low speed.
(3) Gradually increase rotation speed while verifying that there is no abnormal noise, increase
of vibration or rise in temperatures.
PROHIBITED
D Do not operate liquid-cooled Motors without supplying cooling oil.
D Do not operate oil mist lubrication Motors without supplying proper lubricant.