Yaskawa DC Power Input Σ-V Series - Manual (Page 10)

E-8
Operation
• Motor over-temperature protection is not provided. Motor over-
temperature protection shall be provided in the end use when
required by the NEC.
When used with Yaskawa servomotor series SGMMV, external
over-temperature protection is not needed due to the protection
functions in the SERVOPACK and because the motor is rated for
continuous torque from 0 to rated speed.
• Incorrect wiring or incorrect voltage application to the output cir-
cuit may cause short-circuit.
The above failures will prevent the holding brake from working, which
may damage the machine or cause an accident resulting in death or
injury.
• Inverting the polarity of the brake signal (/BK), i.e. positive logic,
will prevent the holding brake from working in case of its signal
line disconnection. If this setting is absolutely necessary, check
the operation and confirm that there are no safety problems.
• Provide separate AC/DC power supplies for the main circuits and
for controls.
Failure to observe this caution may result in malfunction.
• Do not connect devices (such as motors or solenoids) that
greatly change the load or devices (such as electromagnetic
switches) that generate surge voltages to the controller power
line.
Failure to observe this caution may result in deterioration of the internal
elements or a blown fuse.
CAUTION
• Always use the servomotor and SERVOPACK in one of the spec-
ified combinations.
Failure to observe this caution may result in fire or malfunction.
• Conduct trial operation on the servomotor alone with the motor
shaft disconnected from the machine to avoid accidents.
Failure to observe this caution may result in injury.
CAUTION