YASKAWA Sigma-V Series User Manual page 46

• Install external breakers or other safety devices against short-circuiting in external
wiring.
Failure to observe this caution may result in fire.
• Take appropriate and sufficient countermeasures for each form of potential inter-
ference when installing systems in the following locations.
• Locations subject to static electricity or other forms of noise
• Locations subject to strong electromagnetic fields and magnetic fields
• Locations subject to possible exposure to radioactivity
• Locations close to power supplies
Failure to observe this caution may result in damage to the product.
• Do not reverse the polarity of the battery when connecting it.
Failure to observe this caution may damage the battery, the SERVOPACK, or servomotor,
or cause an explosion.
• Wiring or inspection must be performed by a technical expert.
• Use a 24-VDC control power supply with double insulation or reinforced insula-
tion.
• Failures caused by incorrect wiring or wrong voltage application
in the brake circuit may damage the multi-winding drive unit,
SERVOPACKs, or converters or cause an accident resulting in
death or injury. Follow the procedures and instructions for wiring
and trial operation precisely as described in this manual.
• Leakage current may increase depending on the type of noise fil-
ter and the grounding conditions.
When using a detector or a breaker for leakage current, select
the appropriate one by considering the type of noise filter and the
grounding conditions. For details, contact the manufacturer of the
noise filter.
• 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.
4.1 Precautions for Wiring
CAUTION
4-3