YASKAWA HV600 Technical Reference page 17

Ac drive bypass for hvac fan and pump applications
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i.2 Using the Product Safely
WARNING
Arc Flash Hazard
Obey local codes and Arc Flash safety requirements contained in the Standard for Electrical Safety
in the Workplace NFPA 70E (2009 Edition or later) and the Workplace Electrical Safety, Canadian
Standards Association (CSA) Z462-12. Obey safe work procedures and use applicable personal
protective equipment (PPE).
If you do not obey these requirements and procedures, it can cause serious injury or death.
Crush Hazard
Test the system to make sure that the bypass operates safely after you wire the bypass and set
parameters.
If you do not test the system, it can cause damage to equipment or serious injury or death.
Sudden Movement Hazard
Before you do a test run, make sure that the setting values for virtual input and output function
parameters are correct. Virtual input and output functions can have different default settings and
operation than wired input and output functions.
Incorrect function settings can cause serious injury or death.
Remove all personnel and objects from the area around the bypass, motor, and machine and attach
covers, couplings, shaft keys, and machine loads before you energize the bypass.
If personnel are too close or if there are missing parts, it can cause serious injury or death.
Electrical Shock Hazard
Do not modify the bypass body, drive body, bypass circuitry, or drive circuitry.
Modifications to bypass and drive body and circuitry can cause serious injury or death, will cause damage to the
bypass and drive, and will void the warranty. Yaskawa is not responsible for modifications of the product made by
the user.
Only let approved personnel install, wire, maintain, examine, replace parts, and repair the bypass.
If personnel are not approved, it can cause serious injury or death.
Do not remove covers or touch circuit boards while the bypass is energized.
If you touch the internal components of an energized bypass, it can cause serious injury or death.
After the bypass blows a fuse or trips a GFCI, do not immediately energize the bypass or operate
peripheral devices. Wait for the time specified on the warning label at a minimum and make sure
that all indicators are OFF. Then check the wiring and peripheral device ratings to find the cause of
the problem. If you do not know the cause of the problem, contact Yaskawa before you energize the
bypass or peripheral devices.
If you do not fix the problem before you operate the bypass or peripheral devices, it can cause serious injury or
death.
Damage to Equipment
Do not apply incorrect voltage to the main circuit of the bypass. Operate the bypass in the specified
range of the input voltage on the nameplate.
Voltages that are higher than the permitted nameplate tolerance can cause damage to the bypass.
Fire Hazard
Install sufficient branch circuit short circuit protection as specified by applicable codes and this
manual. The bypass is suitable for circuits that supply not more than 100,000 RMS symmetrical
amperes, 240 Vac maximum (208/240 V), 480 Vac maximum (480 V).
Incorrect branch circuit short circuit protection can cause serious injury or death.
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
17

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