Nidec Control Techniques HVAC Drive H300 HMI Bypass, Installation And Commissioning Manual

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HMI Bypass Controller Installation and Commissioning Guide 11
Connect the main power supply, motor and control wiring using the following
recommended conduit locations. The input phase sequence does not affect
the output phase sequence of the VFD. It will affect bypass sequence and
motor rotation direction.
control wiring
motor connection
WARNING
WARNING
Potentially hazardous voltage
can exist within this device. Only fully trained, qualified personnel should
service this equipment.
Pressing the stop button will not remove power from this equipment.
Never service this equipment without first being sure all power is safely
removed. Hazardous voltage levels may exist for up to 5 minutes after
power is disconnected!
Recommended
conduit entrances
incoming supply
2.5.3 Output Wiring
The HMI bypass package is always supplied with a Class 20 motor O/L on its
output. However, the unit may be supplied with several different output
options. The following output options are available.
• Single motor O/L (Terminals T1, T2, and T3)
• Dual motor O/L (Terminals (Motor 1 – T1, T2, and T3)
(Motor 2 – T4, T5, and T6))
• Output reactor
Note: All contactors and relays supplied in the HMI bypass package are
suppressed with R/C snubbers. If adding additional inductive loads (i.e.
magnetic contactors, magnetic relays, magnetic valves, solenoids, magnetic
brakes, etc.) in or near the HMI bypass package, use an appropriate surge
suppressor across the coils to limit the transients on the supply lines.