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

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18 HMI Bypass Controller Installation and Commissioning Guide
2.6 Inspection
Once all wiring is complete, verify that:
1. All wiring is installed.
2. Excess screws, metal filings and wire clippings are removed from inside the
unit(s).
3. Screws and fasteners are securely tightened.
4. Exposed wiring has no contact with other wiring or terminals.
Section 3 – Overview of the HMI bypass
All start/stop, safety, fire alarm inputs and VFD analog output are routed to the
inputs of the VFD and IO module via customer terminal connections.
The analog input is factory set to accept a 4–20 mA speed reference signal.
All control wiring must be run in a separate conduit from ANY high voltage or
power wiring. The wiring should also be properly grounded and shielded when
necessary to ensure proper operation.
3.1 HMI Bypass Touchscreen Functions
3.1.1 Splash Screen
Upon initial power-up or any power cycle the LCD touchscreen HMI will
reset to the splash screen. If the HMI Bypass has been setup, operation will
continue in the same state as it was before shutdown/power loss.
4.1.1 Splash Screen
CONTINUE : Navigate to the main control screen.
SETUP WIZARD : Begins the bypass configuration process. Users must enter the
security pin number before changing system settings. See section 4.1 for HMI
bypass commissioning using the setup wizard.