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

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HMI Bypass Controller Installation and Commissioning Guide 29
Auto-Reset Delay : The time interval between reset attempts. The HMI Bypass
default is 5 seconds.
Hold Drive Healthy : If set to “ON,” the fault alarm relay will not close until all
reset attempts have been exhausted.
Note: If Hold Drive Healthy is set to “ON” and if Number of Auto-Reset
Attempts is set to “6” (infinite) the Drive Healthy status will always remain
“Healthy.”
3.2.8 Remote Control
The Remote Control screen defines whether the HMI Bypass is controlled by
the customer terminal block inputs or serial fieldbus communications.
This screen allows you to select either “Local” or “Remote” (Serial/Ethernet
communications) control for each individual input. If Remote is selected, the
bypass system will be controlled by the corresponding bit in the VFD rather
than the digital input. Parameter’s referenced below can only be accessed
directly from the HVAC Drive H300 with a keypad or with Connect VFD
configuration software. For further information on Remote setup see the
HVAC Drive H300 User Guide.
Remote Local
Input Parameter Terminal
Fireman Override* 18.031 22
Damper Feedback 18.032 23
Fire Alarm 18.033 24
Reset 18.034 25
Forward/Reverse** 18.037 -
Motor Overload 18.035 26
Auto Run 18.036 27
*Remote Fireman’s Override is only available if Fireman’s Override VFD mode
is off. Remote control will then initiate a bypass run.
**Foreword/Reverse is a remote parameter only used to reverse a running
motor using configured ramps.
SERIAL COMMS: Navigates to the serial communication configuration screens.