Electronic Bypass Controller Installation and Commissioning Guide
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To exit the Test Mode, press the OFF/RESET button on the electronic bypass keypad. The
VFD input contactor will open and the TEST and INPUT CONTACTOR LEDs will go out.
4.7.2 VFD mode
In VFD Mode both the input and output contactors are energized. A Start command
must exist before the VFD can operate.
To place the VFD package in VFD Mode, press the VFD pushbutton. The VFD, INPUT
and OUTPUT CONTACTOR LEDs will be illuminated.
To exit the VFD Mode, press the OFF/RESET button on the electronic bypass keypad. The
VFD, input and output contactor will open and their respective keypad LEDs will go out.
4.7.3 Bypass Mode
In Bypass Mode the bypass contactor will be energized. A Start command must exist
before the bypass contactor will close.
To place the VFD package in Bypass Mode, press the BYPASS pushbutton. The BYPASS
LED will be illuminated. Note that the Bypass Mode and Test Mode can be operated
simultaneously if desired.
To exit the Bypass Mode, press the OFF/RESET button on the electronic bypass
keypad. The bypass contactor will open and its respective keypad LED will go out.
4.7.4 Hand Mode
In the Hand Mode, starting and stopping is controlled entirely from the drive keypad.
Hand Mode can control both VFD and Bypass operation modes.
To place in VFD Hand Mode, press the VFD button. Then press the HAND button. The
VFD, HAND, INPUT and OUTPUT CONTACTOR and RUN LEDs will be illuminated.
Pressing the HAND button also creates an enable command for the VFD. The VFD
must be started and stopped by the START/STOP buttons on the VFD keypad. Motor
speed is controlled by the up and down arrow buttons on the VFD keypad.
To place in Bypass Hand Mode, press the BYPASS button. Then press the HAND
button. The BYPASS, HAND, BYPASS CONTACTOR and RUN LEDs will be illuminated.
To exit the Hand Mode, press the OFF/RESET button once on the electronic bypass
keypad. The HAND and RUN LEDs will turn off. Press the OFF/RESET button again and
it will turn off either the VFD or BYPASS LEDs and open the respective contactors.