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5.1 Keypad Operation
The Electronic bypass package utilizes two keypads in its operation. The VFD
Keypad controls the speed in the HAND mode using the up and down arrow keys.
In AUTO mode the user supplied 4–20 mA speed reference is connected to speed
reference input (Affinity terminals 7–11, HSK terminals T2–T1). The Electronic
bypass keypad controls the start/stop of the VFD and bypass as well as reacting to
user supplied safeties, Fire Alarm input, Damper control, Fireman’s Override, auto
transfer to bypass on VFD fault and other features and functions detailed in this
guide.
The following photo shows the respective keypad locations.
VFD Keypad
5.1.1 VFD Keypad
The keypad on the VFD is primarily used for speed control in hand mode and
monitoring purposes as limited programming is required to operate the
Electronic bypass. See the Commander SK Advanced User Guide or the
Affinity User Guide for detailed programming information.
5.1.2 Electronic Bypass Keypad
Operation of the Electronic bypass package is controlled by the Electronic
bypass keypad located on the door of the lower enclosure.
ElectronicBypassKeypad
VFDKeypad
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