Keypad Hand-Off-Auto Functions; Hand-Off-Auto Mode - Allen-Bradley PowerFlex400 User Manual

2-6 Start Up

Keypad Hand-Off-Auto Functions

Parameter P042 [Auto Mode] defines the operation mode of the control
keys on the integral keypad.

Hand-Off-Auto Mode

In HAND mode:
• Control keys operate as Hand-Off-Auto.
• Start command and speed reference come from the integral keypad
Start/Hand and Digital Speed Increment and Decrement keys.
• Auto key switches control from HAND mode to AUTO mode in a
bumpless transfer as long as there is an active Run command.
In AUTO mode:
• Auto key LED is illuminated.
• Start command is defined by
• Speed Reference command is defined by
• Start/Hand key switches control to the integral keypad in a bumpless
transfer and switches the speed reference to the integral keypad.
• Stop key stops the drive and the drive switches to HAND mode.
Table 2.A P042 [Auto Mode] = 1 "Hnd-Off-Auto" (Default)
HAND Mode
Key LED Key Function
On Starts drive.
Runs according to Speed Increment/
Decrement keys.
On Changes speed.
Off Changes to AUTO Mode.
N/A Stops drive.
Important: Certain digital input settings can override drive operation.
T051-T054 [Digital Inx Sel] ≠ 2 "Auto Mode" or 3 "Local"
Refer to Start and Speed Reference Control on page 1-24
for details.
P036 [Start Source].
P038
AUTO Mode
LED Key Function
On Changes to HAND Mode and Starts
drive.
Runs according to Speed Increment/
Decrement keys.
Off Not active.
Keys are only active if P038 [Speed
Source] = 0 "Drive Pot".
On Not active.
N/A Changes to HAND Mode and Stops
drive.
[Speed Reference].