Rockwell Automation 20D PowerFlex 700 Installation Instructions - Frames 7…10 - Manual (Page 58)

58 Rockwell Automation Publication 20B-IN014H-EN-P - June 2013
PowerFlex 700 Adjustable Frequency AC Drive – Frames 7…10
PLC = Auto, Terminal Block = Manual, with speed reference from the HIM
A process is run by a PLC when in Auto mode and requires manual control from
the terminal block with the speed reference provided by the HIM.
The auto speed reference is produced by the PLC and transmitted to the drive
through a communications module installed in the drive. Because the internal
communication is designated as Port 5, [Speed Ref A Sel] is set to “DPI Port 5"
with the drive running from the Auto source.
When Manual mode is requested through the terminal block digital input, the
drive evaluates if Manual mode can be granted.
If [TB Man Ref Sel], parameter 96 is set to a DPI Port and [Man Ref Preload],
parameter 193 is enabled, the drive transfers the last value of the automatic speed
reference to the HIM. The HIM is now the speed reference source. The terminal
block has exclusive control based on [Save HIM Ref ], parameter 192, bit 1
(Manual Mode).
If [TB Man Ref Sel] is set to a DPI Port and [Man Ref Preload] is disabled, the
HIM is now the speed reference source. The terminal block has exclusive control
based on [Save HIM Ref ], bit 1 (Manual Mode).
If [TB Man Ref Sel] is set to one of the DPI Ports, a HIM must be connected on
the DPI Port selected.
• Attain Manual Control
–
Close the digital input.
With the input closed, the speed command comes from the HIM.
• Release to Auto Control
–
Open the digital input.
With the input open, the speed command returns to the PLC.
Auto/Manual Notes
1. Manual control is exclusive. If a HIM or terminal block takes manual
control, no other device can take manual control until the controlling
device releases manual control.
2. If a HIM has manual control and power is removed from the drive, the
drive returns to Auto mode when power is reapplied.
3. Parameter 192 - [Save HIM Ref ], bit 1 can enable Manual mode to allow
starts and jogs from the HIM in 2-wire mode.
IMPORTANT Requires drive firmware v7.001 or greater and a Series B HIM with firmware
v5.004 or greater.
IMPORTANT The HIM does not enter Manual mode, it is only the reference source for the
terminal block.