Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 66)

66 Rockwell Automation Publication 750-RM002B-EN-P - September 2013
Chapter 1 Drive Configuration
For this circuit, set the following parameters (P301 [Access Level] must be set to
1 “Advanced” to see P563 [DI ManRef Sel]).
The drive requests Manual mode, starts and tracks the reference speed coming
from the Analog Input when the H-O-A switches to Hand. (The HIM still reads
Auto. This display changes only when the HIM has control of Manual mode).
Using Hand-Off-Auto with a Start Relay
The Hand-Off-Auto switch can also be wired to ability to start the drive through
a separate start relay.
In the circuit below, the run relay closes the circuit to both the stop and start
inputs when the H-O-A switch is in Auto. Using this option, the drive can be
started only if the H-O-A switch is in Hand or in Auto and the Run Relay is
energized. No network or HIM control of the drive is possible.
The above circuit can also be accomplished with a single digital input. Unlike
P161 [DI Start], P176 [DI HOA Start] can share the same physical input with
P158 [DI Stop]. The circuit can thus become the following.
Parameter No. Parameter Name Value
158 DI Stop Digital Input 0
172 DI Manual Control Digital Input 1
176 DI HOA Start Digital Input 1
324 Logic Mask xxxxxxxxxxxxxxx1 (Digital In)
326 Manual Cmd Mask xxxxxxxxxxxxxxx1 (Digital In)
327 Manual Ref Mask xxxxxxxxxxxxxxx1 (Digital In)
563 DI Manual Reference Select Anlg In0 Value
+24V
H A
O
XOO
OOX
DI 0: Stop
DI 1: HOA Start
Start Relay
+24V
H A
O
XOO
OOX
DI 0: Stop and
HOA Start
Start Relay