Rockwell Automation Liqui-Flo 20-HIM-A6 with 2.0 AC Drive - Manual (Page 3)

Rockwell Automation Publication LIQFLO-UM011B-EN-P - November 2012 3
Using the 20-HIM-A6 HIM with the LiquiFlo 2.0 AC Drive
Removing the HIM While the Drive is Powered
If the HIM is the selected control source, removing the HIM while the drive is
powered will cause a drive fault.
If the HIM is not the selected control source, but is the reference source,
removing the HIM while the drive is powered will result in a zero reference value.
When the HIM is replaced, the drive will ramp to the reference level supplied by
the HIM.
If the HIM is not the selected control source or reference source, removing the
HIM while the drive is powered will have no effect on drive operation.
Display Description The basic HIM screen is divided into three display zones ( Figure 3 ). Each display
zone is described below in its respective subsection.
Figure 3 - HIM Display Zones
Status Bar
The Status Bar provides operating status information about the Host Drive.
Figure 4 - Status Bar on the Display Screen
ATTENTION: Removing and replacing the HIM while the drive is running may
cause an abrupt speed change if the HIM is the selected reference source, but is
not the selected control source. The drive will ramp to the reference level
provided by the HIM at the rate specified in Accel Time 1 (140), Accel Time 2
(141), Decel Time 1 (142), and Decel Time 2 (142). Be aware that an abrupt
speed change may occur depending upon the new reference level and the rate
specified in these parameters. Failure to observe this precaution could result in
bodily harm.
Element Meaning
Host Icon A small image of the connected Host Drive.
Stopped
Status Text Indicates current Host Drive operating status.
Text flashes when a fault is present.
0.00 Hz
Feedback Indicates drive output feedback (for example, Hz, RPM, amps, etc.)
Status Bar
Data Area
Soft Key Labels
00
Stopped
0.00 Hz
AUTO
LiquiFlo 2.0
480V 900A
2.012 Ser. B
ESC REF TEXT
F
PAR#
Stopped
0.00 Hz
AUTO
F