2-40 ACH550 E-Clipse Bypass User’s Manual
Bypass functions overview
Programming Advanced Override (Override 2)
Parameter
Number
Parameter Name Parameter Value Comments
Initial Programming
The drive should first be set up and operating correctly
with the E-Clipse Bypass. This must be done before
programming the VFD's Override function.
Programming the ACH550 for Advanced Override Operation from the E-Clipse Bypass
The parameters on this section program the ACH550
VFD's operation during Override Mode. They must be
performed in the order listed.
9902 APPLICATION MACRO [15] E-CLIPSE Access this parameter, do not change its value, but
press the SAVE soft key. This returns the ACH550's
parameters to their default values for normal operation
with the E-Clipse Bypass.
1608 START ENABLE 1 [4] DI4 Digital Input 4 allows the E-Clipse to stop the VFD
during Override operation. The VFD will indicate this by
issuing Alarm 2021 START ENABLE 1 MISSING when
this occurs.
This parameter change will cause the drive to display
Alarm 2012 until the final step of this section of the
instructions.
1701 OVERRIDE SEL [5] DI5 Applying control voltage to Digital Input 5 will activate
Override Mode in the ACH550 VFD.
Note: Parameter 1705 must be set to OFF to change
this parameter.
1702 OVERRIDE FREQ as required Use these parameters to set up the Override function of
the ACH550 as desired.
1703 OVERRIDE SPEED as required
1706 OVERRIDE DIR as required
1707 OVERRIDE REF as required
1704 OVERR PASS CODE 358 Allows parameter 1705 to be changed immediately
after entering this value. The displayed number will
return to 0 after the SAVE key is pressed.
1705 OVERRIDE [1] ON Enables Override operation for the VFD.
This value can only be changed immediately after
entering the Override Pass Code in Parameter 1704.
9902 APPLICATION MACRO [15] E-CLIPSE Access this parameter, do not change its value, but
press the SAVE soft key to return the VFD to normal
operation from the E-Clipse during normal operation.
After a short delay, ALARM 2012 should no longer be
active.
Only required for E-Clipse parameter 1708 selections [2] VFD and [3] VFD/BYPASS
ACH550 Parameters
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