38 ACH580 E-Clipse bypass and packaged drive user manual
E-Clipse bypass functions overview
Programming Advanced Override (Override 2)
Parameter
Number
Parameter Name Parameter Value Comments
E-Clipse Bypass Parameters
Programming the E-Clipse Bypass for Advanced Override Operation
1701 OVERRIDE 2 [1] DI5 Digital Input 5 of the E-Clipse Bypass is used to activate Override
operation for both the VFD and the E-Clipse Bypass.
1702 Permissive Override
PERMIS OVR
as required Determines whether the E-Clipse's Run Permissive input can
interrupt Override operation. (The default value does not allow
Run Permissive to interrupt Override operation. If the damper
control interlock function is desired during Override operation, this
interlock must be ACKNOWLEDGED.)
1703 Interlock 1 Override
INTLK1 OVR
as required Determines whether the Eclipse's Interlock 1 input can interrupt
Override operation. (The default value does not allow Interlock 1
to interrupt Override operation.)
1704 Interlock 2 Override
INTLK2 OVR
as required Determines whether the Eclipse's Interlock 2 input can interrupt
Override operation. (The default value does not allow Interlock 2
to interrupt Override operation.)
1706 Interlock 4 Override
INTLK4 OVR
as required Determines whether the Eclipse's Interlock 4 input can interrupt
Override operation. (The default value does not allow Interlock 4
to interrupt Override operation.)
1707 FAULTS OVR as required Determines whether certain Eclipse Faults can interrupt Override
operation.
1708 OVR2 MODE as required
[1] BYPASS During Override 2 operation, the motor will only run at full speed in
bypass mode.
[2] VFD During Override 2 operation, the motor will only run at a controlled
speed from the ACH580 VFD. Parameter Group 70 in the
ACH580 VFD is used to program its operation.
If the VFD cannot run the motor, the motor will stop.
Requires additional control wiring between E-Clipse and ACH580
VFD.
[3] VFD/BYPASS During Override 2 operation, the system will first attempt to run
the motor from the ACH580 VFD, as programmed in Parameter
Group 70 of the ACH580 VFD.
If the VFD loses power or is in a fault condition, the system will
use the E-Clipse Bypass to run the motor at full speed in bypass
mode.
Requires additional control wiring between E-Clipse and ACH580
VFD. See the diagram on page 41.
[4] STOP During Override 2 operation, the motor will stop.
1401 RO1 SELECT [7] BYP NOT FLT Relay 1 is used to delay the Override 2 command for the E-Clipse
Bypass during power-up of the system. This is to ensure that the
ACH580 VFD has had enough time to boot up before the system
goes into Override 2 Mode. (the value of parameter 1402 can be
adjusted as needed.)
1402 R1 ON DLY 10.0 s (or as
required)
1403 R1 OFF DLY 2.0 s
1410 RO4 SELECT [12] OVERRIDE When the E-Clipse Bypass is in the Override 1 or Override 2
mode, this relay will activate. Its normally open contacts are wired
to activate the Override function in the ACH580 VFD. This will
cause the VFD to display WARNING 2020, Override. It will also
lock out the ability to change the VFD's parameters or control it
externally.
1411
1
R4 ON DLY 0.0 s
1412
1
R4 OFF DLY 0.0 s
1413 RO5 SELECT [32] OVRD2 ENAB Enables Override 2 operation for the VFD based on the
programming of E-Clipse parameters 1701 through 1708. The
normally open contact of this relay is wired to apply control voltage
to Digital Input 4 of the ACH580 VFD. This enables the VFD to run
in Override mode. The E-Clipse Bypass can stop the VFD during
Override 2 operation by opening this contact.
1414
1
R5 ON DLY 0.0 s
1415
1
R5 OFF DLY 0.0 s
1) Indicates a parameter that is unchanged from its default value.
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