Franklin Electric CERUS X-DRIVE CXD-003A-4V, Installation And Operation Manual

Page: 88 / 252

OPERATION
Protection Features
88
Protection Features
Signal Loss Protection for Analog Inputs
Analog signal loss can be detected for signals with minimum values greater than zero (4-20mA and 2-
10VDC).
NOTE: There is no signal loss protection for AVI2 input.
ACI Signal Loss
To enable Signal Loss Protection for an ACI input, adjust the following parameters:
ACI Input Selection [IO–00]: Make sure input is set to the transducer’s signal type.
ACI Loss Trip [IO–01]: Select the drive’s response to signal loss detection:
• 0_Disable:
The drive has no signal loss protection.
• 1_Hold Speed: VFD runs at previous speed (2 sec before signal loss).
•
2_Stop/Start:
VFD will restart when signal is present.
• 3_Trip Stop: VFD will stay tripped until it is reset.
ACI Loss Level [IO-02]: Set the desired signal loss trigger level:
• 0_Below Minimum: Triggered when the level is equal or less than the minimum value.
4-20mA minimum: 3.8mA
2-10V minimum: 1.9VDC
•
1_Below 0.5xMin:
Triggered when the level is equal or less than half the range minimum value for the time
selected in ACI Loss Delay [IO-03] .
4-20mA minimum: 2mA
2-10V minimum: 1VDC
•
2_Redundant VFD:
Triggered when the signal is either below
1_0.5xMin
or at the transducer maximum value
for the time set in ACI Loss Delay [IO-03] .
ACI Loss Delay [IO-03]: Set the delay between signal loss detection and drive’s response. Default = 1.0 sec.
AVI1 Signal Loss
To enable Signal Loss for an AVI1 input, adjust the following parameters:
AVI1 Input Selection [IO–05]: Make sure input is set to the transducer’s signal type.
AVI1 Loss Trip [IO–06]: Select the drive’s response to signal loss detection:
• 0_Disable: The drive has no signal loss protection.
•
1_Hold Speed:
VFD runs at previous speed (2 sec before signal loss).
• 2_Stop/Start: VFD will restart when signal is present.
•
3_Trip Stop:
VFD will stay tripped until it is reset.
AVI1 Loss Level [IO-07]: Set the desired signal loss trigger level:
•
0_Below Minimum:
Triggered when the level is equal or less than the minimum value.
4-20mA minimum: 3.8mA
2-10V minimum: 1.9VDC
• 1_Below 0.5xMin: Triggered when the level is equal or less than half the range minimum value for the time
selected in
AVI1 Loss Delay [IO-08]
.
4-20mA minimum: 2mA
2-10V minimum: 1VDC
• 2_Redundant VFD: Triggered when the signal is either below 1_0.5xMin or at the transducer maximum value
for the time set in
AVI1 Loss Delay [IO-08]
.
AVI1 Loss Delay [IO-08]: Set the delay between signal loss detection and drive’s response. Default = 1.0
sec.