CERUS CI-007-P2 - Low Voltage Protection Relay Output; Overheat Protection Relay Output; Lost Command Relay Output; Speed Search Relay Output

Chapter 6 - Parameter Description
6-29
AUX
Relay
ON
Output Frequency
Time
I/O-75/2
I/O-75
ON
I/O-74
[FDT-4]
The selected AUX relay will be closed when the
output frequency reaches I/O-74 FDT frequency.
The AUX relay will then open when output
frequency falls below [I/O-74]-([I/O-75]/2).
[FDT-5]
This is an inverted version of the [FDT-4] function.
The selected AUX relay will be closed at VFD stop
mode and remain closed until output frequency is at
or above I/O-74 during acceleration and then
remain open until output frequency falls below
[I/O-74]-([I/O-75]/2) during deceleration.
[OL]
The selected AUX relay will be closed when the
output current exceeds the FG1-64 Overload
Warning Level for the FG1-65 Overload Warning
Time. This is a motor overload warning relay
output. Timer T1 on the diagram is FG1-65.
[IOL]
The selected AUX relay will be closed when the
output current is above 110% of VFD current rating
for 60 seconds. This is a VFD overload relay
output.
[Stall]
The selected AUX relay will be closed when VFD
is in stall prevention (current limiting) mode.
[OV]
The selected AUX relay will be closed when the
DC link voltage is above the non-adjustable Over-
voltage protection level (380VDC for 230V VFD
and 760VDC for 460V VFD).
Output Current
Time
Output Frequency
Time
FG1-71
[Stall Level]
CLOSED
AUX
Relay
Output Current
Time
Time
FG1-64
[OL level]
AUX
Relay
ON
T1
T1
Output Current
Time
Time
110% of
VFD Rated
Current
AUX
Relay
ON
60sec
AUX
Relay
Output Frequency
Time
Speed Reference
I/O-75 / 2
ON
I/O-75
I/O-74
AUX
Relay
ON
Output Frequency
Time
I/O-75/ 2
ON
I/O-75
I/O-74