CERUS CI-007-P2 - Page 97

Chapter 6 - Parameter Description
6-30
[LV]
The selected AUX relay will be closed when the
DC link voltage is below the Low-voltage level
(200VDC for 240V line voltage setting and
400VDC for 480V line voltage setting). The Low
Voltage level is internally calculated based on SET-
07 Input Voltage setting.
[OH]
The selected AUX relay will be closed when the
temperature of the VFD power module is above the
non-adjustable level. If motor temperature sensor is
connected to VFD terminals NT or NE and 5G, this
relay will be activated at VFD or motor overheat
condition. This is a VFD or motor overheat relay
output.
[Lost Command]
The selected AUX relay will be closed when
frequency reference signal is lost.
[Run]
The selected AUX relay will be closed when VFD
starts producing any output frequency (run mode).
[Stop]
The selected AUX relay will be closed when VFD
stops producing any frequency (stop mode).
[Steady]
The selected AUX relay will be closed when VFD
is running at constant speed (keypad green light is
solid).
[INV line/ COMM line]
This function is used together with Exchange
(VFD-Bypass) function of digital programmable
inputs.
[Speed Search]
The selected AUX relay will be closed during VFD
speed search mode.
[Ready]
The selected AUX relay will be closed when VFD
is ready for operation.
[MMC]
The selected AUX relay will be closed when MMC
mode is activated and AUX (Lag) motor start
command is generated.
[Local]
The selected AUX relay will be closed when VFD
is in local control mode.
[Remote]
The selected AUX relay will be closed when VFD
is in remote control mode.
[Pipe Broken]
The selected AUX relay will be closed when VFD
detects a Pipe Broken condition and trips.
[Damper]
The selected AUX relay will be closed when VFD
receives a start command to activate a damper
actuator. The VFD will start after Damper/Lube
time delay is expired or selected Damper Switch
input is closed. Damper output stays closed until
VFD is in stop mode.
[Lubrication]
The selected AUX relay will be closed when VFD
receives a start command to activate a solenoid.
The VFD will start after Damper/Lube time delay is
expired and Lubrication relay is open.
[Level Detect]
If Parameter Set-74 is set to Under Level detection.
The selected AUX relay closes when VFD detects
AUX
Relay
ON
DC Link Voltage
Time
OV Level
AUX
Relay
ON
DC Link Voltage
Time
LV Level
Exchange
Input
Run
Command
ON
Output Frequency
Time
ON
Time
Bypass
Contactor
ON
ON ON
T1
T
2
VFD
RUN
VFD
RUN
BYPASS
RUN
T1 and T2 = 0.5sec (contactors interlock time)
Speed Search
VFD
Contactor