IDEX Health & Science VS-606V7 Series - Manual (Page 130)

130
< Corrective Actions of models with digital operator >
Alarm Display and Contents
Alarm Display
Inverter
Status
Explanation
Causes and
Corrective Actions
Digital
Operator
RUN (Green)
ALARM (Red)
Blinking
Warning
Fault contacts
do not change
state.
UV (Main circuit low voltage)
Main circuit DC voltage drops
below the low-voltage
detection level while the
inverter output is OFF.
200V: Stops at main circuit
DC voltage below
approx. 200V (160V for
single phase)
400V:Stops at main circuit DC
voltage below approx.
400V.
(Control supply fault) Control
power supply fault is detected
while the inverter output is
OFF.
Check the following:
• Power supply
voltage
• Main circuit power
supply wiring is
connected.
• Terminal screws are
securely tightened.
Blinking
OV (Main circuit over voltage)
Main circuit DC voltage
exceeds the over voltage
detection level while the
inverter output is OFF.
Detection level:
200V class: Approx 410V or
more
400V class: Approx 820V or
more Check the power
supply voltage.
Blinking
OH (Cooling fin overheat)
Intake air temperature rises
while the inverter output is
OFF. Check the intake air
temperature.
Blinking
OH3(Inverter overheating pre-
alarm)* signal is input.
Release the input of
inverter overheating
pre-alarm signal.
Blinking
CAL (MEMOBUS
communications waiting)
Correct data has not been
received from the PLC when
the parameters n003
(operation command
selection) is 2 or n004
(frequency reference
selection) is 6, and power is
turned ON. Check communication
devices and
transmission signals.
: ON : Blinking : OFF
*Display only applies to 200/400V class. 7.5/10hp(5.5/7.5kW) inverters.