installation &
operating instructions
Design Envelope 4302 ivs and 4382 ivs vertical
in-line pumping unit with integrated controls
45
alarm 16
, Short-circuit:
There is short-circuiting in the motor or on the motor termi-
nals. Turn o the inverter and remove the short-circuit.
warning/alarm 17
, Control word timeout:
There is no communication to the inverter. The warning will
only be active when Par. 8-04 Control Timeout Function is
not set to o . If Par. 8-04 Control Timeout Function is set
to Stop and Trip, a warning appears and the inverter ramps
down to zero speed, while giving an alarm. Par. 8-03 Control
Timeout Time could possibly be increased.
warning 22
, Hoist Mech. Brake:
Report value will show what kind it is.0 = The torque ref. w a s
not reached before timeout 1 = There was no brake feedback
before timeout
warning 23
, Internal fans:
External fans have failed due to defect hardware or fans not
mounted.
warning 24
, External fan fault:
The fan warning function is an extra protection function that
checks if thefan is running / mounted. The fan warning can
be disabled in Par.14-53 Fan Monitor, [0] Disabled.
warning 25
, Brake resistor short-circuited:
The brake resistor is monitored during operation. If it shor t-
circuits, the brake function is disconnected and the warning
appears. The inverter still works, but without the brake func-
tion. Turn o the inverter and replace the brake resistor (see
Par. 2-15 Brake Check).
alarm/warning 26
, Brake resistor power limit:
The power transmitted to the brake resistor is calculated as a
percentage, as a mean value over the last 120 s, on the basis
of the resistance value of the brake resistor (Par. 2-11 Brake
Resistor (ohm)) and the intermediate circuit voltage. The
warning is active when the dissipated braking power is higher
than 90%. If Trip [2] has been selected in Par. 2-13 Brake
Power Monitoring, the inverter cuts out and issues this alarm,
when the dissipated braking power is higher than 100%.
warning/alarm 27
, Brake chopper fault:
The brake transistor is monitored during operation and if
it short-circuits, the brake function disconnects and the
warning comes up. The inverter is still able to run, but since
the brake transistor has short-circuited, substantial power is
transmitted to the brake resistor, even if it is inactive. Turn o
the inverter and remove the brake resistor. Warning: There
is a risk of substantial power being transmitted to the brake
resistor if the brake transistor is short-circuited.
alarm/warning 28
, Brake check failed:
Brake resistor fault: the brake resistor is not
connected/working.
warning/alarm 29
, Drive over temperature:
If the enclosure is ip00, ip20/nema1 or ip21/type 1, t h e c u t - o u t
temperature of the heat-sink is 203°f +9°f (95°c +5°c). T h e
temperature fault cannot be reset, until the temperature of
the heat sink is below 158°f (70°c). The fault could be:- Am-
bient temperature too high-Too long motor cable
alarm 30
, Motor phase u missing:
Motor phase u between the frequency converter and the
motor is missing. Turn o the frequency converter and check
motor phase u.
alarm 31
, Motor phase v missing:
Motor phase V between the inverter and the motor is miss-
ing. Turn o the inverter and check motor phase V.
alarm 32
, Motor phase w missing:
Motor phase W between the inverter and the motor is
missing. Turn o the frequency converter and check motor
phase w.
alarm 33
, Inrush fault:
Too many power ups have occurred within a short time
period.
warning/alarm 34
, Fieldbus
communication fault:
The fi eldbus on the communication option card is
not working
warning/alarm 36
, Mains failure:
This warning/alarm is only active if the supply voltage to
the inverter is lost and Par. 14-10 Mains Failure is not set to
o . Possible correction: check the fuses to the
frequency converter
warning/alarm 37
, Phase Imbalance:
There is a current imbalance between the power units.
alarm 38
, Internal fault:
Contact your local Armstrong supplier.
alarm 39
, Heatsink Sensor:
No feedback from the heatsink sensor.
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