Vacon NX User Manual

11
vacon • 196 Non-regenerative front end
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
11.15 Fault codes
When a fault is detected by the NFE control electronics, the drive is stopped and main circuit
breakers and the charging switch is controlled into open state, which will then disconnect the NFE
module from the mains supply. The fault can be reset with the Reset button on the control keypad
or via the I/O terminal. Resetting the faults will clear the fault and initiate new start-up procedure
of the NFE unit. The faults are stored in the Fault history menu (M5) which can be browsed. The
different fault codes you will find in the table below.
The fault codes, their causes and correcting actions for software version ANCNQ100 are presented
in the table below.
Table 96. Fault codes
Fault
code
Fault Possible cause Correcting measures
2Overvoltage
The DC-link voltage has exceeded the
limits.
- too short a deceleration time
- high overvoltage spikes in supply
Fault:
- 911Vdc, Main Voltage P2.1.1 400-
500Vac
- 1250Vdc, Main Voltage P2.1.1 500-
690Vac
Warning:
- 860vdc, Main Voltage P2.1.1 400-
500Vac
- 1150Vdc, Main Voltage P2.1.1 500-
690Vac
• Set deceleration time
longer.
• Use brake chopper or
brake resistor
(available as options).
• Set over voltage
control active with
INU devices.
•Check input voltage.
4 Charging fault
The pre-set charging time (defined by
MaxChargeTime parameter P.2.1.3,
default 5 sec) has been exceeded.
DC voltage must rise above
40VDC in 1 second
•Check the external
charging circuit &
charging resistor
dimensioning
• Check P.2.1.3
MaxChargeTime
9UnderVoltage
The DC-link voltage has decreased under
the limits defined.
- Too low supply voltage.
- Component failure.
- Defect input fuse.
- External charge switch not closed.
Fault:
- 333Vdc; Main Voltage P2.1.1 400-
500Vac
- 573Vdc; Main Voltage P2.1.1 500-
690Vac
Warning:
- 371Vdc; Main Voltage P2.1.1 400-
500Vac
- 633Vdc; Main Voltage P2.1.1 500-
690Vac
• If there is a temporary
supply voltage break,
RESET the fault and
RESTART the drive.
• Check the supply
voltage. If the
measured value is
sufficient, internal
failure has occurred.
• Check the electrical
network, if any breaks
occur.
• If the fault re-occurs,
contact your local/
nearest service center
or distributor. Report
carefully all the used
software, application
and all options.

Vacon NX Specifications

General

Product Type	AC Drive
Control Method	Scalar Control
Enclosure	IP00, IP21
Communication	Ethernet
Safety	STO (Safe Torque Off)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Ambient Temperature Range	-10°C to +50°C (with derating above +40°C)
Cooling Method	Air-cooled, Liquid-cooled