Vacon NX User Manual

Non-regenerative front end vacon • 197
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
11
10 Input phase
External electronic monitoring relay have
detected undervoltage, phase
sequence or phase failure issue.
• min. threshold value: 360Vac for
400-500Vac supply voltage
• min. threshold value: 470Vac for
525-690Vac supply voltage
• response delay is set to be 0.1 sec
Various causes:
- Supply phase failure
- Supply fuse failure
- Incorrect Mains cabling
-Grid interruption
Check EMD relay settings,
Signal wiring, supply volt-
age, fuses, supply cable,
rectifying bridge.
13 Undertemperature
Power module heatsink temperature is
under –10 °C.
Power module is in a too
cold
place or coolant agent is too
cold. Check the ambient &
coolant temperature. Check
the signal wiring.
14 Overtemperature
Fault:
Power module heatsink temperature is
over 60 °C.
Warning:
Power module heatsink temperature is
over 55 °C.
•Check Coolant flow
and temperature
• Check the ambient
temperature.
• Check the cooling fan
condition
•Check the power
module loading
• Check the signal
wiring
32 Fan cooling
Jammed cooling fan
- Cooling Fan failure
- Cooling Fan is not rotating
• Check the signal
wiring
• Change the cooling
fans
51 Ext Fault
External fault digital input have triggered
the fault
• Check the signal
wiring
• Check External Fault
input
56 Choke Temp
Over temperature switch feedback or
Fault:
The temperature of the external input AC
choke is over 130 °C (measured from
PT100 thermistor).
Warning:
The temperature of the external input AC
choke is over 110 °C. (measured from
PT100 thermistor)
• Check input AC choke
cooling conditions
•Check the power
module loading
• Check the signal
wiring
Table 96. Fault codes
Fault
code
Fault Possible cause Correcting measures

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