Emerson PACMotion VFD Series - Page 91

GFK-3111A PACMotion VFD AC Variable Speed Drive User Guide 91
Fault Code No. OLED Message
Description
Corrective Action
Under
voltage
07 Under voltage on DC
bus
This occurs routinely when power is switched off.
If it occurs during running, check the incoming supply voltage, and all
connections into the drive, fuses, contactors etc.
Over
temperature
trip
08 Heatsink over
temperature
The heatsink temperature can be displayed in P0-21.
A historical log is stored at 30 second intervals prior to a trip in parameter P0-38.
Check the drive ambient temperature.
Ensure the drive internal cooling fan is operating.
Ensure that the required space around the drive as shown in sections
Mechanical Dimensions and Weight on page 15 to Guidelines for Mounting
(IP66 Units) on page 21 has been observed, and that the cooling airow
path to and from the drive is not restricted.
Reduce the effective switching frequency setting in parameter P2-24.
Reduce the load on the motor / drive.
Under
temperature
trip
09 Under temperature Trip occurs when ambient temperature is less than -10°C. The temperature
must be raised over -10°C in order to start the drive.
Load default
parameters
10 Factory Default
parameters have been
loaded
Press STOP key, the drive is now ready to be congured for the required
application.
External trip 11 External trip E-trip requested on control input terminals. Some settings of P1-13 require
a normally closed contact to provide an external means of tripping the drive
in the event that an external device develops a fault. If a motor thermistor is
connected check if the motor is too hot.
Optibus serial
comms fault
12 Communications Fault Communications lost with PC or remote keypad. Check the cables and
connections to external devices.
Excessive dc
bus ripple
13 Excessive DC ripple The DC Bus Ripple Voltage level can be displayed in parameter P0-16.
A historical log is stored at 20 ms intervals prior to a trip in parameter P0-37.
Check all three supply phases are present and within the 3% supply voltage
level imbalance tolerance.
Reduce the motor load.
If the fault persists, contact your local Emerson Sales Partner.
Input phase
loss
14 Input phase loss Drive intended for use with a 3 phase supply, one input phase has been
disconnected or lost.
Hardware
over current
15 Instantaneous over
current on drive output
Refer to fault 3 above.
Thermistor
fault
16 Faulty thermistor on
heatsink
Refer to your Emerson Sales Partner.
I/o processor
data error
17 Internal memory fault Parameters not saved, defaults reloaded.
Try again. If problem recurs, refer to your IDL Authorised Distributor.
4-20ma
signal out of
range
18 4-20 mA Signal Lost The reference signal on Analog Input 1 or 2 (Terminals 6 or 10) has dropped
below the minimum threshold of 3 mA. Check the signal source and wiring to
the PACMotion VFD terminals.
M/c
processor
data error
19 Internal memory fault Parameters not saved, defaults reloaded.
Try again. If problem recurs, refer to your IDL Authorised Distributor.
User
parameter
default
20 User Parameter Default User Parameter defaults have been loaded. Press the Stop key.
Motor ptc
over heat
21 Motor PTC Over
Temperature
The connected motor PTC device has caused the drive to trip.
Cooling fan
fault
22 Cooling Fan Fault Check and if necessary, replace the drive internal cooling fan.