Maintenance, Diagnostics, And Troubleshooting; Maintenance And Service; Status Messages - Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Maintenance, Diagnostics, a...

7 Maintenance, Diagnostics, and Troubleshooting

This chapter includes maintenance and service guidelines,
status messages, warnings and alarms, and basic trouble-
shooting.

7.1 Maintenance and Service

Under normal operating conditions and load profiles, the
frequency converter is maintenance-free throughout its
designed lifetime. To prevent breakdown, danger, and
damage, examine the frequency converter at regular
intervals depending on the operating conditions. Replace
worn or damaged parts with original spare parts or
standard parts. For service and support, refer to
www.danfoss.com/contact/sales_and_services/.
WARNING
UNINTENDED START
When the frequency converter is connected to AC mains,
DC supply, or load sharing, the motor may start at any
time. Unintended start during programming, service, or
repair work can result in death, serious injury, or
property damage. The motor can start with an external
switch, a fieldbus command, an input reference signal
from the LCP or LOP, via remote operation using MCT 10
Set-up Software, or after a cleared fault condition.
To prevent unintended motor start:
•
Disconnect the frequency converter from the
mains.
•
Press [Off/Reset] on the LCP before
programming parameters.
•
Completely wire and assemble the frequency
converter, motor, and any driven equipment
before connecting the frequency converter to
AC mains, DC supply, or load sharing.

7.2 Status Messages

When the frequency converter is in Status mode, status
messages are generated automatically and appear in the
bottom line of the display (see Illustration 7.1).
MG33AQ02
Operating Instructions
1 Operating mode (see Table 7.1)
2 Reference site (see Table 7.2)
3 Operation status (see Table 7.3)
Illustration 7.1 Status Display
Table 7.1 to Table 7.3 describe the status messages shown.
Off
Auto On
Hand On
Table 7.1 Operating Mode
Remote
Local
Table 7.2 Reference Site
AC Brake
AMA finish OK
AMA ready
AMA running
Braking
Danfoss A/S © 07/2015 All rights reserved.
Status
799RPM 7.83A
0.000
53.2%
Auto Remote Ramping
Hand Local
Stop
O Running
Jogging
.
.
.
Stand by
1 2 3
The frequency converter does not react to any
control signal until [Auto On] or [Hand On] is
pressed.
The frequency converter is controlled from the
control terminals and/or the serial communi-
cation.
The frequency converter is controlled by the
navigation keys on the LCP. Stop commands,
reset, reversing, DC brake, and other signals
applied to the control terminals override local
control.
The speed reference is given from external
signals, serial communication, or internal
preset references.
The frequency converter uses [Hand On]
control or reference values from the LCP.
[2] AC brake is selected in parameter 2-10 Brake
Function. The AC brake overmagnetises the
motor to achieve a controlled slow down.
AMA was carried out successfully.
AMA is ready to start. Press [Hand On] to start.
AMA process is in progress.
The brake chopper is in operation. Generative
energy is absorbed by the brake resistor.
1(1)
36.4kW
7 7
37