Diagnostics; System Monitoring; Drive; Troubleshooting - Danfoss VLT Series Programming Manual

Diagnostics

9 Diagnostics

9.1 System Monitoring

A warning or an alarm is signaled by the relevant indicator
light on the device and indicated by an error code. If faults
occur during servo system operation, check:
•
The LEDs on the servo drive for general problems
relating to communication or device status.
•
The LEDs on the SAB for general problems with
communication, auxiliary supply, or STO voltage.
The error codes can be read using the ISD Toolbox
software, the LCP, or the PLC. The LCP only shows faults
relating to the device it is connected to.
A warning remains active until its cause is no longer
present, however the operation of the device may still be
continued. Warning messages may be critical, but are not
necessarily so. In the event of an alarm, the device goes to
Fault state.
Reset the alarm to resume operation. Reset alarms that are
not trip-locked using 1 of these 3 methods:
•
Using the [Reset] key on the LCP.
•
Using the PLC function block MC_Reset_ISD51x or
DD_Reset_SAB.
•
Using the ISD Toolbox.
If an alarm cannot be reset, the reason may be that the
cause has not been rectified, or the alarm is trip-locked
(see Table 9.2) and (Table 9.5).
Alarms that are trip-locked offer extra protection, meaning
that the supply voltage must be switched off before the
alarm can be reset. After being switched back on, the
device is no longer blocked and can be operated normally.
®
Use Wireshark if there are network problems. Wireshark
is a free and open-source packet analyzer. It is used for
network troubleshooting, analysis, and software and
communications protocol development. It can be
downloaded via the Wireshark
NOTICE
If the fault cannot be eliminated by 1 of the measures
listed in Table 9.1 or Table 9.4, notify Danfoss Service.
MG36D102
Programming Guide
®
®
webpage (wireshark.org).
Danfoss A/S © 01/2017 All rights reserved.
Have the following information available to enable Danfoss
to provide help quickly and effectively:
•
Type number
•
Error code
•
Firmware version
•
System set-up (for example, number of servo
drives and lines).

9.2 Drive

9.2.1 Troubleshooting

First use Table 9.1 to check the possible causes of the fault
and possible solutions. The error codes are listed in
chapter 9.2.2 Error Codes.
Fault Possible cause
LCP display dark Missing input power.
or has no
function.
Missing or open fuses
or circuit breaker
tripped.
No power to the LCP.
Incorrect contrast
setting.
Display is defective.
Servo drive Excessive load.
overheats (high
surface
temperature).
Servo drive not No drive communi-
running. cation or drive in
error mode.
Possible solution
Check the input
power source.
9
Check the fuses and
circuit breaker.
•
Check the LCP
cable for proper
connection or
damage.
•
Replace any faulty
LCP or connection
cables.
Press [Status] +
▲ ▼
[ ]/[ ] to adjust the
contrast.
Replace the faulty
LCP or connection
cable.
Check the torques.
Check the fieldbus
connection and the
status indicators
(LEDs) on the servo
drive.
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9