Warnings And Alarms - Danfoss VLT MCB 150 Operating Instructions Manual

Warnings and Alarms

8.2 Warnings and Alarms
NOTICE
The errors are listed numerically.
Error
No. Description
Internal failure Reason
1 Diagnostic in
progress
•
67 Int Fail Check that data for
tolerance error feedback (ppr., type of
exceeded: feedback and gear
Reaction STO ratio) are entered
correctly
•
Direction of feedback
is wrong
•
Due to use of
feedback filter the
dynamic of the system
does not match with
dynamic of feedback
filter (42-15 Feedback
Filter). System is
ramping too fast.
•
Feedback signals are
not received at all
•
No proper shielding of
feedback cables
•
68 Int fail Speed The value of Delta V is
limit SS1a too small. For closed
Ramp: Reaction loop system it must
STO often be larger than
the recommended
value.
•
Due to use of
feedback filter the
dynamic of the system
does not match with
dynamic of feedback
filter (42-15 Feedback
Filter).
•
Load change takes
place during ramping.
69 Int fail Speed See 68
limit SS1b
Ramp: Reaction
STO
MG34W302
Operating Instructions
Led Indications
Action
•
Make a re-customi-
sation with correct
data if needed
•
Set 42-12 Encoder
Direction to the
opposite value
•
Decrease ramping
time on frequency
converter
•
Try to run the
system at e.g. 60
RPM. If error nr. 99
now occurs, this is
the reason.
•
Improve shielding
of feedback cables
and motor cables.
Status of LED 1 and LED2 depends on safety
function state assigned to DI1 and DI2
•
If running in closed
loop, try to adjust
PID setting and if
needed increase
SS1 ramping time.
•
Try to increase
42-15 Feedback
Filter, but this
might cause error
nr. 67 to occur.
•
Otherwise increase
42-45 Delta V.
See 68
Danfoss A/S © Rev. 2014-02-11 All rights reserved.
LED1 LED 2 LED4
Green
constant
Green
constant
Red constant
8 8
Red constant
Red constant
61