Danfoss VLT Safety Option MCB 150, Руководство по эксплуатации, Страница: 63 / 76

8.2 Warnings and Alarms
NOTICE
The errors are listed numerically.
Error
No. Description
Led Indications
LED1 LED 2 LED4
Internal failure Reason Action
Status of LED 1 and LED2 depends on safety
function state assigned to DI1 and DI2
Green
constant
1 Diagnostic in
progress Green
constant
67 Int Fail
tolerance error
exceeded:
Reaction STO
•
Check that data for
feedback (ppr., type of
feedback and gear
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
•
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.
Red constant
68 Int fail Speed
limit SS1a
Ramp: Reaction
STO
•
The value of Delta V is
too small. For closed
loop system it must
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.
•
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 .
Red constant
69 Int fail Speed
limit SS1b
Ramp: Reaction
STO See 68 See 68 Red constant
Warnings and Alarms Operating Instructions
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