8.2 Warnings and Alarms
NOTICE
The errors are listed numerically.
Table 25: Overview of Errors 1–68
Error
num-
ber
Descrip-
tion
LED indicators
LED1 LED2 LED4
Internal
failure
Reason Action Green
con-
stant
1 Diagnostic
in pro-
gress
Status of LED 1 and LED2 de-
pends on safety function
state assigned to DI1 and DI2.
Green
con-
stant
67 Int Fail tol-
erance er-
ror excee-
ded: Reac-
tion STO
• Check that data for feed-
back (PPR., type of feed-
back, and gear ratio) are
entered correctly.
• Direction of feedback is
wrong.
• Due to use of feedback fil-
ter the dynamic of the sys-
tem does not match with
dynamic of feedback filter
(parameter 42-15 Feedback
Filter). System is ramping
too fast.
• Feedback signals are not
received at all.
• No proper shielding of
feedback cables.
• Make a recustomization
with correct data if nee-
ded.
• Set parameter 42-12 En-
coder Direction to the op-
posite value.
• Decrease the ramping
time on the drive.
• Try to run the system at,
for example, 60 RPM. If
error 99, Int Fail Feedback
error
• Improve shielding of
feedback cables and mo-
tor cables.
Red
con-
stant
68 Int fail
Speed lim-
it SS1a
Ramp: Re-
action STO
• The value of Delta V is too
small. For closed loop sys-
tem, it must often be larg-
er than the recommended
value.
• Due to use of feedback fil-
ter the dynamic of the sys-
tem does not match with
dynamic of feedback filter
(parameter 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 parameter
42-15 Feedback Filter, but
this might cause error 67,
Int Fail tolerance error ex-
ceeded: Reaction STO to
occur.
• Otherwise increase pa-
rameter 42-45 Delta V.
Red
con-
stant
Warnings and Alarms
Installation Guide | VLT® Safety Option MCB 150/151
AQ279747441421en-000101 / 130R0292
82 | Danfoss A/S © 2018.09
To Next Page
Loading...
