Error
num‐
ber
Descrip‐
tion
LED indications
72
Internal er-
ror: Pro-
cessor er-
ror.
Reaction:
STO
–
Perform 1 of the following
actions:
•
Power cycle the drive.
•
Restart the safety option
via
parameter 42-90 Re-
start Safe Option
.
•
If the problem persists,
contact Danfoss.
Status of LED1 and LED2 de-
pends on the safety function
state assigned to DI1 and DI2.
If safe fieldbus
is enabled, the
status of LED3
depends on the
safe fieldbus
status. Other-
wise, LED3 is
off.
Red
con-
stant.
73
Internal er-
ror: Safe
output
switch 1.
Reaction:
STO
74
Internal er-
ror: Safe
output
switch 2.
Reaction:
STO
75
Internal er-
ror: DI2 in
PUST.
Reaction:
STO
•
Safety
input
connec-
ted to
DI2 has
illegal
signal
levels.
•
Sensor
is bro-
ken.
•
Check that the configu-
ration of DI2,
parameter
42-21 Type
, is set correct-
ly or that the connected
sensor is installed ac-
cording to specification.
•
Extend the discrepancy
time on the safe input
using the VLT® Motion
Control MCT 10 Safe
Plug-in.
76
Internal er-
ror: DI1 in
PUST.
Reaction:
STO.
•
Safety
input
connec-
ted to
DI1 has
illegal
signal
level.
•
Sensor
is bro-
ken.
•
Check that the configu-
ration of DI1 (
parameter
42-21 Type
, sub-index
[0]) is set correctly or
that the connected sen-
sor is installed according
to specification.
•
Extend the discrepancy
time on the safe input
using the VLT® Motion
Control Tool MCT 10
Safe Plug-in.
Maintenance, Diagnostics, and
Troubleshooting
Installation Guide | VLT®Safety Option MCB 152
AN327351953089en-000101 / 130R0578
62 | Danfoss A/S © 2020.02
Summary of Contents for MCB 152
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