Danfoss VLT Safety Option MCB 150 User Manual

Table 27: Overview of Errors 73–77
Error
num-
ber
Description LED indicators
LED1 LED2 LED4
Internal fail-
ure
Reason Action Green
con-
stant
73 Internal fail-
ure MCB
150/151
• First, power cycle the drive or
restart the safety option via
parameter 42-90 Restart Safe
Option.
• If the problem persists, con-
tact Danfoss.
Status of LED 1 and LED2 depends
on safety function state assigned to
DI1 and DI2.
Red
con-
stant
74 Internal fail-
ure MCB
150/151
• First, power cycle the drive or
restart the safety option via
parameter 42-90 Restart Safe
Option.
• If the problem persists, con-
tact Danfoss.
Red
con-
stant
75 Int Fail DI2 in
PUST: Reac-
tion STO
• Safety input
connected
to DI2 has
illegal sig-
nal level.
• Sensor is
broken.
• Check that the configuration
of DI2 parameter 42-21 Type is
set correctly or that the con-
nected sensor is installed ac-
cording to specification.
• Extend discrepancy time on
the safe input tab in the MCT
10 Safe Plug-in via parameter
14-22 Operation Mode.
Red
con-
stant
76 Int Fail DI1 in
PUST: Reac-
tion STO
• Safety input
connected
to DI1 has
illegal sig-
nal level.
• Sensor is
broken.
• Check that the configuration
of DI1 parameter 42-21 Type,
sub-index [0], is set correctly
or that the connected sensor
is installed according to speci-
fication.
• Extend discrepancy time on
the safe input tab in the MCT
10 Safe Plug-in via parameter
14-22 Operation Mode.
Red
con-
stant
77 Int Fail fail-
safe data
CRC mis-
match: Reac-
tion STO
The CRC of the
safety option
does not match
the stored CRC
value on the
drive.
Configure the safety option with
MCT 10 safe plug-in or by CRC se-
lect/LCP copy
Red
con-
stant
Warnings and Alarms
Installation Guide | VLT® Safety Option MCB 150/151
AQ279747441421en-000101 / 130R0292
84 | Danfoss A/S © 2018.09

Danfoss VLT Safety Option MCB 150 Specifications

General

Brand	Danfoss
Model	VLT Safety Option MCB 150
Category	Control Unit
Language	English