Error
No.
Description
Led Indications
LED1
LED 2
LED4
114 Ext Fail DI2 :
Reaction STO
•
Safety input connected
to DI2 has illegal
signal level.
•
Sensor is broken
•
Check that configu-
ration of DI2
42-21 Type
parameter is set
correctly or the
connected sensor
is installed
according to
specification
•
Extend discrepancy
time on safe input
tab in MCT 10 safe
plug-in
14-22 Operation
Mode
.
Status depends on
safety function state
assigned to DI1
Red constant
Red flashing,
cycle (on 500
ms, off 500
ms)
115 Ext Fail Prec
Thresh Timer
Elapsed :
Reaction STO
The frequency converter
has been running below
120 RPM for more than
the time entered in
parameter
42-18 Zero
Speed Timer
with safe
function SLS active.
Increase speed to
above 120 RPM.
Status of LED 1 and LED2 depends on Safety
function state assigned to DI1 and DI2
Red flashing,
cycle (on 500
ms, off 500
ms)
116 Ext Fail SF
activation
Speed
Suspension :
Reaction STO
The frequency converter
has been running below
120 RPM for more that 1
year and a safety function
that need speed feedback
is activated.
Increase speed to
above 120 RPM.
Red flashing,
cycle (on 500
ms, off 500
ms)
134 Int fail speed
limit SLSa:
Reaction SS1a
See 70
See 70
Status of LED 1 and LED2 depends on safety
function state assigned to DI1 and DI2
Red constant
135 Int fail speed
limit
SLSb :Reaction
SS1a
See 70
See 70
Red constant
177 Ext Fail
DI1 :Reaction
SS1a
See 113
See 113
Red constant
Status depends on
safety function state
assigned to DI2
Red flashing,
cycle (on 500
ms, off 500
ms)
178 Ext Fail
DI2 :Reaction
SS1a
See 114
See 114
Status depends on
Safety function state
assigned to DI1
Red constant
Red flashing,
cycle (on 500
ms, off 500
ms)
Warnings and Alarms
Operating Instructions
MG34W302
Danfoss A/S © Rev. 2014-02-11 All rights reserved.
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Summary of Contents for VLT Safety Option MCB 150
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