Diagnosis
146
13.3.3 Codes for Muting Errors
• The following codes are displayed until a muting cycle is initiated.
• The first message to occur is always shown.
Code
Description/cause
Measures
M50
Runtime error muting
Restart muting and check the sequence.
M53
Time exceeded when initiating muting
M54
Time exceeded when initiating the
second sensor pair muting
Restart muting and check the sequence.
Adjust muting (type, positioning MS, muting sig-
nals) if necessary.
M55
Signal 1 was present, but was withdrawn
without a follow-up signal.
M56
Signal sequence for initiating muting
incorrect (for linear muting with sequence
monitoring)
M57
Incorrect order when activating the muting
signals (1st/2nd signal switched)
M58
Incorrect order when activating the muting
signals (2nd/3rd signal switched)
M59
Incorrect order when activating the muting
signals (3rd/4th signal switched)
M60
Incorrect order during deactivation
1st signal
M61
Incorrect order during deactivation
2nd signal
M62
Incorrect signal sequence when ending mut-
ing (signal switches incorrectly from 0 -> 1)
M63
MUTING_ENABLE timeout
Apply Muting Enable signal for less than 300 s
M64
MUTING_ENABLE was on 0 before the mut-
ing condition was valid
Apply the Muting Enable signal until the muting
conditions are fulfilled
M65
Muting timeout
• Check the muting setup
• Adjust muting properties (type, positioning MS,
muting signals) if necessary
M66
The safety field was occupied when muting
was deactivated
• Check the muting setup
• Adjust muting properties (type, positioning MS,
muting signals) if necessary
M67
Penetration of the safety field before muting
was activated
• Check the muting setup
• Adjust muting properties (type, positioning MS,
muting signals) if necessary
M75
Change to the safety field status while belt
stop active
Check the “belt stop” function and rule out manip-
ulation
M76
Muting sensor signals changed
while belt stop active
Check the “belt stop” function and rule out manip-
ulation
M77
Belt stop timeout
Apply belt stop signal for less than 8 h
