Troubleshooting
DeLaval voluntary milking system VMS
94897201.pdf2007-12-18
M m Alarm text Type Meaning ActionM m Alarm text Type Meaning Action
2 124 Vacuum not
detected in
cup
Deviation The robot received information that
there was no vacuum in the
teatcup during an attempt to attach
the cup to a teat. The message
includes the cow number, cup
number, and which teat the
attempt concerned.
The alarm is issued after three
attempts to locate the teat.
After these attempts, the cup will
be retracted into the magazine and
the arm make one more attempt to
attach the cup. If this attempt also
fails the milking session will be
classified as incomplete.
- If this occurs seldom, then no action is
required. A possible cause may be that the
cup had already been attached when the
vacuum was turned on. Since the vacuum
sensor reads the difference in air flow
before and after attachment, it interprets
this as a failure of vacuum supply.
- If the self-test in automatic mode fails,
restart the milking station. If this does not
solve the problem, contact service engineer.
2 124 Vacuum not
detected in
cup
Deviation The robot received information that
there was no vacuum in the
teatcup during an attempt to attach
the cup to a teat. The message
includes the cow number, cup
number, and which teat the
attempt concerned.
The alarm is issued after three
attempts to locate the teat.
After these attempts, the cup will
be retracted into the magazine and
the arm make one more attempt to
attach the cup. If this attempt also
fails the milking session will be
classified as incomplete.
- If this occurs seldom, then no action is
required. A possible cause may be that the
cup had already been attached when the
vacuum was turned on. Since the vacuum
sensor reads the difference in air flow
before and after attachment, it interprets
this as a failure of vacuum supply.
- If the self-test in automatic mode fails,
restart the milking station. If this does not
solve the problem, contact service engineer.
In automatic mode, a self-test will
be performed after the cow has left
the station.
If this error occurs for several
consecutive milking sessions, the
systems will issue the alarm
"Several milkings failed" (major
code 1, minor code 107).
Service engineer only:
- Check the vacuum sensor(s) (S485, S486,
S487, S488 in the lower beam).
In automatic mode, a self-test will
be performed after the cow has left
the station.
If this error occurs for several
consecutive milking sessions, the
systems will issue the alarm
"Several milkings failed" (major
code 1, minor code 107).
Service engineer only:
- Check the vacuum sensor(s) (S485, S486,
S487, S488 in the lower beam).
2 126 Rear sensor
failure (...
mm)
Stop alarm The position of the rear plate, read
by the rear sensor, is invalid. For
safety reasons, the robot will be
parked.
The message includes the
displacement of the rear plate in
mm.
- If this rarely occurs, then try the desired
action once again.
- If this error occurs frequently, contact the
service engineer.
2 126 Rear sensor
failure (...
mm)
Stop alarm The position of the rear plate, read
by the rear sensor, is invalid. For
safety reasons, the robot will be
parked.
The message includes the
displacement of the rear plate in
mm.
- If this rarely occurs, then try the desired
action once again.
- If this error occurs frequently, contact the
service engineer.
The system will perform a self-test
while the cow remains inside the
station. If the self-test is
successful, operation continues.
Otherwise, the system will be
stopped and this alarm issued.
Service engineer only; calibrate the rear
sensor.
- On the touch screen, press "VMS" > "Test
VMS".
- On the keypad that appears on the
screen, type "VMS".
- Press "Service Test".
- Press "Pneumatics" and scroll until you
find "Rear plate valve".
- Make sure the rear plate can move freely.
- Press the "Rear plate valve" button.
- Press "Calibrate" and wait until the
calibration is complete, the restart the
milking station.
- If the calibration does not solve the
problem, then check or replace the rear
sensor.
The system will perform a self-test
while the cow remains inside the
station. If the self-test is
successful, operation continues.
Otherwise, the system will be
stopped and this alarm issued.
Service engineer only; calibrate the rear
sensor.
- On the touch screen, press "VMS" > "Test
VMS".
- On the keypad that appears on the
screen, type "VMS".
- Press "Service Test".
- Press "Pneumatics" and scroll until you
find "Rear plate valve".
- Make sure the rear plate can move freely.
- Press the "Rear plate valve" button.
- Press "Calibrate" and wait until the
calibration is complete, the restart the
milking station.
- If the calibration does not solve the
problem, then check or replace the rear
sensor.
2 127 No robot
motion when
expected,
axes (X:...
Y:... Z:...)
Stop alarm The safety function stopped the
robot because the position sensors
(encoders) reported unexpected
values.
The message includes the axes
(X.Y,Z) and their status: "1" means
that there is a problem with this
axis, "0" means that this axis is OK.
Note: When the position sensors
are not working, the
speed-detecting safety functions
do not work either.
- If the self-test fails, contact service
engineer.
Warning: The robot can behave violently
when a position sensor is broken. Be very
careful.
2 127 No robot
motion when
expected,
axes (X:...
Y:... Z:...)
Stop alarm The safety function stopped the
robot because the position sensors
(encoders) reported unexpected
values.
The message includes the axes
(X.Y,Z) and their status: "1" means
that there is a problem with this
axis, "0" means that this axis is OK.
Note: When the position sensors
are not working, the
speed-detecting safety functions
do not work either.
- If the self-test fails, contact service
engineer.
Warning: The robot can behave violently
when a position sensor is broken. Be very
careful.
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