We recently acquired this machine when power is put to it, it does turns on, but we have get a 366 alarm PG Error (s) This is Pulse Generator error for the spindle. I checked the connections as stated in the manual in the control panel but everything seems fine and connected. Any idea of what and where I should go to see if I can correct this error?
this is from the manual
4.2.14 ALARMS361, 362 AND366 (PG Disconnec- disconnection check of A, B and C phases from
tion Error) PG and check by PG input comparison at the
time when TGONsignal from Servopack turns ON.
They perform 2 types of checkup: Signal wire
Trouble
Disconnection or
contact failure of
signal wire between NC
unit and servopack
Failure of PG detector
circuit connection
No shorting plug connector even without
spindle PG.
Servopack failure
PG failure
Setting failure of
TGONsignal detect
level for Servopack
(Abnormal case)
Check Method
.
.
.
—
Check for looseness and removal of
MB20board’s connectors CN1 (X-axis),
CN2(Z-axis), CN3(spindle) and/or
CN4(spindle PG).
Check looseness and removal of
Servopack connectors.
Perform wiring check according to
Connection Manual.
This type of alarm results when main
power is applied though result of check
for above item 1 is normal.
Shorting plug connector to CN4at CPU
module is required for such specifications without spindle PG.
● Check if
m#1288 D7=1
(X-axis TG ON)
#1289 D7=1
(Z-axis TG ON)
occur at motor stop.
“ If alarm occurs above the speed to
turn ONTGONsignal, it may be PG
output signal failure of Servopack.
“ If alarm occurs above the speed to
turn ONTGONsignal, it may be failure
of PG.
This type of alarm results when position
detector PPS is low. Motor may reach
running speed at TGONsignal detect
level in case of a large speed change
ratio with an external detector (such as
Inductosyn, linear scale).
Solution
● Correct looseness and/or
removal of connectors.
“ Correct wiring as necessary.
Replace MB20.
Contact YASREP.
Mount shorting plug
connector.
Replace Servopack.
Replace PG
This is a rare case.
But, change TGONsignal
detect level of servopack
to 12% from the standard
~.