Mitsubishi A1SD75P1-S3, User Manual

Page: 597 / 622

Appendix - 50
MELSEC-A
APPENDICES
Trouble type Questions/Trouble Remedy No.
Is it possible to count the pulses
when the B phase is set to "1", and
only A phase pulses are input?
Not possible.
(The AD75 counts 1, 0, 1, 0.)
37
Can a manual pulse generator
other than the Mitsubishi MR-
HDP01 be used? Other manual pulse generators can be used if they
conform to section "3.5 Specifications of input/output
interfaces with external devices."
38
Manual pulse
generator operation
Can one manual pulse generator
be operated connected to several
AD75 modules?
This is possible if the system conforms to the electrical
specifications.
39
Current value change
The BUSY signal is not canceled
by the current value change. How
can it be canceled? The BUSY signal may remain if the scan time is long.
Use a complete signal to check whether the new value
has been executed.
40
AD75 READY signal
The AD75 READY signal does not
turn OFF even when the PLC
READY signal [Y1D] is turned ON. "A parameter error" has occurred.
Confirm the error No. in the error history, and correct the
parameter.
41
M code ON signal
Is there any problem with setting
an M code ON signal OFF request
in the next scan after the M code
ON signal ON?
The AD75 checks the M code ON signal OFF request
every "56.8ms", so there is a possibility that the M code
ON signal OFF may be delayed by a maximum of
"56.8ms" after the M code ON signal ON, even if an M
code ON signal OFF request is set.
42
In-position signal
Must an in-position signal always
be wired?
The in-position signal is not particularly used in the AD75
processing, so it does not always have to be wired.
(In the AD75, the input in-position signal is only output in
the monitor area.)
43
How long is the output time for the
deviation counter clear signal?
"10ms". 44
Is a deviation counter clear signal
output when the positioning is
complete? A signal is not output.
The only time the AD75 outputs a deviation counter clear
signal is for a machine zero point return.
45
Deviation counter
clear
How can a deviation counter clear
signal be output? The AD75 does not output a deviation counter clear signal
except for machine zero point returns.
46
Where is the current version of the
AD75 written? The version is shown on the label on the front of the
module. (Refer to section "4.1.2 Names of each part".)
47
Is it possible that the delivered
module is a different version than
the version delivered 1 year ago?
That is possible. 48
Module
Error 537 (PLC READY OFF start)
occurred when the new module
was connected.
(The sequence program is the
same.)
The parameters in the module may differ.
Check if the AD75 READY signal [X0] turns OFF when
the PLC READY signal [Y1D] turns ON.
When the PLC READY signal is ON but the AD75 READY
signal is ON, the parameter error has occurred. Check the
error code and modify the parameter with the error.
49
The motor only rotates in one
direction.
The parameter settings on the AD75 side may not match
those on the servo side.
Check the parameter settings.
50
Motor
Can the current motor speed be
monitored?
The speed shown on the AD75 monitor is calculated from
the No. of pulses output from the module. Thus, the actual
motor speed cannot be monitored.
("
Md.31 Feedrate" monitors the commanded speed. It
does not show the actual speed.)
51
AD75 software
package Can AD75P -S3 models be used
by SW0IVD-AD75P-E models?
No. 52
Block transmission
How can it be judged that the block
transmission was carried out
normally?
If the transfer is carried out normally, "0" will be stored in
buffer memory "5103".
If the transfer ended abnormally, a warning will be stored
in the " Md.34 Axis warning No".
53
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