Too Many Drive Units Connected; Too Many Axisno Connected; No Commu. With Axis Drv Unit; No Commu. With Sp Drv Unit - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
4 MCP Alarms (Y)
Y08

Too many drive units connected

Details
The number of drive units connected to each channel exceeds 8.
The exceeded number of drive units per channel is displayed as alarm No.
x: Exceeded number of drive units at drive unit interface channel 2 (0 to F)
y: Exceeded number of drive units at drive unit interface channel 1 (0 to F)
Remedy
Remove drive units from the channel whose alarm No. is other than "0" for the number displayed as the alarm
No. Keep the number of connected drive units to 8 or less.
(Note 1) The drive unit is not counted when all the axes connected to it are invalid.
(Note 2) If this alarm occurs, the alarm "Y03 Message: Drive unit unequipped" will not occur.
(Note 3) The alarm "Y07 Too many axes connected" and "Y09 Too many axisno connected" are displayed tak-
ing precedence over this alarm.
Y09

Too many axisno connected

Details
The No. of the axis (drive unit's rotary switch No.) connected to each channel is bigger than the No. allowed.
If the axis No. of each channel is bigger than the No. allowed, "1" is displayed for the alarm No.
x: "1" when the axis No. at drive unit interface channel 2 is too big
y: "1" when the axis No. at drive unit interface channel 1 is too big
Remedy
For the channel whose alarm No. is "1", keep the axis No. (drive unit's rotary switch No.) not bigger than the
No. allowed.
(Note 1) The axis No. is limited per each drive unit interface channel.
(Note 2) The biggest allowed connected axis No. differs depending on whether or not an expansion unit is avail-
able or the setting of "#11012 16 axes for 1ch (Connecting 16 axes for 1ch)". The biggest connectable
axis No. is as shown below.
With the expansion unit, axes No. '0' to '7' can be connected.
Without the expansion unit, axes No. '0' to '7' are allowed when '#11012 16 axes for 1ch (Connecting 16
axes for 1ch)' is set to '0', axes No. '0' to 'F' when set to '1'.
(Note 3) If this alarm occurs, the alarm "Y03 Message: Drive unit unequipped" will not occur.
(Note 4) This alarm is displayed taking precedence over the alarm "Y08 Too many drive units connected".
(Note 5) The alarm "Y07 Too many axes connected" is displayed taking precedence over this alarm.
Y12

No commu. with axis drv unit

Details
Although the high-speed synchronous tapping option is valid, the connected drive unit doesn't support the op-
tion.
Remedy
Replace the drive unit with that supports the option.
Set "High-speed synchronous tapping disabled axis" parameter as disabled for the axis to which you don't
use the high-speed synchronous tapping.
Y13

No commu. with sp drv unit

Details
Although the high-speed synchronous tapping option is valid, the connected drive unit doesn't support the op-
tion.
Remedy
Replace the drive unit with that supports the option.
Set "High-speed synchronous tapping disabled axis" parameter as disabled for the spindle to which you
don't use the high-speed synchronous tapping.
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71 IB-1501279-H