Mitsubishi Electric MELSEC Q Series Programming Manual page 614

APPENDICES
(i) Amplifier-less operation
Amplifier-less operation cannot be used for axes connected to AlphaStep/5-
phase. When amplifier-less operation is executed, the axis changes to a
disconnected state, and servo ready does not turn ON.
(j) Driver communication
The driver communication is not supported. If the driver communication is
set in a servo parameter, a major error (error code: 1363) will occur when
the power of Multiple CPU system is turned ON.
(k) Monitor devices (#8000 to #8639)
1) Servo amplifier type (#8000+20n)
This register stores the servo amplifier types below when using
AlphaStep/5-phase.
• 8233 ............... 5-phase stepping motor driver
• 8234 ............... Stepping motor driver AlphaStep (AZ series)
2) Motor current value (#8001+20n) is always "0".
(l) Torque limit
The torque limit value set by the Motion CPU is ignored. Set the torque limit
value with the parameter on the AlphaStep/5-phase side.
(m) In-position range
When the position of the cam axis is restored during virtual mode switching
or in advanced synchronous control, a check is performed by the servo
parameter "In-position range (PA10)". However, because the servo
parameter settings are not performed in AlphaStep/5-phase, the "In-position
range" is checked as 100[pulse].
(n) Operation cycle
The operation cycle of 0.22[ms] cannot be used.
Furthermore, even if the operation cycle is set to 0.22[ms] in the setting for
axes 1 to 4 for 1 line, if the servo amplifier is mixed with the AplhaStep/5-
phase, the servo amplifier operates with an operation cycle of 0.44[ms].
(6) AlphaStep/5-phase detection error
When an error occurs on AlphaStep/5-phase, the servo error detection signal
(M2408+20n) turns ON. Also, when an error occurs during home position return
by driver home position return method, "Driver operation alarm (b9)" of servo
status7 (#8018+20n) turns ON. Eliminate the error cause, reset the servo
amplifier error by turning ON servo error reset command (M3208+20n) and
perform re-start.
However, "0" is always stored in parameter error No. (#8009+20n).
Refer to the instruction manual of AlphaStep/5-phase for details of the errors.
(ORIENTAL MOTOR Co., Ltd. make)
(ORIENTAL MOTOR Co., Ltd. make)
APP - 123