Mitsubishi FX3U-20SSC-H User Manual

9 Positioning Control
9.7 Variable Speed Operation
170
FX3U-20SSC-H Positioning Block User's Manual
Note
• When setting the operation speed to 0, the work piece decelerates to stop, but the variable speed
operation does not end.
The operation pattern should be changed to another pattern when terminating the variable speed
operation.
• At STOP command ON, the work piece decelerates to stop.
Note that the operation restarts at STOP command OFF.
• Even if the current address overflows, no error occurs.
• The current address may overflow during unlimited length feed operation.
No error occurs even if the current address overflows, but note that the current address changes "from the
maximum value to the minimum value" or "from the minimum value to the maximum value."
2. Operation speed
The actual operation speed is "operation speed 1 x override setting."
→ For the override function, refer to Subsection 7.6.1
3. Rotation Direction
The operation direction is decided by the sign of operation speed 1.
+: Operates in the direction which increases the current value.(Decelerates to stop when the value is 0.)
-: Operates in the direction which decreases the current value.
If the sign of the operation speed value changes, the reverse operation starts after decelerating to stop.
Caution
An abrupt change in the rotation direction may cause damage to the machine.
It may also cause an error through motor overload.
To change the rotation direction, set operation speed 1 value to 0, and wait for the motor to stop completely
after decelerating to stop.
If operation speed 1 value changes from positive to negative (e.g. 100 → -100), the work piece decelerates to
stop, and the 20SSC-H starts the reverse operation immediately.
BFM Number
Data type
X-axis Y-axis
Ring counter setting
(Ver.1.10 or later)
Operation parameter 2 BFM #14002 b3 BFM #14202 b3 Positioning parameters
Pulse rate BFM #14005,#14004 BFM #14205,#14204 Positioning parameters
Feed rate BFM #14007,#14006 BFM #14207,#14206 Positioning parameters
Maximum speed BFM #14009,#14008 BFM #14209,#14208 Positioning parameters
Acceleration time BFM #14018 BFM #14218 Positioning parameters
Deceleration time BFM #14020 BFM #14220 Positioning parameters
Servo end evaluation time BFM #14032 BFM #14232 Positioning parameters
Ring counter upper limit value (Ver. 1.10 or later) BFM #14101,#14100 BFM #14301,#14300 Positioning parameters
Positioning completion signal output waiting time
(Ver.1.20 or later)
BFM #14106 BFM #14306 Positioning parameters
Acceleration time 2 (Ver.1.30 or later) BFM #14108 BFM #14308 Positioning parameters
Deceleration time 2 (Ver.1.30 or later) BFM #14110 BFM #14310 Positioning parameters

Mitsubishi FX3U-20SSC-H Specifications

General

Brand	Mitsubishi
Model	FX3U-20SSC-H
Category	Controller
Language	English