5.2 Spindle Axis Orientation
5-13
Spindle Axis
Operation
The maximum torque, high-speed winding maximum torque, and low-speed winding maximum torque can be
found in the characteristics table for each motor.
However, if the torque limit or maximum torque output is less than the maximum torque, it will be clamped at
the torque limit.
The rated torque can be determined with PnA0E and PnA12.
If torque saturation occurs due to the torque limit and you want to limit the torque to execute this command,
set the POS_TREF percentage in bytes 20 to 23 of the command to perform acceleration or deceleration at a
limited torque.
With the torque used for deceleration as T
dec
, and the rated torque as T
rated
, the POS_TREF can be calculated
as T
dec
÷
T
rated
.
Note: T
dec
is calculated as DECR (Deceleration rate)
×
J (Moment of inertia).
Torque is affected by the values that are set for Torque Unit Selection (common parameter 47) and Torque Base Unit
(common parameter 48).
Torque = (Common parameter 47)
×
10
(Common parameter 48)
(3) Alarms
(4) Related Parameters
Alarm
Number
CMD_ALM
Name
Description
Reset
A.94B
9
Data Setting Warning 2 The command data is out of range.
Auto reset
A.95A
A
Command Warning 1
The command was sent even though the command con-
ditions have not all been met.
Auto reset
A.97B
1
Data Setting Warning
(Data Clamp)
The set command data is clamped to the minimum or
maximum value of the range that was exceeded.
Auto reset
Parameter
No.
Name
Rotary/
Linear
Unit
Setting Range
Factory
Setting
When
Enabled
Pn830
Reference Unit Amount per
Machine Rotation
Rotary
ref
1 to
1073741823 (2
30
-1)
4096
After
restart