Chapter 5 Memory and Parameter
6) Emergency stop deceleration
Deceleration in the event of a sudden stop sets the deceleration for situations where a sudden stop needs to be made while
operating the axis due to internal or external factors.
Conditions for a emergency stop are as follows.
In case the software upper limit/lower limit is detected
In case the operation speed of the serve axis exceeds the speed limit in synchronized operation (gear, cam)
In case the setting for「error level of tracking error」is ‘1: alarm’ and the error of tracking error occurs
In case the emergency stop command is executed during the test operation in XG-PM
In case an error occurs in the command executed while axis is currently operating during the checking of execution
conditions (Except for occasions when restarting the command or ContinuousUpdate is activated.)
7) Encoder select
Set the type of encoder that is going to be used. When using the absolute position system, select 1: absolute encoder.
The following shows the setting of “Encoder select”
Encoder
select
0: Incremental Encoder
After power on/off, the previous location of servo motor is not
maintained.
After power of/off, origin fix state is off.
1: Absolute Encoder
The absolute position system is activated.
After power on/off, the previous location of servo motor is maintained.
Origin fix state maintain last condition before power on/off.
8) Gear ratio(Motor, Machine)
Set gear ratio between the motor and the load. If it is a structure that the load side rotates n times when the motor side
rotates m times, set the gear ratios as below.
• Motor side gear ratio = m
• Machine side gear ratio = n
If the 「unit」setting is ‘0: pulse’, this parameter is invalid.
[Setting Example]
When the machine which is moved by ball screw is connected to the encoder with gear, the setting of the encoder unit/ Pulses
per rotation/ travel per rotation is as follows.
· Unit: mm
· Pulses per rotation = 524288 (19Bit Encoder)
· Travel per rotation = Ball screw pitch
= 10.0 mm
· Gear ratio(Motor) = 7
· Gear ratio(Machine) = 5
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