Mitsubishi Electric Melservo-J3 Series MR-J3-B, Instruction Manual

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17 - 42
17. SPEED CONTROL OPERATION
(8) Encoder output pulses
Parameter
Initial value Unit Setting range
No. Symbol Name
PA15 *ENR Encoder output pulses 4000 pulse/rev 1 to 65535
POINT
To enable the parameter values, cycle the power after setting.
Set the encoder pulses (A-phase and B-phase) output by the servo amplifier. Set the value 4 times greater
than the A-phase and B-phase pulses.
You can use parameter No.PC19 to choose the output pulse setting or output dividing ratio setting.
The number of A-phase and B-phase pulses actually output is 1/4 times greater than the preset number of
pulses.
The maximum output frequency is 4.6 Mpps (after multiplication by 4). Use this parameter within this range.
(a) For output pulse designation
Set " 0 " (initial value) in parameter No.PC19.
Set the number of pulses per servo motor revolution.
Output pulse=set value [pulse/rev]
For instance, if "5600" is set to parameter No.PA15, the actual A/B-phase output pulses are as indicated
below.
A-phase and B-phase output pulses =
5600
4
= 1400 [pulse]
(b) For output dividing ratio setting
Set " 1 " (initial value) in parameter No.PC19.
The number of pulses per servo motor revolution is divided by the set value.
Output pulse =
Resolution per servo motor revolution
Set value
[pulse/rev]
For instance, if "8" is set to parameter No.PA15, the actual A/B-phase output pulses are as indicated
below.
A-phase and B-phase output pulses =
262144
8
1
4
= 8192 [pulse]