Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 62

• Servo amplifiers with "ABS" or "INC" set to "External synchronous encoder input" of amplifier setting, have
servo parameter "Scale measurement function selection
measurement function selection
the power supply of the servo amplifier must be turned OFF once, and turned ON again.)
• When a servo amplifier with servo parameter "Scale measurement function selection
support "Scale measurement function", AL.37 (parameter error) occurs in the servo amplifier.
• When the battery of the servo amplifier is disconnected, the serial absolute synchronous encoder
(Q171ENC-W8) can be used as an incremental system (INC) by setting "External synchronous encoder
input" of amplifier setting to "INC".
• When using the scale measurement function with MR-J5(W)-B, the Motion CPU internal processing
converts the synchronous encoder travel distance so that an encoder resolution of 67108864[pulse/rev]
becomes a resolution of 4194304[pulse/rev].
Therefore, "[Pr.322] Synchronous encoder axis unit conversion: Numerator" and "[Pr.323] Synchronous
encoder axis unit conversion: Denominator" should be set assuming the encoder resolution is
4194304[pulse/rev].
• *1: The "Scale measurement function selection" servo parameter in the following servo parameters
depending on the servo amplifier used.
⋅ MR-J5(W)-B: Servo parameter (PA22.3)
⋅ MR-J4(W)-B: Servo parameter (PA22)
Refer to the following for details of servo parameters.
Servo amplifier Instruction Manual
4 INPUT AXIS MODULE
60
4.3 Synchronous Encoder Axis
*1
" set. (When servo parameter "Scale
*1
" has been changed, after transmitting parameter to the servo amplifier,
*1
" set does not