Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual page 63

Synchronous encoder via servo amplifier [FX5-SSC-S]
There are restrictions in the function and the encoder that can be used by the version of the servo amplifier.
■Setting method
Used to use a rotary encoder connected to the servo amplifier which supports the scale measurement mode as a
synchronous encoder axis.
The following servo amplifiers can be used.
• MR-J4-B
• MR-J4-B-RJ
Refer to the following servo amplifier instruction manuals for the version which supports the scale measurement function and
the encoder which can be used.
SSCNET/H Interface AC Servo MR-J4-_B_(-RJ) Servo Amplifier Instruction Manual
Linear encoders and A/B/Z-phase differential output type rotary encoders cannot be used.
A synchronous encoder connected to the specified servo amplifier axis can be used by the following settings.
Setting item Setting method
Synchronous encoder Set "101 to 108: Synchronous encoder via servo amplifier
axis setting (Connectable servo amplifier: axis 1 to axis 8
Synchronous encoder axis type".
Encoder type setting Set the servo parameter "Scale measurement function selection
(Absolute/Incremental) (PA22)" according to the setting below.
0_ _ _H: Disabled
1_ _ _H: Used in absolute position detection system
2_ _ _H: Used in incremental system
*1 The range from axis 1 to 4 is valid in the 4-axis module and from axis 1 to 8 is valid in the 8-axis module.
When "1_ _ _H" is set in the servo parameter "Scale measurement function selection (PA22)", the synchronous encoder axis
position value and the synchronous encoder axis position value per cycle are restored after the servo amplifier axis is
connected. Therefore, connection becomes valid, and will be on the counter enabling status. (The current value setting by
current value change is required beforehand.)
When "2_ _ _H" is set in the servo parameter "Scale measurement function selection (PA22)", "0" is set to the initial value of
the synchronous encoder axis position value and the synchronous encoder axis position value per cycle after the servo
amplifier axis is connected. Therefore, connection becomes valid, and will be on the counter enabling status.
If the corresponding servo amplifier axis is not connected, the connection of the synchronous encoder axis will be invalid.
When "1_ _ _H" is set in the servo parameter "Scale measurement function selection (PA22)" and the
synchronous encoder movement amount (encoder pulse units) on disconnection or during the power supply
OFF exceeds "2147483647" or "-2147483648", the synchronous encoder axis position value is restored with
its opposite sign.
Setting method of Simple Motion Module Setting
Function
Set the synchronous encoder axis parameter according to the
*1
)" in "[Pr.320] setting below.
• [Pr.320] Type
101: Synchronous encoder via servo amplifier
• [Pr.320] Axis No. of connected servo amplifier
Axis No. of servo amplifier to connect
Set "ABS" or "INC" from the "External synchronous encoder
input" list of the amplifier setting dialog.
(The amplifier setting dialog can be opened from the "System
Configuration" window in the "System Setting".)
2 INPUT AXIS MODULE
2.3 Synchronous Encoder Axis
2
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