Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 65

■Restrictions
• When optional data monitor is set to a servo amplifier axis selected as "101: Via servo amplifier" by "[Pr.320] Synchronous
encoder axis type", set the number of communication data points so that the total comes to 2 points or less per axis.
• When servo error (AL.25, AL.70, AL.71, AL.72) occurs in a servo amplifier axis selected as "101: Via servo amplifier" by
"[Pr.320] Synchronous encoder axis type", the servo amplifier axis is in a servo OFF state.
• The following cases are minor errors (error code: 1BAAH)
• When the servo amplifier axis selected as "101: Via servo amplifier" by "[Pr.320] Synchronous encoder axis type" does not support synchronous encoder
via servo amplifier.
• When a servo amplifier axis which has not been set by amplifier setting is set as the connected axis No. for the synchronous encoder via servo amplifier.
• When a servo amplifier axis which has "External synchronous encoder input" set to "Invalid" in the amplifier setting is set as the connected axis No. for the
synchronous encoder via servo amplifier.
• When an incremental scale is connected to a servo amplifier which has "External synchronous encoder input" set to "ABS",
a servo error (AL.37) occurs, and the connected scale cannot be used as a synchronous encoder.
• When "Amplifier operation mode" is set to "Fully closed" for a servo amplifier axis that has "External synchronous encoder
input" set to "ABS", or "INC", a servo error (AL.37) occurs.
• When the control cycle for a servo amplifier axis set as "101: Via servo amplifier" by "[Pr.320] Synchronous encoder axis
type" is a low speed operation cycle of 1.777[ms] or less, data of the synchronous encoder is refreshed at low speed
operation cycle intervals. To refresh data at every operation cycle, connect the synchronous encoder to a servo amplifier
axis that is controlling at the operation cycle.
4 INPUT AXIS MODULE
4.3 Synchronous Encoder Axis
4
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