No. SX-DSV02310 - 159 -
R2.0 Motor Business Division, Appliances Company, Panasonic Corporation
8-1-8 RTEX_Update_Counter error protection (Err86.2)
This alarm
will occur when Update_Counter is not renewed correctly because errors have been accumulated more than
set number for Pr.7.38 (RTEX_Update_Counter error protection).
When Pr7.38 is 0 or 1, this alarm is invalid.
This alarm is to detect conflict in command renewal cycle between an upper device and the amplifier. Be careful,
detection may not be performed correctly if the communication cycles are not synchronized.
Cause • Update_Counter is not renewed correctly because errors have been
accumulated more than set number for Pr.7.38 (RTEX_Update_Counter error
protection).
Detecting timing • RTEX communication is in RUNNING state.
• Sync establishment between communication and servo is in transient condition.
• At reading received data of each command renewal cycle.
Internal process upon
detecting error
• Received data are taken as they are.
• RTEX communication state keeps RUNNING state.
• Sync establishment condition between communication and servo is continued.
Action • Check if there is any problem in frequency setting in upper devise side and in
amplifier side.
• When Update_Counter is not used with ratio of communication frequency and
command renewal frequency being 1 : 1, this alarm is made invalid.
Alarm clear attribute • Can not be cleared.
Display on COM LED • Lights in red
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