Instruction manual

General description Absolute position detection system
MELSERVO J2-Super 6 - 1
6 Absolute position detection system
6.1 General description
6.1.1 Specifications

Time to hold data by a battery with power off.

Period during which data can be held by the super capacitor in the encoder after power-off,
with the battery voltage low or the battery removed, or during which data can be held with
the encoder cable disconnected. Battery replacement should be finished within this period.
b
CAUTION:
If an absolute position erase alarm (25) has occurred, always perform home position
setting again. Not doing so can cause runaway.
Item Description
System Electronic battery backup system
Battery Lithium battery A6BAT or MR-BAT
Maximum revolution range Reference position ±32767 rev.
Maximum speed at power failure 500r/min
Battery backup time

Approx. 10000h
Data holding time during battery replacement

2h at delivery, 1h in 5 years after delivery
Battery storage period Approx. 5 years
Tab. 6-1: Specification overview