MITSUBISHI ELECTRIC Merservo MR-J2S- B - Manual (Page 225)

13 - 2
13. ABSOLUTE POSITION DETECTION SYSTEM
13.2 Specifications
(1) Specification list
Item Description
System Electronic battery backup system
Battery
1 piece of lithium battery ( primary battery, nominal 3.6V)
Type: MR-BAT or A6BAT
Maximum revolution range Home position 32767 rev.
(Note 1) Maximum speed at power failure 500r/min
(Note 2) Battery backup time Approx. 10,000 hours (battery life with power off)
(Note 3) Data holding time during battery
replacement
2 hours at delivery, 1 hour in 5 years after delivery
Battery storage period 5 years from date of manufacture
Note 1. Maximum speed available when the shaft is rotated by external force at the time of power failure or the like.
2. Time to hold data by a battery with power off. It is recommended to replace the battery in three years independently of
whether power is kept on or off.
3. 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.
(2) Configuration
CN1 CN2
CN5
Servo system controller Servo amplifier
Battery (MR-BAT)
Servo motor
(3) Parameter setting
Set "0001" in parameter No.1 to make the absolute position detection system valid.
Absolute position detection selection
0: Used in incremental system.
1: Used in absolute position
detection system.