Instruction manual

14 - 2
14. ABSOLUTE POSITION DETECTION SYSTEM
14.2 Specifications
POINT
Replace the battery with only the control circuit power ON. Removal of the battery
with the control circuit power OFF will erase the absolute position data.
(1) Specification list
Item Description
System Electronic battery backup system
Battery
1 piece of lithium battery ( primary battery, nominal
3.6V)
Type: MR-J3BAT
Maximum revolution range Home position 32767 rev.
(Note 1) Maximum speed at power failure 3000r/min
(Note 2) Battery backup time Approx. 10,000 hours (battery life with power off)
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.
(2) Configuration
Positioning module I/O module
QD75 QX40 41 42 QY40 41 42 50
A1SD75 AX40 41 42 AY40 41 42
FX-1PG FX-1GM FX10GM FX2-32MT
Servo motor
QD75 etc.
Programmable controller Servo amplifier
CN1 CN2
Battery
(MR-J3BAT)
I/O
CN4
(3) Parameter setting
Set "
1" in parameter No.PA03 to make the absolute position detection system valid. Set " 2"
when using the communication-based ABS transfer system. Refer to Section 14.10 for the communication-
based ABS transfer system.
Absolute position detection system selection
0: Used in incremental system
1: Used in absolute position detection system
ABS transfer by DI0
2: Used in absolute position detection system
ABS transfer by communication
Parameter No. PA03