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15 -  2

15. ABSOLUTE POSITION DETECTION SYSTEM

15.2 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

Positioning module

I/O module

A1SD71S2 A1SD71S7
A1SD75 

AX40 41 42
AY40 41 42

FX-1PG FX-1GM FX-10GM

FX2-32MT

CN1A

CN1B

CON1

Servo motor

CN2

A1SD75 etc.

I/O

Programmable controller

Servo amplifier

Battery (MR-BAT)

(3) Parameter setting

Set " 1       " in parameter No.1 to make the absolute position detection system valid.

1

Selection of absolute position detection system
0: Incremental system
1: Absolute position detection system

Parameter No. 1