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7 ABSOLUTE POSITION DETECTION SYSTEM
7.2 Battery-less/battery
Connecting the battery backup type absolute position encoder
When connecting the battery backup type absolute position encoder, refer to the following.
Using the MR-BAT6V1SET/MR-BAT6V1SET-A battery
■
System architecture
■
Specification list
*1 Maximum speed available when the shaft is rotated by external force at the time of power failure.
*2 The data-holding time with MR-BAT6V1SET-A. Replace the batteries within three years since the operation start regardless of the power
supply of the servo amplifier on/off. If the battery is used outside of specification range, [AL. 025 Absolute position erased] may occur.
*3 Power-on ratio of 25 % is the equivalent to power-on for 8 hours on weekdays and power-off on weekends.
Item
Description
System
Electronic, battery backup type
Maximum revolution range
Home position ± 32767 rev
Maximum speed at power failure
[r/min]
Direct drive motor manufactured by
Mitsubishi Electric
500
(only when acceleration/deceleration time until 500 r/min is 0.1 s or longer)
Battery backup time
Direct drive motor manufactured by
Mitsubishi Electric
Approximately 5000 hours (when the equipment power is off, and the
ambient temperature is 20
˚
C)
Approximately 15000 hours (when the power-on ratio is 25 %, and the
ambient temperature is 20
˚
MR-BAT6V1SET-A
LSO
1XO
(6 V
→
3.4 V)
Controller
Servo amplifier
Home position data
Command
position
Current
position
Backup at
power off
Control
1X
Detecting the
position within
one revolution
LS
Detecting the
number of
revolutions
Step-down
circuit
High speed
serial
communication
Direct drive motor
Cumulative revolution counter (1 pulse/rev)
One-revolution counter
Non-volatile memory
Summary of Contents for MELSERVO-J5 MR-J5-G Series
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