Mitsubishi Electric MR-J4W2-0303B6, Инструкция по эксплуатации

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12. ABSOLUTE POSITION DETECTION SYSTEM
12 - 3
12.2 Battery
12.2.1 Using MR-BAT6V1SET battery (only for MR-J4W2-0303B6)
(1) Configuration diagram
CYC0
Current position
Home position data
LS0
Position data
LS
Detecting the
number of
revolutions
CYC
Detecting the
position at
one revolution
Servo motor
Cumulative revolution counter
(1 pulse/rev)
One-revolution counter
High speed
serial
communication
Servo amplifier Servo system controller
MR-BAT6V1SET-A
Battery
Posi
tion contr
o
l
Speed contr
o
l
Step-down
circuit
(6 V 3.4 V)
(2) Specifications
(a) Specification list
Item Description
System Electronic battery backup type
Maximum revolution range Home position ± 32767 rev.
(Note 1)
Maximum speed at power
failure [r/min]
500
(Note 2)
Battery backup time
Approximately 10,000 hours/2 axes
(equipment power supply: off, ambient temperature: 20 °C) (Note 3)
Approximately 14,500 hours/2 axes
(power-on time ratio: 25%, ambient temperature: 20 °C) (Note 3)
Note 1. Maximum speed available when the shaft is rotated by external force at the time of power
failure or the like.
2. The data-holding time by the battery using 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 out of specification, [AL. 25 Absolute position erased] may occur.
3. Even if absolute position detection system is used only with one axis, the battery backup time
will be the same.