Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

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15. MR-J3W-0303BN6 SERVO AMPLIFIER
15 - 67
15.10.2 Specifications
WARNING
Before mounting battery, check the control circuit power supply on, turn off the main
circuit power supply, and check that the charge lamp turns off. Otherwise, an electric
shock may occur. In addition, when confirming whether the charge lamp is off or not,
always confirm it from the front of the servo amplifier.
POINT
The internal circuits of the servo amplifier may be damaged by static electricity.
Always take the following precautions.
Ground human body and work bench.
Do not touch the conductive areas, such as connector pins and electrical parts,
directly by hand.
Replace the battery with control circuit power supply on and with main circuit power
supply off. Replacing battery with the control circuit power off will erase the absolute
position data.
(1) Specification list
Item Description
System Electronic battery backup type
Battery
Lithium battery (primary battery, nominal 3.6V)
Type: MR-J3BAT
Maximum revolution range Home position 32767 rev.
(Note 1) Maximum speed at power failure 500r/min
Approximately 10,000 hours/2 axes (equipment power supply: off,
ambient temperature: 25 ) (Note 4)
(Note 2) Battery backup time
Approximately 20,000 hours/1 axis (equipment power supply: off,
ambient temperature: 25 )
(Note 3) Battery life 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. Replace the batteries within three years since the
operation start whether the power supply is on/off. If the battery is used out of specification, Absolute
position erased (25) may occur.
3. Quality of battery degrades by the storage condition. It is recommend that the battery be used within
two years from the production date. The life of battery is five years from the production date regardless
of the connection.
4. Even if the absolute position detection system is used with one axis, the battery backup time will be
approximately 10,000 hours.