sh030051g.pdf - 第298页
12 - 3 12. ABSOLUTE POSITION DET ECTION SYSTEM 12.3 Battery installation procedure WARNIN G Before installing a battery, turn off the main circuit pow er while keeping the control circuit power on. Wait for 15 minu tes o…
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12. ABSOLUTE POSITION DETECTION SYSTEM
12.2 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
Servo motor
Servo amplifier
CN1 CN2
Battery
(MR-J3BAT)
CN4
Servo system controller
(3) Parameter setting
Set "
1" in parameter No.PA03 to make the absolute position detection system valid.
Absolute position detection system selection
0: Used in incremental system
1: Used in absolute position detection system
Parameter No.PA03
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12. ABSOLUTE POSITION DETECTION SYSTEM
12.3 Battery installation procedure
WARNING
Before installing a battery, turn off the main circuit power while keeping the control
circuit power on. Wait for 15 minutes or more (20 minutes or for drive unit 30kW or
more) until the charge lamp turns off. Then, confirm that the voltage between P(
)
and N(
) (L and L for drive unit 30kW or more) is safe with a voltage tester
and others. Otherwise, an electric shock may occur. In addition, always confirm
from the front of the servo amplifier whether the charge lamp is off or not.
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.
Before starting battery changing procedure, make sure that the main circuit
power is switched OFF with the control circuit power ON. When battery is
changed with the control power OFF, the absolute position data is lost.
(1) For MR-J3-350B or less
MR-J3-200B4 or less
POINT
For the servo amplifier with a battery holder on the bottom, it is not possible to
wire for the earth with the battery installed. Insert the battery after executing
the earth wiring of the servo amplifier.
Insert connector into CN4.
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12. ABSOLUTE POSITION DETECTION SYSTEM
(2) For MR-J3-500B or more
MR-J3-350B4 or more
Insert connector into CN4.