Mitsubishi Electric MELSERVO-J5 User Manual page 431

Precautions
• To configure the absolute position detection system by using the direct drive motor manufactured by Mitsubishi Electric,
batteries and the absolute position storage unit (MR-BTAS01) are required.
• Refer to the following for the encoder cable and the absolute position storage unit.
Direct Drive Motor User's Manual
• If the absolute position storage unit (MR-BTAS01) is replaced, the absolute position is erased. In this case, start up the
direct drive motor again and perform homing.
• Replace the battery while the control circuit power is on. If the battery is replaced with the control circuit power supply
turned off, [AL. 25 Absolute position erased] occurs. A battery cannot be replaced using the battery connection cable (MR-
J3BTCBL03M).
• If the encoder cable is disconnected, [AL. 025 Absolute position erased] occurs.
• Timing chart at power-on under the condition of performing magnetic pole detection
ON
Power supply
OFF
SON (Servo-on)
ABSM (ABS transfer mode)
ABSR (ABS request)
ABST (ABS transmission data ready)
ABSB0 (ABS transmission data bit 0)
ABSB1 (ABS transmission data bit 1)
Base circuit
RD (Ready)
Occurring
Warning
Not occurring
*1 Page 299 Absolute position data transfer protocol
*2 When the magnetic pole detection is performed, [AL. 093 ABS data transfer warning] occurs.
First servo-on after power on
ON
OFF
ON
During ABS transfer
OFF
*1
ON
OFF
*1
ON
OFF
*1
Absolute position
data
100 ms
ON
OFF
15 s or less
Magnetic pole
ON
detection time
Operation
possible
OFF
*2
Second or later servo-on
During ABS transfer
*1
*1
*1
Absolute position
data
100 ms
Operation
possible
11 USING A DIRECT DRIVE MOTOR
11.7 Absolute position detection system [A]
11
429