7 ABSOLUTE POSITION DETECTION SYSTEM
7.1 Outline
101
7
7
ABSOLUTE POSITION DETECTION SYSTEM
Precautions
• If [AL. 025 Absolute position erased] or [AL. 0E3 Absolute position counter warning] occurs, execute homing again.
• For the replacement procedure of the battery, refer to the following.
• Once the absolute position detection system has been setup, absolute position data will not be lost even if the connector
connected to CN2 is removed.
• Replacing batteries will erase the absolute position data.
• If the absolute position data is erased, execute home position setting before operation.
• When the battery is used out of specification, the absolute position data may be erased.
7.1
Outline
Characteristics
The encoder consists of a circuit designed to detect a position within one revolution and the number of revolutions.
The absolute position detection system always detects and memorize the absolute position of the machine, regardless of
whether the controller power is on/off. Therefore, once homing is performed at the time of machine installation, homing is not
needed when power is switched on thereafter.
Even if a power failure or a malfunction occurs, the system can be easily restored.
Restrictions
The absolute position detection system cannot be configured in the following conditions.
• When an incremental type encoder is being used
• Stroke-less coordinate system for infinite positioning and the like in combination with a controller other than a Mitsubishi
Electric motion module
System architecture
The following shows the architecture of the absolute position detection system.
When connecting the battery backup type absolute position encoder
For battery connection, refer to the following.
CN1_
CN2
Controller
Servo amplifier
Battery
Servo motor
Battery branch cable
Summary of Contents for Melservo-Jet MR-JET G-N1 Series
Page 1: ...MR JET User s Manual Hardware MR JET _G MR JET _G N1 Mitsubishi Electric AC Servo System ...
Page 2: ......
Page 139: ......
