Fuji Electric ALPHA7, User Manual

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CHAPTER 11 ABSOLUTE POSITION SYSTEM
11-2
Specifications
11
11.1 Specifications
11.1.1 Specification List
Item Description
Method Battery backup method
Battery Lithium battery (primary battery, n3.6 [V])
Max. rotation range Home position ±32767 [rev]
Max. rotation speed at power failure 6000 [r/min]
Service life of battery About 35000 hours (life without power turned on)
Lithium content 0.5 [g]
It is recommended to replace the battery periodically (every three years or more
frequently) despite the power-on or shutdown state.
11.1.2 Precautions
 Marine or air transport of battery (lithium-metal battery)
If transporting lithium-metal batteries on their own, packaged together with devices, or installed in
devices, it may be necessary to file a dangerous object application.
Please contact the transport company if transporting lithium-metal batteries.
 Conditions blocking establishment of absolute position system
The absolute position system is not established under the following conditions.

The electronic gear setting is changed after position preset.
 The command pulse ratio is changed after position preset.
The absolute position system can be established even under speed control or torque control.
 Encoder cable
Use an encoder cable with battery (model: xxxxxxxxx).