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14. ABSOLUTE POSITION DETECTION SYSTEM
14.2 Specifications
(1) Specification of battery unit MR-J2M-BT
POINT
The revision (Edition 44) of the Dangerous Goods Rule of the
International Air Transport Association (IATA) went into effect on
January 1, 2003 and was enforced immediately. In this rule, "provisions of
the lithium and lithium ion batteries" were revised to tighten the
restrictions on the air transportation of batteries. However, since this
battery is dangerous goods (Class 9), requires packing compliant with the
Packing Standard 903. When a self-certificate is necessary for battery
safety tests, contact our branch or representative. For more information,
consult our branch or representative. (As of October, 2005).
Item Description
Model MR-J2M-BT
System Electronic battery backup system
Battery unit Lithium battery (primary battery, nominal 3.6V)
Maximum revolution range Home position 32767 rev.
(Note 1) Maximum speed at power failure 500r/min
(Note 2) Battery backup time Approx. 10,000 hours (battery life with power off)
(Note 3) Data holding time during battery
replacement
2 hours at delivery, 1 hour in 5 years after delivery
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.
3. Period during which data can be held by the super capacitor in the encoder after power-off, with the battery
voltage low or the battery removed, or during which data can be held with the encoder cable disconnected.
Battery replacement should be finished within this period.
(2) Configuration
CN1A
CN1B
CN3
RS-422
/RS-232C
Pulse train
command IO
Controller
Interface
unit
Base unit
Drive unit
Servo motor
Battery
unit