Chapter 4 Option and Peripheral Devices
4–7
4-1-2 Battery option for absolute position system
A battery or battery unit must be provided for the absolute position system.
Battery option specifications
Item Battery unit
Type MDS-A-BT2 MDS-A-BT4 MDS-A-BT6 MDS-A-BT8
No. of backup axes 2 axes 4 axes 6 axes 7 axes
Battery continuous back up time Approx. 12,000 hours
Battery useful life 7 years from date of unit manufacture
Data save time during battery
replacement
HS-MF : 2 hours at time of delivery, 1 hour after 5 years
HS-RF, -SF : 20 hours at time of delivery, 10 hour after 5 years
Back up time from battery warning
to alarm occurrence
Approx. 100 hours
CAUTION
The battery life will be greatly affected by the ambient temperature. The above
data shows the theoretic values for when the ambient temperature of the
battery is 25°C. If the ambient temperature rises, generally the back up time
and useful life will be shorter.
<Outline dimension drawing>
MDS-A-BT2
MDS-A-BT4
MDS-A-BT6
MDS-A-BT8
100
35
34
15
30
9
15
R30
ø6 Use an M5 screw for the installation.
Unit (mm)
160
145
135
<Connection>
Instead of the terminator, connect the battery unit to the final drive unit with the
amplifier-amplifier bus cable.
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