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3 Wiring
3
Theoretical lifetime of battery:
The calculation below only considers the current consumed by the encoder and does not cover the current
consumed by the battery itself.
AssumethatthedriveworksnormallyforT1inaday,themotorrotatesforT2afterthedriveispoweredoff,
andthemotorstopsrotatingforT3afterpoweroff[unit:hour(H)]
Example:
Table 3-13 Theory lifetime of absolute encoder battery
Item WorkingTime1 WorkingTime2
Numberofdaysthebatteryworksunderdifferent
workingconditions(day)in1year
313 52
T1 (H) 8 0
T2 (H) 0.1 0
T3 (H) 15.9 24
● Batterypowerconsumedin1year=(8H*2uA+0.1H*80uA+15.9H*10uA)*313+(0H*2uA+0
H*80uA+24H*10uA)*52≈70mAH
● Battery theory lifetime = Battery capacity/Battery power consumed in 1 year = 2,600 mAH/70 mAH =
37.1 years