IAI America MSEP - Manual (Page 207)

Chapter 4
Absolute Reset and
Absolute Battery
199
4.2.1 Absolute encoder backup specifications
Item Specifications
Battery model AB-7
Quantity 1 pc/axis (8 units max. / 8 axes)
Battery voltage 3.6V
Current capacity 3300mAH
Reference for battery replacing timing (Note 1) Approx. 3 years
(It varies significantly by the effects of the
usage condition)
(Note 1) Replace the battery regularly.
4.2.2 Absolute Battery Charge
Please have the battery charged for more than 72 hours before using for the first time or after
replacing with a new one. The battery gets charged while the controller is supplied with 24V
power.
Data holding time
Upper limit of encoder revolution at
power-off [rpm]
Parameter
No.19 setting
When the connected
actuator is a model
other than RCA2-***N;
When the connected
actuator is RCA2-***N;
Reference for
battery retaining
time [days]
Holding time per
hour of battery
charge time
(reference) [H]
0 100 75 20 6.6
1 200 150 15 5.0
2 400 300 10 3.3
3 800 600 5 1.6
(Note 1) Followings are the reference values of time assuming the battery is new.
Leaving the controller power OFF for more than the data holding time will lead to a loss of the
data. Have the battery charged as early as possible.
There is life to the battery and the duration for data holding will decrease. Replace the battery
with a new one if the retaining time is remarkably dropped even with enough charging time.
(Example) From Monday to Friday : charge for 8 hours per day, discharge for 16 hours,
Saturday and Sunday : When using with discharge
Connected axis : Any model except for RCA2-***N
Storage for 120 [H] if fully charged
1) If parameter No.19 = 3 setting;
Total charge amount : Operation hours per day 8 [H] × Retaining time per charge for 1
hour 1.6 [H] × Weekday 5 [days] = 64 [H]
Total discharge amount : Stopped time during night 16 [H] x Weekday 5 [days] + Stopped
time on Saturday and Sunday 48 [H] = 128 [H]
Total discharge amount : 16 [h] × 5 [day] + 48 [h] = 128 [h]
ĺ If starting on Monday with a full-charge, the total amount of the discharge in a week
exceeds total amount of battery charge in 64 [H], thus the fully charged storage
decreases by 64 [H]. Therefore, it is necessary to have the battery fully charged in
every 10-day period.
2) If parameter No.19 = 2 setting;
Total charge amount : Operation hours per day 8 [H] × Retaining time per charge for 1
hour 3.3 [H] × Weekday 5 [days] = 132 [H]
Total discharge amount : Stopped time during night 16 [H] x Weekday 5 [days] + Stopped
time on Saturday and Sunday 48 [H] = 128 [H]
ĺ If starting on Monday, because the total amount of charge has exceeded the total
amount of discharge, it is not necessary to have a continuous full charge. 4-hour
charge is stored every week. Please note, however, the upper limit is 120 [H].