IAI America MSCON - Manual (Page 251)

Chapter 6
Absolute Reset and
Absolute Battery
243
6.2 Absolute Battery
An absolute battery is enclosed with the absolute type controller.
The absolute battery is used to back up the absolute data.
Connect the battery to the absolute battery connector on the front panel of the controller.
6.2.1 Absolute encoder backup specifications
Item Specifications
Battery model AB-5
Battery voltage 3.6V
Current capacity 2000mAH
2 years after use (if left unused without
power supply to controller)
Reference for battery replacing timing (Note 1)
(Ambient temperature 40°C)
4 years after use (if 50% of time with
power supply to controller)
Output of voltage drop alert signal
(output of BALM)
3.1V ±3% or less
Output of Alarm output (output of ALM) 2.5V ±8% or less
7 days if the controller is operated
continuously at 20°C.
E
rr
or
de
te
ct
io
n
*1
Warning ψ Reference for time
suspended after alert till
alarm 2.5 days if the controller is operated
continuously at 40°C.
Absolute data retaining duration at battery
replacement
15 minutes (Have the replacing work done
within this time. If it is before the alarm is
generated, absolute reset is not necessary
within this specified time.)
Note 1: Replace the battery regularly.
*1 Error detection: If the voltage of the absolute battery is dropped, the error detection
responding to the voltage is held.
Voltage PIO Signals Alarm
3.1V ±3% or less Voltage drop alert signal
*BALM (Note 2) ON
No message
2.5V ±8% or less Alarm signal *ALM (Note 2)
OFF
OEE Absolute Encoder Error Detection 2
or
OEF Absolute Encoder Error Detection 3
Note 2: BALM and ALM are the signals of active low in Remote I/O Mode, and active high in
other modes. (Note) there is no BALM Signal in Positioner Mode 3.
Replace the battery before alarm is generated due to the lamp display by BALM
signal of PLC.
If the alarm is generated, it will be necessary to absolute reset after the battery
replacement.