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Mitsubishi Electric MR-MQ100 User Manual page 117

Motion controller
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6 INSPECTION AND MAINTENANCE
(f) Flowchart for when "BT " displays on 7-segment LED
"BT1" or "BT2" displays when the battery voltage is lowered.
"BT1" or "BT2" displays at the following cases.
• BT1: Battery voltage 2.7V or less
• BT2: Battery voltage 2.5V or less
The following shows the flowchart for when "BT
"BT " displays on 7-segment LED
Turn off the Motion controller
power supply.
Replace the battery.
Turn on the Motion controller
power supply.
Does "BT
disappear on 7-segment
LED (Confirm ON/OFF by
monitoring SM )
REMARK
If SM51,SM58 turns on, the contents for the data (Refer to Section 6.5.) of SRAM
built-in Motion controller cannot be guaranteed.
It is recommended to back-up the battery periodically.
"
NO (SM58 or SM51 ON)
YES (SM58, SM51 OFF)
END
6 - 20
" displays.
H/W fault
Explain the error symptom and get
advice from out sales representative.

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