FANUC Power Mate i-MODEL H CONNECTION MANUAL (HARDWARE)

B63173EN/03
5. POWER SUPPLY UNIT CONNECTION
45
In a system using the Series Power Mate i, batteries are used as follows:
Use
Component connected to
battery
Backup in the CNC data CNC
Preservation of the current position indicated
by the absolute pulse coder built into the motor
Servo amplifier
Preservation of the current position indicated
by the separate absolute pulse coder
Separate detector interface
unit
Preservation of the current position in analog
servo mode
Analog servo interface unit
Part programs, offset data, and system parameters are stored in SRAM
memory in the control unit. The power to the SRAM memory is backed
up by a lithium battery mounted on the front panel of the control unit. If
the battery is connected correctly, the data above is not lost when the main
power is turned off. The backup battery is mounted on the control unit
at shipping. This battery can maintain the contents of memory for about
a year.
When the voltage of the battery becomes low, alarm message BAT
blinks on the CRT or LCD screen and the battery alarm signal
BAL<F001#2> is output to the PMC. When this alarm is displayed,
replace the battery as soon as possible.
If the voltage of the battery becomes any lower, contents of SRAM
memory can no longer be backed up. Turning on the power to the Power
Mate i in this state causes system alarm 910 (SRAM parity alarm or
SRAM ECC alarm) to occur because the contents of SRAM memory are
lost. Clear the entire memory and reenter data after replacing the battery.
5.9
BATTERIES
5.9.1
Battery for Data
Backup (3VDC) in CNC

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