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Power Failure Backup Module
Descriptions
A-53866E-464
7.3 GRAVITY-AXIS DROP PREVENTION FUNCTION AT POWER FAILURE
Set the parameters for the brake control function (standard function). When the power failure detection
signal (*PFL) from "1" to "0", apply the brake and set the emergency stop (*ESP) of the CNC to "0" at the
same time.
*PFL
*ESP
Brake control relay Closed Open
Brake Brake operation
Power failure detected
Operation time: Td
*PFL: Power failure detection signal
Output from connector CX16 of the power failure backup module.
*ESP: Emergency stop signal of the CNC. (See Subsection 7.2.1.)
Setting of parameters
(1) BRKC: Use brake control function
→ Set it to enable ("1").
(2) Brake control timer
→ Set it to a value equal to or greater than the brake operating time Td.
(Increment system: msec)
Parameter number
CNC
BRKC Brake control timer
FS15i, FS15-A, FS15-B No.1883 #6 No.1976
FS0i/16i/18i/21i/30i/31i/32i
FS16/18/20/21, Power Mate
No.2005 #6 No.2083
FS0-C No.8X05 #6 No.8X83
Setting example 1 100
For details, refer to the Parameter Manual (B-65270JA, B-65150).
OTE
If you use a multiaxis amplifier (2- or 3-axis amplifier) for the vertical axis, set the above
arameters for all the axes on the multiaxis amplifier.