EDIT.
SHEET
DRAW. NO.
CUST.
TITLE
57
93
DESCRIPTIONDESIG.DATE
Power Failure Backup Module
Descriptions
A-53866E-464
(5) Control of control power supply
<1> For the A06B-6077-H002 (200V type)
After a power failure occurs, controls the supply of the DC link voltage to the control supply for
the PSM and the CNC.
Internal circuit
AC200V
Power failure backup module
Switching circuit
Fuse
PSM
CNC
Other control
devices
DC link
CX13
CX24
Supplement capacitor
unit (only 1)
CX12
Pre-charge
circuit
Sub module C (up to 8)
TB1
TB2
In normal operation, the200 VAC input to CX12 is output to CX13. When a power failure
occurs, the DC link voltage is output to CX13, instead of 200 VAC, to maintain the power supply
for the PSM, CNC, and other control devices.
<2> For the A06B-6091-H002 (400V type)
After a power failure occurs, controls the supply of the voltage (300 VDC) resulting from stepping
down the DC link voltage to the control power supply for the PSM and the CNC.
Internal circuit
Power failure backup module
Switching circuit
Fuse
PSM
CNC
Other control
devices
AC200V
DC link
CX28
CX27
Stepdown converter
DC300V
TB1
In normal operation, the200 VAC input to CX27 is output to CX28. When a power failure
occurs, the voltage (300 VDC) resulting from stepping down the DC link voltage is output to CX28,
instead of the200 VAC, to maintain the power supply for the PSM, CNC, and other control devices.