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H. Power Supply System
(1) Finisher/Saddle Assembly
a. Outline
When the host machine is turned on, it supplies the finisher controller PCB with 24VDC and 5VDC. 24VDC is for the motors and clutches.
24VDC and 5VDC are also supplied as a relay pass drive, 5VDC is used to drive sensors and ICs on PCBs.
If a punch unit (option) is installed, power is also supplied to the punch controller PCB.
Some of 24 VDC used to drive motors is cut off when the joint switch (FJSW), front door switch (FFDDW), or stapler safety switch (FSSSW) is
open.
The block diagram of the power supply system is below.
Host
machine
b. Protective Mechanisms
A circuit breaker (CB1) is monitored to protect the 24 VDC system used to drive the motors against overcurrent. The 24-V system used to drive
the feed motor (FFM), paddle motor (FPM), and stack delivery motor (FAM) is equipped with a fuse which melts in the presence of overcurrent.
(2) Punch Unit (option)
a. Outline
When the host machine is turned on, the punch unit is supplied by the finisher controller PCB with 24-V and 5-V power.
The 24-V power is used to drive the motors, while the 5-V power is used by sensors and the ICs on the punch controller PCB.
The 24-V power to the motors will be cut off when the joint switch (FJSW) or the front door switch (FFDDW) of the finisher unit is open.
The following is a block diagram for the power supply system:
b. Protective Mechanisms
The 24-V system used to drive the punch motor (FPNM) and the punch horizontal registration motor (FPSM) is equipped with a built-in fuse
which melts in the presence of overcurrent.
Joint switch
(FJSW)
24VC
Circuit Breaker
(CB1)
Finisher
controller PCB
Circuit protector
(CP2)
5VDC
24 V
Finisher
Punch controller PCB
controller
PCB
5 V
MX-FNX2/AR-PN1/MX-RBX1 OPERATIONAL DESCRIPTION 5 – 17
Front door switch
(FFDDW)
Stapler safety switch
(FSSSW)
24V
24V
24V
5V
5V
Punch controller PCB
(punch unit; option)
Relay interface PCB
24 V
5 V
5 V
Motor
Motor
Clutch
Sensor
Logic system
Motors
Sensors
Logic system
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