KE-750_MAINTE.pdf - 第125页

- 122 - (2) Performs positioning control. (S peed control and positioning control are performed with the rotary encoder of the motor. However, the speed control of the IC head on the KE-760 is performed with the rotary e…

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5.2 Function of Boards

5.2.1 SUB CPU1 board

(1) Controls all boards in the control unit, and performs data transfer and

interrupting process, etc.

(2) Performs communication (Arcnet) with the man-machine CPU.

(3) Performs communication (RS-422) with the LA/LAHD sensor.

(4) Performs transmission/reception to/from the MATCHING board.

(5) Stores the MS parameters (EEROM).

(6) CPU: 68020 (25 MHz), FPU: 68882 (25 MHz), Memory: DRAM (4 MB),

SRAM (128 KB), EEROM (16 KB)

5.2.2 AC Servo Control Board

(1) Controls the AC servo motor of XY axes by the command of pulse train.

(Origin return operation, automatic acceleration/deceleration operation,

JOG operation, and origin sensor detection)

(2) Controls the positioning. (Speed control: Performed with the rotary

encoder of the motor. Positioning control is performed by counting the

number of pulses from the magnescale.)

(3) Performs alarm processing. (The AC servo motor is immediately stopped

when the alarm of the AC servo motor driver, the alarm of the magnescale,

or ± limit of the X and Y axes is detected.)

(4) Performs emergency stop function. (The AC servo motor of the XY/Z/θ

axes is immediately stopped when the emergency stop button is pressed.)

(5) Performs servo free function. (The driving power of the AC servo motor of

the XY/Z/θ axes is decreased and the XY/Z/θ axes are set free when the

servo free switch is pressed.)

(6) CPU: 68000 (10 MHz), Positioning management counter: 24 bits

5.2.3 Z/θ Control Board

(1) Controls the AC servo motor of the Z/θ axes by an analog command.

(Origin return operation, automatic acceleration/deceleration operation,

JOG operation, and zero phase detection)

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(2) Performs positioning control. (Speed control and positioning control are

performed with the rotary encoder of the motor. However, the speed

control of the IC head on the KE-760 is performed with the rotary encoder

but the positioning control is performed with the dedicated encoder of

18000 pulses. This is necessary because a high resolution is required for

the IC head which is a dedicated head used to mount the parts such as

QFP, etc.

IC head θ: 0.005°, Z: 0.01 mm

General chip head θ: 0.02°, Z: 0.01 mm

(3) Performs alarm processing. (The AC servo motor is immediately stopped

when the alarm of the AC servo motor driver is detected.)

(4) Supplies +5/12/24 VDC power to the head main board.

(5) Controller IC: LM628

5.2.4 I/O control board

A serial data of 16-bit length is used to communicate between the I/O control

board and another unit board. The relation ship between the I/O control board

and each unit board and the function of the board are explained here. CPU:

68000 (12 MHz) on the I/O control board performs the control of each unit

board.

(1) Head main board (Head unit)

① Drives the solenoid for vacuum and blow.

② Reads the vacuum data detected with the vacuum sensor (R).

③ Detects the deceleration sensor of the Z axis (R).

④ Turns on and off the bad mark sensor (W), and reads the detected

value (R) (Optional).

⑤ Performs interface to the height sensor board (Optional).

(2) Carriage unit board (Carriage unit)

① Drives the BU (backup pin), the stopper pin, and the solenoid for

outline (W).

② Detects the IN/WAIT/CENT/OUT/BU-up/BU-down sensors (R).

③ Drives the induction motor for IN/OUT (W).

④ Drives the stepping motor for CENT (the data of pulse rate, speed,

moving distance, etc.) (W)

⑤ Turns on and off the 1st and 2nd marks of the CAL block (W).

⑥ Opens (W) and checks (R) of the ATC.

⑦ Moves up and down (W) the bank of the tool change table, and its

check (R).

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(3) Base unit board (Base unit)

① Turns on and off the OCC and BOC lights (W).

② Turns on and off the VCS, BGA, and CSP (optional) lights (KE-760).

③ Turns on and off, and flashes the beacon lamp (W).

④ Monitors the source pressure level, and performs the interrupt

processing (INT).

⑤ Detects the feeder rise status (R).

⑥ Supplies +6/24 VDC power to each option feeder.

(4) Feeder unit board (Feeder unit)

① Independently drives the solenoid of the feeder knock pins (80 pins)

(W).

② Reads Ready/Busy signals of the stacked stick feeder (optional) (R).

③ Disables the stick feeder of 32-mm adhesive type (optional) (W).

The signal of item ① is parallel data. However, the signals of items ② and

③ are converted to 16-bit serial data on the feeder I/F boards each installed in

the main unit and in the bank.

(5) Operation board

① Reads the status (start, stop, etc.) of the switches on the operation

switch board installed at the front and back of the cover (R), and turns

on and off the LEDs (ORIGIN, servo free) (W).

② Read the status of each key on the HOD (R), and turns on and off the

LEDs (W).

③ Notifies the status of the cover open switch, the servo free switch, and

the emergency stop switch to the AC servo control board.

(6) Interface to external equipment

① Interface for the MTC.

② Interface for SMEMA (Ready IN/OUT)

5.2.5 MATCHING board and IMG-P board

The MATCHING board and the IMG-P board are used as a pair, and they are

used for image processing. A dedicated bus, not the VME bus, is used for the

data transmission of the MATCHING board and the IMG-P board. (These

busses are printed on the back of the boards.) A 256-step imaging is used.

Function of MATCHING board

① Controls image processing and notifies the result of the image processing

on the CPU1 board.

② Computes the template matching (Pattern matching function).

③ CPU: 68040 (33 MHz), Memory: 8 MB