Dolev 800 - Electronic System -
Standard Controller - CRI Board(503D29069)

Std. Controllr.
Figure 6-9. CRI Brd.
FCO 17248
FCO 15914
FCO 19649 - CRI Board
FCO19100 - Solving white stripes at "stop spiral"

Description
Line Control and Time Diagnostics
Adjustments
Replacement
Check

Description

Board Functions
PC Interface and NVM
Microcontroller and Peripherals
Microstep Clock Control
Theory of Operation

Board Functions

Service motion
Exposure carriage motion and control at resolutions between 60 and 200
Stop spirals
Storing machine parameters on the NVM

PC Interface and NVM

The interface offers PC control over the microbus for XILINX loading and the WCS. The NVM (E2PROM) is accessed only by the PC. The interface between the CPU and the 80196 controller consists of:

In buffer register
Out buffer register
In control register
Status buffer
Address decoder

Microcontroller and Peripherals

I/O control signals: shutter, detectors, etc.
CODE and DATA RAM
Address decoding
HSI for time measurement
HSO for full step service motion
Interrupt services

Microstep Clock Control

Microstep clock controls the motor movement while following its position. Running the motors by way of generating CLKS from the CLK generator, and division into variable values depending on the request. The purpose is to receive different speeds.

Microstep signal generation is performed by accumulation.

10 / 128 microsteps per step division (usually 125)

Sin, Cosine, polarity RAM

Up and Down counter

Amplitude control and adjustment

Sin, Cosine phase control and adjustment

Theory of Operation

The Continuous Resolution Indexer (CRI) (503D29069) board controls the shutter during film exposure. The board controls the Stepper Driver, and the Stepper Driver in turn determines the speed of the lead screw movement. The carriage speed differs for every resolution. The CRI works in microstep during exposure. Control of both the lead screw movement and the spinner speed is necessary.

The CRI drives a two phase stepper motor by way of the stepper driver.

Special diagnostic mode (service) movements are possible, as is "Stop and Wait" for data procedures. The motion can be in full or half step, up to 10,000 S/sec.

The possible exposure spiral movements are in microstep mode 80-600 S/SRC. The achievable exposure resolutions are from 28-200 dots/mm.

Three frequency sources determine the spiral mode:

Internal clock

External clock

Spinner encoder clock

The exposure accuracy is 1 um/line, non-accumalative.

The CRI is controlled by the CPU. The CPU has access to all of the data I/O space for diagnostics.

The CRI is based on an Intel 80196 controller. The board has programmable (software configured) gate array. There is an I2C No.2 serial bus.

Line Control and Time Diagnostics

PLL
Expose clock generator
Time measurements of digital signals (for Diagnostics and pre-exposure checks)

The encoder phase detector synchronizes stepper start motion to the spinner signals. It also counts the encoder clock starts from the index.

The block generates control signals to the motor drivers.

Adjustments

Replacement

Note: The NVM parameters (all tables) are stored on the CRI board. Before removing the board, save the tables on the PC diskette, and after replacement, restore the tables.

1. Switch the machine OFF.
   
   
2. Open the right side door of the Dolev 800 and the standard controller cover.
   
   
3. Release the CRI board and remove it from the crate.
   
   
4. Install the new CRI board.
   
   
5. Close the right side door of the Dolev 800 & the standard controller cover and restore power.

Check

1. Turn the machine on.
   
   
2. Run Diagnostics and verify that the CRI board diagnostic does not fail.