Page 257 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

Steps in memory operation
- Press the MEMORY mode selection switch.
- Select a program from the registered programs. To do this, follow the steps below.

- Press to display the program screen.
- Press address
- Enter a program number using the numeric keys.
- Press the [O SRH] soft key.
- Press the cycle start switch on the machine operator’s panel. Automatic operation starts, and the cycle start
LED goes on. When automatic operation terminates, the cycle start LED goes off.
To stop or cancel memory operation midway through, follow the steps below.
Stopping memory operation

- Press the feed hold switch on the machine operator’s panel. The feed hold LED goes on and the cycle start
LED goes off. The machine responds as follows.
- When the machine was moving, feed operation decelerates and stops.

- When dwell was being performed, dwell is stopped.
- When M, S, or T was being executed, the operation is stopped after M, S or T is finished.
- When the cycle start switch on the machine operator’s panel is pressed while the feed hold LED is on, machine
operation restarts.
Terminating memory operation
- Press the key on the MDI panel.
Automatic operation is terminated and the reset state is entered.

- When a reset is applied during movement, movement decelerated the stops.

Dry run and single block mode

Objectives : At the end of this exercise you shall be able to
• run the program in dry run mode and single block mode.

Dry run
The tools is moved at the federate specified by a parameter regardless of the federate specified in the program.
This function is used for checking the movement of the tool under the state that the workpiece is removed from
the table.
Steps for dry run operation (Fig 1)
- Load the program
- Select auto mode operation
- Press the dry run switch on the machine operator’s panel during automatic/memory operation.
- Press cycle start. The tool moves at the feed rate specified in a parameter.
- Rapid traverse switch can also be used for changing the feed rate.
Single block operation
Pressing the single block switch, starts the single block mode. When the cycle start button is pressed in the single
block mode, the tool stops after a single block in the program is executed. Check the program in the single block
mode by executing the program block by block.

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CITS : C G & M - Fitter - Exercise 57