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INFINITY EX RAIL S YSTEM M ODULE ADJUS TMENTS AN D SETTIN GS 15.1 2 Technical Reference Manual Chapter Issue 2 Jan 04 ADJUSTMEN TS AND SETTINGS Rail Lif ted Sensors Both the left and right rail lifted sensors are through…

INFINITY

RAIL SYSTEM MODULE

SEQUENCES

Chapter Issue 2 Jan 04 Technical Reference Manual 15.11

SEQUENCES

Homing Sequence The rail system is homed during machine initialization only, (during power-up

or upon exiting diagnostics).

When the home command is received the rear moving rail is driven (in the

reverse direction) to the rear of the machine until the home vane, attached to it,

is detected by the rail home sensor. Upon detection (sensor ON) the motor is

driven in the opposite direction until the vane clears the home sensor and the

motor stops (sensor OFF).

This position has a set dimension of 508.5mm to 508.7mm measured between

the inside of each rail, (Positioning section of this chapter refers)

Figure 15-8 Rail Timing Diagram

Rail Positioning There is a fixed relationship between steps of the stepper drive motor and rail

movement (in mm) due to the gearing ratios and pitch of the driving leadscrews.

Therefore when a width is selected this is multiplied by the steps/mm factor and

sent to the stepper drive system.

All positions are relative to the home position.

Home Position

Fwd

Stepper

Motor

Home

Sensor

12V

Stopped

Rev

Vane leaves sensor

Vane enters sensor

INFINITY

RAIL SYSTEM MODULE

ADJUSTMENTS AND SETTINGS

15.12 Technical Reference Manual Chapter Issue 2 Jan 04

ADJUSTMENTS AND SETTINGS

Rail Lifted Sensors Both the left and right rail lifted sensors are through beam optos and mounted

either side of the rising table so to detect premature lifting of the rear rail, as

described in the Drives and Sensors section of this chapter.

The opto vane brackets are height adjustable and are set using a 0.5mm feeler

gauge, so that if either opto is moved by a minimum of 0.5mm above the vane

setting (whilst the table is in the home position), then the LED switches to OFF

indicating an error warning to the operator.

NOTE

Rail Lift Setting figure of this chapter also refers.

Figure 15-9 Rail Lifted Sensor Location

Rail Width Home

Sensor

The rail width home sensor is used to find the home position of the moving rail

and is described in detail in the Sequences section (Homing Sequence) of this

chapter.

The sensor is mounted on an adjustable bracket which enables the position

between the front and rear rails to be set at 508.5mm - 508.7mm, (measured

between the inside edges of both rails, when the moving rail is in the home

position).

A fine adjustment can be made to the set rail dimension by slackening the sensor

forward securing screw and turning the home sensor adjustment screw (Figure

Rail Home Setting refers) in accordance with the table on the next page.

Opto Vane Bracket

Height Adjuster

Rail StopBarOpto Vane Bracket

Height Adjuster

View on Right Hand Side of Machine

NOTE

Rising Table at home position

Rail LiftedRightSensor

(left sensorsimilar)

INFINITY

RAIL SYSTEM MODULE

ADJUSTMENTS AND SETTINGS

Chapter Issue 2 Jan 04 Technical Reference Manual 15.13

NOTE

Rail width home sensor checks are also required if rail parallelism adjustments

are carried out

Figure 15-10 Rail Width board Sensor Location

Home Sensor Screw Adjustment Set Rail Dimension

1 full turn clockwise + 0.5mm

1 full turn anti-clockwise - 0.5mm

Rail Home

Sensor

Rail Home

Opto Flag

(home vane)

508.5 - 508.7 mm

Between inside edges of rails

View on Right Hand Side of Machine