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Adjustment Instr uctions MTC 2 5 Feed axes 12/2007 Edition 5.5 Light barriers 81 5.5.4 Checking and setting the WTC safety queries NOTE The WTC safety queries each comprise a light barrier which is interrupted by th e fr…

5 Feed axes Adjustment Instructions MTC 2

5.5 Light barriers 12/2007 Edition

5.5.3 Checking and setting the handle sensors

NOTE

The handle sensors each comprise a reflecting light barrier which can detect the handle of the

WTC or the side of the handle of the WTC XL. An LED indicates the switching status of the sensor.

Fig. 5.5 - 2 Checking and setting the handle sensors

Key

1. Reflecting light barriers of the handle sensors

2. Mounting plates with clamping screws

3. LEDs

 Unscrew the clamping screws of the mounting plate.

 Move the mounting plate in the direction of the WTC until the reflecting light barrier responds

(the LED will change its status). Fix the plate in place there.

 Ensure that the status of the LED remains the same when you move the locked WTC. If ne-

cessary, move the mounting plate a little further in the direction of the WTC.

 Firmly tighten the clamping screws.

Adjustment Instructions MTC 2 5 Feed axes

12/2007 Edition 5.5 Light barriers

5.5.4 Checking and setting the WTC safety queries

NOTE

The WTC safety queries each comprise a light barrier which is interrupted by the front edge of the

WTC or the WTC XL. Two LEDs indicate the switching status of the sensor.

NOTE

Make the settings for the feed axis of tower 1 first and then the feed axis of tower 2.

The light barrier holder in the middle accepts the light barriers for both axes but cannot be set

separately. When making settings, both the holder for the sender and the holder for the receiver

of the light barrier pairs must be moved.

Fig. 5.5 - 3 Checking and setting the WTC safety query

Key

1. Light barrier for the WTC safety query for tower 1

2. Light barrier for the WTC safety query for tower 2

3. Light barrier holder with clamping screws

5 Feed axes Adjustment Instructions MTC 2

5.5 Light barriers 12/2007 Edition

 Unscrew the clamping screws on the middle holder and move it by the following fixed adjust-

ment amounts (see Fig. 5.5 - 3):

-Tower 1, left side = 3 mm

-Tower 1, right side = 3 mm

-Tower 2, left side = 4 mm

-Tower 2, right side = 5.5 mm

 Ensure that the status of the LEDs remains the same when you move the locked WTCs. If ne-

cessary, move the holders a little further away from the front edge of the WTCs.

 Firmly tighten all clamping screws and varnish them when they have been set.

NOTE

The following must be observed for a functional test on the light barrier setting:

- Light barriers must not respond when the lifting axes are moved. When a preliminary setting has

been made, the lifting axis must therefore be moved in 0.1 mm steps over a distance

corresponding to the height of a WTC next to the light barrier to test the setting.

- If the light barrier responds, the emergency stop function is triggered. The emergency stop

status can only be reset, however, when the receiver receives a signal from the transmitter

again.

Loosen the clamping screws on the light barrier holder (transmitter and receiver). Move them

both in the direction of the feed track (away from the tower) until the receiver’s status indicator

switches from red to green. When moving the lifting axis, ensure that the front edge of the WTC

is positioned within the capture area (chamfer) of the adjustment gauge (see Fig. 4.1 - 1).