HEIDENHAIN iTNC 530 HSCI Service Manual

23 – 376 HEIDENHAIN Service Manual iTNC 530 HSCI
23.5 Checking the potentiometers
The potentiometer setting is shown in the following PLC words:
 W492 (= S override)
 W494 (= F override)
Potentiometer
values in the
PLC TABLE
You can use the table for the PLC words to find out, whether the control receives the potentiometer
signal.
Proceed as follows:
8 Switch on the machine.
8 Press the EMERGENCY STOP button.
8 Call the table with the PLC words. --> See ”The TABLE function” on page 11 – 119.
8 Place the cursor on W492 or W494.
8 Select decimal display (soft key HEX<->DECIMAL).
8 Turn the potentiometer to be examined.
8 Check, whether the display changes from 0 to 15000 (with nonlinear characteristic curve)
or from 0 to 150 (with linear characteristic curve).
The characteristic curve is defined in MP7620, bit 3.

HEIDENHAIN iTNC 530 HSCI Specifications

General

Brand	HEIDENHAIN
Model	iTNC 530 HSCI
Category	Control Systems
Language	English