Service manual

SERVICE MANUAL TNC 415B/425
Page 81
Issue: 20.08.95
14. Electronic Handwheels
14.1 Handwheel HR 130/330
HR 130 Id.No. 254 040 --
HR 130.001 Id.No. 249 371 --
HR 330
Id.No. 251 534 --
Adapter cable for HR 330
Id.No. 249 889 --
14.1.1 Checking the Handwheel HR 130/330
The serial handwheel HR 130 (without auxiliary keys) and HR 330 (with auxiliary keys) can be checked with an
oscilloscope. The following signals can be measured at the handwheel input X23 of LE 415B/425. The signals
have to correspond to the diagram below.
The supply voltage for the handwheel is fed via the logic unit (X23 pin 2 = 0V, pin 4 = + 12V).
pin color signal
1
2
3
4
5
6
bl
bl
gn
ye
bn
wh
EMG.
STOP
RxD
DTR
+12V
0V
pin color signal
2
4
6
8
wh
bn
ye
gn
0V
+12V
DTR
RxD