Tacho-Generator; Tacho-Generator Input; Tacho-Generator Monitoring - Kenwood KDC-9023R Service Manual

3.1.3 Tacho-generator
3.1.3.1 Tacho-generator input
The transistor chopper is set at the factory to a tacho-voltage of 20 V/1000 rev/min (e.g. by
tacho-generator 1HU1052).
Connect the tacho-generator to the terminals as shown in Table 3.10. Higher tacho voltages
must be reduced via an external divider. The internal resistance of the tacho-generator input
is about 13 kQ.
Rated speed in rev Imi n
1000
I,
200
I
1500 1800 12000
3000
Terminal
55 1
55 .2 55.3
Table 3. 70
With an actual speed value of 3 VI1000 rev/min, the resistors on the controller module must
be changed according to Table 3.11.
Axes 1and 4 Axes 2 and 5 Axes 3 and 6
New resistance val ue
in k l1
R181
R241
R248 56
R433 R436 R441 470
Table 3. 77
3.1.3.2 Tacho-generator monitoring
The tacho-generator mon itoring is set at the factory for tacho-generators with an internal
resistance of RI
>
1 kQ.
If tacho-generators with a lower internal resistance are used, remove the following resis-
tors:
.>••
' 1 1I11I'1':
- R704
- R705
- R706
(Axes 1 and 4)
(Axes 2 and 5)
(Axes 3 and 6)
When these resistors are removed, the tacho-generator cable is no longer monitored for
short circuit, but only for cable breakage .
To deactivate the tacho-generator monitoring:
- Remove R428
- Remove V79, V80 and R270
- Remove V92, V93 and R276
- Remove V 112, V 113 and R41 0
24
(Axes 1 and 4)
(Axes 2 and 5)
(Axes 3 and 6)
SiemensAG GWE 462 112 .9600.76Jg-101
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