Digitronic Digital Cam Switch Unit
Automationsanlagen GmbH CamCon DC50/51
4.2.3. Incremental measuring system input
Systems with 90° phase shift signals such as turning angle encoders, glass measuring rods or flow
measuring devices.
At the present time incremental measuring inputs for the CamCon DC16/50/51/115/300 and DC1756
are available as an option. We differentiate between three signal levels:
- 24V PNP Signal inputs (Order number Option: J)
- 5V RS422 Signal inputs (Order number Option: I)
- Hiperface Signal inputs (Order number Option: H)
Note: For the CamCon DC16 and DC300 only the version with 24V PNP signal is available. For
the CamCon 1756-DICAM the version with 24V PNP signal and Hiperface Signal is
available. If a different signal level is necessary, this can be converted externally with the
INCDRV converter.
In all cases the CamCon supplies the measuring system with 24Volt/DC or in CamCon DC115
optionally with 5 or 24Volt/DC. As a counting signal the measuring system gives out two impulses at a
time shifted by 90° (A + B). These are counted in the CamCon and are evaluated as position values. In
addition, for each rotation another zero impulse (Clear 1) is given out for synchronisation purposes. In
order to stop synchronisation (zero setting) of the counter, a further clear signal (Clear 2) is available
on the CamCon.
The signals Clear 1 and Clear 2 are to standard AND linked and can be
changed in their function with the software. See Chapter "7.4.1.6.3.
Incremental - measuring system" on page 49
Clear 1
Clear 2
B Imp.
A Imp.
4.2.3.1. Incremental measuring system input with 5V RS422 level
If the 5V RS422 system is used, all signals of the measuring
system input must be active, otherwise the input conditions are
undefined. If no signal is available for one of the two Clear
inputs, then this input must be switched to mass on the (+)
signal in order to switch the input to low. The inputs of the
measuring system can be activated with a maximum voltage of
5V. Please pay attention to the power supply of the angle
encoder which can be 5Volt as well as 24Volt. Only the CamCon
DC115 can at present provide a voltage of 5Volt for the supply of
the angle encoder.
4.2.3.2. Incremental measuring system input with 24V PNP level
If a 24V PNP signal is used for data input, then only the (+)
signals of the inputs may be connected. The (-) signals must
stay inactive in this case. The connection of such a measuring
system requires a change of the interal switch system and must
therefore be stated on the order form.
Note: At the incremental input of the CamCon DC16,
DC300 and DC1756 no (-) signals are available.
,Version from: Aug. 04 Page: 21
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