Hengstler Tico 772 Instruction Manual page 76

description of the multifunction counter
Input
dam
ping
(Att
enuation)
Betriebsanweisungen_772_080909 engl_überarbeitet.indd 76
4
General
The inputs A and B are limited to 60 kHz.
The Application Input is limited to 6 kHz.
Following maximum input frequencies are not to be exceeded:
Phasediscriminator single evaluation: A and B each 30 kHz (TTL 15 kHz)
Phasediscriminator double evaluation: A and B each 30 kHz (TTL 15 kHz)
Phasediscriminator quadruple evaluation: A and B each 15 kHz (TTL 15 kHz)
Unidirectional counting and directional input: Input A 60 kHz (TTL 15 kHz)
Differential counting, summation (totalizing): Input A + B 60 kHz (TTL 15 kHz)
When the application input is used as an additional count input, the above mentioned
input frequencies have to be reduced by the frequency of the application input:
If mechanical contacts are triggered (i.e. relays, switches, Reed contacts, etc.), the
input frequency has to be damped (attenuated) to 30 Hz, so as to filter out bounce
pulses. If damping to 30 Hz is selected, all inputs can be used at 30 Hz.
To reach these values the amplitude thresholds are to be hold.
06.07.2010 10:31:51