Weidmuller PTX800D - Scalable pulse and frequency counter Manual de usuario descargar pdf (Pagina 13)

Input voltages over 45 V DC

If the input voltage is above 45 V DC connect the internal high voltage

select jumper before applying the signal (maximum voltage is

250 V DC).

igital pulse output

The basic model PTX800D has a retransmit pulse output, which gives

a single pulse every time the total increases by one unit. The pulse

widt

h is a constant 32 ms and the minimum off time is 32 ms. The

output is an isolated, NPN, open collector transistor type and can

switch a maximum of 50 V DC or a current up to 200 mA.

Reset pulse input

Acce

pts a volt-free contact closure, or a shorting link, between pins 7

and 12. The contact must be closed for at least 100 ms.

Alarm channels one and two (optional)

Alarm channels one and two have SPDT relay contact outputs. The

rated current decreases for inductive loads so using suppressor

capacitors is recommended.

Analogue output (optional)

The analogue output provides you with a current or voltage based

signal that is proportional to the rate or total. For rate outputs, the

average value is the same as the rate, although the instantaneous

value may differ slightly for rapidly changing signals.

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Weidmuller PTX800D - Scalable pulse and frequency counter Manual de usuario Pagina 13