Yokogawa NFAP135-S50 Pulse Input Module Trusted supplier

FAQ

What types of signals can the NFAP135 receive?
It supports contact ON/OFF, voltage pulse, and current pulse inputs from 2-wire or 3-wire transmitters.

What is the maximum input frequency supported?
The module supports up to 10 kHz, but for dry contact inputs the limit is lower, such as 800 Hz or below depending on wiring capacitance.

Is input signal isolation provided between channels?
Yes, the module provides isolation between each input channel and between input and system.

Can the module supply power to transmitters?
Yes, selectable 12 V DC or 24 V DC power is available with current limits of 40 mA and 30 mA respectively.

Is there support for filtering contact bounce (chatter)?
Yes, a noise elimination filter can be enabled for mechanical contacts at frequencies up to 10 Hz.

What is the minimum detectable pulse width?
The minimum pulse width is 40 μs, though for dry contacts this increases with load capacitance.

Are shunt resistors configurable?
Yes, options include OFF, 200 Ω, 500 Ω, and 1000 Ω depending on the input mode.

What are the installation dimensions and weight?
The module measures 32.8 × 107.5 × 130 mm and weighs approximately 0.3 kg.