Fluidwell F030-A, Руководство пользователя

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Page 28
FW-F030-P-M_v0404_01_EN.docx
Pulse-signal NPN / NPN-LP
The F030-P is suitable for use with flowmeters which have a NPN output signal. For reliable pulse
detection, the pulse amplitude has to go below 1.2V. Signal setting NPN-LP employs a low-pass
signal noise filter, which limits the maximum input frequency (read chapter 3.3.2).
Fig. 17: Terminal connections - NPN signal input.
Pulse-signal PNP / PNP-LP
The F030-P is suitable for use with flowmeters which have a PNP output signal. Terminal 3 offers
3.2V which has to be switched by the sensor to terminal 2 (SIGNAL). For a reliable pulse detection,
the pulse amplitude has to go above 1.2V. Signal setting PNP-LP employs a low-pass signal noise
filter, which limits the maximum input frequency (read chapter 3.3.2).
A sensor supply voltage of 8.1V DC can be provided with option PD on terminal 6.
Fig. 18: Terminal connections - PNP signal input.
Active signal
Active signal selection may well be desired in the case of option PD being supplied for sensor
supply.
Fig. 19: Terminal connections - Active signal input.