Azbil MVC10A, User Manual

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Installation of this instrument Azbil Corporation
2-8 Model: MVC10A/10F - Multivariable Air Flow Meter
Wiring connection of pulse output
The pulse output is an open-collector output.
The pulse count and pulse width that are output are determined in reference to the
pulse weight. For details of the pulse weight, refer to Item “Setting the pulse weight”
under Subsection 4-8, “Initial setting.”
Carry out the wiring paying attention to the voltage and polarity.
＋
＋
P ＋
COM
50 mA max.
Avoid this polarity.
External power source
30 V DC max.
Load
Protective diode
−
−
Fig. 2-7 Pulse output wire connection diagram
CAUTION
• Incorrect wiring polarity can cause damage to the equipment. Double-check the
wiring position.
• Use an external power source that meets the voltage and capacity specifications.