Azbil Micro Flow MQV0002, User Manual

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3-7
Chapter 3. MOUNTING AND WIRING
„  Wiring
CAUTION
Do not apply a negative voltage or a voltage exceeding 5 V to the external setup voltage input
terminal. Doing so might cause malfunction or equipment failure.
When using a relay for external contact input and/or external 3-way switching input, always
use a relay designed for micro-current use (with gold contacts). Failure to do so could cause
faulty contact, resulting in malfunction.
If there is a risk of a power surge caused by lightning, use a surge protector to prevent fire or
equipment failure.
Gas type switching by external contact input, flow rate switching, and analog input/output
voltage range switching by external 3-way input switching should be done only after setting
the operation mode to fully closed. Switching while controlling could cause large fluctuations.
Be sure to check that the wiring is correct before turning the power on. Incorrect wiring could
cause damage or malfunction.
„ z
Connector pin layout
Connector model No. (device side): HIF3BA-20PA-2.54DS
20 19
2
1
View from connector insertion side
Manufacturer: HIROSE ELECTRIC CO., LTD.
„ z
Table of compatible connectors (all made by HIROSE ELECTRIC CO., LTD.)
Connector type
Compatible connector
model No.
Compatible contact
model No.
Compatible wire
Contact crimp type HIF3BA-20D-2.54C HIF3-2226SCC AWG#22 to #26
(single wire allowed)
Cable clamp type HIF3BA-20D-2.54R Not required AWG#28 (flat cable only)