Azbil MVC10A, User Manual

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Installation of this instrument Azbil Corporation
2-6 Model: MVC10A/10F - Multivariable Air Flow Meter
2-3: Electrical wiring
Introduction
To operate this instrument, wiring of the main power supply (90 to 250 V DC)
is required. The electrical wiring of this instrument is described below as to the
following items:
• Connecting positions of the main unit and terminal wiring diagram
• Cable specifications
• Cabling
• Wiring connection of current output
• Wiring connection of pulse output
Connecting positions of the main unit
In removing the cover for wiring operation, first loosen the four Philips screws of the
cover.
The cover swings open to an angle of 100 to 120°. Be sure to refrain from violently
opening it, which may break the circuit in the internal wiring.
Figure 2-5 below shows the main unit's terminal board and gives wiring and
grounding terminal diagrams.
Terminal board Terminal board Terminal connection Terminal connection Side view Side view
(Screw size: M2.6)
External ground
Internal ground
Terminal connection
Marking
N L
G
P+ COM
|+ |-
R+
Description
Power supply
Ground
Pulse output
Analog output
(unused)
Fig. 2-5 Main unit's terminal board and wiring and grounding terminal diagrams
WARNING
• Before opening the cover to perform a wiring operation, turn off the power switch to prevent
electric shock.
• Never perform wiring while the system is energized. Otherwise an electric shock may occur.
Note:
• Follow the indication for connecting positions and perform the wiring correctly.
Otherwise equipment failure may result.
• Power source lines in particular carry a large-capacity power, double-check the
wiring positions.