User's Manual AXF Magnetic Flowmeter Integral ... - Yokogawa

4. WIRING
4.2.4 Wiring Connections
PF1/2
Gasket
WARNING
Before wiring, be sure that the power supply for
AXFA11 or AXFA14 converter has been turned
off to prevent an electrical shock.
Figure 4.2.5
Cable
Tightening gland
Washer
When working on conduit pipes or flexible pipes (PF1/2 only)
Waterproof Gland with Union Joint
(Optional code EU)
F0421.EPS
(1) Removing Cover (Size 2.5 to 1000 mm (0.1
to 40 in.))
Loosen the cover locking screw clockwise using a
hexagonal wrench (nominal size 3 mm) to unlock the
cover. (Upon shipment from the manufacturing plant,
the cover is unlocked.) Hold the flowtube with your
hand and remove the cover by turning it in the direction
of the arrow as shown below.
Plastic gland
F0422.EPS
Figure 4.2.6
Plastic Gland (Optional code EP)
(3) Conduit Wiring
When wiring the conduits, pass the conduit through the
wiring connection port, and utilize the waterproof
gland to prevent water from flowing in. Place the
conduit pipe on an angle as shown in Figure 4.2.7.
Install a drain valve at the low end of the vertical pipe,
and open the valve regularly.
Figure 4.2.8
F0424.EPS
Removing the Terminal Box Cover (Remote
Flowtube)
(2) Terminal Configuration
When the cover is removed, the connection terminals
will be visible.
Drain valve
Terminal
Symbols
A
B
C
EX1
EX2
Description
Flow signal output
Excitation current input
Protective grounding
(Outside of the terminal)
F0423.EPS
F0425.EPS
Figure 4.2.7
Conduit Wiring
Figure 4.2.9
Terminal Configuration (General-Purpose
Use, Submersible Type, Sanitary Type, Size
2.5 to 400 mm (0.1 to 16 in.))
4-11
IM 01E20D01-01E