Yokogawa ADMAG AXF - Manual (Page 37)

IM 01E20D01-01E 4-3
4. WIRING
(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 4.1.4.
Install a drain valve at the low end of the vertical pipe,
and open the valve regularly.
F0404.EPS
Drain valve
Figure 4.1.4 Conduit Wiring
4.1.4 Wiring Connections
(1) Removing Cover
Loosen cover locking screw 2 clockwise using a
hexagonal wrench (nominal size 3) to unlock the cover.
(Upon shipment from the manufacturing plant, the
cover is unlocked.) Hold the flowmeter with your hand
and remove the cover by turning it in the direction of
the arrow as shown below.
F0405.EPS
Cover locking
screws
᭺
1
2
᭺
Figure 4.1.5 Removing the Terminal Box Cover
(2) Terminal Configuration
When the cover is removed, the connection terminals
will be visible.
F0406.EPS
+
SUPPLY
DIO
POWE
-
+
/
LN
/
I
-
+
+
-
D
-
Figure 4.1.6 Terminal Configuration
The description of the terminal symbols is shown in
Table 4.1.1.
For F OUNDATION Fieldbus protocol, please refer to IM
01E20F02-01E.
For PROFIBUS PA protocol, please refer to IM
01E20F12-01E.
Table 4.1.1 Terminal Symbols
Terminal
Symbols
Functional grounding
Power supply
Current output 4 to 20mA DC
Pulse output/Alarm output/
Status output
Alarm output/Status output
Status input
Protective grounding
(Outside of the terminal)
Description
N/-
L/+
I+
I-
DO+
DO-
DIO+
DIO-
T0401.EPS
(3) Precautions for Wiring of Power Supply
Cables
When connecting to the power supply, observe the
points below. Failure to comply with these warnings
may result in an electric shock or damage to the
instrument.
WARNING
• Ensure that the power supply is OFF in order to
prevent electric shocks.
• Ensure the protective grounding terminal is
grounded before turning the power on.
• Use insulating sleeve crimp terminals (for 4-mm
screws) for the power supply wiring and protec-
tive grounding wiring.