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<4. Wiring>
30
IM 01E25A01-01EN
(2) Required Power Supply Voltages
IMPORTANT
• For the 24 V power supply version (power supply
code 2), the specification of 24 V (–15% to +20%)
is the supply voltage between the terminals on
the transmitter. Because of voltage drop by cable
resisitance, the supply voltage must be applied
within the range of Figure 4.4.2.
• For AXFA11, read the applicable user’s manual as
listed in Table 1.1.
Allowable cable length m(ft)
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Cable cross section area: 1.25 mm
2
Cable cross section area: 2 mm
2
Usable voltage range (V)
22
24
26
28
30
20
28.8
338 (1100)
603 (1970)
700 (2290)
600 (1960)
500 (1640)
400 (1310)
300 (980)
200 (650)
100 (320)
0
Figure 4.4.2 Supply Voltage and Power Supply Cable
Length (Integral Flowmeter and AXW4A
Remote Transmitter)
(3) Setting Power Supply Frequency
IMPORTANT
Upon shipment from the manufacturing plant, the local
commercial power frequency is set to 49 Hz, and power
synchronization is set to asynchronization. Do not
change the following parameter.
Display Menu Path (AXW/AXW4A):
Device setup ► Detailed setup ► AUX calculation ► Power sync on/off
Device setup ► Detailed setup ► AUX calculation ► Set power freq
4.4.3 Grounding
WARNING
For the wiring of protective grounding, terminate the
cable finish with round shaped crimp terminal with
insulation cover (for M4 screw), and connect it to the
protective grounding terminal reliably.
CAUTION
The grounding should satisfy Class D requirements
(grounding resistance, 100 Ω or less).
IMPORTANT
A lightning protector is built-in for integral flowmeter
or AXW4A remote transmitter. When the lightning
protection is needed, the ground should satisfy Class C
requirements (grounding resistance, 10 Ω or less).
For AXFA11, read the applicable user’s manual as listed
in Table 1.1.
• The protective grounding terminals
are located on
the inside and outside of the terminal area.
Either terminal can be used.
• Use 600 V vinyl insulation wires as the grounding wires.
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Protective grounding terminals
Protective
grounding
terminals
Figure 4.4.3 Position of Protective Grounding Terminal