YOKOGAWA AXFA14G User Manual

<4. Wiring>
34
IM 01E20A01-01EN
NOTE
For pulse output from the DO terminals, parameters
mustbeset.Referto“ParameterDescription”in
the user’s manual of the AXF Integral Flowmeter
[Software Edition] (IM 01E20C02- 01E).
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Mechanical Counter
Electronic Counter
Load
Protective diode
30V DC, 0.2A. max
PULSE OUT
PULSE OUT
AXF integral flowmeter
AXF integral flowmeter
DO+
DO-
DO+
DO-
Figure 4.1.12 Pulse Output Connection
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Protective diode
PULSE OUT
AXF integral flowmeter
AXF integral flowmeter
DO+
DO-
DO+
DO-
Output voltage: 24 V DC ±20%
Current: 150 mA or less
Pulse rate: 0.0001 to 2 pps
Pulse width: 20, 33, 50, 100 ms
Mechanical Counter
Electronic Counter
Load
PULSE OUT
Figure 4.1.13 Active Pulse Output Connection
(Optional code EM)
 Status Input
IMPORTANT
Status inputs are designed for use with no-voltage
(dry) contacts. Be careful not to connect the status to
any signal source carrying voltage.
Applying voltage may damage the input circuit.
AXF integral flowmeter
DIO+
DIO
-
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No-voltage status input
Closed: Less than 200 Ω
Open: More than 100 kΩ
Figure 4.1.14 Status Input Connection
NOTE
For status input to the DIO terminals, parameters must
beset.Referto“ParameterDescription”intheuser’s
manual of the AXF Integral Flowmeter
[Software Edition] (IM 01E20C02-01E).
 Status Output / Alarm Output
IMPORTANT
Since this is an isolated transistor output, be careful
of voltage and polarity when wiring. Do not apply a
voltage larger than 30V DC or a current larger than
0.2A in order to prevent damage to the instrument.
This output cannot switch an AC load. To switch an AC
load, an intermediate relay must be inserted as shown
in Figure 4.1.15.
* The alarm output operates from open (normal) to closed
(alarm occurrence) by factory default setting. Changes
can be made via the parameter settings.
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Load
Protective diode
External power supply
30V DC, 0.2A. max
AXF integral flowmeter
AXF integral flowmeter
This connection is not possible.
DO+ (or DIO+)
DO
- (or DIO - )
DO+ (or DIO+)
DO
- (or DIO - )
Electromagnetic
valve
AC power supply
Relay
Figure 4.1.15 Status Output / Alarm Output Connection
NOTE
For status and alarm outputs from the DO or DIO
terminals, parameters must be set. Refer to
“ParameterDescription”intheuser’smanualofthe
AXF Integral Flowmeter
[Software Edition] (IM 01E20C02-01E).
(7) Installing the Cover
Installthecovertotheowmeterbyturningitinthe
direction of the arrow as shown below. Tighten cover
locking screw 2 counterclockwise using a hexagonal
wrench (nominal size 3) to lock the cover.
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Cover locking screws
1
2
Figure 4.1.16 Installing the Terminal Box Cover for Integral
Flowmeter

YOKOGAWA AXFA14G Specifications

General

Brand	YOKOGAWA
Model	AXFA14G
Category	Measuring Instruments
Language	English