User’s
Manual
AXFA11G
Magnetic Flowmeter
Remote Converter
[Hardware Edition/Software Edition]
Manual Change No. 13-001-E
Please use the attached sheets for the pages listed below in IM 01E20C01-01E (7th).
Page and Item
Page 1-2
1.1 Using the Magnetic Flowmeter Safety
Page 1-3
1.2 Warranty
Added the warning notes in (1) installation, (3)
Operation, and (4) Maintenance.
Changed the page number.
Contents of Correction
1.3 Combination Remote Flowtubes
Page 4-1
4.1 Wiring Precautions
Page 4-2
4.2 Cables
Page 4-6
4.4.3 Precautions for Wiring of Power
Supply Cables
Page 4-8
Figure 4.4.9, 4 to 20 mA DC Output
Connection
Page 4-9
Figure 4.4.11, Active Pulse Output Con-
nection (Optional code EM)
Page 11-4
Withstand Voltage
Page 11-4
Changed the page number.
Added the important note on “wiring”.
Changed the page number.
Changed the numbers of “IEC” in warning note.
Changed the value of maximum load resistance.
Changed the figure.
Changed the values of the withstand voltage.
Safety Requirement Standards
Yokogawa Electric Corporation
Added the number of “EN” standard.
Aug. 19, 2013
1. INTRODUCTION
1.1 Using the Magnetic
Flowmeter Safely
(1) Installation
WARNING
•Installation of the magnetic flowmeter must be
performed by expert engineer or skilled personnel. No operator shall be permitted to perform
procedures relating to installation.
• The magnetic flowmeter must be installed
within the specification conditions.
• The magnetic flowmeter is a heavy instrument.
Be careful that no damage is caused to personnel through accidentally dropping it, or by
exerting excessive force on the magnetic
flowmeter. When moving the magnetic flowmeter, always use a trolley and have at least two
people carry it.
•When the magnetic flowmeter is processing hot
fluids, the instrument itself may become extremely hot. Take sufficient care not to get
burnt.
•Where the fluid being processed is a toxic
substance, avoid contact with the fluid and
avoid inhaling any residual gas, even after the
instrument has been taken off the piping line for
maintenance and so forth.
•Do not apply excessive weight, for example, a
person sttepping on the magnetic flowmeter.
•All procedures relating to installation must
comply with the electrical code of the country
where it is used.
(3) Operation
WARNING
•When opening the cover, wait for more than 10
minutes after turning off the power. Only
expert engineer or skilled personnel are permitted to open the cover.
• Do not open the cover in wet weather or humid
environment. When the cover is open, stated
enclosure protection is not applicable.
• Be sure to set parameters as "Protect" on the
write protect function after finish of parameter
setting work.
Under extremely rare case, the infra-red
switches may respond unexpectedly in such
conditions as sticking ball of water or
extraneous substances on the surface of
display panel glass according to the principle of
infra-red switch operation.
Its probability rises in such cases as sticking
rain water by storm or other similar situation
and washing up work near flowmeter installation place.
Either to illuminate or stop illuminating the infrared switches by the flashlight may cause the
mis-reaction.
Refer to Chapter 6 "Menu P: Parameter Protection Items" and section "10.2.3" how to use the
write protect function in detail.
(4) Maintenance
WARNING
(2) Wiring
WARNING
• The wiring of the magnetic flowmeter must be
performed by expert engineer or skilled personnel. No operator shall be permitted to perform
procedures relating to wiring.
• When connecting the wiring, check that the
supply voltage is within the range of the voltage
specified for this instrument before connecting
the power cable. In addition, check that no
voltage is applied to the power cable before
connecting the wiring.
• The protective grounding must be connected
securely at the terminal with the mark to
avoid danger to personnel.
• Maintenance of the magnetic flowmeter should
be performed by the trained personnel having
knowledge of safety standard. No operator
shall be permitted to perform any operations
relating to maintenance.
•When opening the cover, wait for more than 10
minutes after turning off the power.
• Do not open the cover in wet weather or humid
environment. When the cover is open, stated
enclosure protection is not applicable.
•Always conform to maintenance procedures
outlined in this manual. If necessary, contact
Yokogawa.
• Care should be taken to prevent the build up of
dirt, dust or other substances on the display
panel glass or data plate. If these surfaces do
get dirty, wipe them clean with a soft dry cloth.
1-2
IM 01E20C01-01E
1. INTRODUCTION
1.2 Warranty
• The terms of this instrument that are guaranteed are
described in the quotation. We will make any repairs
that may become necessary during the guaranteed
term free of charge.
•Please contact our sales office if this instrument
requires repair.
• If the instrument is faulty, contact us with concrete
details about the problem and the length of time it
has been faulty, and state the model and serial
number. We would appreciate the inclusion of
drawings or additional information.
• The results of our examination will determine
whether the meter will be repaired free of charge or
on an at-cost basis.
䊏 The guarantee will not apply in the following
cases:
• Damage due to negligence or insufficient maintenance on the part of the customer.
• Problems or damage resulting from handling,
operation or storage that violates the intended use
and specifications.
• Problems that result from using or performing
maintenance on the instrument in a location that
does not comply with the installation location
specified by Yokogawa.
• Problems or damage resulting from repairs or
modifications not performed by Yokogawa or
someone authorized by Yokogawa.
• Problems or damage resulting from inappropriate
reinstallation after delivery.
•Problems or damage resulting from disasters such as
fires, earthquakes, storms, floods, or lightning strikes
and external causes.
1.3 Combination Remote
Flowtubes
IMPORTANT
•The AXFA11 Magnetic Flowmeter Converter
should be used in combination with the following remote flowtubes:
AXFA11G ⇔AXF002ⵧ-N to AXF26Lⵧ-N
Contact Yokogawa before using it in combination with flowtubes other than those listed
above.
• The model AXFⵧⵧⵧC remote flowtube with
optional code JF3 (TIIS flame proof type)
cannot be combined with the AXFA11 converter. In this case, use the AXFA14 converter.
• If the converter combined with the AXF magnetic flowmeter remote flowtube is changed
from the AXFA11 to AXFA14 or vice versa, the
meter factor of the remote flowtube must be
readjusted according to its flow calibration.
CAUTION
In case of combination with the explosion proof
type remote flowtube (AXFⵧⵧⵧC-N) for
ATEX, FM, and CSA certification, please see the
manual IM 01E20D01-01E. The construction of
the instrument, installation, external wiring,
maintenance, and repair are strictly restricted,
and non-observance or negligence of these
restriction would result dangerous condition.
䊏 Trademarks:
ADMAG, AXF and ADMAG AXF are registered
trademarks of Yokogawa Electric Corporation.
Company names and product names used in this
material are registered trademarks or trademarks of
their respective owners.
1-3
IM 01E20C01-01E
4. WIRING
4. WIRING
This section describes the wiring on the converter side
only. For information relating to wiring on the
flowtube side, refer to the user’s manual of the AXF
Remote Flowtube (IM 01E20D01-01E).
WARNING
The wiring of the magnetic flowmeter must be
performed by expert engineer or skilled personnel. No operator shall be permitted to perform
procedures relating to wiring.
CAUTION
Once all wiring is complete, check the connections before applying power to the instrument.
Improper arrangements or wiring may cause a
unit malfunction or damage.
4.1 Wiring Precautions
four-core cables are used for wiring. Keep
conduits or flexible tubes watertight using
sealing tape.
• Ground the remote flowtube and the converter
separately.
• Cover each shield of the signal cable with vinyl
tube or vinyl tape to avoid contact between two
shields or between a shield and a case.
• When waterproof glands or union equipped
waterproof glands are used, avoid tightening
the glands with an excessive torque.
• Be sure to turn power off before opening the
cover.
• Before turning the power on, tighten the cover
securely.
IMPORTANT
Prepare the signal cable and the excitation cable
almost the same length. It is recommended to
lay them together closely.
Be sure to observe the following precautions when
wiring:
CAUTION
• In cases where the ambient temperature
exceeds 50°C (122°F), use external heatresistant wiring with a maximum allowable
temperature of 70°C (158°F) or above.
• Do not connect cables outdoors in wet weather
in order to prevent damage from condensation
and to protect the insulation.
• Do not splice the cable between the flowtube
terminal and the converter if it is too short.
Replace the short cable with a cable that is the
appropriate length.
• All the cable ends must be provided with round
crimp-on terminals and be securely wired.
• The signal cables must be routed in separate
steel conduit tubes 16 (JIS C 8305) or flexible
conduit tubes 15 (JIS C 8309).
• Always route the power and output signal
cables in separate steel conduit tubes, except
when the power supply voltage is 24 V and
4.2 Cables
(1) Dedicated Signal Cable (AXFC)
Conductors (A and B)
Shields (SA and SB)
Tape
Outer jacket
Shield (C)
Insulation
Insulation
Figure 4.2.1 Dedicated Signal Cable AXFC
The flow signal is transmitted via this dedicated cable.
The cable is constructed with double shielding over the
two conductors, and heat-resistant vinyl is used for the
outer jacket material.
Finished diameter: 10.5 mm (0.413")
Maximum length: 200 m (660 ft)
Maximum temperature: 80°C (176°F)
10.5 (0.413")
F0401.EPS
4-1
IM 01E20C01-01E
4. WIRING
IMPORTANT
If the cable is longer than required, cut off any
extra length rather than coiling it up, and terminate the conductors as shown in Figure 4.2.2.
Avoid using junction terminal boards to extend
the cable length, as this will interrupt the shielding.
Unit : mm
(approx. inch)
ACB
SA
On the
converter
side
25 (0.98)
50 (1.97)
White Black
⫾5
8(0.3) max.
(5.9)
150
20 (0.8)
SB
Red
L (Specified Dimensions)
60 (2.36)
70 (2.76)
AXFC
Figure 4.2.2 Treatment of Dedicated Signal Cables
CAUTION
ACB
90 (3.54)
White Black Red
8 (0.3) max.
⫾5
On the
(5.9)
150
flowtube
side
10.5 (0.4)
55 (2.17)
F0402.EPS
90 (3.54)
(2) Excitation Cable/Power Cable/Output
Cable
JIS C3401 control cable equivalent
JIS C3312 power cable equivalent
14 AWG Belden 8720 equivalent
Outer Diameter:
With no gland option;
6.5 to 12 mm (0.26 to 0.47 in.)
With gland options EG, EU and EW;
• Excitation cable;
10.5 or 11.5 mm (0.41 or 0.45 in.)
• Power and output cable;
7.5 to 12 mm (0.30 to 0.47 in.)
With gland options EP;
6 to 12 mm (0.24 to 0.47 in.)
Nominal Cross Section:
Single wire; 0.5 to 2.5 mm
Stranded wire; 0.5 to 1.5 mm
2
2
In case of power cable, Green/Yellow covered conductor shall be used only for connection to PROTECTIVE
CONDUCTOR TERMINALS. Conform to IEC227,
IEC245 or equivalent national authorization.
Unit : mm
(approx. inch)
Crimp Terminal
EX2
EX1
85 (3.35)
85 (3.35)
EX1
EX2
• As crimp terminals A, B, SA, SB and C have
their own electrical potentials, securely insulate
them so as not to come in contact with one
another.
• To prevent a shield from coming in contact with
another shield or the case, cover each shield
with a vinyl tube or wrap it in vinyl tape.
NOTE
Conductors A and B carry the signal from the
electrodes, and C is at the potential of the liquid
(signal common). Shields SA and SB are kept
at the same potentials as the individual electrodes (these are actively driven shields.) This is
done to reduce the effect of the distributed
capacitance of the cable at long cable length.
Note that, since the signals from the individual
electrodes are impedance converted inside the
converter, errors will result if they come in
contact with any other component. Great care
must be taken in the cable end treatment.
On the converter side
On the flowtube side
F0403.EPS
Figure 4.2.3 End Treatment of Excitation Cable
NOTE
• For excitation and power cables, always use a
crimp terminal with an insulation cover.
• Use crimp tools from the manufacturer of the
crimp terminal you want to use to connect the
crimp terminal and cable.
• Use crimp tools that are appropriate for the
diameter of the cable to be connected.
4-2
IM 01E20C01-01E
4. WIRING
IMPORTANT
Do not wire the terminal without terminal symbols in terminal layout labels.
4.4.3 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 protective grounding wiring.
• To prevent electric shocks, ensure the electrical
wiring cover (transparent) is attached.
• Install an external switch or circuit breaker as a
means to turn the powe off (capacitance; 15A,
conforming to IEC60947-1 and IEC60947-3).
Locate this switch either near the instrument or
in other places facilitating easy operation. Affix
a “Power Off Equipment” label to this external
switch or circuit breaker.
4.4.4 DC Power Connection
When using DC power as the power supply for the
converter, give attention to the following points.
(1) Connecting Power Supply
IMPORTANT
Do not connect power supply with reversed
polarities.
L/+ terminal: connect +
N/– terminal: connect
IMPORTANT
Do not connect power supply with 100 to 240 V
AC or 100 to 120 V DC in the case of a 24 V
power supply version (power supply code 2).
It will give a damage to the converter.
(2) Required Power Supply Voltages
IMPORTANT
When using a 24 V power supply, the specification for the supply voltage is 24 V (–15% to
+20%), but the input voltage of the converter
drops due to cable resistance therefore it must
be used within the following ranges.
Supply Voltage and Cable Length
–
Wiring Procedure
1. Turn the instrument's power off, and remove the
wiring cover (transparent).
2. Wire the power supply cable and the functional
grounding cable to the power supply terminals.
CUR OUT STATUS OUT ALARM OUT SIGNAL
Functional
grounding cable
Figure 4.4.3 Electric Cable Wiring
POWER SUPPLY EXCITER
P–P+
PULSE OUT STATUS IN
Powe r supply cable
SBBASACAL–AL+COMSO2+SO1+I+ I–
COMSI2+SI1+EX2EX1L/+N/–
F0411.EPS
3. Reattach the electrical wiring cover (transparent).
420 (1380)
280 ( 920)
200 ( 660)
100 ( 330)
Allowable cable length m(ft)
0
20.4 22 24 26 28.8
Usable range E (V)
Cable cross section area: 1.25 mm
Cable cross section area: 2 mm
(3) Setting Power Supply Frequency
IMPORTANT
Set the local commercial power frequency in
order to eliminate the effect of induction noise
from the commercial power supply.
Refer to “Chapter 6: Parameter Description” in
this manual. Parameter No. J30 and J31.
4-6
2
2
F0411-2.EPS
IM 01E20C01-01E
4. WIRING
In case of explosion proof type for ATEX, FM, and
CSA certification, connect wiring as shown in the
figure below.
In case of the explosion proof type, the protective
grounding of remote flowtube must be connected to
a suitable IS grounding system. In that case,
(functional grounding terminal) need not be connected.
I+ I–
CURRENT OUT
N/– L/+
POWER SUPPLY
A
B
C
Figure 4.4.6 Wiring Diagram
AL+ AL– C SA A B SB
SO1+ COMSO2+
ALARM OUT
STATUS OUT
EX2EX1
P– SI1+ SI2+ COMP+
EXCIT ATION
PULSE OUT STATUS IN
Excitation cable
Remote flowtube
EX2
EX1
SIGNAL
AXFA11 Converter
AXFC Dedicated signal
cable
Converter
SA
A
B
SB
C
EX1
EX2
* Individually tape and insulate the
shields corresponding to SA and
SB on the remote flowtube side.
Remote
flowtube
Taping*
A
B
Taping*
C
EX1
EX2
F0416.EPS
(4) Connection with the Remote Flowtube
(General-Purpose Use, Submersible Type,
Size 1100 to 2600 mm (44 to 104 in.))
Connect wiring as shown in the figure below.
I+
Shortbar
CURRENT OUT
4-20mA out
N/– L/+
POWER SUPPLY
I–
AL+ AL– C SA A B SB
SO1+ COMSO2+
ALARM OUT
STATUS OUT
EX2EX1
EXCIT ATION
PULSE OUT STATUS IN
SIGNAL
AXFA11 converter
P– SI1+ SI2+ COMP+
AXFC dedicated
signal cable
Excitation
cable
A
EX2
B
C
EX1
Converter
SA
A
B
SB
C
EX1
EX2
* Individually tape and insulate
the shields corresponding to SA
and SB on the remote flowtube
side.
Remote flowtube
Remote
flowtube
Taping*
A
B
Taping*
C
EX1
EX2
F040218.EPS
Figure 4.4.8 Wiring Diagram
4.4.7 Connecting to External Instruments
(3) Connection with the Remote Flowtube
(General-Purpose Use, Submersible Type,
Size 500 to 1000 mm (20 to 40 in.))
Connect wiring as shown in the figure below.
SO1+ COMSO2+
I+
I–
CURRENT OUT
4-20mA out
N/– L/+
POWER SUPPLY
Shortbar
A
B
C
Figure 4.4.7 Wiring Diagram
AL+ AL– C SA A B SB
STATUS OUT
ALARM OUT
EX2EX1
P– SI1+ SI2+ COMP+
EXCIT ATION
PULSE OUT STATUS IN
Excitation
cable
EX2
EX1
Remote flowtube
SIGNAL
AXFA11 converter
AXFC dedicated
signal cable
Converter
SA
A
B
SB
C
EX1
EX2
* Individually tape and insulate
the shields corresponding to SA
and SB on the remote flowtube
side.
Remote
flowtube
Taping*
Taping*
EX1
EX2
F040217.EPS
WARNING
Before wiring with external instrument, be sure to
turn off the power supply for AXFA11 converter
and any external instruments.
Connect the AXFA11 terminal to external instruments,
giving attention to the following points.
䊉 4 to 20 mA DC Current Output
A
B
C
AXFA11
Figure 4.4.9 4 to 20 mA DC Output Connection
l+
Receiver
l-
Instrument
Resistive Load Max. 1 kΩ.
Communication
BRAIN
HART
Resistive load
250 to 450
250 to 600
Ω
Ω
F0417.EPS
4-8
IM 01E20C01-01E
4. WIRING
䊉 Pulse Output
IMPORTANT
• As this is a transistor contact (insulated type),
give attention to proper 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.
• When input filter constant of the electronic
counter is large in relation to the pulse width,
the signal will decrease and the count will not
be accurate.
• If the input impedance of the electronic counter
is large, an induction noise from the power
supply may result in inaccurate counts. Use a
shield cable or sufficiently reduce the input
impedance of the electronic counter within the
electromagnetic flowmeter pulse output specification range.
• The active pulse output (Optional Code EM)
cannot be used in conjunction with the standard
pulse output.
• When the active pulse output (Optional Code
EM) is selected, do not be short-circuit between
the P+ and P– terminals to avoid damaging the
instrument.
• When the active pulse output (Optional code
EM) is selected, the range of pulse rate must
be set to 2 pps maximum.
• To avoid communication (BRAIN/ HART)
failure, it is recommended to use the shield
cable.
AXFA11
PULSE OUT
AXFA11
PULSE OUT
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
Figure 4.4.11 Active Pulse Output Connection
P+
P-
P+
P-
(Optional code EM)
Load
Protective diode
Mechanical Counter
Electronic Counter
F0419.EPS
䊉 Status Input
IMPORTANT
Status inputs are designed for use with novoltage (dry) contacts. Be careful not to connect
the status to any signal source carrying voltage.
Applying voltage may damage the input circuit.
Closed: Less than 200 Ω
Open: More than 100 kΩ
+
SI1
+
SI2
AXFA11
AXFA11
PULSE OUT
AXFA11
PULSE OUT
Figure 4.4.10 Pulse Output Connection
P+
P-
P+
P-
Load
30V DC, 0.2A. max
Protective diode
Mechanical Counter
Electronic Counter
F0418.EPS
COM
No-voltage status input
Figure 4.4.12 Status Input Connection
4-9
F0420.EPS
IM 01E20C01-01E
11. OUTLINE
High grade Accuracy
Size 2200 mm (88 in.) to 2600 mm (104 in.)
% of Rate
2.4
2.0
1.6
High grade Accuracy
Pulse
1.2
Output
Accuracy
0.85
0.8
0.4
0
012 6810
Current Output:
Pulse output accuracy plus ⫾0.05% of Span
Standard Accuracy
V[m/s]
F16-3.EPS
Repeatability:
⫾0.1% of Rate (V ⭌ 1 m/s (3.3 ft/s))
⫾0.05% of Rate ⫾0.5 mm/s (V < 1 m/s (3.3 ft/s))
Maximum Power Consumption:
Combined with AXF Remote Flowtube: 20 W
Insulation Resistance(*1) :
Between power supply terminals and ground
terminal: 100MΩ at 500V DC
Between power supply terminals and input/output/
excitation current terminals : 100MΩ at 500V DC
Between ground terminal and input/output/excitation
current terminals: 20MΩ at 100V DC
Between input/output/excitation current terminal: 20MΩ
at 100V DC
Withstand Voltage(*1) :
Between power supply terminals and ground terminal:
1400V AC for 2 seconds
Between power supply terminals and input/output
terminals: 1400V AC for 2 seconds
Between excitation current terminal and ground
terminal: 160V AC for 2 seconds
Between excitation current terminal and input /output
terminals: 350V AC for 2 seconds
CAUTION
*1: When performing the Insulation Resistance Test or the
Withstand Voltage Test, please obey the following
caution.
• Following the relevant test, wait for more than 10
seconds after the power supply has been turned off
before removing the cover.
• Remove all wires from terminals before testing.
• When the power terminal has a lighting protector
(optional code A), remove the short bar at the ground
terminal.
• After testing, be sure to discharge by using a resistance
and return all wires and the short bar to its correct
position.
• Screws must be tightened to a torque of 1.18 N-m or
more.
• After closing the cover, the power supply can be
restored.
• Installation category based on IEC1010:
Overvoltage category II (“II” applies to electrical equipment which is supplied from a fixed installation-like
distribution board.)
• Pollution degree based on IEC1010
Pollution degree 2 (“Pollution degree” describes the
degree to which a solid, liquid, or gas which deteriorates
dielectric strength or surface resistivity is adhering. “2”
applies to a normal indoor atmosphere.)
EMC Conformity Standards:
,
EN61326-1 Class A, Table 2 (For use in industrial locations)
EN61326-2-3
EN61000-3-2 ClassA
EN61000-3-3
CAUTION
This instrument is a Class A product, and it is
designed for use in the industrial environment.
Please use this instrument in the industrial
environment only.
■ NORMAL OPERATING CONDITIONS
Ambient Temperature: –40°C to +60°C (–40°F to +140°F)
Indicator’s operating range: –20°C to +60°C (–4°F to +140°F)
Ambient Humidity: 0 to 100%
Lengthy continuous operation at 95% or more is not
recommended.
Power Supply:
Power supply code 1:
• AC specifications
Rated power supply: 100 to 240 V AC, 50/60 Hz
(Operating voltage range: 80 to 264 V AC)
• DC specifications
Rated power supply: 100 to 120 V DC
(Operating voltage range: 90 to 130 V DC)
Power supply code 2:
• AC specifications
Rated power supply: 24 V AC, 50/60 Hz
(Operating voltage range: 20.4 to 28.8 V AC)
• DC specifications
Rated power supply: 24 V DC
(Operating voltage range: 20.4 to 28.8 V DC)
Supply Voltage and
Cable Length for Power Supply Code 2
420 (1380)
280 ( 920)
200 ( 660)
Safety Requirement Standards:
EN61010-1
EN61010-2-030
• Altitude at installation site: Max. 2000 m above sea level
11-4
100 ( 330)
Allowable cable length m(ft)
0
20.4 22 24 26 28.8
Usable range E (V)
Cable cross section area: 1.25 mm
Cable cross section area: 2 mm
2
2
F00.EPS
IM 01E20C01-01E
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