Toshiba Network Card TIC LF232A User Manual

Field Intelligent Device Series  
Electromagnetic Flowmeter Converter  
LF232  
Introduction  
The electromagnetic flowmeter uses Faraday’s Law of  
electromagnetic induction to measure the process flow.  
The device consists of two units: a detector, through  
which the fluid to be measured flows and in which  
low-level signals proportional to flow rates are  
obtained; and a converter, which supplies excitation  
current to the detector, and amplifies the signals from  
the detector and then processes and converts the  
signals into the 4–20 mA dc current signal.  
The LF232 offers various outputs such as totalization  
output and multi-range selection outputs. With it  
patented Noise-Sentry original noise-suppression  
circuit and advanced algorithms. The LF232 is highly  
resistant to noise and provides a stable output even  
when measuring fluids contain slurries. TheLF232 can  
be used with a separately mounted detector such as the  
LF150 or LF470. The LF232 can also be used with  
conventional models of detectors.  
Figure 1. LF232 Converter  
Accuracy: the accuracy is dependent on the type of  
detector combined with the LF232. See the following  
tables for accuracy when combined with specified  
detectors.  
The AF900 hand-held terminal (HART*1  
communicator) can be used to communicate with the  
flowmeter from a remote place. See the  
Communications signal specification for details about  
HART protocol.  
*1: HART protocol (Highway Addressable Remote  
Transducer) is a communication protocol for industrial  
sensors recommended by the HCF (HART  
Communication Foundation).  
Detector combined  
LF470 (Meter size 1/10", 1/6”, 1/4" (2.5 to 6 mm))  
Flow rate as a  
percent of range  
050%  
Accuracy  
0.3–1.0m/s  
1.0–10m/s  
±0.8FS  
±0.4FS  
50100%  
±0.8FS ±0.8of rate  
Specifications  
Detector combined  
Overall Specifications  
LF150 (Meter size 28” to 120” (700 to 3000 mm))  
Accuracy: ±0.5 % of Rate*  
Measurement range in terms of flow velocity:  
* This pulse output error result is established under  
standard operating conditions at Toshiba’s flow  
calibration facility, Fuchu Japan.  
* Individual meter’s measurement error may vary up  
to ± 0.8 % of Rate at 3.28 ft/s (1.0 m/s) or more and  
± 0.4% of Rate ±0.157 inch/s (4mm/s) at 3.28 ft/s  
(1.0 m/s) or less.  
* Current output: plus ± 8µA (0.05% of span).  
* Refer to individual calibration data for each  
individual meter’s measurement error.  
Conbination LF150, LF470  
0 –1.0 ft/s to 0 – 32.8 ft/s (0 – 0.3 m/s to 0 –10 m/s)  
Fluid conductivity: 5µS/cm or more  
Ambient temperature: -4 to 140 °F (-20 to 60 °C)  
(Storage temperature: -13 to 149 °F (-25 to 65 °C))  
Structure: IP67 and NEMA 4X Watertight  
TIC-LF232A  
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TIC-LF232A  
Surge protection: Surge protectors are installed in the  
power supply, excitation circuit, current signal  
output and digital I/O circuit.  
Communications signal:  
A digital communications (HART protocol) signal is  
superimposed on 4 to 20 mA dc analog output  
signal.  
Terminal block structure: 21-pole, screw connection  
type (M4 screw)  
Load resistance: 240 to 1 kΩ  
Load capacitance: 0.25 µF or less  
Housing: Aluminum alloy  
Load inductance: 4mH or less  
Coating: Acrylic resin-baked coating, pearl-gray  
colored  
(For maximum cable length, about 2km is a  
guideline length when CVV-S 1.25mm2 is used  
under standard installation condition.)  
Cable connection ports :  
A cable gland is provided for each port.  
OD of cable φ11 to 13 mm  
Material Nylon 66  
Note: HART(Highway Addressable Remote  
Trans-ducer) is a communications protocol for  
industrial sensors recommended by the HCF (HART  
Commu-nication Foundation).  
G (PF) 1/2 male screws.  
Vibration resistance:  
No resonance to the following levels of vibration:  
• 10 to 55Hz with amplitude of 0.07mm  
• Vibration of 30Hz with 29.4 m/s2 in 4h in each  
direction will not cause any defect to unit.  
Output display:  
16-character×2-line dot-matrix LCD  
(With back light).  
2 units can be selected from the flowing units: flow  
velocity, instantaneous flow rate, total flow  
(forward/reverse/difference flow), total count, %,  
custom unit.  
Note: If the flowmeter is intended to be used in a  
location where vibration is applied  
constantly contact Toshiba.  
Dimension and Weights:  
Parameter settings—Parameters can be set as follows  
IR Switches: Various parameters can be set without  
opening the converter housing using 4 infrared  
switches (password can be set)  
See Figure 2  
•Zero adjustment: Zero point adjustment can be  
started by pressing the switch in the converter.  
Digital communication: The AF 900 hand-held  
terminal is needed to set parameters.  
Damping: 0.5 to 60 s (selectable in 1s increments)  
“Field re-verification” Mag-Prover – Toshiba’s  
Zero span calibration tool allows unit to be  
re-calibrated and verified using internal software  
program. (For more information contact Toshiba  
International Corp.)  
Conditions when power fails:  
Parameter setting values are stored in non-volatile  
memory and the values will be restored when the  
power returns to normal condition. The output and  
display will stay as follows when power fails.  
Current output: 0 mA  
Digital output: OFF (contact open)  
LCD display : No display  
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TIC-LF232A  
Installation  
Dimensions  
9.33 (237)  
Installation method  
4-φ12 hole  
Installed by panel or pipe  
8.74 (222)  
2.91 (74)  
6.10 (155)  
Appointedboutandnutfor  
installationisattached.
In the case of 2B pipe installation  
M10 U bolts  
2Bpipe
Signal cable ground  
Output cable ground  
Power supply cable ground  
In the case of panel installation  
11 to 12 φhole  
2.91 (74)  
4 places  
Grounding terminal  
2.99 (76)  
I/O cable ground  
2.99 (76)  
2.99 (76)  
Weight : Approximately18 lb (8 kg)  
(including a mounting bracket)  
Excitation cable ground  
Figure 2. Separate type converter LF232  
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TIC-LF232A  
External Connections  
Terminal box  
Power supply  
(CVV)  
wire  
5.5mm2 or more  
Power supply  
Grounded with 100or  
less ground resistance  
Current output (4 to 20mA)  
Digital input 2 (opt.)  
Thick walled steel conduit  
Digital input 1 (opt.)  
(20 to 30 Vdc)  
Digital output 4 (opt.)  
Digital output 3 (opt.)  
Digital output 2 (opt.)  
Detector  
Signal cable  
(2-wire shielded hard-rubber sheathed cable)  
Digital output  
Grounded with 100or  
less ground resistance  
Excitation cable  
(3-wire hard-rubber sheathed cable)  
Output cable  
(CVV-S)  
Digital I/O cable  
(CVV-S)  
Figure 3. External Wiring Diagram  
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Wiring Precautions  
About establishment environment  
Do not store or install the flowmeter:  
• Where there is direct sunlight.  
• Where excessive vibration or mechanical shock  
occurs.  
(1)Be sure to use thick walled steel conduit (22mm)  
for signal and excitation cable wiring between the  
detector and converter. Use flexible conduit at the  
cable outlets of the detector and converter.  
(2) Connect the grounding wire (IV wire 5.5mm² or  
more) to a good earth ground (100or less ground  
resistance). Make the wire as short as possible. Do  
not use a common ground shared with other  
equipment where earth current may flow. An  
independent earth ground is recommended.  
(3) The allowable cable lengths between the detector  
and converter for the separate type flowmeter  
depend on the electrical conductivity of the object  
fluid. See Figure 4 below.  
• Where high temperature or high humidity  
conditions exist.  
• Places where corrosive atmospheres exist.  
• Places submerged under water.  
• Place where there is sloped floor. To put the  
flowmeter temporarily on the floor, place it  
carefully with something, such as stopper, to  
support it so that the flowmeter will not topple over.  
In areas like the following, there may be the case that  
infrared switches do not function correctly. (If these  
are unavoidable, use an appropriate cover.)  
(1) Where unit (operation panel) is exposed to direct  
sunlight, reflection of light onto window pane and  
diffused light reflection.  
(4) Digital output 1, digital output 2 to 4 , digital output  
1 to 2 are insulated mutually.  
(2) Where smoke and steam may occur.  
(3) Where exposed to direct snow, ice or mud.  
300  
200  
100  
ー  
ル許容  
50  
30  
20  
Ordering Information  
1. When ordering the LF232 converter, refer to  
Tables 1 (Type Specification Code).  
An entry must be made for each of the columns in  
each of these tables.  
10  
5
3
2. Measuring range  
3. I/O function specifications.  
4. Ordering scope:  
Actual flow calibration data: (required or not)  
5. Specification of combined detector  
6. Other scope:  
3
5
10 20 30 50 100 200  
Conductivity (µS/cm)  
(1)When combined with LF150.  
Specification other than standard items.  
(2)When combined with LF470.  
Figure 4. Electrical Conductivity and Cable length  
Consult a Toshiba representative before ordering.  
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TIC-LF232A  
Table 1. Specification Code for converters (LF232)  
Model  
Specification Code  
Contents  
1
L
2
3
2
4
5
2
6
7
8
9 10 11 12 13 14  
F
3
Separate type converter  
Purpose  
Standard  
A
Compatible detectors (Note1,2,3)  
Medium to small-size detectors:  
Meter size 1/10” to 18” (2.5 to 450 mm)  
Large-size detectors:  
A
B
Meter size 28” to 120” (700 to 3000 mm)  
Mounting nuts and bolts  
C
E
Panel, wall mounting (BNP material : SUS304)  
Pipe mounting (BNP material : SUS304)  
Digital input/output  
1
3
Current output  
+ Digital output points (1 point)  
Current output  
+ Digital output points (4 points) + Digital input points (2 points)  
Communication function  
HART communication  
1
Power supply  
100Vac-240Vac, 50/60Hz (Note 2)  
24Vdc (Note 3)  
1
2
A
Standard  
Note 1: For applicable detector code, select one from the following table.  
To combine with an existing detector, select one depending on the type of replaceable converters.  
For combination with detectors not listed below, contact Toshiba.  
Applicable  
detector code  
Applicable  
detector  
Applicable detector  
(discontinued model)  
Replaceable converters  
334,  
372, LF200, LF220, LF420,  
A
B
LF470 type  
LF150 type  
335 type (Converters of LF230* A type  
types shown right)  
337,  
373, 378, LF230* B type  
335 type (Converters of  
types shown right)  
Note 2: When the 7th digit is “B” and power supply specification code is “1”, power supply specification is 100 to  
120VAC.  
Note 3: 24VDC can be specified only when the 7th digit is “A”.  
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TIC-LF232  
Specifications are subject to change without notice.  
Printed in Japan 2008-5 (TDOC)  
© TOSHIBA Corporation 2008  
All Rights Reserved.  
ISO9001 and ISO14001 are certified.  
Misuse of this product can result in damages to property or human injury.  
Read related manuals carefully before using this product.  
TIC-LF232A  
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