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TIC-LF620E 

2

 

DO1 and DO2 functions 

— One of the following 

functions can be assigned to DO1 and/or DO2  
• 

Pulse output (available only for DO1,DO2) 

Pulse rate: Max 10kHz (10,000pps) (DO1) 

                     Max 100Hz (     100pps) (DO2) 

(Over 1kpps, auto-setting) 

Pulse width: 0.3 to 500ms (but less than half of 
the period for 100% flow rate)  
Note: The same and simultaneous

 

 pulse is not 

available between DO1 and DO2.) 

• 

Multi-range selection outputs (Note 1) 

• 

High, High high, Low, and/or Low low alarm 

outputs (Note 2) 

• 

Empty pipe alarm output (Note 2) 

• 

Preset count output 

• 

Converter failure alarm output(Note 2) 

Note 1:

 Two outputs (DO1 and DO2) are needed for 

4-range switching and forward/reverse 
2-range switching. 

Note 2: 

Normal Open (default set) or Normal Close 

is selected for alarm outputs when 
programming. 
When power failure occurs, unit will be 
fault to Normal Open. 

Communications output 

 

HART(std.) 

Digital signal is superimposed on 4–20mAdc 
current signal as follows: 

• Conforms to HART protocol 

Load resistance: 240 to 750

 

Load capacitance: 0.25µF maximum 
Load inductance: 4mH maximum 

• 

PROFIBUS (opt.) 

Protocol : PROFIBUS-PA 
Baurate : 31.25kbps 
Bus voltage : 9-30VDC 

Consumption electric current of bus:less than 16mA 

Manufacture Ident-No. : 093B

HEX 

Standard Ident-No. : 9740

HEX

 

Slave address : 0-126 (Default address is 126) 
Profile : Profile Ver.3.01 for Process Control 

Devices 

Function blocks : AI(Flow)

×

1 , Totalizer

×

• Modbus(opt.) 

Physical layer : RS485 
Protocol : Modbus 
Mode : RTU 
Baudrate : 4800, 9600, 19200bps 
Data length : 8bit 
Parity bit : None, Odd, Even 
Stop bit : 1bit, 2bit 
Error check : CRC-16 
Max. station number : 32(with Master device) 
Max. cable length : 1.2km (Note) 

Note: This length is specification of 3 line  

connection.

 

LCD display: 

Full dot-matrix 128×128 dot LCD 

display (back-light provided) 
A parameter change will rotate the display. 

Parameter settings 

— Parameters can be set as 

follows:  

• IR Switches

: Three key switches are provided to 

  set configuration parameters. 

• Digital communication

: HART, PROFIBUS or 

Modbus is needed to set parameters. 

•Zero adjustment: 

Zero point adjustment can be 

started by pressing the switch in the converter. 

Damping: 

0.5 to 60 seconds (selectable in one 

second increments) 

Zero and span calibration: 

Built-in calibration 

signal source allows converter unit check. 

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 outputs and display will 
remain as follows when power fails.  

• Current output: 0mAdc 
• Digital output:  OFF 
• LCD display:  No display 
• PROFIBUS:  

No communication 

Power supply:

  

One of the following can be selected: 

• 100 to 240Vac, 50/60Hz  

(allowable voltage 80 to 264Vac) 
110Vdc 
 (allowable voltage 90 to 130Vdc) 

 
• 24Vdc (allowable voltage 18 to 36Vdc) 

Surge protection: 

Arresters are installed in the 

power supply, and a current signal output circuit. 

   

Structure:   

    IP 67 and NEMA 4X Watertight 

Case:

 Aluminum alloy (equivalent of IP 67)  

Coating: 

Acrylic resin-baked coating, pearl-gray 

colored 

Cable connection ports:

  

Cable glands 

 

LF620 and LF622 without cFMus Approval: 

Provided as standard 
OD of cable

φ

11~13mm 

Material Nylon 66  
G (PF) 1/2 male threads.. 

Note: When PROFIBUS or Modbus option is 

specified , cable gland size is 

φ

6

8mm for signal cable, 

φ

11

13mm 

for power cable 

LF620F and LF622F with cFMus Approval: 

Not provided, 1/2-14NPT male 
threads are required. 

Содержание LF620

Страница 1: ...d LF622 converters Input signals Analog signal the voltage signal from detector proportional to process flow rate For LF622 separate type converter Digital input DI Signal type 20 to 30Vdc voltage signal Input resistance 2 7k Number of inputs one point Note DI cannot be used with the Modbus communication DI function One of the following functions can be assigned to the optional DI signal Range swi...

Страница 2: ...evice Max cable length 1 2km Note Note This length is specification of 3 line connection LCD display Full dot matrix 128 128 dot LCD display back light provided A parameter change will rotate the display Parameter settings Parameters can be set as follows IR Switches Three key switches are provided to set configuration parameters Digital communication HART PROFIBUS or Modbus is needed to set param...

Страница 3: ...10 to 150Hz with acceleration of 9 8m s2 Vibration of 30Hz with 29 4 m s2 in 4h in each direction will not cause any defect to unit Note Avoid using the flowmeter in an environment with constant vibration Converter LF622 dimensions and weights See Figure 2 for Separate type MTBF 220 000 hours at 25 deg C 77 deg F based on MIL HDBK 217F ...

Страница 4: ... and LF622F Note Cable glands are not provided for LF622F cFMus approved type Refer to the part Cable connection port at detector LCD display Attachment I O cable ground Excitation cable ground Power supply cable ground Option cable ground Signal cable ground IR Switch Plate ...

Страница 5: ...th 100Ω or less ground resistance or Modbus Power switch External double pole power switch NOTE In thecase of the integral type the signal line A B G andthe excitation line E X Y are the connector joints Grounding with 100Ω or less ground resistance 1 Locate an external double pole power switch on the power line near the flowmeter within easy reach of operation Use the appropriate switch rating as...

Страница 6: ...lled steel conduit Power switch External double pole power switch Symbol Description Cable L1 Power supply Power cable L2 GND Ground for arrester FG Frame ground DI Digital Input 20 30Vdc I O cable DO1 Digital Output 1 DO2 Digital Output 2 COM Signal Common for DI DO1 DO2 Current Output 4 20mAdc or PROFIBUS Shielded cable for PROFIBUS PA X Excitation cable for LF622 LF622F only Y Excitation Output...

Страница 7: ...ion make sure to use a shielded cable to improve noise resistance Furthermore installation of signal cable in metal conduit is recommended 3 General cables are designed for indoor use where cables are not exposed to humidity rain etc When you install cables make sure to check the operating conditions such as the operating temperature range of the cable by contacting its manufacturer 4 When you car...

Страница 8: ...ote 1 When PROFIBUS communication is provided current output 4 20mA and HART communication cannot be used When Modbus communication is provided digital output points 1 DO1 and digital output points DO2 digital input point 1 DI HART communication cannot be used Refer Table 2 for more details Note2 Select 110Vdc for test report inspected under the condition of 110Vdc Table2 Communication functions a...

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