GM8802F称重变送器使用说明书(英文)

GM880

GM8802F INSTRUCTION MANUAL

G.M.

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Catalogue

1.Summary _______________________________________________2

1.1Function and characteristic _____________________________2

1.2Exterior interface explanation __________________________2

1.3The internal structure and explanation __________________3

1.4Technical specification ________________________________3

2.Installation ______________________________________________5

2.1General principle _____________________________________5

2.2Connection of the load cell _____________________________5

2.3Connection of the analog quantity output _______________6

2.4Connection of the serial interface _______________________6

3.Data input ______________________________________________8

4.C alibration ____________________________________________9

4.1Method of calibration _________________________________9

4.2Calibration parameter form ____________________________12

5.The Working parameter setting up ____________________13

5.1Method of the working parameter setting up _____________13

5.2Explanation of the working parameter __________________13

6.The working process and the function ________________15

7.Serial port _____________________________________________16

7.1Serial modes _________________________________________16

7.2Data modes _________________________________________16

8．The normal question _________________________________28

9.Size of the instrument __________________________________29

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5-121.Summary

GM8802F weighing transmitter is a special instrument that is aimed at

weight showing and controlling in industry control.

The instrument has the specification of high resolution,steady property and handy operation.Suitable for weighing system such as concrete mixer,bitumen mixture equipments,equipments of converter or blast furnace burden.

1.1Function and characteristic

?The volume is small and exquisite ,handsome in appearance ,

convenient to be suitable .

?

Suitable for all resistance-bridge load cells.?

Board-characteristic adjusting,and working parameter setting.?

Function that multiple figure strains waves.?

Have function of automatic zero follow.?

Have function of automatic zero clearing when power ?Two-way isolated serial interface functions,have RS232/RS485,

convenient and going to the communication of the location machine.

?

Function that adjust the instrument from serial interface.1.2Front board explan explanation

ation GM8802F Front board

Mainly show:Six bits,used for showing the data of weight or the value of

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analog quantity output and the data of instrument relevant

information.

Indicator lamp of the state:

?ZER ZERO

O :Indicator lamp of zero location ，When the weight of the supplies is 0±1/4d,this indicator lamp is on.

?STA STAB

B :Indicator lamp which the weight is stable ，When the weight changing is in the judge steady range,this indicator lamp is on.

Keyboard:

Uses in zero clearing and the data showing ,and uses in to draw back

the present state of the instrument.

Uses in the parameter items choice.

Uses in the functions of the parameter setting up choice.

Uses in entering calibration or parameter setting up or confirming

the present function.

1.3Rear board explan explanation

ation GM8802F Rear board

1,The power input 2,Serial port output 3,Interface of the load cell

1.4Technical specification

1.4.1General specification

Power :AC220V ±10%50Hz

The power wave filters:inside

Enclose working temperature:-10-40℃

The largest humidity:90%R.H can't be formed and revealed

Consumption:about 10W

Physics measurement:98(W)*151(D)*49(H)mm

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5-141.4.2Analog quantity part:

Sensor power :DC12V 350mA (MAX )

Input impedance:10M

Zero point adjusting range:0.2-20mV

The sensitivity:0.5uV/d

The range of input:0.2-25mV

The way of changes:Delta-sigma

The speed of A/D change:200times /second

Non-linearity:0.01%F.S

Gain and drift about:10PPM /degrees

The precision of show at most:1/10000

1.4.3Digital part:

Weight show:main show,six red high light numeral LED

Status show:Two green LEDs

The negative number shows:"-"

Overload show:"OFL "

Decimal point position:5kinds are available

Keyboard:Four key sound production keyboards

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2.Installation

2.1General principle

GM8802F weighing transmitter use 220V 50Hz to have end that protect exchange the power.If not,need another one to ensure using safely and reliably.

Because the input signal of the sensor is a analog signal,it is more sensitive to electronic noise,so this signal transmission should adopt the shielding cable ,and should separate its from other cables to lay ,should not tie up it together.The signal cable should be far away from exchanging the power.Notice:Don't receive the instrument ground wire on other equipment directly.

2.2Connection of the sensor

GM8802F weighing transmitter need outer resistance meet an emergency bridge sensor ,push Fig.way connect sensor reach instrument.Elected at four-line sensor ,must short to connect with EX+and SN+,SN-with EX-short of instrument.Sensor cable should try one's best to far away from other cables ,especially don't tie

up with other cables together.

EX+:Power+EX-:Power-SN+:Reaction+SN-:Reaction-SIG+:Signal+SIG-:Signal-

2.3Connection of the power

Six-line

EX+SN+EX-SN-SIG+SIG-Shield Four-line EX+EX-

SIG+SIG-Shield

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5-16GM8802F weighing transmitter uses a 220V 、50Hz alternating current with the ground protecting.Connect as

the following picture showing:

L -Fire G -ground N -zero

2.4Connection of the s erial interface

GM880GM8802F

2F supports a serial communication interface （RS232or RS485）,

The interface’s

definition is as follows:

The way of serial interface can be chosen through the inside switch,the

products have been demanded to confirm as RS-232or RS-485according to

users'order when

being dispatched from the factory.

Connection drawing of the instrument connecting with computer(Way of RS-232)

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Connection drawing of the instrument connecting with up computer(Way of RS-RS-485485)

3.Operation of data input

In the course of calibration and working parameter setting up,need to do the data input,the concrete operation is as follows:

When the instrument shows that glimmers in the location to glimmer,

input to operate with the following button:

Glimmer location datum add1.When the data is9,push this

key again,glimmer location is0.

：Glimmer location moves a bit to right.When glimmer

location last bit on the right

,push key this key again,the bit moves to the first on the left.

Confirm the data input and finish operating

Enable showing all data zero clearing,glimmer

in the location and does not change.

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4.Calibration

Use GM8802F instrument for the first time ,weigh wanton part of system change to some extent and equipment setting up parameter can meet user when the instructions for use at present,should adjust to the instrument ,the concrete operation instructions is as follows:

In the normal working state,don’t stop pressing the key until

the mainly show shows “CAL”,press the

to confirm,and go into the state of calibration.

If users only want to change a certain parameter,then after finishing changing and confirming,press

,then the instrument will keep this change,and return to the normal working state 4.1Method of calibration

4.1.1

Enter the function setting up

Don’t stop pressing key

until mainly show

shows 〖CAL 〗,and then press

to do calibration

4.1.2The decimal point

position

Mainly show shows 〖Pt Pt0.0000.000〗,If does not

change the decimal point position ,press key to confirm,and enter the next step ;otherwise

use the to choose,decimal point position amount to 5kinds,pay

respects to "Calibration parameter form ".Press the key to do the next step.4.1.3The m inimum graduation setting up

Mainly show shows 〖1d=〗,If does

not change the

minimum graduation ,press the key directly to confirm,and enter

the

next

step ;otherwise use the to choose,the minimum graduation

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5-110do the next step.

4.1.4The large largest st

measure setting up Mainly show shows 〖CP 〗.If does not change the largest

measure,press directly to confirm,and enter the

next step ;otherwise consult the method of the chapter "The

data input ",input value of the largest measure.

Notice:the largest measure ≤the minimum graduation *10000.

Press the key to do the next step.

4.1.5Millivolt showing

Mainly show shows 〖t x.xxx 〗,that is the present load cell’s millivolt

,press the to do the next step.

4.1.6Zero calibration 1

Mainly show shows millivolt of the load cell exported when the

balance is empty.

※After showing steadily ,it is standard to go on zero calibration.

※Pair show shows 〖OVER 〗,it means the signal of the load cell output is too big.

※Pair show shows 〖UNDER 〗,it means the signal of the load cell output is too small.

Please record the millivolt now,you can use it to do calibration by no standard weight as meeting an urgent need to count in 4.1.7.

Fill in the conduct to back up in the form as follow:

Times

Millivolt at zero（mV）Date Explanation

1

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4.1.7Zero calibration 2

If does not do zero calibration,press the key go on the next step directly;If do,press the go on the next step.

When the mainly show shows 〖o x.xxx 〗,press the key to the state of zero millivolt inputting,input the millivolt recording in 4.1.6;after finishing ,press the to go on the next step.4.1.8Gain calibration 1

Put the standard weight that close to the most on 80%of the

largest measure on balance,mainly show shows 〖c x.xxx 〗,that is the millivolt of the load cell exported ,after showing steadily,go on the next step.

Please record the millivolt and the weight value of standard weight now,you can use it to do calibration by no standard weight as meeting an urgent when you need.

Fill in the conduct to back up in the form as follow:

While mainly show shows 〖c xx.xxx 〗,press the key

to go on the 5

Times

Millivolt at zero （mV ）Standard weight （Kg ）Date Explanation

1

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5-112state of gaining millivolt inputting ,input the value of millivolt that you count ,after finishing,press the

go to the next step.

4.1.9Gain calibration 2

If do gain calibration,press the

to go on the next step;If don’t ,press the

return to the normal working state.4.1.10

Gain calibration 3

At this time,input the weight of standard weight as

“The

operation of data input”,and then press the return to the normal working state.4.2Calibration parameter form

Symbol

Parameter Pattern Value of parameter First value Point

Decimal point position 500.00.000.0000.000001d=The

minimum

graduation

61251020501CP The largest

measure ≤The minimum

graduation ×1000010000

5.Working parameter setting up

5.1Method of working parameter setting up

In the normal working state,press the key

mainly show shows “S etup”,press the key to confirm,and

go into the working parameter setting up.

Working parameter have two big-terms,F1and F2,and have several mini-terms under each big-item,the choice between item and item is used

to go on;press the

to go on the mini-term from big-item,

and pressed the key return.While needing to set up the

mini-term, press the

first,then utilize

to set up;after

finishing,press the

and after all establishment is finished,press the to withdraws.

5.2Explanation of working parameter

No.Pa r a m e te r Fi r st Expl a na tion

F1No No The first big-item

F1.100～9901Number of the balance

F1.21～97

Straining wave parameter of AD hardware

1：Effect of straining wave is worst.

9：Effect of straining wave is best

F1.30～91

Range of zero chasing(0-9d available).If it is

0,the function is shut off.

F1.41～91Range of steady sentencing(1-9d available)

F1.50.0.00～9.9 5.0

Range of zero clearing(full quantity from0%-

9.9%)

F1.6ON

ON//OFF OFF

Zero cleaning when power,

OFF:-close,ON:-open

F1.71200～576001200Potter rate of serial interface.

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5-114F1.80~94Figure straining wave parameter

0：No straining wave

9：Result of figure straining wave is best

F2

No No The second big-item F2.1RS/RE RS Serial port form choice

F2.2READ/CONT READ The communication way of the serial port,

READ:ordering way;

CONT:continual way.

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6.Operation

When the instrument gets on power,it examines by oneself at first ,the buzzer rings,the showing window mainly show and pair show flashes 8,the state indicator lamp of the instrument glimmers at the same time.After examining and passing,the instrument goes into the normal working state,mainly show is the present weight value.When the weight value at present of the instrument changes the range in 0±1/4d,the LED 【ZERO 】is on;When it changes in the steady range,the LED 【STAB 】is on;

6.1The operation of zero clearing

Under the normal working state,press the key ,it can do zero

clearing to the instrument (the weight showing at present should be within the zero clearing range,otherwise not do zero clearing ).

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5-1167.Serial port

GM8802F batching controller has one serial port of RS232/RS485(chooses through the hardware switch within the instrument ),in order to go to communication with https://www.360docs.net/doc/528144039.html,munication way adopts the way of replying(namely the computer sends an order frame to instrument,after getting the order,the instrument returns a respond frame upward computer to realize communication),and also adopts the continual way(namely the instrument sends the weight data and the status data to the computer continually,do not get any order from the computer).

7.1Serial modes

Potter rate ：1200、2400、4800、9600、19200、56700可选Available Byte form ：

Initial location ---------1bit

long of the character ---------7bit

Stopping location ---------1bit

Code ：ASCII

Check-up ：Even checking-up

7.2Data modes

7.2.1Continual way that under RS communication form

In working parameter setting up,F2.1is RS;F2.2is CONT.The instrument sends the data of weight and state continually from the serial port.The data form is as follow:Among them :

STX ——Initial symbol (02H )

State ——M(4DH)Steady;S:(53H)Unstable;O:(4FH)Overflow

STX State +/-DDDDDDD CRC CR LF

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+/-——Symbol ，+（2BH ）-（2DH ）

DDDDDDD ——7bits of weight including decimal point,the high

position is in front.

R ——（52H ）

S ——（53H ）

CRC ——Sum of the value of check-up.All its number value summation

in the front is changed into the decimal system in the check-up,

then fetch the last two and transfer to ASCII.

CR ——(0DH)Returning symbol

LF ——(0AH)Sign that change a new line

7.2.2Ordering way that under RS communication form

In working parameter setting up,F2.1is RS;F2.2is READ.

The data form is as follow:

T he computer reads the state of the instrument

Among them :

STX ——Initial symbol (02H )

Address ——Number of the balance,2bits;If the number of the balance is

01,that is 30H 31H

R ——（52H ）

S ——（53H ）

CRC ——Sum of the value of check-up.All its number value summation

in the front is changed into the decimal system in the check-up,

then fetch the last two and transfer to ASCII.

CR ——(0DH)Returning symbol

LF ——(0AH)Sign that change a new line

For example:When reading the state of the No.2balance,the data form that it

sends is:

023032525336350D 0A

The instrument’s responding:

STX Addr.R S CRC CR LF

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5-118Among them :

STX ——Initial symbol (02H )

Address ——Number of the balance,2bits;If the number of the balance is

01,that is 30H 31H

R ——（52H ）

S ——（53H ）

000——3bits （30H 30H 30H ）

State ——M(4DH)Steady;S:(53H)Unstable;O:(4FH)Overflow

DDDDDDD ——Mainly show value (6bits),if the value is negative then

the high position is negative.

For example,the mainly show of the instrument is -1.345,then,

that is 2DH 30H 31H 33H 34H 35H

Among them,2DH is mean negative.

the mainly show of the instrument is 1.345,then,

that is 30H 30H 31H 33H 34H 35H

CRC ——Sum of the value of check-up.All its number value summation

in the front is changed into the decimal system in the check-up,

then fetch the last two and transfer to ASCII.

CR ——(0DH)Returning symbol

LF ——(0AH)Sign that change a new line

The data form of state returning:

0230315253303030532D 303331343834340D 0A

It means the present state of No.1balance is:the instrument is in the unstable state,mainly show shows -3148

Reading the decimal point

STX ——Initial symbol (02H )

Address ——Number of the balance,2bits;If the number of the balance is

01,that is 30H 31H

R ——（52H ）

STX Addr.R S 000State DDDDDD CRC CR LF

STX Addr.R P CRC CR LF

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P ——（50H ）

CRC ——Sum of the value of check-up.All its number value summation

in the front is changed into the decimal system in the check-up,

then fetch the last two and transfer to ASCII.

CR ——(0DH)Returning symbol

LF ——(0AH)Sign that change a new line

For example:Data form that send an order of reading the decimal point to the

instrument:

023031525036310D 0A

The instrument’s responding:

Among them:

STX ——Initial symbol (02H )

Address ——Number of the balance,2bits;If the number of the balance is

01,that is 30H 31H

R ——（52H ）

P ——（50H ）

DDDDDD ——000000～000004,Correspond 0,0.0,0.00,0.000,

0.0000。If the decimal point is 0.000,then that is 30H 30H

30H 30H 30H 33H

CRC ——Sum of the value of check-up.All its number value summation

in the front is changed into the decimal system in the check-up,

then fetch the last two and transfer to ASCII.

CR ——(0DH)Returning symbol

LF ——(0AH)Sign that change a new line

For example:Data form of the decimal point that the instrument return:

023031525030303030303135300D 0A

It means the decimal point position of the No.1balance is 1now.

Zero calibration

Take the current weight as calibration zero point

STX Addr.R P DDDDDD CRC CR LF

STX Addr.C Z CRC CR LF