Tractel HF 87 Manual

Scoreboard displays
HF 87
10 % 100 %
HF 87/1
IR
Operating and
Maintenance
Instructions
Equipment in
accordance with
CE directives
MS 87/./. R 03/03 1

SUMMARY
GENERAL WARNING 3
WIRING OF THE DISPLAY HF 87 4
WIRING OF THE LOAD CELL 5
POWER SUPPLY CONNECTION 5
TESTFUNCTIONS 6
SET – UP N°4 : CALIBRATION OF THE DISPLAY 7 - 8
x Basic calibration menu 8 - 10
x High accuracy calibration menu 11 – 12
x Synoptic Set-Up 4 13
SET – UP N° 1 : TRIP POINTS ADJUSTMENT 14
x Definitions 15
x Synoptic Set-Up 1 13
SET UP N°2 : AUTOMATIC TRIP POINTS ADJUSTMENT 17
x One safety trip point 17
x One safety trip point and slack wire rope detection 18
x One safety trip point and one intermediate trip point 19
GAIN AND ZERO ADJUSTMENT 20
SAFETY WIRING DIAGRAMS 21 - 22
LOAD CELL WIRING DIAGRAMS 23
x Load cell with build in converter 23
x Load cell with remote converter 24
x Sum of load cells with millivolts signal out put 25
x Sum of load cells with frequency signal out put 26
x Radio transmission 27
TROUBLE–SHOOTING 28
INFORMATION MESSAGES 29
MS 87/./. R 03/03 2

GENERAL WARNING
1- Reading and fully understanding the technical data sheets relating to this
equipment is essential for the best use of this high technological material
that you have received. All the technical data sheets are available on
request.
2- Before installing and operating Dynasafe® equipment it is essential for the
safe and correct operation of the material that this manual be read and fully
understood and that all the instructions be followed. This manual should be
made available to every operator. Extra copies of this manual will be
supplied on request.
3- The installation and operation of Dynasafe® equipment should only be
carried out in accordance with the appropriate health and safety at work
regulations.
4- Never apply to the Dynasafe® a load or an effort in excess of the working
load limit, and never use it for an operation for which it is not intended.
5- TRACTEL SAS declines any responsibility for the consequences of
dismantling or altering the machine by any unauthorised person.
6- Dynasafe® equipment must not be used in explosive atmospheres.
7- Dynasafe® equipment must only be used in a system designed for lifting
people after ensuring that the appropriate operating coefficients have be
used in accordance with the current regulations.
8- Prior to the use of Dynasafe® equipment with complementary equipment
relaying the signals to an operating system, the user or installer of this
system should carry out a specific risk analysis of the operating functions.
The appropriate measures should be taken to obviate the risks identified.
MS 87/./. R 03/03 3

MS 87/./. R 03/03 4
NO1
NO2
NO1
NO2
FUSE
COM-
220+
380
LP
COM+
COM+
SIR
0V
+12
-12
RCPT
0V
IN1
IN2
IN3
IN4
TXD+
0V
TXD-
RXD+
RXD-
DEPHD
DEPHM
POWER LIMIT
CONNECTION OF SCOREBOARD DISPLAY HF/87
LO relay (NO)
HI relay ( NO)
Power supply
SHUNT
Tare
light horn
Load cell
NO 1 : S-LO intermediary trip point (NO 5 Amp) 0 V : common for tare and memories
NO 2 : S-HI safety trip point (NO 5 Amp) IN 1 : tare
COM : common IN 2 : set memory
220 : 220 Vca power supply IN 3 : display memory Options
380 : 380 Vca power supply IN 4 : reset memory to zero
LP : flashing light (negative) DEPHD : down*
COM + : Common alarm (positive) DEPHM : up*
COM - : Common alarm (positive) 0 V : common for direction of operation*
SIR : alarm (negative)
0 V : sensor TXD + : data transfer +
+ 12 : sensor TXD - : data transfer - Options
+ 12 : sensor RXD + : receive data +
RCPT : sensor RXD - : receive data -
*Inputs used for advanced functions " Save Working Period" calculation.

MS 87/./. R 03/03 5
0V +12 S-12
AUTOCOLLANT SUR LE BOUCHON
GAIN
ZERO
POWER
LIMIT
A
B
C
D
NO1
NO2
NO1
NO2
FUSE
COM-
220+
380
LP
COM+
COM+
SIR
0V
+12
-12
RCPT
0V
IN1
IN2
IN3
IN4
TXD+
0V
TXD-
RXD+
RXD-
DEPHD
DEPHM
POWER LIMIT
D - BORNIER DE RACCORDEMENT
A
B
C
CONNECTION OF THE ELECTRONIC LOAD CELL
Sticker in the cover back
A
- Diagnostic plug
B- Gain (span) pot.
C- Zero pot.
D- Terminal
A- Diagnostic socket D- Connection terminals
B- Gain potentiometer E- Scoreboard display terminals
C- Zero potentiometer F- Label
POWER SUPPLY CONNECTION
When the load cell and the scoreboard display have been fitted and wired correctly,
switch on the power supply.
Once the power supply is switched on, the scoreboard displays the model reference
(e.g.HF 87/1) for 2 seconds, during which time the alarms are triggered and the
safety relays reversed.
Then, it displays a value in weight units. This value will only be correct after the
system has been calibrated). ( See page 14 )
Carry the test function out.

MS 87/./. R 03/03 6
TEST FUNCTIONS
- The scoreboard display is supplied within 4 touch programming keyboard.
E
S
- Connect the keyboard to the RS 232 socket on the display.
This keyboard allows the following tests to be carried out :
- Display the signal from the load cell
Press the button to view the frequency signal from the load cell at that moment. Press the
button again to return the display of the load in kg. By default, the display returns to normal
after 4 minutes.
- Overload simulation
Press the button and hold it depressed, to simulate the overload condition. The two relays
are reversed and the alarms triggered.
- Display the parameters held in memory
Press the buttons and simultaneously. The scoreboard display will display the messages
in sequence :
Display Comments
1
tESt
Title of sequence
2
88880
Test of all digits
3
N°
Identification number of …
4
0
N° … of the lifting device
5
S –LO
Intermediate trip point
6
3000
Value of this trip point in Kg (e.g.)
7
S –HI
Safety trip point
8
10000
value of this trip point in Kg (e.g.)
9
End
End of sequence
- Display of the version of the software
Press the button E to display the version of software. (e.g. 3.11)
- Display the serial number
Press the buttons E and simultaneously to display the serial number (e.g. 662)

MS 87/./. R 03/03 7
CALIBRATION OF DISPLAY HF 87/1/. AND 87/2/.
SET-UP N° 4
(see synoptic page 13)
Display installation main steps :
1. Load cell installation and wiring.
2. Display installation and wiring.
3. Display calibration.
4. Safety trip points adjustment.
Definitions of the different calibration parameters :
nUL Set the Zero point of the measurement scale
SCAL Define the frequency ratio between zero point (
nUL ) and nominal
load value (
CALI ). Starting value: 7.000 Hz
CALI Define the nominal crane capacity e.g. : 20000 Lbs. Crane. Sheaved 4/1
CALI
= 20000
StEP Define the incremental steps of the display.
POId Calibration value regarding to a well-known load
SPEd2 Define the dynamic damper value
DBt
Double tare, return to the initial zero or the preceding zero
Complementary Advanced functions : high accuracy calibration
( Available from 4.2 software version only)
LIN
Linearity Optimisation
SET.L Set-up for Linearity Optimisation
Essential conditions :
x The load cell and display should be correctly mounted and wired.
x The hook of the lifting system should be free of any load.
Equipment required :
x A well-known load close to the maximum capacity of the lifting system. (Our example 9.975 Kg ).

MS 87/./. R 03/03 8
CALIBRATION STEPS
Procedure to access to the calibration menus
DISPLAY ACTION COMMENT.
1
425
Display before calibration
Hook with no load
2
425
S E
(5 sec)
Press buttons S & E simultaneously for 5 seconds to
access the menu of calibration.
3
CODE
(auto)
(Automatic display)
Access code
4
4567
×ØPress buttons arrows UP & Down to enter code 4567
5
4567
E Confirm the code by pressing E
6
SEt.4
(auto) Set-up N° 4.
BASIC CALIBRATION MENU
7
nUL
(auto) Parameter to set the zero point. (E.g. 750 Hz = 0 Lbs.)
8
nUL
E Press E
9
425
(auto) The display doesn’t indicate any incorrect value.
10
425
E Press E a second time to confirm the zero value.
11
nUL
The setting of the zero point is completed. Press E again
and the display will now show 0. Return the display to
the nuL by pressing E again.
12
nUL
×Press the UP arrows to pass the next stage.
13
SCAL
(auto ) Define the difference in signal between the zero point
and the working load limit (CALI)
Starting value : 7000 Hz ( Will be automatically adjusted
during the calibration process.)
14
SCAL
E Press E to view this parameter .
15
7OOO
×ØUse the arrows to correct the value to 7000 (Hz)
If necessary.
16
SCAL
E Press E to confirm.
17
SCAL
×Press the UP arrows to pass the next stage.

MS 87/./. R 03/03 9
18
CALI
(auto) Defines the working load limit of the lifting system.
E.g. 20000 Lbs. Crane capacity. Sheaved 4/1: Cali =
20000
19
CALI
E Press E to view this parameter .
20
20000
×ØUse the arrows to correct the value to 20000
21
20000
E Press E to confirm.
22
CALI
×Press the UP arrows to pass the next stage.
23
StEP
(auto) Defines the incremental step of the display
24
StEP
E Press E to view this parameter .
25
25
×ØUse the arrows to correct the value witch should be set
as the function of the accuracy required.
26
25
E Press E to confirm.
27
StEP
×Press the UP arrows to pass the next stage.
28
POId
(auto) Calibrate the measurement scale compared to a well-
known load
29
POId
E Press E to view this parameter .
30
0
(auto) The display show the value of the load currently
suspended
31
18725
Lift an accurately known load which should represent
at least 80% to 90% of the capacity of the lifting system,
the display indicates any incorrect value.
32
18725
E Press E to correct this value
33
19975
×ØUse the arrows to correct the value in unit of
measurement corresponding to the load actually lifted.
Our example : 19975 Lbs.
34
19975
E Press E to confirm.
35
POId
S Press S to return to the beginning of the sequence.
36
19975
S Press S a second time to return to the normal display of
the load.
Calibration is completed.
Note : it is advised to repeat the calibration procedure 2
or 3 times during the first months of service in order to
correct any movement as a result of the "bending-in" of
the equipment.

MS 87/./. R 03/03 10
( The next functions are not available on display manufactured before 01/01/98 )
37
Sped 2
(auto) Defines the dynamic damper value
38
Sped 2
E Press E to view this parameter .
39
5
×ØUse the arrows to correct the value witch should be set
as the function of the display stability required. (From 1
to 10 )
40
5
E Press E to confirm.
41
Sped 2
×Press the UP arrows to pass the next stage.
42
DBT
(auto) DBT= YES When you press TARE, the display
alternatively shows 0 or the value of the actual
suspended load.
DBT= NO Any time you press TARE, display will show 0.
43
DBT
E Press E to view this parameter .
44
Yes or No
×ØUse the arrows to select the required value.
Default value is YES.
45
No
E Press E to confirm.
46
DBT
×Press “S” twice
The calibration has been successfully achieved.
REMARK : This calibration is recommended for weight estimation applications.
Basic calibration set the "zero point" corresponding to no load and a "maximum point" corresponding
to the well-known load.
Between those two points a « theoretical » straight line fixes the intermediary points, friction and
mechanical efficiency may lead to some linearity faults.
When high accuracy is required, complete the basic set up with : high accuracy calibration SET L.

MS 87/./. R 03/03 11
HIGH ACCURACY CALIBRATION : SET. L
In order to increase the accuracy of the installation it could be appropriated to optimise the linearity
of the weighing system by forcing the display to show accurate pre-set points along the scale.
Several points (maximum 10) could be forced and thereby optimise the linearity.
Those points could be either uniformly spread from the “0” up to the maximum crane capacity or
concentrated on a specific range of value, where the higher accuracy is required.
Pre-set points modify not only the points values but the accuracy correction polynomial as well.
Generally three intermediary points are enough to increase significantly the weighing performance.
WARNING : This part of the menu is only workable after having successfully achieved the
SETUP 4 basic functions. From NUL (line 7) to POId (line 36).
Procedure :
x Go to Set up. 4 (step 47 LIN)
x Disable LIN parameter.
47
LIN
(auto) Accuracy optimisation. In order to initiate this procedure
you have to disable this function.
48
LIN
E Press E to view this parameter .
49
YES
×ØUse the arrows to select NO.
Default value is YES.
50
NO
E Press E to confirm your choice.
51
LIN
×Press the UP arrows to go the next stage.
x Proceed with SET.L

MS 87/./. R 03/03 12
Previous conditions at SET.L :
x Set-Up N° 4 basic functions has been successfully achieved.
x Remember ! LIN must be disabled..
Equipment required :
x As many intermediate points load as required accurate preset points.
HIGH ACCURACY CALIBRATION : SET. L
At each forced point corresponds a well-known load, e.g. if you want to set 3 forced points, you will
need 3 well-known loads identified as P1 ( point 1) for the first load, P2 ( point 2) for the second load
and so on…
x Lift load P1 and note the value showed on the display e.g. 1355 ( The displayed value will
probably NOT match perfectly the actual value of this load e.g. 1390).
x Lift load P2 and note the value showed on the display e.g. 4235. (Idem, e.g. 4210)
x Lift load P3 and note the value showed on the display e.g. 6410. ( Idem, e.g. 6425)
and so on…
x Then proceed (lines 52 to 66) as follows :
52
SEt.L
(auto) Accuracy optimization
53
SEt.L
E Press E to view this parameter .
54
P 1
×ØUse the arrows to reach the point you want to set.
55
P 1
E Press E to confirm your choice.
56
rEad
E Press E to view this parameter .
57
1355
×ØUse the arrows to enter the value you previously noted
as P1.
58
1355
E Press E to enter the value
59
rEad
×ØPress either UP or DOWN arrows to go the next step.
60
rEEL
E Press E to view this parameter .
61
1390
×ØUse the arrows to enter the actual value of P1. e.g
1390
62
1390
E Press E to enter the value.
63
1390
S Press S to go back to rEEL symbol.
64
REEL
S Press S to go back to P 1 symbol.
65
P 1
×ØUse the arrows to go to next point.
66
P 2
Repeat the process from line 55 to 65 for each different
points.
Reactivate LIN parameter ( lines 47 to 51 ) and quid Set-Up N°4 by pressing “S” twice.
Congratulation, High accuracy Set-Up N° 4 has been successfully achieved.

MS 87/./. R 03/03 13
SYNOPTIC OF CALIBRATION MENU
SET – UP . 4
( see details page 7 )
E+S 5 sec
COdE
4567 Ï
Ð
SEt.4
ÏÏÏÏÏ
STEP Ï
nuL
s
E
dbt
SCAL
s
E
CALI
s
E
POId SPEd 2
Ð
Ð
Ð
Ð
Ð
Ð
s
E
s
E
s
E
s
E
E Ï
Ð
E Ï
Ð
E Ï
Ð
EEEÏ
Ð
E
ÏÏ Ï
Ð
Ð
Ð
ÏÏÏÏÏÏ 2
7000 2000
50
Y
ES
0
1985
s
E
Ï
Ð
Ï
Ð
Ð
Ð
Ð
Ð
Ð
Ð
EÏ
Ð
2000
Ï
Ð
Basic calibration
High accuracy calibration
Ï
Ð
P.1
SEt.L
s
E
rEAD
s
E
s
E
Y
ES/NO
s
E
L
In
EÏE Ï
Ð
Ð
etc.. Ï
Ð
Ï
Ð
Ï
P.2
rEAD
s
E
s
E
Ð
EEÏÏ
Ð
Ð
ÏÏ
rEEL
s
E
rEEL
Ð
Ð
s
E
E ÏEEEÏÏÏ
Ð
Ð
Ð
Ð
ÏÏ
343 332 200 205
Ï
Ð
Ï
Ð
Ð
Ð
: Enter
E
S : Exit
s
E
: E to enter, Sto exit
Ï: Move horizontally with the arrows
Ð
: Move vertically with the arrows
Ï
Ð
: Select with the arrows.
Ï
Ð

MS 87/./. R 03/03 14
Hystérésys S-LO
Hystérésys S-LO
REL
HI
LO
S-LO
S-HI
HI-HI
SPED
140
(calcul de l'effet dynamique)
Hystérésys S-HI
ps
0
Charge (Kg)
TRIP POINTS ADJUSTMENT
Diagram :
load
Tem
time
Load cell signal

MS 87/./. R 03/03 15
Definitions :
S-HI : - Safety trip point.
- Its value is generally set at 110% of crane capacity.
- Adjustable to any point within the nominal capacity.
- Control the 'HI'. Relay.
- Value in weigh unit.
- Takes account of the dynamic effect damper.
HIHI : - Final safety trip.
- Its value is generally set at 130% of crane capacity.
- Control the 'HI'. Relay.
- Value in weigh unit.
- Default value 30 % higher than S-HI.
- Does not take account of the dynamic effect damper.
S-LO : - Intermediate trip point.
- Control the 'LO'. Relay.
- Adjustable to any point within the nominal capacity but lower than S-HI.
- Could be configured ( Set-up n°1 REL ) to detect :
- Intermediate trip point REL- HI
- Slack wire rope detection REL- LO
- Takes account of the dynamic effect damper.
Hysteresis S-LO : Gap value between triggering and reset of the 'LO' relay.
- e.g. S-LO 5000 Kg hysteresis LO 500 Kg
REL=HI : Triggering LO relay at 5000 Kg, reset at 4500 Kg.
REL=LO : Triggering LO relay at 5000 Kg, reset at 5500 Kg.
Hysteresis S-H I : Gap value between triggering and reset of the 'HI' relay.
- e.g. S-HI 7000 Kg hysteresis HI 1000 Kg
Triggering relay HI at 7000 Kg, reset at 6000 Kg.
REL : - Configuration of the LO relay.
-LO : triggering while signal is decreasing.
-HI : triggering while signal is growing.
SPED : - Configuration of the dynamic effect control.
- Value from 1 (fast) to 40 (slow).
- Default value is 20
- Calculation of the real value of the load compared to its undulatory value
may be carried out from a greater or lesser figure. The greater the sampling the
more complex and precise the calculation. On the other hand the reaction of the
relays will be longer

MS 87/./. R 03/03 16
SYNOPTIC OF MANUAL TRIP POINTS ADJUSTMENT
SET UP N°1
E+S 5 sec
COdE
1
1234
SEt.1
ÏÏ
COrr
Ð
Ð
s
E
EÏ
Ð
ÏÏ
S
-
HI S
-
LO HIHI
Ð
Ð
s
E
s
E
s
E
E E E
ÏÏÏ
Ð
Ð
Ð
3000 2000 4000
HYS
COnF
s
E
s
E
EÏ
E Ï
Ð
Ð
Ï
ÏS
-
LO S
-
HI
rEL SPEd
Ð
Ð
s
E
s
E
s
E
s
E
EE
ÏÏ
E E
ÏÏ
Ð
Ð
Ð
Ð
Ï
Ï
Ð
Ð
500 500
HI 20
: Enter
E
S : Exit
s
E : E to enter, Sto exit
Ï: Move horizontally with the arrows
Ð
: Move vertically with the arrows
Ï
Ð
: Select with the arrows.
Ï
Ð

MS 87/./. R 03/03 17
AUTOMATIC SETTING OF SAFETY TRIP POINT
SET- UP N°2
Essential conditions :
x THE TEST OPERATION SHOULD HAVE BEEN SUCCESSFULLY CARRIED OUT (page 7 )
x The relay (rEL) is set by default in « HI » (see page 16)
Equipment required :
x A load equivalent to 100 % if the working load limit of the lifting system. (E.g 20000 lbs ).
DISPLAY ACTION COMMENT
1
O
S E
(5 sec)
Press simultaneously for 5 seconds S and E to access
the menu of calibration.
2
CODE
(auto)
(automatic display)
Access code
3
2345
×ØPress the buttons UP & DOWN to enter the code 2345.
Confirm by pressing E.
4
SEt.2
(auto) Set-up N° 2. Automatic setting of the trip points..
5
N°..
(auto) N° of the lifting system.
6
...6
×ØUse the arrows to enter the n° of the lifting system.
Confirm with E.
7
S-LO
(auto) Intermediate trip point (See graph)
8
S-LO
S Intermediate trip point will not be used on this system
setting.
Go to next step by pressing S.
(As a result, the relays HI and LO will trip
simultaneously )
9
S-HI
(auto) Safety trip point S-HI.(see graph)
10
S-HI
(auto) Lift a load equivalent to the maximum capacity of
the lifting system by about 10 cm (or the maximum
permitted load)
11
S-HI
E When the lad is stable, confirm the trip point by pressing
button E.
12
- - - -
(auto) The microprocessor calculates the real value of the load.
13
11000
(auto) Display in Kg of the upper trip point (S-HI). Our e.g 11
000kg. The microprocessor calculates this trip point to
set it at 110 % of the lifted system. The final upper trip
point is automatically calculated and set at 130 % over
the safety trip point.
14
End
(auto) End of automatic setting procedure.
15
10000
(auto) The monitor returns to normal operation.
Warning : After an automatic setting via Set-up n°2, you can modify all the instructions and
configurations by using Set-up n°1.(See synoptic page 16 )

MS 87/./. R 03/03 18
AUTOMATIC SETTING OF SAFETY TRIP POINT
AND SLACK WIRE ROPE TRIP POINT
Essential conditions :
x THE TEST OPERATION SHOULD HAVE BEEN SUCCESSFULLY CARRIED OUT (Page 7 )
x The relay (rEL) is set to « LO » through SET –UP N°1 (page 16)
Equipment required :
x A lifting accessory (Load n°1) is required for setting the slack wire rope trip point S-LO.
x A load (Load n° 2) which with the lifting accessory, is equivalent to 100 % of the working load limit of
the system. (e.g 10 T).
DISPLAY ACTION COMMENT.
1
O
S E Press buttons S and E simultaneously for 5 seconds to access the
menu for automatic setting of the trip points. ( The hook should be free
of any load).
2
CODE
(auto) Access code.
3
2345 ×ØPress the buttons UP & DOWN to enter the code 2345. Confirm by
pressing E.
4
SEt.2
(auto) Set-up N° 2. Automatic setting of the trip points..
5
N°..
(auto) N° of the lifting system.
6
...6 ×ØUse the arrows to enter the n° of the lifting system. Confirm with E.
7
S-LO
(auto) Lift load N° 1 about 10 cm.
8
S-LO
EWhen the load is stable, confirm the trip point by pressing button E.
9
- - - -
(auto) The microprocessor calculates the real value of the load.
10
2750
(auto) Display in Kg of the intermediate trip point S-LO. The example shows
2750 kg.
11
S-HI
(auto) Using the lifting accessory which represents load N°1, lift load N° 2
about 10 cm.
Note: Up to 4 minutes is allowed to carry out this operation, after which time the monitor
returns to normal operation and the set-up must restart at point 1..
12
S-HI
E When the load is stable, confirm the trip point by pressing button E.
13
- - - -
(auto) The microprocessor calculates the real value of the load.
14
11000
(auto) Display in Kg of the upper trip point (S-HI). Our e.g 11 000kg. The
microprocessor calculates this trip point to set it at 110 % of the lifted
system. The final upper trip point is automatically calculated and set
at 130 % over the safety trip point.
15
End.
(auto) End of automatic setting procedure.
16
10000
(auto) The display returns to normal operation. It displays 10000 which is the
current lifted load.
17
0
(auto) The display will show 0 and switch the LO (stopping the lowering
operation) as soon as the lifting accessory, on touching the ground,
causes the signal from the load cell to fall below the S-LO trip point for
slack wire rope. Adjustable hysteresis.
Warning : After an automatic setting via Set-up n°2, you can modify all the instructions and configurations by
using Set-up n°1.(See synoptic page 16 )

MS 87/./. R 03/03 19
AUTOMATIC SETTING OF SAFETY TRIP POINT
AND INTERMEDIATE TRIP POINT
Essential conditions :
x THE TEST OPERATION SHOULD HAVE BEEN SUCCESSFULLY CARRIED OUT (page 7 )
x The relay (rEL) is set by default in « HI » (page 16)
Equipment required :
x A load (Load n°1) equivalent to the value of the intermediate trip point S-LO.
x A load (Load n° 2) equivalent to 100 % of the working load limit of the system. (e.g 10 T).
DISPLAY ACTION COMMENT.
1
O
S E Press buttons S and E simultaneously for 5 seconds to
access the menu for automatic setting of the trip points. ( The
hook should be free of any load).
2
CODE
(auto) Access code.
3
2345 ×ØPress the buttons UP & DOWN to enter the code 2345.
Confirm by pressing E.
4
SEt.2
(auto) Set-up N° 2. Automatic setting of the trip points..
5
N°..
(auto) N° of the lifting system.
6
...6 ×ØUse the arrows to enter the n° of the lifting system. Confirm
with E.
7
S-LO
(auto) Lift load N° 1 about 10 cm.
8
S-LO
EWhen the load is stable, confirm the trip point by pressing
button E.
9
- - - -
(auto) Microprocessor is calculating the actual value.
10
2750
(auto) Display in Kg of the intermediate trip point S-LO. The example
shows 2750 kg.
11
S-HI
(auto) Using the lifting accessory which represents load N°1, lift load
N° 2 about 10 cm.
Note: Up to 4 minutes is allowed to carry out this operation, after which time
the monitor returns to normal operation and the set-up must restart at point
1..
12
S-HI
E When the load is stable, confirm the trip point by pressing
button E.
13
- - - -
(auto) The microprocessor calculates the real value of the load.
14
11000
(auto) Display in Kg of the upper trip point (S-HI). Our e.g 11 000kg.
The microprocessor calculates this trip point to set it at 110 %
of the lifted system. The final upper trip point is automatically
calculated and set at 130 % over the safety trip point.
15
End.
(auto) The display returns to normal operation. It displays 10000
which is the current lifted load.
16
10000
(auto) The display will show 0 and switch the LO (stopping the
lowering operation) as soon as the lifting accessory, on
touching the ground, causes the signal from the load cell to
fall below the S-LO trip point for slack wire rope. Adjustable
hysteresis.
Warning : After an automatic setting via Set-up n°2, you can modify all the instructions and
configurations by using Set-up n°1.(See synoptic page 16 )

MS 87/./. R 03/03 20
ZERO AND GAIN ADJUSTMENT
General information :
x Load cell are adjusted from factory and put out a frequency signal of 7500 Hz at there nominal
capacity and 500 Hz without any load. ( the first 500 hertz indicates the well functioning of the
system )
x Some load cell due to the sheaving mode are not stressed at there nominal capacity. e.g. 50%. In
this case the frequency will only reach 3000 hz. This could reduce drastically the signal resolution.
x In order to reach the higher resolution as possible, for instance when load cell is used in weigh
control application, It could be convenient to optimize the signal range.
This will be carried out by "zero" and "gain" (span) potentiometers adjustment.
Essential conditions :
x THE TEST OPERATION SHOULD HAVE BEEN SUCCESSFULLY CARRIED OUT.
x No load on the cell.
x Display in frequency mode ( press Ø)
Equipment required :
x A load equivalent to 100 % if the working load limit of the lifting system.
Procedure :
DISPLAY ACTIONS COMMENT.
1 . 650 Load cell out put signal in frequency (e.g.)
2 . 650 Set the zero With the "ZERO" potentiometer , reduce the signal to
0 hz (+2- 0)
3 . . . 1
4 Lift the load
5 3500
Frequency out put signal before dajustment. e.g.
6
7000 "GAIN"
adjustment
With the "GAIN" potentiometer , increase the signal
to 7000 Hertz.
When 7000 hz are not reachable adjust as higher as
possible.
7 Put load down
8 . . 27 Load cell out put signal in frequency (e.g.)
9
. 500 "ZERO"
adjustment
With the "ZERO" potentiometer , increase the signal
to 500 Hertz..
If necessary repeat the process till get 500 hz with no
load and about 7500 hz ( or the reachable maximum)
with the nominal load.
End of the process.
Proceed with SET – UP N° 4, N°1 or N°2