Tinley DLA1 Manuel utilisateur

DLA1

Digital Load Amplifier

Tinley Electronics Ltd., 235 Bentley Way,

LYMINGTON, SO41 8JW

Tel: 01590 610071 Fax: 01590 610072

email: [email protected]

www.tinleyelectronics.com

User Manual

HB-DLA1-V1.00

Introduction

Congratulations on your purchase of the DLA1 Digital Load Amplifier

from Tinley Electronics.

Disclaimer

Tinley Electronics Ltd accept no responsibility for the use of this

equipment. This equipment is not designed to replace conventional

navigation procedures. Information in this document is subject to change

without notice. Tinley Electronics reserve the right to change its products

and documentation without obligation to notify any person or

organisation of such changes.

DLA1 Calibration

The DLA1 can be calibrated via a Dataline display, a PC running a

terminal program or by using the pushbutton and screw adjustment

inside the top cover.

Calibration should be performed with no load on the load cell.

Test Calibration

To momentarily test the unit and check the calibration, press the

pushbutton during normal operation. The unit will resume normal

operation on releasing the pushbutton.

Pushbutton Calibration

Depending on the type of instruments/displays connected to the DLA1, it

may be useful to connect a voltmeter to the 0-5V output to read the

adjustments whilst they are being made during ‘Pushbutton Calibration’.

With the exception of ‘Zero Calibration’, you can choose to either

calibrate or skip each calibration function by simply not turning the

adjustment screw and pressing the pushbutton to skip to the next

function. The current function will only calibrate if you turn the adjustment

screw ¼ turn to initiate. You may also switch off the unit at any time

during calibration. Values already entered will still be stored.

B&G Instruments

When calibrating the DLA1 for connection to a B&G linear input, it is

recommended that you leave the calibration value set at the factory

default 1.25 Volts. Calibration will then be straightforward by setting the

B&G ‘Cal Val 3’ at a B&G display using the following formula:

B&G ‘Cal Val 3’ = Certificate Cal Figure X 520

Adjust the ‘Cal Val 3’ figure to fine tune calibration. ‘Cal Val 2’ may

require a small negative value to fine tune zero

TackTick Instruments

When calibrating the DLA1 for connection to a TackTick Wireless

Interface, it is recommended that you set the output mode to TackTick

before calibrating DLA1 to the load cell.

Start Pushbutton Calibration

Hold pushbutton pressed while powering up DLA1

Unit enters ‘CALIBRATE’ mode, switching in a calibration resistor and

outputting the current calibration figure. To adjust this figure, turn the

adjustment screw until the output changes to the desired value and then

press the pushbutton to move onto the next calibration function. To keep

the current calibration figure but reset and store the zero value, press the

pushbutton without turning the adjustment screw. It is very important to

have no load on the load cell at this point!

Set Trip Point

The DLA1 enters ‘TRIP SET’ mode and switches out the calibration

resistor. If the trip point is set between 0.1 and 5 the unit outputs the

currently set trip point figure from the 0-5 Volt output. If the trip point is

switched off, the unit will output 0V. If the trip point has been set to over

5, the unit will output 5V. To adjust this figure, turn the adjustment screw

until the output changes to the desired value and then press the

pushbutton to move onto the next calibration function. To keep the

current trip figure, press the pushbutton without turning the adjustment

screw.

Calibrate Voltage

The DLA1 enters ‘BATT CAL’ mode. The 0-5V output is not used in this

calibration mode. You need to connect the DLA1 to a Dataline display or

a PC serial port to the NMEA 0/P to adjust the battery voltage.

To adjust the battery voltage, turn the adjustment screw until the output

changes to the desired value and press the pushbutton to move onto the

next calibration function. To keep the current voltage calibration, press

the pushbutton without turning the adjustment screw.

Mode Select

The DLA1 enters ‘MODE SELECT’ to enable the setting of the NMEA

output for Normal Dataline displays or TackTick systems in either Tonne

Force (TF) or Kilo Pound Force (KLBS). To change mode turn

adjustment screw until output changes to desired type and press

pushbutton to move onto the next calibrate function. To keep current

mode, press the pushbutton without turning the adjustment screw.

Pushbutton Calibration function chart

Pushbutton Adjustment Screw Function 0-5 Volt Output NMEA Output

Press Test output Calibration Figure Calibration Figure

Hold &

Power Up Reset Zero Calibration Figure Calibration Figure

Adjust calibration Calibrate New Calibration Figure New Calibration

Figure

1 press Store Zero and

Calibration

Relay Trip Point Trip Point

(0.1-5V only) Normal Operation

Adjust Trip Point Set Relay Trip Point

(If a load is applied,

trip point can be

adjusted / tested to

actual load)

New Trip Point

(0.1-5V only)

(Note B&G display will

show trip point if

calibrated)

Normal Operation

2 press Store Trip Point

Adjust Battery

Calibration Battery Calibration Off Normal Operation

(Battery Volts

output shows

current adjusted

value)

3 press Store Battery

Calibration

Cycle through NMEA

Modes NMEA Mode Select Normal Operation Current selected

Mode

4 press Store NMEA Mode

Normal Operation Normal Operation Normal Operation

PC Terminal Calibration

Connect DLA1 to PC serial port as follows:

Set terminal program to NMEA protocol = 4800 baud, 8 data bits, no

parity, 1 stop bit, no flow control, send line ends

PC DLA1

TX NMEA 1 I/P A

GND NMEA 1 I/P B

TX NMEA O/P A

GND GND

The DLA1 is happy to accept the following sentences sent as individual

characters, so typing them directly via a terminal program works well.

The terminal program must be set up to ‘send line ends with new lines’ to

enable the return key to send <CR><LF>.

Calibrate and Zero

Send: $PTINC,xxxx<CR><LF>

where xxxx = Calibration Figure X 100 (tonnes or lbs)

i.e. 1.25 = 0125

DLA1 performs calibration and stores data

Set Trip Point

Send: $PTINT,xxxx<CR><LF>

where xxxx = Trip Point X 100 (tonnes or lbs)

i.e. 2.50 = 0250

DLA1 stores data

Calibrate Voltage

Send: $PTINV,xxxx<CR><LF>

where xxxx = Actual Input Voltage X 100 i.e. 12.80 = 1280

DLA1 calibrates and stores data

Mode Select

Send: $PTINM,x<CR><LF>

where x= 0 for Normal Dataline, x= 1 for Tacktick KLBS,

x= 2 for TackTick TF

DLA1 stores data and switches the mode if it has changed

Specifications

Power

Voltage Input 10 to 32 VDC

Current consumption 50 mA

Construction

Rugged ABS case, Silicone Gasket, Cable Gland, IP67

Dimensions

80mm x 135mm x 53mm including gland

NMEA 0183 Output

$YXXDR,G,xx.xx,,001*hh<CR><LF>

where xx.xx = load units dependent on calibration

$PSTOB,xx.x*hh<CR><LF>

where xx.x = battery volts

Or Proprietary TackTick output

CANBus Output (NMEA2000 compatible)

PGN 65288 (Proprietary) Load Output in Tonnes Force:

Byte 1 = FF Manufacture

Byte 2 = FC Manufacture & Industry Group

Byte 3 = Load Least significant byte

Byte 4 = Load Most significant byte

Byte 5 = FF Unused

Byte 6 = FF Unused

Byte 7 = FF Unused

Byte 8 = FF Unused

PGN 126996 Product Information:

Bytes 102-110 = unique 8 character (digit) serial number

PGN 059392 ISO Acknowledge

PGN 059904 ISO Request

PGN 060928 ISO Address Claim

Level B compatible

LEN=2

0-5 Volts Output

Output impendence 10k ohm

Accuracy better than +/- 2%

Linearity better than +/- 0.5%

Specifications may change

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