Avery Weigh-Tronix 3700LP Manuale utente

3700LP

Bench Scale Series

User’s Manual

23700LP Bench Scale Series User’s Manual

10/04/05 3700LP_U.P65 PN 43018-0018B e2 Printed in USA

Risk of electrical shock. Do not remove cover. No user service-

able parts inside. Refer servicing to qualified service personnel.

Weigh-Tronix reserves the right to change

specifications at any time.

CAUTION

EUROPEAN COUNTRIES

WARNING

This is a Class A product. In a domestic environment this product may cause radio

interference in which the user may be required to take adequate measures.

3700LP Bench Scale Series User’s Manual

Table of Contents

Table of Contents .............................................................................. 3

Specifications..................................................................................... 4

Introduction ........................................................................................ 5

Unpacking and Setup ........................................................................ 5

Front Panel ........................................................................................ 6

Operation ........................................................................................... 6

Performing a Weighment ............................................................. 6

Printout Output ............................................................................. 7

Operation of the Optional Footswitch ........................................... 8

Sleep Mode and Power Down Timer ............................................ 8

Battery Information ............................................................................ 9

Maintenance ...................................................................................... 9

RS-232 Protocols ............................................................................... 9

RS-232 Protocol Tables ............................................................... 9

Diagnostics Menu ............................................................................ 13

Installing the Display Mounting Bracket ........................................... 15

43700LP Bench Scale Series User’s Manual

Specifications

Model Capacity LB (kg) Dimensions Resolution LB (g)

3730LP 10 (5) 10.4” x 10.4” x 2.5” .002 (1)

3730LP 25 (10) 10.4” x 10.4” x 2.5” .005 (2)

3730LP 50 (25) 10.4” x 10.4” x 2.5” .01 (5)

3732LP 100 (50) 14” x 14” x 2.9” .02 (10)

3732LP 250 (100) 14” x 14” x 2.9” .05 (20)

3734LP 100 (50) 18” x 18” x 3.1” .02 (10)

3734LP 250 (100) 18” x 18” x 3.1” .05 (20)

Capacity and Dimensions

Construction

Display

Units of measure

Keys

Power

Agencies

Aluminum base on 10”x10” model or mild steel base on 14”x14” and 18”x18”

models. Stainless steel shroud.

Backlit LCD display with six .5” tall digits. Housed in a 6” aluminum alloy

extrusion. Display can be attached to base with supplied aluminum display

bracket and secured with magnetic strips. Can also be remotely mounted

with 7’ of included cable.

lb, kg, g or oz. Front panel switching between units of measure (Note: only

two units active at any one time).

Units, Print and Zero.

120 VAC ±10% - 15%, 60 Hz. (UL/CSA)

100,000 internal counts of resolution.

Internally mounted on models 3732LP and 3734LP. Wall mounted on model

3730LP.

Up to 200% of scale rated capacity.

6 hours when powered down.

Bidirectional RS-232 with selectable baud rates from 1200 to 19.2K.

41°F to 104°F (5°C to 40°C). 10 to 95% relative humidity, non-condensing.

NTEP (5,000 divisions Class III, C.O.C. # 02-069)

Factory installed battery: Up to 20 hours of continuous operation with

backlight turned on. When used with the display backlight turned off or in

auto mode, battery operation is extended up to 75 hours of operation.

Internally mounted, sealed lead acid gel cell battery provides up to 500

discharge/recharge cycles. Battery fully recharges in 6 hours by plugging the

scale into an AC outlet. Scale can be used while recharging. (Not available

on 3730LP model)

Distributor installed battery kit – (Not available on 3730LP Models)

Auto power off – Two power saving modes can be configured to turn the

backlight off or shut down the scale after inactivity to preserve battery life.

Ball top kit – (Not available on 3730LP Models)

Display swivel bracket kit

12” pole display kit

Footswitch for zero or print (factory installed)– With 4 ft. or 10 ft. long

cable assembly.

230 VAC operation – 230 VAC ±10% - 15%, 50 Hz

Internal resolution

Power supply

Overload

Battery recharge time

Output

Operating environment

Options

3700LP Bench Scale Series User’s Manual

Introduction

The 3700LP Series is made up of several sizes and capacities of low profile

bench scales. These scales have heavy duty bases, stainless steel, wrap-

around shrouds and easy to see and operate display panels that can be

mounted on the unit or remotely, by cable. See Specifications for all the

options and models which are available.

This manual covers the following:

• Introduction to the 3700LP family

• Unpacking and setup

• Front Panel

• Operation

• Maintenance

Major sections of the manual are separated by black bar headers as seen

above (Introduction). Subheadings appear in the left column along with

important notes, tips and warnings.

If you have any problems with your scale, contact your local Avery Weigh-

Tronix distributor.

Unpacking and Setup

Unpack your 3700 scale and inspect it for shipping damage. Report any

damage to your shipping company immediately and save all packing materi-

als.

Place the unit on a stable, level surface. Look at the bubble level under the

stainless steel shroud as you adjust the threaded feet to level the scale.

Tighten the jam nuts up against the scale base once the scale is level.

Plug the display cable into the proper connector on the back of the scale.

Plug the power cord into the proper connector on the back of the scale.

If your unit is battery powered, charge the battery for 6 hours and disconnect

from the charger before using the scale. Battery life depends on usage of

the backlight and other factors.

The 10” x 10” scales do not have the battery option.

If you have a printer or other peripheral device, plug it into the proper

connector on the back of the scale.

Only plug this unit into a

properly grounded, easily

accessible outlet of the

proper voltage. Injury or

damage to the unit may

occur if the unit is not

properly grounded.

63700LP Bench Scale Series User’s Manual

The front panel consists of the display window, annunciator labels, and three

operation keys; PRINT, UNITS, and ZERO. See Figure 1.

Figure 1

Front panel

The display has five LCD weight digits and annunciators. The display is

backlit for greater visibility.

The center-of-zero, lb and kg annunciator labels are indicated as active

when the annunciators appear to their left in the display window. In Figure 1,

the annunciators show the scale is at zero weight and in the lbs unit of

measure.

The key functions are listed below:

PRINT Press this key to send serial data to a peripheral printer or other

device. If there is motion on the scale, CANT is displayed and

no printing will occur.

UNITS Press this key to toggle between available units of measure. If

the scale is configured to limit the scale to just one unit of

measure, the display will show CANT if you try to switch the unit

of measure.

ZERO Press this key to zero the weight display. If there is motion on

the scale, CANT is displayed and the zero request is ignored.

Operation

To perform a weighment, follow these steps:

1. Remove all weight from the scale and press the ZERO key.

Display should show 0weight.

2. Place the item to be weighed on the scale.

Display shows the weight.

3. Remove the item and repeat steps 1 and 2 for each item.

Performing a

Weighment

Front Panel

The center-of-zero annunciator

lights up when the scale is

within ¼ graduation of zero.

3700LP Bench Scale Series User’s Manual

If your system is configured for printing of weights and you have a printer

properly connected to the scale, the printer will print the weight information

either

• after the weight is stable or

• after the item is removed from the scale, depending on the configura-

tion settings. See the Service Manual for information on configuring the

scale.

Output depends on the printer and paper/label stock being used. Figure 2

shows a sample printout on a papertape printer (such as the WP-234) when

time and date are installed. If time and date are not present in the printer,

just the weight and unit of measure are printed.

Printing Output

10/07/03

28.01 lb

Figure 2

Papertape sample printout

Figure 3 shows a sample printout from a label printer (such as the Zebra LP-

2844) on 1.2" x .85" label stock. This sample shows the date. If your printer

is not equipped with time and date capability, the date will not be present.

Figure 3

Small label sample printout

(1.2" x .85")

For detailed printing protocol

information, see the section

titled RS-232 Protocols.

DE-9 Female Scale

Pin Name Direction

1. JMP 1 -

2. TXD OUT

3. RXD IN

4. JMP 1 -

5. SG -

6. JMP 1 -

7. JMP 2 -

8. JMP 2 -

9. NC -

Serial Connector Pin-out

Date information is supplied by

the printer, not by the 3700. If

your printer does not have date

capabilities, the printout will not

show the date.

83700LP Bench Scale Series User’s Manual

Operation of the

Optional Footswitch

If you have the optional footswitch attached to the scale you can use it to

zero the scale or print a weighment, depending on how the scale is config-

ured.

To zero the scale with the footswitch, empty the scale and press the foot-

switch. The scale display will show 0weight.

To print a weighment with the footswitch, place the item on the scale, wait

for the weight to stabilize and press the footswitch. The printer will print the

weighment.

If the scale is equipped with the battery option, the scale can be shut off by

pressing and holding the ZERO key for approximately five seconds.

The sleep timer is only available on battery equipped scales. If your system

is battery powered and is configured for sleep mode, after a preset time with

no scale or button activity (5, 30 or 60 minutes) several electronic functions

go to sleep to save battery power. The display will show SLEEP and press-

ing any key will wake-up the scale.

The power down timer, if configured, will shut off the scale completely after

approximately 1 hour of sleep. To power up the scale from this state you

must either press the ON button located near the connections on the back of

the scale or unplug and then plug-in the power cord.

Figure 4

Large barcode label sample printout

(4" x 2.25")

Figure 4 shows a sample printout with barcode on 4" x 2.25" label stock.

This sample shows time and date. If your printer is not equipped with time

and date, they will not be present.

Sleep Mode and Power

Down Timer

3700LP Bench Scale Series User’s Manual

Maintenance

There is little to do to maintain this scale.

• Keep the platter clean

• Regularly check calibration with a test weight

• Do not use water on the base. A cloth dampened with cleaner is

sufficient for wiping the surface.

Battery Information

The battery powered units must be charged prior to use. Plug in the AC cord

to charge an installed battery. A drained battery will charge in about six

hours.

With approximately one hour of use left in the battery, the display will flash

LOBAT every 15 seconds.

There are three types of RS-232 output protocol:

Type of Protocol Displayed as

1. Standard ProBench NCI (Default)

2. NCI Model 3835 3835

3. Model 8213 8213

See RS-232 Protocol Tables, with accompanying legend and notes, for

protocol code.

The default baud rate is 9600, 8 data bits, no parity.

Legend: The following symbols are used in protocol tables.

p ............................. Polarity of weight

“-” for negative

“ ” (space character for positive)

[CR] ........................ ASCII carriage return

[LF] ......................... ASCII line feed

[ETX] ...................... ASCII end of text

[HL] ......................... H = high scale status byte. L = low scale status byte.

[STATUS] ............... Toledo scale status byte

[CONFIDENCE] ...... Toledo confidence test status byte

The serial data format is

- 1 Start bit

- 7 Data bits (8 with no parity)

- 1 Parity bit

- 1 Stop bit

Computer commands and scale

responses are upper and

lowercase character strings.

- (CR) is an ASCII carriage

return

- (LF) is an ASCII line feed

- (ETX) is an ASCII end of text

- x is a weight digit (0-9)

RS-232 Protocols

RS-232 Protocol

Tables

10 3700LP Bench Scale Series User’s Manual

Notes: Numbers 1 - 4 below are referenced in the protocol tables under

NOTES:

1. The decimal point position may be different depending on selected

capacity and division.

2. A space character is added to bring character count to the same as

capacities with a decimal point.

3. A status byte is sent if the scale is in motion, under zero, over capacity or

the scale is at center-of-zero.

ProBench Scale Status Byte Formats

High Order Byte [H]

BIT: 7 6 5 4 3 2 1 0

In motion

At zero

Not used

Always = 1

Always = 0

Parity bit

Low Order Byte [L]

BIT: 7 6 5 4 3 2 1 0

Under Cap.

Over Cap.

Not used

Always = 1

Always = 0

Parity

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