GSE 350 Product manual

GSE Model 350/355
DIGITAL WEIGH INDICATOR
Technical Reference Manual
Flash Version
3.0

Model 350/355
Technical Reference Manual
Flash Version
3.0

GSE 350/355 Digital Weigh Indicator Technical Reference Manual
Copyright © 2007 SPX GSE. All rights reserved.
Published by:
SPX GSE
1525 Fairway Circle
Allen Park, MI 48101
USA
Information in this Technical Manual is subject to change without notice due to correction or
enhancement. The information described in this manual is solely the property of GSE. No part of
this manual may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording and sold for any monetary figure without the
express written permission of GSE.
GSE Locations
SPX GSE
1525 Fairway Circle
Allen Park, MI 48101
U.S.A.
Phone: [phone]
www.gse-inc.com
SPX GSE Amprobe Europe GmbH
Phone: [phone]
Fax: [phone]

i
Table of Contents
CHAPTER 1: INTRODUCTION................................................................................................... 1
STANDARD FEATURES...................................................................................................................... 1
SPECIFICATIONS ............................................................................................................................... 1
DISPLAY........................................................................................................................................... 3
LED Display................................................................................................................................ 3
LCD Display ............................................................................................................................... 4
Annunciators ............................................................................................................................... 4
350 KEYPAD .................................................................................................................................... 4
355 KEYPAD .................................................................................................................................... 6
Weigh Mode Functions ............................................................................................................... 7
Entering a Tare Value (Model 350)............................................................................................ 8
Entering a Tare Value (Model 355)............................................................................................ 8
CHAPTER 2: INDICATOR INSTALLATION............................................................................. 9
MOUNTING....................................................................................................................................... 9
Desktop Mounting....................................................................................................................... 9
Panel Mounting (Die Cast Only) ................................................................................................ 9
Permanent Mounting ................................................................................................................ 10
Outline Drawings...................................................................................................................... 10
WIRING .......................................................................................................................................... 12
Stainless Steel Model 350/355 .................................................................................................. 12
Die Cast Model 350 .................................................................................................................. 12
Load Cell Connections.............................................................................................................. 12
Serial Port Connections............................................................................................................ 13
Remote Key Connection............................................................................................................ 14
Remote Display Connections .................................................................................................... 15
Power Connection..................................................................................................................... 15
CHAPTER 3: OPTION INSTALLATION .................................................................................. 17
MODEL 350/355 OPTIONS .............................................................................................................. 17
Swivel Bracket........................................................................................................................... 17
Panel Mount Kit........................................................................................................................ 18
ANALOG CARD CONNECTIONS....................................................................................................... 19
Analog Connections .................................................................................................................. 22
Analog Board Diagnostic and Test Procedures ....................................................................... 23
SETPOINT CARD CONNECTIONS ..................................................................................................... 26
Setpoint Connections ................................................................................................................ 28
Setpoint Board Diagnostic and Test Procedures...................................................................... 29
RS-485 NETWORKING ................................................................................................................... 30
Network Connections ................................................................................................................ 31
20 MACURRENT LOOP OPTION ..................................................................................................... 33
Bi-directional ............................................................................................................................ 33
Baud .......................................................................................................................................... 33

ii
Active/Passive ........................................................................................................................... 33
Isolation .................................................................................................................................... 33
Max Voltage .............................................................................................................................. 34
Connections............................................................................................................................... 34
Cable ......................................................................................................................................... 34
Connected Devices.................................................................................................................... 34
BATTERY POWER SUPPLY .............................................................................................................. 35
Mounting................................................................................................................................... 35
Connection ................................................................................................................................ 36
ON/OFF Switch ........................................................................................................................ 37
Battery Charging ...................................................................................................................... 37
Temperature Sensing ................................................................................................................ 38
Low Battery Indication ............................................................................................................. 38
Dead Battery Shutdown ............................................................................................................ 38
Automatic Shutdown ................................................................................................................. 38
INTERNATIONAL TRANSFORMER -IEC........................................................................................... 39
Specifications ............................................................................................................................ 39
Transformers Available ............................................................................................................ 39
IEC line cords Available........................................................................................................... 39
FIBER-OPTIC INTERFACE................................................................................................................ 40
CHAPTER 4: CONFIGURATION............................................................................................... 43
ENTERING THE SETUP MODE (MODEL 350) ................................................................................... 43
ENTERING THE SETUP MODE (MODEL 355) ................................................................................... 44
SELECTING A PARAMETER ............................................................................................................. 44
CHANGING A PARAMETER VALUE ................................................................................................. 46
Selection Parameters ................................................................................................................ 46
Key-In Parameters .................................................................................................................... 46
SAVING PARAMETERS .................................................................................................................... 47
FACTORY DEFAULT ....................................................................................................................... 49
LIST OF PARAMETERS .................................................................................................................... 50
Parameter Map Details............................................................................................................. 52
PRESET TRANSMIT SELECTIONS ..................................................................................................... 59
CUSTOM TRANSMIT ....................................................................................................................... 61
Elements of a Custom Transmit ................................................................................................ 61
Writing a custom transmit ASCII text file................................................................................. 61
Accessing Setup and Clearing Existing Custom Transmit........................................................ 61
Entering ASCII Text.................................................................................................................. 62
Entering ASCII Control Codes ................................................................................................. 62
Parameter Selection Numbers .................................................................................................. 64
Exiting Setup Mode and Saving Changes ................................................................................. 65
PARTS COUNTING .......................................................................................................................... 66
ANALOG OUTPUT SETUP................................................................................................................ 67
ANALOG OUTPUT CALIBRATION .................................................................................................... 68
Entering Analog Calibration Values ........................................................................................ 68
Analog Output Example............................................................................................................ 69
SETPOINT SETUP ............................................................................................................................ 70

iii
Activation Methods (General)................................................................................................... 70
Pre-acts (General) .................................................................................................................... 71
Learn Feature (General)........................................................................................................... 71
Pause Feature (General) .......................................................................................................... 71
Changing Targets from the Weigh Mode (General) ................................................................. 72
Example (General).................................................................................................................... 72
Bargraph (General) .................................................................................................................. 73
PERCENTAGE CHECK-WEIGHING ................................................................................................... 75
Setpoint Activation (ChecP)...................................................................................................... 75
Changing Targets from the Weigh Mode (Percentage Check-Weighing) ................................ 75
Example (ChecP) ...................................................................................................................... 76
FILL ............................................................................................................................................... 77
Activation Method (Fill) ........................................................................................................... 77
Pre-acts (Fill)............................................................................................................................ 77
Learn Feature (Fill).................................................................................................................. 78
Pause Feature (Fill).................................................................................................................. 78
Changing Targets from the Weigh Mode (Fill) ........................................................................ 78
Example (Fill) ........................................................................................................................... 78
BATCH ........................................................................................................................................... 79
Activation Method (Batch)........................................................................................................ 79
Pre-acts (Batch) ........................................................................................................................ 79
Learn Feature (Batch) .............................................................................................................. 79
Pause Feature (Batch) .............................................................................................................. 80
Changing Targets from the Weigh Mode (Batch)..................................................................... 80
Example (Batch)........................................................................................................................ 80
DISCHARGE.................................................................................................................................... 81
Activation Method (Discharge)................................................................................................. 81
Pre-acts (Discharge)................................................................................................................. 81
Learn Feature (Discharge) .......................................................................................................82
Pause Feature (Discharge).......................................................................................................82
Example (Discharge) ................................................................................................................ 82
BOTH ............................................................................................................................................. 83
Activation Method (Both).......................................................................................................... 83
Pre-acts (Both).......................................................................................................................... 83
Learn Feature (Both) ................................................................................................................ 83
Pause Feature (Both)................................................................................................................ 84
Target Changes from the Weigh Mode (Both).......................................................................... 84
Example (Both) ......................................................................................................................... 84
ABSOLUTE CHECK-WEIGHING ....................................................................................................... 85
Setpoint Activation (ChecA)...................................................................................................... 85
Changing Targets from the Weigh Mode (ChecA) ................................................................... 85
Example (ChecA) ...................................................................................................................... 86
INDEPENDENT SETPOINT OPERATION............................................................................................. 87
Setpoint Activation (Independent)............................................................................................. 87
Changing Targets from the Weigh Mode (Independent) .......................................................... 88
Example (Independent) ............................................................................................................. 88

iv
TARGET DEVIATION CHECK-WEIGHING ........................................................................................ 89
Setpoint Activation (ChecB)...................................................................................................... 89
Changing Targets from the Weigh Mode (ChecB) ................................................................... 89
Example (ChecB) ...................................................................................................................... 90
BATCH 2 ........................................................................................................................................ 92
Activation Method (Batch2)......................................................................................................92
Pause Feature (Batch2) ............................................................................................................ 92
Changing Targets from the Weigh Mode (Batch2)................................................................... 92
Example (Batch2)...................................................................................................................... 93
SETPOINT ERROR CODES................................................................................................................ 93
REMOTE KEY SETUP ...................................................................................................................... 94
REMOTE SERIAL OPERATION ......................................................................................................... 94
Display Capture Utility............................................................................................................. 95
TIME AND DATE SETUP (MODEL 350)............................................................................................ 96
TIME AND DATE SETUP (MODEL 355)............................................................................................ 97
RS-485 MULTI-DROP NETWORK SETUP AND OPERATION ............................................................. 98
Setup.......................................................................................................................................... 98
Operation .................................................................................................................................. 98
Network Protocol...................................................................................................................... 98
UPGRADE INDICATOR FIRMWARE .................................................................................................. 99
Prepare for upgrade ................................................................................................................. 99
Load Flash File......................................................................................................................... 99
REMOTE DISPLAY CONFIGURATION............................................................................................. 100
Master to Remote (Slave) Configuration ................................................................................ 100
Setup Master Indicator ........................................................................................................... 100
Setup Remote Indicator.......................................................................................................... 101
CONTROL (HAZARDOUS AREA)TO HUB (SAFE AREA)CONFIGURATION ..................................... 104
300 SERIES COMMAND CODES..................................................................................................... 105
ID NUMBER ENTRY...................................................................................................................... 107
CHAPTER 5: CALIBRATION ................................................................................................... 109
SETUP MODE CALIBRATION......................................................................................................... 109
FAST CALIBRATION...................................................................................................................... 109
PERFORMING CALIBRATION ......................................................................................................... 110
ESTABLISHING ZERO.................................................................................................................... 110
First Zero ................................................................................................................................ 110
Last Zero ................................................................................................................................. 112
False Zero ............................................................................................................................... 114
Only Zero ................................................................................................................................ 116
Reset Calibration .................................................................................................................... 117
MULTI-POINT LINEARIZATION ..................................................................................................... 120
Examining Calibration Results ............................................................................................... 121
ESTABLISHING A SPAN ................................................................................................................. 121
EXITING CALIBRATION ................................................................................................................ 122
CHAPTER 6: LEGAL FOR TRADE ......................................................................................... 123
NTEP REQUIREMENTS................................................................................................................. 123

v
NTEP PANEL MOUNT REQUIREMENTS ........................................................................................ 123
OMIL REQUIREMENTS................................................................................................................. 124
OTHER REQUIREMENTS................................................................................................................ 124
SEALING AND AUDIT TRAILS ....................................................................................................... 125
Physical Seal........................................................................................................................... 125
Audit Trails ............................................................................................................................. 126
CHAPTER 7: TROUBLESHOOTING ...................................................................................... 129
ERROR MESSAGES ....................................................................................................................... 129
Operational Errors ................................................................................................................. 129
Setup Mode Errors.................................................................................................................. 129
Hardware Errors .................................................................................................................... 130
Calibration Errors .................................................................................................................. 130
Communication Errors ........................................................................................................... 130
Miscellaneous Errors.............................................................................................................. 131
VIEWING SETUP ........................................................................................................................... 131
INFORMATION MODE PARAMETERS ............................................................................................. 132
A/D CALIBRATION PROCEDURE................................................................................................... 134

350/355 Technical Reference
1
CHAPTER 1: INTRODUCTION
Thank you for selecting the GSE Model 350/355 Indicator. The Model 350 and Model 355 continue the GSE
tradition of Excellence in Weighing and Counting Technology. A properly installed and maintained Model
350 or Model 355 will provide many years of reliable, accurate performance.
The chapters of this manual focus on various aspects of the Model 350/355:
Chapter 1: Introduction Features and Specifications
Chapter 2: Indicator Installation Mounting and wiring connections
Chapter 3: Option Installation Installing and setting up options
Chapter 4: Configuration Using the Model 350/355
Chapter 5: Calibration Calibrate the indicator to a scale
Chapter 6: Legal for Trade NTEP and OIML requirements
Chapter 7: Troubleshooting Troubleshooting help and error messages
Standard Features
The Model 350 and Model 355 include built-in functions that you can enable through the Indicator Setup.
Refer to Chapter 4: Configuration for information on the setup and operation of the following standard
functions:
•Check-weighing
•Fill, two-speed, single ingredient
•Batch, three ingredients, single-speed
•Loss-in weight, two-speed emptying
•Independent setpoints
•Parts counting
•Remote key operation
•Selectable, built-in data transmission formats
•Custom data transmissions
•Real time clock with battery backed time and date.
•Numeric keypad (Model 355 only)
•Easily update firmware via the RS-232 port
Specifications
PERFORMANCE
Full Scale (F.S.) Selectable 0 to 999,999
Resolution 20-bit A/D converter, 100,000d displayed, 1,000,000d internal
A/D Conversion 60 Hz
Zero Track 0 – 100% of F.S.
Operating Temperature -10°C to +40°C
Units of Measure lb, kg, oz, g, lb oz

Chapter 1
2
ELECTRICAL
Power Requirement
350 Zinc Die Cast Enclosure
Input (J4): 12 – 26VAC / 12 – 36 VDC
One of four wall mount transformers supplied:
North American:
Input: 120VAC, 30W, 60 Hz
Output: 20VAC, 800mA
United Kingdom / Ireland:
Input: 230VAC, 28W, 50 Hz
Output: 20VAC, 800mA
Continental Europe:
Input: 230VAC, 28W, 50 Hz
Output: 20VAC, 800mA
IEC 320: (table top transformer with IEC 320 receptacle)
Input: 230VAC, 28W, 50 Hz
Output: 20VAC, 800mA
350/355 Stainless Steel Enclosure
Input (J10): 85 – 265VAC, 0.5A; 50/60 Hz (internal power supply version)
Input (J3): 10 – 36VDC, minimum 0.8A w/no options or 1.25A w/options installed (internal power supply
version)
Excitation Voltage 10 VDC
Excitation Current 180 mA max. / (6) 350Ωbridge
F.S. Signal Input 0.1 mV/V min – 20 mV/V max
Signal Connection 4 lead or 6 lead with sense
PROCESS CONTROL
Outputs See OPTIONS
Remote Input 1 momentary contact closure (100ms minimum)
TARE, PRINT, ZERO
COMMUNICATIONS
Serial RS232 bi-directional serial port
Data Output 16 selectable fixed-format transmissions or
2 custom formats (programmable via RS232)
Protocol Selectable
Baud Rate 150 – 115200 bps
DISPLAY
LED 6-digit weight display, 0.8” (22mm) height
11 LED annunciators for operational status
LCD 6-digit weight display, 1.0” (25.4mm) height
12 LCD annunciators for operational status
Built in LCD status bargraph
KEYPAD
350 Five key, durable elastomeric (rubber)
355 22 key, full numeric, durable elastomeric (rubber)
ENCLOSURE
Zinc Die Cast Black powder coat paint, self-standing on flat surface
Wall/Ceiling Mount Optional stainless steel swivel bracket

350/355 Technical Reference
3
Shipping Weight 7 lb (3 kg)
Stainless Washdown stainless steel enclosure w/stainless steel swivel bracket (table,
wall or ceiling mount)
OPTIONS
Analog Output Module 0–10 VDC/5mA, 0–20mA/10V, 4–20mA/10V, electrically isolated, 16 bit
resolution with up to 10 updates per second response time, mounts internal
to enclosure
Relay Output Module Three (3) solid-state 24–280 VAC, 1A with up to 10 updates per second
response time, mounts internal to enclosure or three (3) 3– 60 VDC, 2A
Wall Mount Kit Swivel bracket/stand for zinc die cast enclosure
Panel Mount Kit Mounts zinc die cast enclosure to user panel
Cutout: 7.33” – 7.45”w x 5.25” – 5.37”h x 2.25”d
186.2 – 189.2mm x 133.4 – 136.4mm x 57.2mm
Two Option Mount Kit Mounts up to two option boards inside the stainless enclosure
Battery Power Supply Kits Two versions: one mounts inside the stainless steel enclosure, the other
mounts inside the die cast enclosure
Splash Shield Durable adhesive plastic that adheres to the front surface of the stainless
steel enclosure model
20 mA Current Loop Enables the communication port to be a digital 20 mA current loop port.
Fiber Optic Transceiver Model 350/355 stainless steel, installs in the safe area and connects to a
Model 350/355. Allows setpoints and/or analog output options.
Communicates with hazardous area indicator via fiber-optic cable.
Display
The Model 350 and Model 355 indicators are available with either a six digit, 7-segment green LED display,
a six digit, 7-segment black LCD display or a 7-segment backlit LCD display. The Model 350 and Model 355
will display alphanumeric data, but due to the nature of 7-segment LEDs/LCD and the limitation of six digits,
some information is abbreviated.
All segments and annunciators are illuminated for a brief display test upon power up. The current gross
weight is then displayed in default units.
LED DISPLAY
The LED display is a six digit, 7-segment bright green LED screen with 12 annunciators to show
weight and status information. The SP1, SP2, and SP3 annunciators are red, green, and yellow. Also
there is an annunciator for a third unit under kg. Place the third unit label above the third annunciator
(the third unit is available on both the LED and LCD displays). See page 53 for third unit setup.
Figure 1: Model 350/355 LED Display

Chapter 1
4
LCD DISPLAY
The LCD display is a six digit, 7-segment black LCD screen with 12 annunciators and a bargraph to show
the operational status.
Figure 2: Model 350/355 LCD Display
ANNUNCIATORS
Annunciators provide mode and status information. When illuminated, they indicate the following conditions:
SP1 Setpoint #1 activated (relay 1 closed).
SP2 Setpoint #2 activated (relay 2 closed).
SP3 Setpoint #3 activated (relay 3 closed).
¼0»Displayed weight is at center-of-zero (±¼ display graduation).
MOTION Scale is in motion. Motion inhibited transmits and motion inhibited setpoint activation will
be delayed until motion ceases.
GROSS Displayed value represents the current gross weight.
NET Displayed value represents the current net weight.
QTY Displayed value represents the current piece quantity (Count)
lb The displayed value is represented in pounds.
kg The displayed value is represented in kilograms.
Oz, lb oz, g The displayed value is represented in either ounces, pound ounces or grams.
Lo Illuminates when the battery reaches a low tolerance. LCD only
350 Keypad
The Model 350 offers a sealed 5-button elastomer keypad is used for operator input. Each key is assigned
two distinct functions. Various key combinations are also used. Each key has secondary functions; allowing
an operator to enter target values, perform piece samples, access setup parameters, etc.
A
Figure 3: Model 350 Keypad

5
The Model 350 keypad performs different functions in the Weigh Mode, the Setup Mode, and the Calibration
Mode. Secondary functions for each key allow you to perform additional tasks.
Key Press Weigh Mode Count Mode Setup Mode

Performs a gross zero function
and/or clears an entry in progress.
Hold this key on power-up to
turn on the display regardless
of P420.
Performs a quantity zero
function and/or clears an entry
in progress.
Exits the Setup Mode and/or
answers “NO” to query prompts
and/or clears an entry in progress.
Performs a print function and/or
‘scrolls’ through digits during
setpoint entry.
Performs a print function
and/or ‘scrolls’ through digits
during setpoint entry.
‘Scrolls’ through digits during
data entry.
2Toggles between ‘lb’ and ‘kg’
and/or advances cursor to next
entry position.
Toggles through standard
sample sizes and/or begins a
new sample entry.
Advances cursor to next entry
position and/or cycles prompts.
1Performs an auto-tare function (if
enabled) and/or accepts an entry
in progress.
Performs an auto-tare function
and requests a piece sample
and/or accepts an entry in
progress.
Accepts an entry in progress
and/or ‘scrolls’ through
parameter sub-set selections
and/or answers ‘YES’ to query
prompts.

Toggles between display modes
and/or restores power to the
indicator (if auto-shutoff
enabled).
Toggles between display modes
and/or restores power to the
indicator (if auto-shutoff
enabled).
Advances to the next setup
parameter.
+ Access Setup Mode. Hold these
keys on power-up to bypass the
remote display mode.
Access Setup Mode. No function.
1+ No function. No function. Return to the previous setup
parameter.
+ 1Absolute clear – clears an entry in
progress and/or clears the value of
a parameter.
No function. Clears any entry in progress.
+ Backspace – erases the right-most
digit during data entry.
Backspace – erases the right-
most digit during sample entry.
Backspace – erases right-most
digit during data entry.
+ Extended gross. Extended gross. No function.
2+ 1Turn off indicator by holding key
for approximately 1 second.
Turn off indicator by holding
key for approximately 1
second.
Turn off indicator by holding key
for approximately 1 second.
+ 2Reverse character scroll during
data entry.
Reverse character scroll during
sample entry.
Reverse character scroll during
data entry.

Chapter 1
6
123
CLR
NO
PRINT
STOP
START
TARGET
TARE
ZERO
ENTER
YES 0
SAMPLE
UNITS
SELECT
78
45
9
6
355 Keypad
The Model 355 keypad performs different functions in the Weigh Mode, the Setup Mode, and the Calibration
Mode. The number keys make entering a tare value or average piece weight easier.
Figure 4: Model 355 Keypad
Key Press Weigh Mode Count Mode Setup Mode
"Performs a gross zero function
and/or clears an entry in progress.
Performs a quantity zero function
and/or clears an entry in progress.
Exits the Setup Mode and/or
answers “NO” to query prompts
and/or clears an entry in
progress.
Performs a print function and/or
‘scrolls’ through digits during
setpoint entry.
Performs a print function and/or
‘scrolls’ through digits during
setpoint entry.
‘Scrolls’ through digits during
data entry.
2Toggles between ‘lb’ and ‘kg’
and/or advances cursor to next
entry position.
Toggles through standard sample
sizes and/or begins a new sample
entry.
Advances cursor to next entry
position and/or cycles prompts.
#
Performs an auto-tare function (if
enabled) and/or accepts an entry
in progress. If the tare weight is
known, key in the value and press
#.
Performs an auto-tare function
and/or accepts an entry in
progress.
Accepts an entry in progress
and/or ‘scrolls’ through
parameter sub-set selections
and/or answers ‘YES’ to query
prompts.
!
Toggles between display modes
and/or restores power to the
indicator (if auto-shutoff
enabled).
Toggles between display modes
and/or restores power to the
indicator (if auto-shutoff
enabled).
Advances to the next setup
parameter.
(
Performs a sample. If a number is
keyed in before hand, it will be
used as the sample size. Accepts
an entry.
Performs a sample. If a number is
keyed in before hand, it will be
used as the sample size.
Accepts an entry.
Clears an entry in progress. Hold
this key on power-up to turn on
the display regardless of P420.
Performs a quantity zero function
and/or clears an entry in progress.
Exits the Setup Mode and/or
answers “NO” to query prompts
and/or clears an entry in
progress.
&
If setpoints are enabled, causes a
process to start or resume. See
parameter 5003 on page 58 for
details on enabling the START
function.
If setpoints are enabled, causes a
process to start or resume. See
parameter 5003 on page 58 for
details on enabling the START
function.
No function

7
Key Press Weigh Mode Count Mode Setup Mode
%
If setpoints are enabled, causes a
pause. Press %again to abort
the process. See parameter 5002
on page 58 for details on enabling
the STOP function.
If setpoints are enabled, causes a
pause. Press %again to abort
the process. See parameter 5002
on page 58 for details on enabling
the STOP function.
No function
$
Wake up the indicator if in sleep
mode. Turn on the indicator if
power is off. Access the target
entry mode. See parameter 5000
on page 58 for details on enabling
the TARGET function.
Wake up the indicator if in sleep
mode. Turn on the indicator if
power is off. Access the target
entry mode. See parameter 5000
on page 58 for details on enabling
the TARGET function.
No function
+ 
Access Local Setup Mode. Hold
these keys on power-up to
bypass the remote display
mode.
Access Local Setup Mode. No function
When the Model 355 keypad is installed with a new main board, the keypad must be initialized.
Hold down the (key while power is applied. If the keypad was enabled, the display will show
“EntHld”. To reestablish the keypad as a Model 350, hold down the 1key of the 350 keypad
while power is applied by pressing the key.
WEIGH MODE FUNCTIONS
The Model 350 and Model 355 keypads have five primary Weigh Mode functions:
"Performs a gross zero and selects the gross mode
Initiates data transmission out the communication port
2Toggles the units of measure between lb, kg, g, lb oz, oz
#Tares any displayed weight and selects the net mode
!Toggles the display between GROSS, NET, QUANTITY and setpoint TARGETS (if enabled)

Chapter 1
8
ENTERING A TARE VALUE (MODEL 350)
If a tare value is known, it is possible to enter that value into the tare register. Follow the steps below. P167
must be enabled to use this feature.
1. From the gross or net mode press the key until tare is displayed.
2. Use the
key to scroll in the first number.
3. Press the
2key to move to the next digit.
4. Repeat steps 2 and 3 until the desired number is showing on the display.
5. Press the
1key to accept the entered tare value.
ENTERING A TARE VALUE (MODEL 355)
If a tare value is known, it is possible to enter that value into the tare register. Follow the step below. P167
must be enabled to use this feature. Key in the known tare value and press #. The display will access
the net mode.
If the indicator is being installed in a legal for trade application, refer to Chapter 6 on page 123 for
details on the tare feature.

350/355 Technical Reference
9
7.33” – 7.45”
(
186.2 – 189.2mm
)
5.25” – 5.37”
(
133.4 – 136.4mm
)
PANEL
CUTOUT
CHAPTER 2: INDICATOR INSTALLATION
This chapter contains information necessary for proper installation of the Model 350 and Model 355. Please
review these instructions before installing the indicator.
High voltages may exist within the enclosure. To prevent the risk of electrical shock, ALWAYS unplug the
Model 350/355 when opening the enclosure. Installation and servicing of the Model 350/355 should be
performed only by authorized and qualified service personnel.
For information on installing options, see Chapter 3: Option Installation. For NTEP and OIML details, see
Chapter 6: Legal-for-Trade.
IMPORTANT! The 350 Series indicators do not include an on/off switch and therefore must be
installed near a power outlet socket that is easily accessible and in keeping with UL/CSA Safety
Standards.
INFORMATION IMPORTANT! Prendre note que les contrôleurs de serie 350 ne sont pas munis
d'interrupteurs "Marche / Arrêt". Par conséquent, il devront être installés près d'une source
d'alimentation secteur accessible pour demeurer sous les exigences des normes de sécurité
UL/CSA.
Mounting
The standard Model 350 zinc die cast enclosure is a NEMA1 (IP 20) equivalent. The Model 350/355
stainless steel enclosure meets NEMA 4X type specifications.
When choosing a mounting location for the Model 350 die cast, ensure that the unit is not installed in a
washdown area or conductive dust environment.
DESKTOP MOUNTING
The stainless steel enclosure is designed for desktop mounting. The 350 die cast may be installed as a
desktop unit with the optional mounting bracket 24350B-301C0 (refer to Figure 5 for installation details).
When set on a flat surface, the front face is angled for easy viewing. All wiring enters from the rear and can
be secured with the included screw mounted cable ties.
PANEL MOUNTING (DIE CAST ONLY)
The optional panel mount kit allows for the zinc die cast enclosure to be installed in a user panel. The panel
mount kit is only available in die cast not in stainless steel. Allow for 2.00” (57.2mm) depth behind the panel
surface. See Panel Mount Kit on page 18 for more details.

Chapter 2
10
PERMANENT MOUNTING
The optional mounting bracket allows the zinc die cast enclosure to be securely fastened to another surface.
The bracket is attached to the indicator with two thumbscrews and can be swiveled to an optimal viewing
angle.
OUTLINE DRAWINGS
Figure 6: Model 350 Zinc Die Cast Dimensions
Figure 5: Model 350 Zinc Die Cast with Optional Mounting Bracket