1.2 Overview of Parts and Controls ................................................................................................................... EN-6
1.3 Control Functions ..................................................................................................................................... EN-10
3.1 Menu Structure ........................................................................................................................................EN-14
3.2 Menu Navigation .....................................................................................................................................EN-15
3.3 Calibration Menu .....................................................................................................................................EN-15
3.3.1 Zero Calibration ............................................................................................................................EN-16
3.3.4 Calibration Test ............................................................................................................................EN-18
3.3.6 End Calibration .............................................................................................................................EN-18
3.4 Setup Menu ............................................................................................................................................. EN-20
3.4.2 Range ......................................................................................................................................... EN-20
3.4.5 Power On Unit ..............................................................................................................................EN-21
3.4.6 Zero Range ..................................................................................................................................EN-21
3.4.7
3.4.8 Retain Weight Data .......................................................................................................................EN-22
3.4.9 Legal for Trade .............................................................................................................................EN-22
3.4.11 Beeper Signal ...............................................................................................................................EN-23
3.4.13 End Setup ....................................................................................................................................EN-23
3.5 Readout Menu .........................................................................................................................................EN-23
3.5.2 Stable Range ................................................................................................................................EN-24
3.5.6 Auto Off Timer ..............................................................................................................................EN-25
3.5.8 End Readout .................................................................................................................................EN-25
3.6 Mode Menu ............................................................................................................................................. EN-25
3.6.8 End Mode ....................................................................................................................................EN-27
3.7 Unit Menu ...............................................................................................................................................EN-27
3.7.2 Kilogram Unit ...............................................................................................................................EN-27
3.7.3 Pound Unit ...................................................................................................................................EN-27
3.7.4 Gram Unit ....................................................................................................................................EN-28
3.7.5 Ounce Unit ...................................................................................................................................EN-28
3.7.6 Pound Ounce Unit .........................................................................................................................EN-28
3.7.7 Tonnes Unit ..................................................................................................................................EN-28
3.7.8 Custom Unit .................................................................................................................................EN-28
3.7.9 End Unit ......................................................................................................................................EN-29
3.8 GMP Menu .............................................................................................................................................. EN-29
3.8.2 Date Type ....................................................................................................................................EN-29
3.8.3 Date Set .......................................................................................................................................EN-30
3.8.4 Time Type ....................................................................................................................................EN-30
3.8.5 Time Set ......................................................................................................................................EN-30
3.8.6 User ID ........................................................................................................................................EN-31
3.8.7 Project ID .....................................................................................................................................EN-31
3.8.8 Scale ID .......................................................................................................................................EN-31
3.8.7 End GMP .....................................................................................................................................EN-31
3.9 Print1 and Print2 Menus ........................................................................................................................... EN-32
3.9.1 Reset .....
3.9.2 Print Stable data Only ....................................................................................................................EN-32
3.9.3 Auto Print .....................................................................................................................................EN-32
3.9.7 List Menu Settings .........................................................................................................................EN-35
3.9.8 End Print1 or End Print2 ................................................................................................................EN-35
3.10 COM1 and COM2 Menus ......................................................................................................................... EN-35
3.10.4 Stop Bit ........................................................................................................................................EN-36
3.10.8 End COM1 or End COM2 ............................................................................................................... EN-37
3.11 I-O Menu ................................................................................................................................................EN-37
3.11.5 End I-O ........................................................................................................................................EN-39
3.12 Menu Lock Menu ...................................................................................................................................EN-39
3.12.6 Lock Unit .....................................................................................................................................EN-40
3.12.13 End Lock ...................................................................................................................................EN-41
3.13 Key Lock Menu .......................................................................................................................................EN-41
3.13.2 Lock All Buttons ............................................................................................................................EN-41
3.13.3 Lock Off Button .............................................................................................................................EN-41
3.13.4 Lock Zero Button ...........................................................................................................................EN-41
3.13.6 Lock Unit Button ...........................................................................................................................EN-42
3.13.7 Lock Function Button .....................................................................................................................EN-42
3.13.10 Lock Menu Button .......................................................................................................................EN-42
3.13.11 End Lock ...................................................................................................................................EN-42
4.2 Zero Operation ......................................................................................................................................... EN-43
4.6 Changing Units of Measure ....................................................................................................................... EN-44
4.7 Printing Data ...........................................................................................................................................EN-44
4.8.2 Parts Counting .............................................................................................................................EN-44
5. SERIAL COMMUNICATION ..........................................................................................................................EN-48
5.2 Output Format .........................................................................................................................................EN-49
7.1 Model T51P Cleaning ............................................................................................................................... EN-53
7.2 Model T51XW Cleaning ............................................................................................................................EN-53
7.4 Service Information ..................................................................................................................................EN-54
8. TECHNICAL DATA .....................................................................................................................................EN-55
8.2 Accessories and Options ...........................................................................................................................EN-56
8.3 Drawings and Dimensions ........................................................................................................................ EN-57
This manual contains installation, operation and maintenance instructions for the T51P and T51XW Indicators. Please read this
manual completely before installation and operation.
1.1 Safety Precautions
For safe and dependable operation of this equipment, please comply with the following safety precautions:
• Verify that the input voltage range printed on the data label matches the local AC power to be used.
• Make sure that the power cord does not pose a potential obstacle or tripping hazard.
• Use only approved accessories and peripherals.
• Operate the equipment only under ambient conditions specified in these instructions.
• Disconnect the equipment from the power supply when cleaning.
• Do not operate the equipment in hazardous or unstable environments.
• Do not immerse the equipment in water or other liquids.
• Service should only be performed by authorized personnel.
• The T51XW is supplied with a grounded power cable. Use only with a compatible grounded power outlet.
1.1.1 Relay Option Safety Precautions
This equipment may have an optional AC or DC Relay Option board installed. This option allows external devices to be
controlled by the Indicator.
CAUTION: ELECTRICAL SHOCK HAZARD. REMOVE ALL POWER CONNECTIONS TO THE INDICATOR
BEFORE SERVICING OR MAKING INTERNAL CONNECTIONS. THE HOUSING SHOULD ONLY BE OPENED BY
AUTHORIZED AND QUALIFIED PERSONNEL, SUCH AS AN ELECTRICAL TECHNICIAN.
Before making connections to the Relay terminals, remove power from the system. If the system contains an optional
rechargeable battery system, be sure that the ON/ZERO Off button is used to fully turn off the system after removing the AC power
plug.
More detailed installation instructions are included with the Relay Option Kit when purchased.
EN-65000 Series Indicators
1.2 Overview of Parts and Controls
TABLE 1-1. T51P PARTS.
2
3
4
1
5
6
7
8
9
10
ItemDescription
1Data Label
2Front Housing
3Control Panel
4Adjusting Knob (2)
5Mounting Bracket
6Security Screw
7Data Label
8Rear Housing
9Battery Cover
10Screw (4)
11Power Receptacle
12Hole plug for option
13Strain relief for alternate
load cell connection
14Load Cell Connector
15Hole plug for option
16RS232 Connector
121416111315
Figure 1-1. T51P Indicator.
1.2 Overview of Parts and Controls (Cont.)
EN-75000 Series Indicators
1
2
3
4
5
6
7
TABLE 1-2. T51XW PARTS.
ItemDescription
1Data Label
2Front Housing
3Control Panel
4Adjusting Knob (2)
5Mounting Bracket
6Screw (4)
7Rear housing
8Data Label
9Security Screw
10Strain relief for option
11Strain relief for RS232
12Strain relief for option
13Strain relief for option
14Strain relief for Load Cell
Cable
15Power cord
101113 141215
Figure 1-2. T51XW Indicator.
8
9
EN-85000 Series Indicators
1.2 Overview of Parts and Controls (Cont.)
/./&&
123456
Figure 1-3. Main PC Board.
TABLE 1-3. MAIN PC BOARD.
ItemDescription
1Sense Jumper W1
2Alternate Load Cell Terminal Block J4
3Sense Jumper W2
4Security Switch SW2
5External input Terminal Block J9
6RS232 Terminal Block J7 (T51XW only)
7Load Cell Connector (T51P only)
7
1.2 Overview of Parts and Controls (Cont.)
EN-95000 Series Indicators
27
26
25
24
23
22
21
20
1
2
3
Figure 1-4. Controls and Indicators.
4
5 6
16
7
9
8
1112131415171819
10
TABLE 1-4. CONTROL PANEL.
No.Designation
1UNDER LED
2ACCEPT LED
3OVER LED
4Capacity Label Window
5Brackets (not used)
6Kilogram, gram symbols
7Scale symbol (not used)
8Range symbol
9Percent symbol
10Pound, Ounce, Pound:ounce symbols
11Tonne symbol
12Battery charge symbol
13Custom unit symbol
14Dynamic symbol
No.Designation
15TARE
16Pieces symbol
17FUNCTION
18PRINT
19ON/ZERO
20Pointer symbols (not used)
21Brutto, Gross symbols
22Preset Tare, Tare symbols
23Stable weight Indicator
24Negative symbol
25Center of Zero Indicator
26NET symbol
277-segment Display
Menu
Units
Off
button
Mode
button
button
button
EN-105000 Series Indicators
1.3 Control Functions
TABLE 1-5. CONTROL FUNCTIONS.
Button
Primary Function
(Short Press)
Secondary Function
(Long Press)
Menu Function
(Short Press)
ON/ZERO
Turns the Indicator
on.
If Indicator is On, sets
zero.
Off
Turns the Indicator off.
Yes
Accepts the current
setting on the display.
PRINT
Sends the current value
to the selected COM
ports if AUTOPRINT is
set to Off.
Units
Changes the weighing
Unit.
No
Advances to the next
menu or menu item.
Rejects the current
setting on the display
and advances to the
next available setting.
Increments the value.
FUNCTION
Initiates an application
mode.
Temporarily displays the
active mode’s reference
data.
In Weigh mode,
temporarily displays 10x
expanded resolution.
Mode
Allows changing the
application mode.
Press and hold allows
scrolling through modes.
Back
Moves Back to previous
menu item.
Decrements the value.
TARE
Performs a tare
operation.
Menu
Enter the User menu.
Exit
Exits the User menu.
Aborts the calibration in
progress.
EN-115000 Series Indicators
2. INSTALLATION
2.1 Unpacking
Unpack the following items:
• T51P or T51XW Indicator
• AC Power Cord (T51P only)
• Mounting Bracket
• Knobs (2)
2.2 External Connections
2.2.1 Scale Base with Connector to T51P
Ohaus bases with a connector can be attached to the external load cell connector (Figure 1-1, item 14). Refer to section 2.3.2
for bases without a connector. To make the connection, plug the base connector onto the external load cell connector. Then
rotate the base connector’s locking ring clockwise.
For connecting bases with a connector to a T51XW (which does not have the external connector), a Load Cell Cable Adapter
Kit p/n 80500736 is available as an accessory. This kit connects to the terminal block inside the T51XW and has an external
connector on the other end.
• Capacity Label Sheet
• LFT Sealing kit
• Instruction Manual CD
• Warranty Card
2.2.2 RS232 interface Cable to T51P
Connect the optional RS232 cable to the RS232 connector (Figure 1-1, item 16).
2
4
5
Figure 2-1. RS232 Pins.
3
9
1
78
6
PinConnection
1N/C
2TXD
3RXD
4N/C
5GND
6N/C
7CTS
8RTS
9N/C
2.2.3 AC Power to T51P
Connect the AC power cord (supplied) to the power receptacle (Figure 1-1, item 11), then connect the AC plug to an electrical
outlet.
2.2.4 AC Power to T51XW
Connect the AC plug to a properly grounded electrical outlet.
2.2.5 Battery Power to T51P
The indicator can be operated on alkaline batteries (not supplied) when AC power is not available. It will automatically switch
to battery operation if there is power failure or the power cord is removed. The indicator can operate for up to 80 hours on
battery power.
Remove the battery cover (Figure 1-1, item 9) and install 6 C-type (LR14)
alkaline batteries in the orientation specified. Re-install the battery cover.
During battery operation, the battery charge symbol indicates the battery status.
The indicator will automatically turn-off when the batteries are fully discharged.
EN-125000 Series Indicators
2.2.6 Mounting Bracket
Position the wall bracket over the threaded holes in the side of the indicator as shown in Figures 8-1 or 8-2 and install the
knobs. Adjust the indicator to the desired angle and tighten the knobs.
2.3 Internal Connections
Some connections require the housing to be opened.
2.3.1 Opening the Housing
CAUTION: ELECTRICAL SHOCK HAZARD. REMOVE ALL POWER CONNECTIONS TO THE INDICATOR
BEFORE SERVICING OR MAKING INTERNAL CONNECTIONS. THE HOUSING SHOULD ONLY BE OPENED
BY AUTHORIZED AND QUALIFIED PERSONNEL, SUCH AS AN ELECTRICAL TECHNICIAN.
T51P
Remove the four Phillips head screws from the rear housing.
Remove the front housing being careful not to disturb the internal connections.
Once all connections are made, reattach the front housing.
T51XW
Remove the four hex head screws from the rear housing.
Open the housing by carefully pulling the front housing forward.
Once all connections are made, reattach the front housing.
The screws should be tightened to 2.5 N•m (20-25 in-lb) torque to ensure a watertight seal.
2.3.2 Scale Base Without Connector to T51P or T51XW
Bases without a connector must be attached to the internal load cell connector on the main
PC board. Pass the load cell cable through the strain relief (Figure 1-1, item 13 or Figure 1-2,
item 13) and attach it to terminal block J4 (Figure 1-3, item 2). Tighten the strain relief to
maintain a watertight seal.
Jumper Connections
For a 4-wire load cell with no sense wires: Jumpers W1 and W2 must be left in place shorting
the two pins.
For a 6-wire load cell that includes sense wires, Jumpers W1 and W2 must be removed.
For load cells with an extra ground shield wire: Connect the shield to the center position (GND)
of J4.
PinConnection
J4-1+EXE
J4-2+SEN
J4-3+SIG
J4-4GND
J4-5-SIG
J4-6-SEN
J4-7-EXE
Figure 2-2. Jumper Connections.
After wiring is completed and jumpers are in place, replace the indicator housing screws. Make sure the liquid-tight connector is
properly tightened.
EN-135000 Series Indicators
2.3.3 RS232 Interface Cable to T51XW
Pass the optional RS232 cable through the strain relief (Figure 1-2, item 10) and attach it to
terminal block J7 (Figure 1-3, item 6). Tighten the strain relief to maintain a watertight seal.
2.3.4 Footswitch to T51P or T51XW
Pass the optional footswitch cable through the strain relief (Figure 1-1, item 15 or Figure 1-2, item 11) and attach it to terminal
block J9 (Figure 1-3, item 5).
PinConnection
J7-1RTS
J7-2TXD
J7-3RXD
J7-4CTS
J7-5GND
2.4 T51P Rear Housing Orientation
The T51P is delivered in the wall mount orientation with the connections exiting below the display. The rear housing may be
reversed so the connections exit above the display when the T51P is placed horizontally on a bench. To reverse the rear housing,
remove the four Phillips head screws, carefully rotate the housing 180°, and reinstall the screws.
Figure 2-3. Wall Mount Configuration.Figure 2-4. Bench Top Configuration.
2.5 Mounting Bracket
Attach the bracket to a wall or table using fasteners (not supplied) that are appropriate for the type of mounting surface. The
bracket will accommodate up to 6 mm (1/4”) diameter screws. Locate the mounting holes as shown in Figure 2-5.
Figure 2-5 Mounting Bracket Dimensions.
EN-145000 Series Indicators
3. SETTINGS
3.1 Menu Structure
TABLE 3-1. MENU STRUCTURE.
CALIBRATIONSETUP
1)
• ZERO
• SPAN
1)
• RESET• RESET• RESET• RESET• RESET• RESET
• RANGE
2)
• LINEARITY 1)• CAPACITY
• CAL TEST• GRADUATION
• GEO
1)
• POWER ON UNIT 2)• BACKLIGHT• DYNAMIC
• END CAL• ZERO RANGE
• AUTO TARE
• RETAIN WEIGHT
• LEGAL FOR TRADE• END UNIT• PROJECT ID • HEADER
• BEEPER VOLUME• SCALE ID • USER ID
• BEEPER SIGNAL• END GMP • PROJECT ID
• BUTTON BEEPER • SCALE ID
• END SETUP • DIFFERENCE
READOUT
• STABLE RANGE
2)
2)
• FILTER• COUNT
2)
• AUTO ZERO
2)
• AUTO OFF TIMER• CHECK WEIGH 2)• POUND OUNCE 2) • TIME TYPE • GROSS
• GROSS INDICATOR• END MODE• TONNE
2)
• END READOUT• CUSTOM
MODE
2)
• WEIGH
2)
• PERCENT
2)
2)
UNIT
• KILOGRAM
2)
2)
• GRAM
• OUNCE
• POUND
2)
2)
2)
2)
GMP
2)
• DATE• STABLE ONLY
PRINT1
2)
• DATE TYPE• AUTO PRINT
• DATE SET• CONTENT
• TIME • RESULT
• TIME SET • NET
2)
• USER ID • TARE
• DATE TIME
• INFO
• MODE
• NAME
• LAYOUT
• FORMAT
• FEED
• LIST
• END PRINT1
PRINT2
COM1
COM2
I-O
LOCK MENU
LOCK KEY
• RESET• RESET• RESET• RESET• RESET• RESET
2)
• STABLE ONLY
• BAUD• BAUD• EXT. INPUT• LOCK CAL• LOCK ALL
• AUTO PRINT• PARITY• PARITY• INPUT BEEP• LOCK SETUP• LOCK OFF
• HEADER • ZERO • TARE• END I-O• LOCK COM1• LOCK TARE
• USER ID• END COM1 • ZERO• LOCK COM2• LOCK MENU
• PROJECT ID• END COM2• LOCK GMP• END LOCK KEY
• SCALE ID• LOCK I/O
• DIFFERENCE• END LOCK MENU
• DATE TIME
• INFO
• MODE
• NAME
• LAYOUT
• FORMAT
• FEED
• LIST
• END PRINT2
Notes:
1) Hidden when LEGAL FOR TRADE is ON.
2) Locked at current setting when LEGAL FOR TRADE is ON.
3) Visible only with RS485/RS422 option installed.
END
3.2 Menu Navigation
Enter the
the Legal for Trade status is displayed, followed by the first menu. Press the No or Back button to move to a
different menu. Press the Yes button to enter the menu. Once in the menu, press the Yes button to view the
menu item setting or press the No or Back button to move to the next menu item. When viewing the setting,
press the Yes button to accept the setting, or press the No or Back button to change the setting. Once all
settings have been made, press the Exit button to return to the current application mode.
For menu items with numeric settings such as Capacity, the current setting is displayed with all digits flashing.
Press the No button to begin editing.
The first digit is displayed flashing.
Press the No button to increment the digit or press the Yes button to accept the digit and move to the next digit.
Repeat this process for all digits.
Press the Yes button when the last digit has been set.
menu by pressing the TARE
Menu
button until MENU is displayed. When the button is released,
EN-155000 Series Indicators
The new setting is displayed with all digits flashing. Press the Yes button to accept the setting or press the No
button to resume editing.
This method also applies to setting Checkweigh under and over targets.
For End menu items, pressing the Yes button advances to the next menu, while pressing the No button returns
to the top of the current menu.
3.3 Calibration Menu
When CAL is displayed, press the Yes button to accept the Calibration menu
selection. Press the No button to advance to the desired calibration menu item.
Three calibration processes are available: Zero Calibration, Span Calibration and
Linearity Calibration. Default settings are bold.
NOTES:
1. Make sure that appropriate calibration masses are available before
beginning calibration.
2. Make sure that the scale base is level and stable during the entire
calibration process.
3. Calibration is unavailable with LFT set to ON.
4. Allow the Indicator to warm up for approximately 5 minutes after
stabilizing to room temperature.
5. To abort calibration, press the Exit button anytime during the calibration
process.
6. When any selection within the GMP menu is enabled, calibration results
are automatically printed.
Zero Perform
Span Perform
Linearity Perform
Cal Test Perform
Geographic
Adjustment Set 00…Set 12…Set 31
End Calibration Exit CALIBRATE menu
EN-165000 Series Indicators
3.3.1 Zero Calibration
Zero calibration uses one calibration point. The zero calibration point is established with no weight on the
scale. Use this calibration method to adjust for a different pre-load without affecting the span or linearity
calibration. When ZErO is displayed, press the Yes button to initiate Zero Calibration.
The display flashes 0 and the calibration unit. Press the Yes button to establish the zero point.
The display shows --C-- while the zero point is established.
When zero calibration is completed, the display shows dONE.
Then the scale exits to the active weighing mode and displays the actual weight value.
3.3.2 Span Calibration
Span Calibration uses two points to adjust the scale. The span calibration point is established with a
calibration mass placed on the scale. The zero calibration point is established with no weight on the scale.
When SPAN is displayed, press the Yes button to initiate Span Calibration.
The display flashes the span calibration point. Place the specified weight on the scale and press the Yes
button.
To choose a different span point or calibration unit, edit the setting as explained in Section 3.2 Menu
Navigation. When the desired setting is displayed, place the specified weight on the scale and press the Yes
button.
The display shows --C-- while the span point is established.
The display flashes 0.
With no weight on the scale, press the Yes button to establish the zero point.
The display shows --C-- while the zero point is established.
When span calibration is completed, the display shows dONE.
Then the scale exits to the active weighing mode and displays the actual weight value.
3.3.3 Linearity Calibration
Linearity calibration uses 3 calibration points. The full calibration point is established with a weight on the
scale. The mid calibration point is established with a weight equal to half of the full calibration weight on
the scale. The zero calibration point is established with no weight on the scale. The mid calibration points
cannot be altered by the user during the calibration procedure.
When LINEAr is displayed, press the Yes button to initiate Linearity Calibration.
The display flashes the full calibration point and calibration unit. Place the specified weight on the scale and
press the Yes button.
To choose a different full point or calibration unit (kg or lb), edit the setting as explained in Section 3.2 Menu
Navigation. When the desired setting is displayed, place the specified weight on the scale and press the Yes
button.
The display shows --C-- while the full point is established.
The display flashes the mid calibration point.
EN-175000 Series Indicators
Place the specified weight on the scale and press the Yes button.
The display shows --C-- while the mid point is established.
The display flashes 0.
With no weight on the scale, press the Yes button to establish the zero point.
The display shows --C-- while the zero point is established.
When linearity calibration is completed, the display shows dONE.
Then the scale exits to the active weighing mode and displays the actual weight value.
EN-185000 Series Indicators
3.3.4 Calibration Test
Calibration test is used to compare a known calibration weight against the stored span calibration data.
NOTE: Calibration Test is always available (even when LFT is set to ON).
When tESt is displayed, press the Yes button to initiate Calibration Test.
The display flashes 0. With no weight on the scale, press the Yes button to record the current zero point.
The display shows --t-- while the zero point is recorded.
The display flashes the span calibration weight using the value from the last calibration. The example shows
test weight of 30 kg.
Place the specified test weight on the scale and press the Yes button.
The display shows --t-- while the data is processed.
The display flashes the actual difference between the calibration data and the test weight.
The example shows a 0.010 kg difference. The result of the Calibration Test is printed.
After 5 seconds, Calibration Test ends, the scale returns to the active weighing mode and displays the current
weight.
3.3.5 Geographical Adjustment Factor
Refer to Table 3-2 and set the GEO factor that corresponds to your location.
00 to 31
NOTE: Only an authorized manufacturer’s representative or certified verification personnel may make these
changes. Changing the geographical setting alters the calibration values.
3.3.6 End Calibration
Advance to the next menu.
•
•
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