Kohler CURTIS 3401T User manual

Manual
Read Instructions Carefully!
Specications are subject to change without notice. © 2022 Curtis Instruments, Inc.
® Curtis is a registered trademark of Curtis Instruments, Inc. ® Kohler is a registered trademark of Kohler Co.
© The design and appearance of the products depicted herein are the copyright of Curtis Instruments, Inc. 53249 Rev A August 2022
Curtis Instruments, Inc.
200 Kisco Avenue
Mt. Kisco, NY 10549
www.curtisinstruments.com
» Software Device Profile: 9.0.0.0 «
Model 3401T
Digital Instrumentation

Curtis Model 3401T – August 2022
pg. ii
CHAPTERS
1: OVERVIEW ...................................................................................................................................... 1
USING THIS MANUAL .................................................................................................................... 2
FEATURES .................................................................................................................................... 2
DISPLAY ELEMENTS ............................................................................................................... 2
FAULT CODES AND NAMES ..................................................................................................... 2
PROGRAMMING...................................................................................................................... 3
LCD HEATER........................................................................................................................... 3
MISCELLANEOUS FEATURES................................................................................................... 3
CONVENTIONS.............................................................................................................................. 4
NUMERAL SYSTEM NOTATION ................................................................................................ 4
MISCELLANEOUS CONVENTIONS............................................................................................ 4
2: USING THE 3401T........................................................................................................................... 5
BUTTONS ..................................................................................................................................... 5
POWER-ON 3401T PASSWORD OR ECS AUTHORIZATION .............................................................. 6
POWER-ON 3401T PASSWORD............................................................................................... 6
ECS AUTHORIZATION .............................................................................................................. 8
VIEW FAULT NAMES...................................................................................................................... 9
VIEW AND EDIT PARAMETERS....................................................................................................... 9
OPEN THE 3401T’S MAIN MENU............................................................................................ 10
OPEN THE 3401T’S PARAMETER MENUS ............................................................................... 10
OPEN PARAMETER MENUS FOR OTHER CURTIS DEVICES....................................................... 12
OPEN PARAMETER MENUS OF DEVICES CONNECTED TO THE SERIAL PORT........................... 13
USING THE PARAMETER MENU SCREENS .............................................................................. 14
TABLE OF CONTENTS

Curtis Model 3401T – August 2022 pg. iii
TABLE OF CONTENTS cont’d
PRESET USER INTERFACES — 3401T MODEL ............................................................................. 15
SPEED MODE ........................................................................................................................ 17
SIGNAL ICONS....................................................................................................................... 17
DIRECTION ICONS ................................................................................................................. 18
BDI........................................................................................................................................ 18
SPEEDOMETER...................................................................................................................... 19
HOUR METERS, CARGO WEIGHT AND LIFT HEIGHT................................................................. 19
KEYSWITCH HOUR METER ..................................................................................................... 20
STEERING ANGLE .................................................................................................................. 20
MESSAGE CENTER ................................................................................................................ 20
FAULT CODES........................................................................................................................ 21
3: INSTALLATION AND WIRING ........................................................................................................... 22
INSTALLING THE 3401T ............................................................................................................... 22
I/O CONNECTOR .......................................................................................................................... 23
I/O PINS....................................................................................................................................... 24
WIRING DIAGRAM ........................................................................................................................ 25
OPERATING VOLTAGE ................................................................................................................... 26
OPERATING CURRENT.................................................................................................................. 26
BATTERY CONNECTIONS.............................................................................................................. 27
KEYSWITCH ................................................................................................................................. 27
SWITCH 1–5 INPUTS.................................................................................................................... 27
SWITCH INPUTS .................................................................................................................... 27
FAULT CODE INPUTS.............................................................................................................. 28
SENDER INPUTS.................................................................................................................... 28
MOSFET DRIVER.................................................................................................................... 28
CAN CONNECTIONS..................................................................................................................... 28
SERIAL COMMUNICATION INTERFACE (SCI) .................................................................................. 28

Curtis Model 3401T – August 2022
pg. iv
TABLE OF CONTENTS cont’d
4: PROGRAMMABLE PARAMETERS .................................................................................................... 29
MAIN MENU PARAMETERS........................................................................................................... 31
SET HOURMETERS MENU ............................................................................................................ 32
SET HOURMETERS SUBMENU ............................................................................................... 32
CAN MENU .................................................................................................................................. 33
RPDO AND TPDO BYTE MAP MENUS...................................................................................... 34
BDI MENU.................................................................................................................................... 37
PASSWORD MENU ....................................................................................................................... 38
MAINTENANCE MENU .................................................................................................................. 38
ODOMETERS MENU..................................................................................................................... 39
SENDERS MENU .......................................................................................................................... 39
OUTPUT MENU ............................................................................................................................ 40
RAMP MENU ......................................................................................................................... 40
INITIAL MENU........................................................................................................................ 41
CURRENT LIMIT MENU .......................................................................................................... 41
DITHER MENU ....................................................................................................................... 41
PI MENU................................................................................................................................ 42
MISC MENU................................................................................................................................. 42
5: MONITOR PARAMETERS ................................................................................................................ 43
HOURMETERS MENU ................................................................................................................... 43
MAINTENANCE MENU .................................................................................................................. 44
ODOMETERS MENU..................................................................................................................... 44
SENDERS MENU .......................................................................................................................... 44
OUTPUT MENU ............................................................................................................................ 45

Curtis Model 3401T – August 2022 pg. v
TABLE OF CONTENTS cont’d
6: CANOPEN COMMUNICATIONS........................................................................................................ 46
BYTE AND BIT SEQUENCE ORDER ................................................................................................ 46
NODE IDS .................................................................................................................................... 46
BAUD RATE.................................................................................................................................. 46
MESSAGE COB-IDS...................................................................................................................... 47
EXPEDITED SDOS ........................................................................................................................ 47
PDOS........................................................................................................................................... 48
PDO COB-IDS........................................................................................................................ 48
PDO TIMING .......................................................................................................................... 48
PRECONFIGURED PDOS......................................................................................................... 49
STANDARD CANOPEN OBJECTS................................................................................................... 53
APPENDIX A: CURTIS PROGRAMMING DEVICES .................................................................................. 54
APPENDIX B: SPECIFICATIONS ........................................................................................................... 56

Curtis Model 3401T – August 2022
pg. vi
TABLES
TABLE 2-1 3401T BUTTONS ............................................................................................................... 5
TABLE 2-2 3401T AND CURTIS PROGRAMMING DEVICE ACCESS LEVELS............................................ 9
TABLE 2-3 3401T HOME SCREEN AREAS........................................................................................... 16
TABLE 3-1 MATING CONNECTOR PARTS — IP40 PROTECTION .......................................................... 23
TABLE 3-2 MATING CONNECTOR PARTS — IP54 PROTECTION .......................................................... 23
TABLE 3-3 I/O PINS ........................................................................................................................... 24
TABLE 3-4 OPERATING CURRENT — LCD HEATER OFF...................................................................... 26
TABLE 3-5 OPERATING CURRENT — LCD HEATER ON ....................................................................... 26
TABLE 4-1 PDO BYTE MAP MENUS — CAN INDEXES AND DEFAULT VALUES ...................................... 35
TABLE OF CONTENTS cont’d
FIGURES
FIGURE 1-1 CURTIS MODEL 3401T..................................................................................................... 1
FIGURE 2-1 COUNTERBALANCED FORKLIFTS APPLICATION................................................................ 15
FIGURE 2-2 REACH TRUCKS AND ORDER PICKERS APPLICATION........................................................ 16
FIGURE 2-3 SPEEDOMETER — COUNTERBALANCED FORKLIFTS....................................................... 19
FIGURE 2-4 SPEEDOMETER — REACH TRUCKS AND ORDER PICKERS............................................... 19
FIGURE 3-1 MOUNTING DIMENSIONS ................................................................................................ 22
FIGURE 3-2 WIRING DIAGRAM............................................................................................................ 25

1 — OVERVIEW pg. 1
Return to TOC Curtis Model 3401T – August 2022
1 — OVERVIEW
e Curtis Model 3401T is a congurable HMI that displays vehicle information such as speed,
direction, and state-of-charge. A color 4.3", 480 ×272 pixel TFT LCD allows vehicle operators to
view data in any lighting condition. An LCD heater is optional for operation in cold temperatures.
Vehicle operators use buttons to work with the user interface. e buttons make the 3401T ideal for
gloved operators and for applications that require precise tactile feedback.
e 3401T’s congurability allows various screen elements to be displayed. ese elements include
gauges, hour meters, warning icons, speedometers, and so on.
e device provides two preset user interfaces: one for counterbalanced forklis and the other for
reach trucks and order pickers. For applications that require a tailor-made user interface, the 3401T
is customizable by Curtis engineers.
e 3401T provides four inputs that can be used as switch, analog resistive, analog voltage, and
frequency inputs. Another pin can be used as either a switch input or an output driver. e 3401T
also transmits and receives data over the CANbus.
Figure 1-1
Curtis Model
3401T
F1 F2 F3 F4 F5
H
SE
C
+
+
-
-
E
TRA: OK
HYD: OK
STR: OK
BAT: OK
100 %
P
00102.8H
Mode
10.2 km/h
(MAX 20.0)
N
010.500
m
00122.8 T

1 — OVERVIEW
Curtis Model 3401T – August 2022 Return to TOC
pg. 2
USING THIS MANUAL
e next section describes the 3401T’s features. e following list describes the topics that apply to
various types of tasks:
• Vehicle operators should read the Using the 3401T chapter.
• Technicians who work on installation and wiring, or who need information on specications,
should read the Installation and Wiring chapter and the Specications appendix.
• Application developers should be familiar with the following chapters:
– Programmable Parameters
– Monitor Parameters
– CANopen Communications
FEATURES
e following sections describe the 3401T’s major features.
Display Elements
e following list describes the device’s display elements:
• Gauges represent various types of data. For example, gauges indicate the vehicle speed, BDI
percentage and steering angle.
• Icons indicate states such as on/o. For example, icons indicate whether the seat belt is on or
li lockout is active.
• Hour meters provide a resolution of 0.1 hours and a maximum of 99999.9 hours. ere are
three hour meters: one is for the keyswitch and two are for Curtis devices.
• Speed mode: e 3401T provides buttons for four speed modes. e selected mode is
transmitted over the CANbus.
• e message center broadcasts information such as status and instructions. For example, a
message is displayed if both forward and reverse signals are active.
Fault Codes and Names
e 3401T displays fault codes and names for Curtis devices. ere are a few sources of fault data:
• e precongured RPDOs.
• A switch input for Curtis DC pump controllers such as the 1253 and 1253C models.
• A switch input for Curtis DC traction controllers such as the 1243 and 1244 models.
e corresponding fault names of the fault codes are displayed on the Fault Name screen.

1 — OVERVIEW pg. 3
Return to TOC Curtis Model 3401T – August 2022
Programming
e 3401T can be used to program Curtis devices. You can read and write parameters for the 3401T
and for other Curtis devices that are on the CANbus or connected through the serial port. For more
information, see View and Edit Parameters.
LCD Heater
Some models include an LCD heater for cold temperatures. e LCD heater extends the minimum
operating temperature from −20°C to −40°C.
e model number indicates whether a 3401T model has an LCD heater. See the Model Encodement
section in the Specications appendix.
Miscellaneous Features
e following list describes other major features:
• Designed to meet regulatory requirements. For details, see the Specications appendix.
• Multilingual support.
• CANopen, J1939 and an adjustable baud rate.
• Password protection for the following functions:
– Power on. A power-on password can optionally be specied. e power-on password is
entered with either the 3401T’s buttons or the Curtis Electronic Code Switch (ECS).
– Programming parameters for the 3401T and for other Curtis devices. ere are dierent
passwords for the OEM and User access levels.
– Resetting the hour meters.
• e following optional features are available with customized models only:
– A buzzer alarm that can be congured to activate when gauge elements, statuses or internal
calculations reach specied values.
– A 3-axis accelerometer that senses the vehicle’s inclination and orientation and calculates its
acceleration. e accelerometer measures at least 10G on all three axes.
– A real-time clock that keeps track of time even if power is removed from the unit. e time
is displayed in either the 12-hour or 24-hour format.
To discuss customized models, contact your Curtis distributor or the Curtis sales and support oce
in your region.
Note: For more information on the 3401T’s features, see the data sheet on the Curtis Instruments
CAN & Serial Instrumentation page at https://www.curtisinstruments.com/products/can-serial-
instrumentation-programmable.

1 — OVERVIEW
Curtis Model 3401T – August 2022 Return to TOC
pg. 4
CONVENTIONS
e following topics describe terms and notations used in this manual.
Numeral System Notation
e following table describes how this manual denotes decimal, binary, and hexadecimal numbers.
Note: e letter nin the format column represents a digit.
Numeral System Format Example
Decimal
Either of the following:
• nnn
• nnnd
• 127
• 127d
Hexadecimal
Either of the following:
• nnnh
• 0xnnn
• 62Ah
• 0x62A
Binary nnnb 1011b
In addition, some CANopen examples have hexadecimal values without notation. ose examples
are formatted with a monospace font and with the bytes delimited by spaces, as shown in the
following example:
21 FF 01 11 22 01 00 00
Miscellaneous Conventions
• All voltages listed in this manual are DC voltages.
• RO means read-only.
• RW means read-write.
• N/A means not applicable.

2 — USING THE 3401T pg. 5
Return to TOC Curtis Model 3401T – August 2022
2 — USING THE 3401T
is chapter describes how to use the 3401T’s buttons and screens.
BUTTONS
e following table describes the 3401T’s buttons. e buttons’ functions depend upon which screen
is active.
Table 2-1 3401T Buttons
Button Home Screen Parameter Menu Screens Password Screens
Species the high speed mode. Scrolls up to the previous menu item. Species whether the password is
for the User or OEM access level.
Species the turtle speed mode. Scrolls down to the next menu item. Species whether the password is
for the User or OEM access level.
Species the standard speed mode. Returns to the previous menu.
If the menu is the device’s top menu,
pressing this button returns to the
home screen.
Species whether the password is
for the User or OEM access level.
Species the economy speed mode. If a menu is selected, opens the menu. Species whether the password is
for the User or OEM access level.
Opens the 3401T’s main parameter
menu, which does not require
a password.
Returns to the home screen from the
3401T’s main parameter menu.
Species the number 1.
Opens the 3401T’s password-
protected parameter menus.
Returns to the home screen from
the 3401T’s password-protected
parameter menus.
Species the number 2.
Opens the parameter menus of other
Curtis devices connected through the
CANbus or the serial port.
Returns to the home screen from the
parameter menus of other Curtis devices.
Species the number 3.
Opens the parameter menus of Curtis
devices that support the ESP/SP
protocol and are connected through
the serial port. The menus have read-
only access.
Depends upon how the parameter menu
screens were accessed:
• If accessed with the button,
returns to the home screen.
• If accessed with the or
button, rapidly increases the selected
parameter’s value by step sizes of
10, 100, 1000, and 10,000.
Species the number 4.
No function. No function. Species the number 5.
No function. • When a writable parameter is selected,
decreases the parameter value.
• When a menu is selected, navigates
to the previous menu.
• If password characters have
been entered, clears the
last number.
• If password characters have
not been entered or have
been cleared, returns to the
home screen.
Opens the Fault Name screen.
Note: This button also exits the Fault
Name screen.
• When a writable parameter is selected,
increases the parameter value.
• If a menu is selected, opens the menu.
Submits the password.

2 — USING THE 3401T
Curtis Model 3401T – August 2022 Return to TOC
pg. 6
POWER-ON 3401T PASSWORD OR ECS AUTHORIZATION
e 3401T can be congured so that only authorized users can access the device. ere are two
methods for authorizing access:
• Enter a password on the 3401T keypad.
• Log onto the Curtis Electronic Code Switch (ECS).
Note: e ECS ensures that only authorized users can operate a vehicle. Users log on by entering a
user ID and PIN code or by swiping an RFID tag. For more information on the ECS, see the Input
Devices page on the Curtis Instruments website.
e following topics describe the two methods.
Power-On 3401T Password
If the 3401T is congured to require a password aer the device is powered on, the following screen
is displayed:
1234 5

2 — USING THE 3401T pg. 7
Return to TOC Curtis Model 3401T – August 2022
If this screen is visible, take the following steps:
1. Use the F1–F5 buttons to enter the ve-digit password, which consists of the numbers 1–5.
Pressing an F1–F5 button enters the number that follows the letter “F”: for example, the
button enters 2.
To indicate how many characters have been entered, the corresponding circle in the middle of
the screen turns blue when a button is pushed. In the following example, three numbers have
been entered:
1234 5
Tip: To clear the most recently entered number, press the button; the corresponding circle
turns white.
2. Press the button to submit the password. If the password is correct, the home screen
is displayed.
If the password screen indicates that the wrong password was entered, press the or button
to clear the password, then repeat this procedure.
Note: e default power-on password is 12345. Curtis recommends that you change the default
password. e password is specied with the PIN Code parameter.

2 — USING THE 3401T
Curtis Model 3401T – August 2022 Return to TOC
pg. 8
ECS Authorization
If the 3401T is congured to allow only authorized ECS users to access the device, the following
screen is displayed when a user is not logged onto the ECS:
PLEASE OPERATE VIA ECS!
If this screen is visible, log onto the ECS by swiping an RFID tag or entering an ECS user ID and PIN
code on the keypad. If the RFID tag or user ID and PIN code are valid, the home screen is displayed.
Note: To log on with the ECS, the 3401T and the ECS must be in the operational NMT state and the
ECS’s node ID must be specied. If you are logged onto the ECS but the screen shown in the previous
image is displayed, the devices might not be in the operational state.
Aer you log o the ECS, the 3401T displays the screen shown in the above image.

2 — USING THE 3401T pg. 9
Return to TOC Curtis Model 3401T – August 2022
VIEW FAULT NAMES
e Fault Name screen displays the names and fault codes of active faults. In the following example,
faults are active for traction and pump controllers:
FAULT NAME
TRACTION:
1,2 CONTROLLER OVERCURRENT
HYD:
2,5 +5V SUPPLY FAILURE
Take the following steps to access the Fault Name screen:
1. Go to the home screen.
2. Press the button.
3. If there are too many faults to display on one screen, use the and buttons to scroll
through the screens.
To exit the Fault Name screen, press the button.
VIEW AND EDIT PARAMETERS
e 3401T enables you to view and edit its parameters and the parameters of Curtis devices connected
through the CANbus or the serial port. e 3401T parameters are contained by the menus described
in the Programmable Parameters and Monitor Parameters chapters. e parameter menus can be
accessed when the home screen is visible.
Parameters have two access levels: User and OEM. e OEM level provides access to more parameters
than the User level. e following table describes how the 3401T access levels correspond to the
access levels for Curtis programming devices:
Table 2-2 3401T and Curtis Programming Device Access Levels
3401T Curtis Programming Device
User Field Intermediate
OEM OEM Dealer
A password is required to access the 3401T’s parameter menus and the read-write parameter menus
of other Curtis devices. e access levels have dierent passwords. When you enter a password, the
password is not cleared when the device returns to the home screen; this is for convenience when
testing and debugging parameter changes. Aer you have nished working with parameters, cycle
the keyswitch to clear the password.

2 — USING THE 3401T
Curtis Model 3401T – August 2022 Return to TOC
pg. 10
e following list describes the default passwords for accessing parameter menus:
• User access level: 11111
• OEM access level: 22222
Curtis recommends that you change the default passwords. Passwords are changed with the OEM
Menu Password and USER Menu Password parameters on the Password menu.
e following topics describe how to open and use the screens.
Open the 3401T’s Main Menu
Take the following steps to open the main menu.
1. Go to the home screen.
2. Press the button. e main menu displays and you can now view and edit parameters.
To exit the menu, press the button.
Open the 3401T’s Parameter Menus
You must enter a password to open all of the 3401T’s menus, which include the main menu, Program
menu, and Monitor menu. Take the following steps to open these menus.
1. Go to the home screen.
2. Press the button. e Password screen displays:
1234 5
>>>Enter 3401T Menu Password
OEM
e screen’s active access level is highlighted in blue; in the example above, the User access level
is active.

2 — USING THE 3401T pg. 11
Return to TOC Curtis Model 3401T – August 2022
3. To change the access level, press the , , , or button.
4. Use the F1–F5 buttons to enter the ve-digit password, which consists of the numbers 1–5. Pressing an
F1–F5 button enters the number that follows the letter “F”: for example, the button enters 2.
To indicate how many characters have been entered, the corresponding circle in the middle of the screen
turns blue when a button is pushed. In the following example, two numbers have been entered:
12
3
4 5
>>>Enter 3401T Menu Password
OEM
Tip: To clear the most recently entered number, press the button; the corresponding circle turns
white. To exit the password screen, press the button until the password is cleared, then press the
button again.
5. Press the button to submit the password. If the password is correct, the main menu displays and you
can now view and edit parameters.
If the password screen indicates that the wrong password was entered, press the or button to
clear the password, then repeat steps 3–5.
To exit the menu, press the button.
IMPORTANT: Aer you have nished working with parameters, cycle the keyswitch to clear the password.

2 — USING THE 3401T
Curtis Model 3401T – August 2022 Return to TOC
pg. 12
Open Parameter Menus for Other Curtis Devices
e 3401T allows you to view and edit parameters of Curtis devices that are connected through the
CANbus or the serial port. Take the following steps to open other Curtis devices’ menus.
1. Go to the home screen.
2. Press the button. e Password screen displays:
1234 5
>>>Enter Controller Menu Password
OEM
e screen’s active access level is highlighted in blue; in the example above, the User access level
is active.
3. To change the access level, press the , , , or button.
4. Use the F1–F5 buttons to enter the ve-digit password, which consists of the numbers 1–5.
Pressing an F1–F5 button enters the number that follows the letter “F”: for example, the
button enters 2.
To indicate how many characters have been entered, the corresponding circle in the middle of
the screen turns blue when a button is pushed. In the following example, two numbers have
been entered:
1234 5
>>>Enter Controller Menu Password
OEM
Tip: To clear the most recently entered number, press the button; the corresponding circle
turns white. To exit the password screen, press the button until the password is cleared, then
press the button again.

2 — USING THE 3401T pg. 13
Return to TOC Curtis Model 3401T – August 2022
5. Press the button to submit the password. If the password is correct, the 3401T will list the
Curtis devices on the CANbus.
If the password screen indicates that the wrong password was entered, press the or
button to clear the password, then repeat steps 3–5.
6. If multiple devices are listed, use the and buttons to select the device you want to work
with.
7. Press the button. e 3401T downloads the device’s menu and then displays the main menu.
You can now view and edit parameters.
To exit the menu, press the button.
IMPORTANT: After you have finished working with parameters, cycle the keyswitch to clear
the password.
Open Parameter Menus of Devices Connected to the Serial Port
e 3401T provides read-only access to the main and Monitor menus of Curtis devices that support
the ESP/SP protocol and are connected through the serial port. Take the following steps to open
these menus:
1. Go to the home screen.
2. Press the button. e main menu displays and you can now view parameters.
To exit the menus, press the button.

2 — USING THE 3401T
Curtis Model 3401T – August 2022 Return to TOC
pg. 14
Using the Parameter Menu Screens
e second column of Table 2-1 describes how to use the 3401T’s buttons to navigate the menus and
change parameter values.
In addition, the device enables you to rapidly change parameter values by factors of 10, 100, 1000, or
10,000 times the parameter’s step size. For example, suppose that you need to increase a parameter’s
value by 1000 step sizes. Instead of incrementing the value 1000 times, you can increase the value
by pressing a few buttons.
Take the following steps to rapidly change the selected parameter’s value:
1. Press the button until the screen’s upper right corner indicates the factor by which to change
the value. e following table lists the indicators:
Indicator Factor
1
Note: x1 is the default, and indicates that the parameter value
will be incremented or decremented by one step size.
10
100
1000
10,000
2. Perform one of the following steps:
• To increase the value by the specied factor, press the button.
• To decrease the value by the specied factor, press the button.
3. If the value needs further adjustment but by a dierent factor, repeat this procedure.