Curtis Instruments 1212 User manual

Manual
Electronic Motor Controllers
Read Instructions Carefully!
Specications are subject to change without notice.
© 2019 Curtis Instruments, Inc. ® Curtis is a registered trademark of Curtis Instruments, Inc.
© The design and appearance of the products depicted herein are the copyright of Curtis Instruments, Inc. 53112 Rev F Sep 2019
Curtis Instruments, Inc.
200 Kisco Avenue
Mt. Kisco, NY 10549
www.curtisinstruments.com
Models 1212 &1212P

1212 & 1212P Manual - Sep 2019
pg. ii
TABLE OF CONTENTS
CHAPTERS
1: OVERVIEW ...................................................................................................................................... 1
2: INSTALLATION AND WIRING ............................................................................................................ 4
MOUNTING THE CONTROLLER ...................................................................................................... 4
CONNECTIONS: HIGH CURRENT .................................................................................................... 5
CONNECTIONS: LOW CURRENT..................................................................................................... 5
WIRING: STANDARD INSTALLATION, 1212..................................................................................... 6
WIRING: STANDARD INSTALLATION, 1212P................................................................................... 7
THROTTLE WIRING........................................................................................................................ 8
SWITCHES AND OTHER HARDWARE............................................................................................. 10
3: PROGRAMMABLE PARAMETERS .................................................................................................... 13
DRIVE PARAMETERS.................................................................................................................... 15
SPEED PARAMETERS................................................................................................................... 17
THROTTLE PARAMETERS............................................................................................................. 18
CURRENT PARAMETERS .............................................................................................................. 21
INHIBIT PARAMETERS.................................................................................................................. 21
BRAKE PARAMETERS................................................................................................................... 22
HORN PARAMETERS.................................................................................................................... 22
MOTOR PARAMETERS ................................................................................................................. 23
STALL PARAMETERS.................................................................................................................... 23
BDI PARAMETERS........................................................................................................................ 24
COMPENSATION PARAMETERS .................................................................................................... 25
EMERGENCY REVERSE PARAMETES............................................................................................. 25
MISCELLANEOUS PARAMETERS................................................................................................... 26
4: MONITOR MENU ............................................................................................................................ 27
5: INITIAL SETUP ............................................................................................................................... 28

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1212 & 1212P Manual - Sep 2019
TABLE OF CONTENTS CONT’D
6: VEHICLE PERFORMANCE ADJUSTMENT ......................................................................................... 31
7: DIAGNOSTICS AND TROUBLESHOOTING......................................................................................... 37
PROGRAMMER DIAGNOSTICS ...................................................................................................... 37
LED DIAGNOSTICS....................................................................................................................... 37
FAULT HANDLING......................................................................................................................... 37
8: MAINTENANCE .............................................................................................................................. 40
DIAGNOSTIC HISTORY.................................................................................................................. 40
APPENDIX A: VEHICLE DESIGN CONSIDERATIONS .............................................................................. 41
APPENDIX B: EN 13849 COMPLIANCE, CURTIS 1212P CONTROLLER ................................................ 43
APPENDIX C: BATTERY DISCHARGE INDICATOR (BDI) SETUP .............................................................. 45
APPENDIX D: PROGRAMMING DEVICES.............................................................................................. 47
APPENDIX E: 1212/1212P CONTROLLER SPECIFICATIONS ................................................................. 48
FIGURES
FIGURE 1: CURTIS 1212/1212P ELECTRONIC MOTOR CONTROLLER ................................................... 1
FIGURE 2: MOUNTING DIMENSIONS, CURTIS 1212/1212P CONTROLLERS .......................................... 4
FIGURE 3A: STANDARD WIRING CONFIGURATION, CURTIS 1212 CONTROLLER .................................... 6
FIGURE 3B: STANDARD WIRING CONFIGURATION, CURTIS 1212P CONTROLLER .................................. 7
FIGURE 4: WIRING FOR 3-WIRE, 5KΩ POTENTIOMETER THROTTLE...................................................... 8
FIGURE 5: WIRING FOR VOLTAGE THROTTLE........................................................................................ 9
FIGURE 6: WIRING TO INHIBIT OPERATION DURING BATTERY CHARGING ............................................ 11
FIGURE 7: EFFECT OF ADJUSTING THE THROTTLE MAP PARAMETER.................................................. 19
FIGURE 8: WIRING FOR BRAKE LIGHT................................................................................................. 22
FIGURE 9: WIRING FOR PUMP SRO..................................................................................................... 26
FIGURE B-1: SAFETY CHANNEL BLOCK DIAGRAM, CURTIS 1212P CONTROLLER ................................ 43

pg. iv
TABLE OF CONTENTS CONT’D
1212 & 1212P Manual - Sep 2019
TABLES
TABLE 1: PROGRAMMABLE PARAMETER MENUS ............................................................................... 13
TABLE 2: STATUS LED FAULT CODES.................................................................................................. 38
TABLE 3: TROUBLESHOOTING CHART ................................................................................................ 39
TABLE E-1: SPECIFICATIONS: 1212 CONTROLLER .............................................................................. 48

pg. 1
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1 — OVERVIEW
1 — OVERVIEW
e Curtis 1212 and 1212P motor speed controllers provide precise and smooth control of permanent
magnet drive motors for battery powered vehicles. e 1212 is designed for use in low power DME
applications such as micro-scooters, mini-scooters, foldable scooters, and low-end personal mobility
vehicles. Although it is optimized for use on modern 3-wheel and 4-wheel mobility aid scooters, its
programmable options also allow it to be used on any low power permanent magnet motor application.
e 1212P is designed for use in pallet truck applications.
e 1212/1212P controllers are fully programmable by means of a Curtis programming device. Use
of the programmer oers diagnostic and test capability as well as configuration exibility.
Figure 1
Curtis
1212/1212P
Electronic Motor
Controller.
Like all Curtis motor controllers, the 1212 and 1212P oer superior operator control of the vehicle’s
motor drive speed. Key features include:
Smooth and Secure Control
• Advanced speed regulation maintains precise speed over varied terrain, obstacles, curbs, and
ramps
• Linear cutback of current ensures smooth control, with no sudden loss of power during
undervoltage or overtemperature
• Optional speed limit potentiometer provides direct and linear control of the maximum vehicle
speed
• Proprietary algorithms help prevent gearbox wear while providing smooth starts and reversals

1 — OVERVIEW
1212 & 1212P Manual - Sep 2019 Return to TOC
pg. 2
• e vehicle is brought to a complete stop before the electromagnetic brake is applied, ensuring
safe and secure stops under all conditions
• Charger inhibit input prevents driving while charger is attached
• Key O Decel function ensures a smooth “brake to stop” when the key is turned o while
driving or when a fault occurs that requires the vehicle to stop
• Anti-Rollback/Roll-forward function provides smooth and safe vehicle control on hills and
ramps
• Internal main relay provides secure power-o
• Boost current gives a brief boost of current greatly improving transient loads such as starting
on a hill, crossing thresholds, etc.
Easy Installation and Setup
• Industry standard footprint, mounting centers, and wiring allows drop-in replacement of
other controllers
• 1212 and 1212P controllers are easily programmed with a Curtis programming device, or can
be supplied pre-programmed
• Accepts all standard throttle types, including single-ended, wigwag, and unipolar
• Simplified troubleshooting and diagnostics
• Standard Mini-Fit Molex Jr. and Faston terminals provide proven, robust wiring connections
Valuable Additional Features
• Optional Push Switch input releases the brake and allows the motor to free-wheel (1212
models only)
• Push-Too-Fast feature restricts the vehicle’s speed while it is being pushed, even with the key
o or the batteries disconnected
• Automatic compensation for changes in motor condition to ensure optimum drive
preformance at all times
• Multi-mode provides for two distinct and programmable control modes (indoor/outdoor)
• Power Saver function prevents the controller draining the battery when the vehicle is inactive
• Battery Discharge Indicator output
• Optional Speed Inhibit input oers exibility to reduce speed or prevent drive under certain
conditions, such as when the seat is lied
• Adjustable brake hold voltage reduces heating of the brake coil
• Reverse Beeper function alerts bystanders
• Electronics sealed to IP54

1 — OVERVIEW pg. 3
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Robust Safety and Reliability
• High RF immunity prevents speed variation and shutdowns in noisy RF environments
• Controller power circuits and microprocessor soware are continuously monitored for proper
operation
• On power-up, system automatically checks the throttle, brake, and associated wiring, and
disables drive if a fault is found
Meets or Complies with Relevant US and International regulations
• 1212 is designed to meet EN12184, EN55022, IEC61000-6-2 & -4-6, and ISO 7176; FDA
documentation filed; TÜV certication pending.
• 1212P designed to meet EN12895, EN1175, EN13849, and UL583.
Unique features of 1212P for pallet truck applications
• Emergency reverse with belly button switch input
• Input from Curtis 906 battery discharge indicator meter
• Output Li Lockout signal, which can drive a relay
• Neutral input that can be used to shut o output regardlessof throttle input
Note: Push feature is not available with the 1212P.
Familiarity with your Curtis controller will help you install and operate it properly. We encourage
you to read this manual carefully. If you have questions, please contact the Curtis office nearest you.
Working on electric vehicles is potentially dangerous. You should protect yourself against
runaways and high current arcs:
RUNAWAYS — Some conditions could cause the vehicle to run out of control. Disconnect the
motor or jack up the vehicle and get the drive wheels off the ground before attempting any
work on the motor control circuitry.
HIGH CURRENT ARCS — Always open the battery circuit before working on the motor control
circuit. Wear safety glasses, and use properly insulated tools to prevent shorts.
CAUTION

2 — INSTALLATION AND WIRING
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pg. 4
2 — INSTALLATION AND WIRING
MOUNTING THE CONTROLLER
e 1212/1212P controller can be oriented in any position, but the location should be carefully
chosen to keep the controller clean and dry. If a clean, dry mounting location cannot be found,
a cover must be used to shield the controller from water and contaminants.
e outline and mounting hole dimensions are shown in Figure 2. e controller should be mounted
by means of the two mounting holes at the opposing corners of the heatsink, using M4 (#8) screws.
Figure 2
Mounting
Dimensions,
Curtis 1212
and 1212P
Controllers.
Dimensions in millimeters and (inches)
You will need to take steps during the design and development of your end product to ensure that its
EMC performance complies with applicable regulations; suggestions are presented in Appendix A.

2 — INSTALLATION AND WIRING pg. 5
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CONNECTIONS: High Current
Four 1/4" Faston terminals are provided for the high current connections.
e motor connections (M1, M2)and battery connections
(B+, B–) have one terminal each.
CONNECTIONS: Low Current
e low current logic control connections are provided by a 14-pin connector. e mating connector
is a Molex Mini-Fit-Jr. receptacle p/n 39-01-2140 with appropriate 45750-series crimp terminals.
J1
1234567
8910 11 12 13 14
J1 Pin 1 pot wiper
J1 Pin 2 pot high
J1 Pin 3 horn / li lockout output*
J1 Pin 4 mode switch (open=M1, closed=M2)
J1 Pin 5 keyswitch input (KSI)
J1 Pin 6 speed inhibit
J1 Pin 7 B+
J1 Pin 8 pot low
J1 Pin 9 speed pot / pump SRO input*/ li lockout input*
J1 Pin 10 status LED
J1 Pin 11 BDI
J1 Pin 12 reverse switch / neutral input*
J1 Pin 13 I/O GND
J1 Pin 14 push switch / emergency reverse*
*Li lockout, emergency reverse, pump SRO, and neutral input
available only on 1212P.
A 4-pin low power connector is provided for the programmer and the battery
charger. e mating connector is a Molex Mini-Fit-Jr. receptacle p/n 39-01-2040 with
appropriate 45750-series crimp terminals. (A mating connector is provided with the
handheld programmer.).
A 2-pin low power connector is provided for the electromagnetic brake. e mating
connector is a Molex Mini-Fit-Jr. receptacle p/n 39-01-2020 with appropriate
45750-series crimp terminals.
M1 M2 B- B+
12
34
J2
J2 Pin 1 Rx
J2 Pin 2 I/O GND
J2 Pin 3 Tx/charge inhibit
J2 Pin 4 B+
J3 Pin 1 Brake +
J3 Pin 2 Brake - 1
2
J3

2 — INSTALLATION AND WIRING
1212 & 1212P Manual - Sep 2019 Return to TOC
pg. 6
WIRING: STANDARD INSTALLATION, 1212
e wiring diagram presented in Figure 3a shows a typical installation for a DME application. is
installation is shown with a single-ended 3-wire 5kΩpotentiometer throttle and a reverse switch.
With wigwag throttles, a reverse switch is not used and Pin J1-12 is le unconnected.
e optional speed inhibit input can be wired into the circuit in various ways; in the standard
installation shown here, it is B- active (Inhibit Type parameter set to 0).
e J2 connector can be used interchangeably for the programmer or for the battery charger.
Figure 3a
Standard Wiring Configuration, Curtis 1212 Controller.
SPEED INHIBIT
KEYSWITCHCONTROL
FUSE
M2
M1
J1-8
J3-1
B-
B+
POWER
FUSE
BATTERY
Programmer
1212 Controller
MODE (M1,M2)
J1-4
J1-2
J1-1
J1-6
J2-4
J2-3
J2-2
J2-1
B+
I/O GND
Tx
Rx
MOTOR
J1-5 KSI
MODE SW
STATUS LED
REVERSE
PUSH
PUSH SW J1-14
HORN
I/O GND
POT WIPER
J1-3
J1-11
BDI(0-5V)
J3-2
BRAKE +
BRAKE -
EM BRAKE
J1-9
B+
B-
CHARGE INHIBIT J2-3
CHARGER
SOCKET
J1-10
POT HIGH
J1-7 B+
POT LOW
HORN SW
STATUS LED
R
HORN
INHIBIT SW
J2-4
J2-2
B+
I/O GND
BRAKE SW(optional)
J1-12
REVERSE SW
J1-13
5KΩ
THROTTLE
POT
100kΩ
SPEED
POT
SPEED LIMIT POT

2 — INSTALLATION AND WIRING pg. 7
Return to TOC 1212 & 1212P Manual - Sep 2019
WIRING: STANDARD INSTALLATION, 1212P
e wiring diagram presented in Figure 3b shows a typical installation for a pallet truck application.
is installation is shown with a Curtis electronic throttle. e inhibit input can be wired into
the circuit in various ways; in the standard installation shown here it serves as an interlock (see
pin J1-6), and is B+ inactive (Inhibit Type parameter set to 4).
e J2 connector can be used interchangeably for the programmer or for the charge inhibit.
e polarity of the motor M1 and M2 connections will aect the operation of the emergency reverse
feature. e forward and reverse switches and the M1 and M2 connections must be congured so
that the vehicle drives away from the operator when the emergency reverse button is pressed.
CAUTION
Figure 3b
Standard Wiring Configuration, Curtis 1212P Controller.
INTERLOCK
KEYSWITCHCONTROL
FUSE
M2
M1
INTERLOCK SW
(Inhibit Type = 4)
J1-8
J3-1
B-
B+
POWER
FUSE
BATTERY
Programmer
1212P Controller
MODE (M1,M2)
J1-4
J1-2
J1-13
J1-1
J1-6
J2-4
J2-3
J2-2
J2-1
B+
I/O GND
Tx
Rx
MOTOR
CURTIS
ET-19XX
J1-5 KSI
EMERGENCY
STOP
MODE SW
STATUS LED
NEUTRAL INPUT
EMERGENCY
REVERSE
EM REV SW J1-14
PUMP CONTACTOR
COIL
LIFT LOCKOUT
OUTPUT
I/O GND
POT WIPER
J1-3
J1-11
BDI
BDI(0-5V)
J3-2
BRAKE +
BRAKE -
EM BRAKE
LIFT LOCKOUT
INPUT
J1-9 PIN3
B+
B-
CHARGE INHIBIT J2-3
CHARGER
SOCKET
J1-12
J1-10
POT HIGH
J1-7 B+
POT LOW
HORN
KSI
GND
0.5V-4.5V
Neutral
LIFT SW
HORN
SW
EMERGENCY
STOP
STATUS LED
R
(Throttle Type = 5)
Must match the parameter

2 — INSTALLATION AND WIRING
1212 & 1212P Manual - Sep 2019 Return to TOC
pg. 8
THROTTLE WIRING
Either a 3-wire potentiometer throttle or a voltage throttle can be used with the 1212/1212P controller.
e controller can accept a single-ended, inverse single-ended, wigwag, inverse wigwag, or unipolar
input signal from the throttle, depending on how the rottle Type parameter is programmed; see
page 18.
rottle wiring is described in the following text. If the throttle you are planning to use is not covered,
contact the Curtis office nearest you.
5kΩ, 3-Wire Potentiometer
A 5kΩ, 3-wire potentiometer is shown in the wiring diagrams (Figures 3a and 3b) as well as in
Figure 4. With this throttle, the controller can be programmed for a rottle Type 0–4 input signal;
see page 18.
1234567
8910 11 12 13 14
Figure 4
Wiring for 3-Wire,
5K
Ω
Potentiometer
rottle.
For wigwag, inverted wigwag, and unipolar applications, the pot can be correctly centered within the
controller’s neutral band by using the throttle autocalibration feature (see page 20).
e controller provides full pot fault protection against open or shorted wires anywhere in the
throttle assembly. e overall pot resistance should be 4.3 to 7.0kΩ. Values outside this range will
trigger a fault condition. If a pot fault occurs while the vehicle is moving, the controller will decelerate
the vehicle to a smooth stop using the decel rate set by the Key O Decel parameter. If the fault is
corrected while the throttle is still applied, an HPD fault will be issued and driving is disabled until
throttle is reduced to neutral.

2 — INSTALLATION AND WIRING pg. 9
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Voltage Throttle
Wiring for a voltage throttle is shown in Figure 5. With this throttle, the controller can be programmed for
a rottle Type 5–9 input signal; see page 18.
1234567
8910 11 12 13 14
+
-
VOLTAGE
THROTTLE
Pot Wiper input (Pin 1)
B-
Figure 5
Wiring for Voltage
rottle.
e PotHigh and PotLow parameters are used to set the voltage range of these throttles. If the pot wiper
voltage is higher than the programmed PotHigh value or lower than the programmed PotLow value, the
controller will issue an out-of-range throttle fault. In order for the controller to be able to detect out-of-range
throttle faults, the throttle must have a range within the limits of 0.4–4.6 V.
Note: If a 0–5V throttle is used, it is the responsibility of the OEM to provide appropriate throttle fault
detection.
Speed Limit Pot / Lift Lockout Input
A speed limit pot allows the operator to adjust the speed of the vehicle at full throttle. e speed limit pot
should be sized so that it does not aect throttle input resistance and thus the throttle response; a 100kΩpot
is recommended.
e speed limit pot is at its maximum speed setting when its wiper is shorted to the throttle’s pot high
connection (Pin 2). When the speed limit pot is in its maximum speed position, the vehicle’s speed at full
throttle corresponds to the programmed maximum speed setting.
The speed limit pot is at its minimum speed setting when its wiper is shorted to the throttle’s pot low
connection (Pin 8). When the speed limit pot is in its minimum speed position, the vehicle’s speed at full
throttle corresponds to the programmed minimum speed setting. For information on the programmable
speed parameters, see Section 3.
e speed limit pot varies the vehicle’s speed linearly over the range between the minimum and maximum
speed settings in each mode, in forward and in reverse.
If a speed limit pot is not used, the Speed Limit Pot parameter should be programmed O to disable the
fault check at the speed limit pot.
In 1212P models only, the same pin (Pin 9) can also take an external li lockout signal from a Curtis 906 meter
to control the li lockout driver when li lockout is triggered. is feature inhibits the speed limit pot input.

2 — INSTALLATION AND WIRING
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pg. 10
SWITCHES AND OTHER HARDWARE
Keyswitch
e vehicle should have a master on/o switch to turn the system o when not in use. e keyswitch
provides logic power for the controller and for the other control input switches. It must be sized to
carry the 150mA quiescent logic current plus the current necessary to drive the precharge function
(1.5 A for 0.5 seconds) and the status LED, horn, and any other accessories powered from the
keyswitch circuit.
Push Switch / Emergency Reverse Switch
A push switch can be used to electrically release the electromagnetic brake and inhibit driving.
Maximum speed in push mode is set by the Push Max Speed parameter. If a push input is applied at
power-up, it will not be acknowledged until it has been released and reapplied. e vehicle can enter
push mode only when it is in neutral or when the controller is not powered on.
In 1212P models only, this input (Pin 14) can be used for an emergency reverse switch (belly button
switch); see parameter Switch Normally Closed, on page 25. When the vehicle moves forward or
stops, if the emergency reverse switch is pressed the vehicle will decelerate to a stop (if it was moving)
and then be driven in the reverse direction.
Brake Release Switch (Brake Coil Disable Switch)
If a brake release lever is used to release the electromagnetic brake mechanically, a brake coil
disable switch is recommended. is switch opens the electromagnetic brake coil circuit when the
mechanical brake release lever releases the brake from the motor sha. e open brake coil circuit
will register as a fault, inhibiting controller operation if an operator attempts to drive the vehicle
with the brake mechanically released. is safety feature ensures that the vehicle cannot be driven
when the brake cannot be engaged.
Mode Switch
A mode switch is used to select operation in Mode 1 or Mode 2. Typically, Mode 1 is programmed
for slower indoor driving and Mode 2 for faster outdoor driving; see Speed menu. e controller is
in Mode 2 when the mode switch is in the On position (input connected to B+). Leaving the mode
input oating or actively switching it O (pulling it to B-) puts the controller in Mode 1.
Emergency Stop Switch
is switch is used only in 1212P applications, and is shown in the wiring diagram (Figure 3b,
page 7). When the emergency stop button is pressed, the controller shuts o the EM brake output
regardless of vehicle speed, thus engaging the brake immediately. e emergency stop switch with
dual contacts is recommended to cut o KSI and battery power supply at same time. Also, low value
for the Key O Decel parameter (typically < 1.0 s) is recommended to produce fast response for
vehicle Emergency Stop.

2 — INSTALLATION AND WIRING pg. 11
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Battery Discharge Indicator (BDI)
e 1212/1212P controller can drive a BDI panel meter to show the battery pack’s state of charge as
a percentage of the ampere-hour capacity of the batteries. e batteries must be put through a full
charge cycle with the controller installed before the BDI will begin operation.
Charger Inhibit
Typically, battery chargers have a dedicated third terminal that automatically provides inhibit. When
the charger is connected to the controller’s J2 connector, the controller disables the drive functions
and engages the EM brake while the charger is connected. Inhibit is provided through J2 Pin 3; see
wiring diagrams (Figure 3a, page 6, and Figure 3b, page 7). e charger inhibit automatically powers
up the controller without the keyswitch on so that BDI can be tracked during charge. Aer BDI is
100% reset, power is totally shut o (no current used) to avoid draining the battery.
If your battery charger does not have a dedicated inhibit terminal, you must wire B– to J2 Pin 3, as
shown in Figure 6.
For pallet truck applications, the charger B+ and B- should not connect to J2 due to its low current
rating, as shown in Figure 3b.
12
34
Figure 6
Wiring to Inhibit
Operation During
Battery Charging
(For Battery Chargers
Without a Dedicated
Inhibit Terminal).
Speed Inhibit
A speed inhibit switch can be used to limit drive speed, or even to prevent drive altogether, in certain
conditions; see Inhibit menu. e maximum speed allowed during inhibit operation is also set in the
Inhibit menu, with a setting of zero preventing drive.
Circuitry Protection Devices
To protect the control wiring from accidental shorts, a low current fuse (appropriately sized for the
maximum control circuit current draw) should be connected in series with the B+ logic supply. A
fuse is also recommended in the high power circuit from the battery to the controller’s B+ terminal.
is fuse will protect the power system from external shorts and should be sized appropriately for
the maximum rated current of the controller.

2 — INSTALLATION AND WIRING
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pg. 12
Status LED
e 1212/1212P controller has the capability to drive a panel indicator LED, which can be used to
tell the operator, at a glance, the controller’s status. is LED always indicates whether the controller
is powered on or o. It will also provide diagnostics information via ash codes (see Section 7).
If a status LED is used, it should be installed with the proper resistor in series. e controller’s LED
driver is capable of a maximum current of 15mA. e recommended resistor—designed to limit
driver current to 15mA when active—is 2.4kΩ, 0.5 W. Alternatively, an LED with a built-in resistor
can be used; it should be rated for 24V operation.
Horn / Lift Lockout Output
e controller’s horn driver—Pin 3—is designed to drive a low current dc horn at 1 Hz. e horn
sounds a warning when the reverse direction is selected and when the throttle autocalibration feature
is being used. e horn driver sinks a maximum current of 15mA. Using a horn with a higher current
requirement will damage and disable the driver. e horn driver can be used to drive a brake light
instead of a horn; see Brake menu.
In 1212P models only, Pin 3 can be used to drive a relay to control the pump contactor. Setting the
parameter Li Lockout Enable = On will enable this feature and disable the horn output. Also, if the
parameter External Li Lockout = On, the li lockout output will be active if the li lockout input
is low. e maximum current for this low-side driver is 50mA.
Reverse Switch / Neutral Input
If a single-ended or unipolar throttle is used, a reverse switch connected to B+ can be used to change
the driving direction to reverse.
In 1212P models only, this input (Pin 12) can be used for a neutral input. When the parameter Neutral
Input = On, the 1212P will check this input from a wigwag throttle that has neutral output (such as
the Curtis ET-190E). If the neutral input is low, the 1212P will shut o output regardless of throttle
input.

3 — PROGRAMMABLE PARAMETERS pg. 13
Return to TOC 1212 & 1212P Manual - Sep 2019
3 — PROGRAMMABLE PARAMETERS
e 1212/1212P controllers have a number of parameters that can be programmed using a Curtis
handheld programmer or Curtis PC Programming Station. ese programmable parameters allow
the vehicle’s performance to be customized to best fit the needs of individual vehicle operators.
For information on programmming devices, see Appendix D.
For information on how to use the parameters to optimize performance, see Section 6.
e programmable parameters are grouped hierarchically into menus, as shown in Table 1. Not all
of these parameters are displayed on all controllers; the list for any given controller depends on its
specifications.
Table 1 Programmable Parameter Menus: 1311 Programmer
DRIVE MENU...................................... p.15
— Accel Max Speed
— Accel Min Speed
— Decel High Speed
— Decel Low Speed
— Rev Accel Max Speed
— Rev Accel Min Speed
— Rev Decel High Speed
— Rev Decel Low Speed
— Key Off Decel
— E Stop Decel
— E Stop Pause
— Soft Start
— Gear Soften
— Creep Speed
— Push Max Speed
— Soft Stop Speed
— Speed................................ p. 17
— Mode 1
— Max Speed
— Min Speed
— Rev Max Speed
— Rev Min Speed
— Mode 2
— Max Speed
— Min Speed
— Rev Max Speed
— Rev Min Speed
THROTTLE MENU.............................p. 18
— Type
— Neutral Input
— PotHigh
— PotLow
— Neutral Deadband
— Throttle Max
— HPD
— Speed Limit Pot
— Throttle Map
— Tremor Suppression
— Calibration
CURRENT MENU............................... p. 21
— Main Current Limit
— Braking Current Limit
— Boost Current
— Boost Time
INHIBIT MENU.................................. p. 21
— Type
— Speed
BRAKE MENU.................................. p. 22
— Delay
— Fault Check
— Hold Voltage
— Brake Light
HORN MENU..................................... p. 22
— Fault Beep
— Reverse Beep
— Beep Constant
MOTOR MENU.................................... p.23
— System Resistance
— Resistance Auto Comp
— Auto Comp Current Limit
— Speed Scaler
— Current Rating
— Max Current Time
— Cutback Gain
STALL MENU.................................... p.23
— Stall Speed
— Stall PWM
— Stall Timeout

3 — PROGRAMMABLE PARAMETERS
1212 & 1212P Manual - Sep 2019 Return to TOC
pg. 14
Table 1 Programmable Parameter Menus: 1311 Programmer, cont’d
BDI MENU...................................... p. 24
— Full Voltage
— Empty Voltage
— Full Charge Voltage
— Start Charge Voltage
— Reset Voltage
— Discharge Factor
— Charge Factor
— Low BDI Level
— Low BDI Max Speed
— External Lift Lockout
— Lift Lockout Enable
— Lift Lockout Threshold
— Lift Lockout Output Type
EMERGENCY REVERSE MENU............p.25
— Speed
— Time Limit
— Decel Rate
— Accel Rate
— Max Braking Current
— Switch Normally Closed
— EMR Interlock
MISCELLANEOUS MENU.................. p. 26
— Sleep
— Reset Drive Time
— Emergency Stop
— Pump SRO
COMPENSATION MENU...................... p.25
— IR Comp
— Anti-Rollback Comp

3 — PROGRAMMABLE PARAMETERS pg. 15
Return to TOC 1212 & 1212P Manual - Sep 2019
DRIVE MENU
PARAMETER ALLOWABLE RANGE DESCRIPTION
Accel Max Speed 0.2–8.0 s Sets the rate (in seconds) at which the speed command increases when
throttle is applied with the speed limit pot is in its maximum speed position,
and the vehicle is traveling forward. Larger values represent slower response.
Note: Allowable range is restricted by the Accel Min Speed setting.
Accel Min Speed 0.2–8.0 s Sets the rate (in seconds) at which the speed command increases when
throttle is applied while the speed limit pot is in its minimum speed position,
and the vehicle is traveling forward. Larger values represent slower response
Note: Allowable range is restricted by the Accel Max Speed setting.
Decel High Speed 0.2–8.0 s Sets the rate (in seconds) that is used to slow down the vehicle when it
is traveling forward at high speed and throttle is reduced. Larger values
represent slower response.
Note: Allowable range is restricted by the Decel Low Speed setting.
Decel Low Speed 0.2–8.0 s Sets the rate (in seconds) that is used to slow down the vehicle when it
is traveling forward at low speed and throttle is reduced. Larger values
represent slower response.
Note: Allowable range is restricted by the Decel High Speed setting.
Rev Accel Max Speed 0.2–8.0 s Sets the rate (in seconds) at which the speed command increases when
throttle is applied while the speed limit pot is in its maximum speed position,
and the vehicle is traveling in reverse. Larger values represent slower
response.
Note: Allowable range is restricted by Rev Accel Min Speed setting.
Rev Accel Min Speed 0.2–8.0 s Sets the rate (in seconds) at which the speed command increases when
throttle is applied while the speed limit pot is in its minimum speed position,
and the vehicle is traveling in reverse. Larger values represent slower
response.
Note: Allowable range is restricted by Rev Accel Max Speed setting.
Rev Decel High Speed 0.2–8.0 s Sets the rate (in seconds) that is used to slow down the vehicle when it is
traveling in reverse at high speed and throttle is reduced. Larger values
represent slower response.
Note: Allowable range is restricted by Rev Decel Low Speed setting.
Rev Decel Low Speed 0.2–8.0 s Sets the rate (in seconds) that is used to slow down the vehicle when it
is traveling in reverse at low speed and throttle is reduced. Larger values
represent slower response.
Note: Allowable range is restricted by Rev Decel High Speed setting.
Key Off Decel 0.2–4.0 s Sets the rate (in seconds) that is used to slow down the vehicle at key-off or
in the event of a major fault.
E Stop Decel 0.2–4.0 s Sets the rate (in seconds) that is used to slow down the vehicle during
emergency reverse, i.e., when a throttle command >80% in the reverse
direction is given while the vehicle is moving forward. This gives the operator
a way to stop more quickly when unexpected conditions arise.
E Stop Pause 0.0–1.0 s Sets a pause before reversing direction after an emergency reverse stop.
This gives the operator time to return the throttle to neutral without moving
backwards.
Soft Start 0–100 % This parameter can be used to soften the bump associated with gear slack
in the transaxle when throttle is applied from the neutral state. Larger values
provide a softer slack take-up.

3 — PROGRAMMABLE PARAMETERS
1212 & 1212P Manual - Sep 2019 Return to TOC
pg. 16
DRIVE MENU, cont’d
PARAMETER ALLOWABLE RANGE DESCRIPTION
Gear Soften 0–100 % This parameter is intended to soften the bump associated with gear slack in
the transaxle when throttle is released and then reapplied while the vehicle is
still moving. Larger values provide a softer slack take-up.
Creep Speed 0–10 % Creep Speed helps to prevent vehicle rollback on inclines when the brake
is released with very little throttle applied. It is activated when the throttle
request exceeds the throttle deadband threshold.
Push Max Speed 25–50 % Available only with 1212.
Sets the maximum speed at which the vehicle can be pushed.
When the vehicle is powered on and in neutral, it enters the push mode
when the push button is activated. The electromagnetic brake is released,
driving is inhibited, and speed is limited to Push Max Speed.
When the vehicle is not powered on and the brake is mechanically released
to enable pushing, Push Max Speed still applies. Once sufcient voltage is
generated by the motor, speed will be limited by the controller.
Soft Stop Speed 0–30 % Sets the speed at which a gentler deceleration is initiated when the throttle is
released to neutral; larger values start the soft stop deceleration sooner.
This manual suits for next models
1
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