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Motor Controllers

Permanent Magnet Motor Speed Controller

Models 1229
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Permanent Magnet Motor Speed Controller

Models 1229

The Curtis Model 1229 is a sealed, heavy-duty permanent magnet motor speed controller intended for 

demanding traction applications in hostile environments. It utilizes an advanced powerful dual-microprocessor logic architecture for maximum functional safety and accurate speed control. 

The Curtis Model 1229 is designed for large industrial permanent magnet motor applications, such as 

floor care machines, utility tugs/pushers, burden carriers, and small material handling vehicles and AGVs.

FEATURES

High Power Capability

▶ Class-leading power density gives maximum power 

output from smallest possible package.

▶ Models available from 200–250A output at 24–36V, and 

200A at 48V. These are true 2 minute ratings, not shortterm boost values. 10% boost current for 10 seconds.

▶ Insulated Metal Substrate (IMS) power base provides 

superior heat transfer for increased reliability and highest 

possible continuous current ratings.

▶ Uses a heavy-duty external power isolation contactor to 

provide maximum safety and performance, eliminating 

the overheating and reliability problems often found with 

other manufacturer’s high-current controllers that use 

internal board-mounted isolation relays.

Rugged Construction

▶ Heavy duty threaded M6 busbars for battery and motor 

connectors eliminate reliability issues often found with 

push-on power connectors.

▶ All logic connections via reliable, IP65 sealed 23-pin 

AmpSeal connector.

▶ Robust IP65 sealed enclosure provides excellent chemical 

resistance and protection from harsh environments.

▶ Designed to withstand high levels of bump, shock 

and vibration.
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Permanent Magnet Motor Speed Controller

Models 1229

▶ Curtis handheld or PC Windows programming tools 

provide easy programming and powerful system 

diagnostic tools.

▶ Simple motor set-up programming.

▶ Field-upgradeable software.

▶ Integrated battery state-of-charge algorithm, plus 

hours-run and service interval timers.

▶ Integrated overvoltage, undervoltage and thermal 

cutback protection.

Meets or complies with relevant US and 

International Regulations

▶ EMC: Designed to the requirements of EN12895.

▶ Safety: Designed to the requirements of

– EN1175-1:1998+A1:2010

– EN (ISO) 13849-1

▶ IP65 rated per IEC 60529.

▶ UL recognized per UL583.

▶ Regulatory compliance of the complete vehicle system 

with the controller installed is the responsibility of the 

vehicle OEM.

FEATURES continued

Powerful, Flexible I/O

▶ Four 10A peak rated output drivers allow bi-directional 

PWM control of up to 2 linear actuators, or unidirectional 

control of up to 4 small motor-type loads.

▶ Two additional 2A rated PWM-control auxiliary outputs 

for line contactor, EM brake, solenoid valves or other 

relay and contactor coils.

▶ Integrated fly-back diodes on all auxiliary outputs.

▶ Highly programmable analog and digital inputs, including 

a motor speed sensor input for closed-loop control.

▶ Short circuit protection and integral ESD protection 

on all I/O.

▶ CANopen compatible CANbus connection allows use as a 

‘CAN slave’ on any CANopen system.

▶ CANopen EDS (Electronic Data Sheets) available.

Flexibility and Safety

▶ Dual-microprocessor architecture cross-checks critical 

circuits, logic, and software functions to ensure the highest 

possible functional safety performance level is achieved.

▶ Advanced Pulse Width Modulation (PWM) techniques 

minimize heating losses and torque ripple, resulting in 

high efficiency and ensures lowest possible EMC emissions.

▶ Logic I/O mapping function allows vehicle developers 

to write powerful combinational and sequential logic 

functions.
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Permanent Magnet Motor Speed Controller

Models 1229

MODEL CHART

Model No. Battery Voltage (V) 10 Sec Boost (A) 2 Min Current (A)

1229-31XX 24/36 220 200

1229-32XX 24/36 275 250

1229-41XX 48 220 200

FUNCTIONAL SAFETY

Safety Function PL Designated Architecture MTTFd DC

Uncommanded Powered Motion d Category 2 ≥40 yrs ≥90%

Motor Braking Torque c Category 2 ≥20 yrs ≥90%

SYSTEM ACCESSORIES

The Curtis enGage® II Model 3100R

is a CAN based instrument that 

displays vehicle performance and 

status information.

The DC Contactor SW80 is rated 

for 100 amps in severe switching 

applications and 125 amps in lightduty switching applications.

The Curtis Model 1313 

Handheld Programmer

is ideal for setting parameters 

and performing diagnostic 

functions.
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Permanent Magnet Motor Speed Controller

Models 1229

TYPICAL WIRING DIAGRAM

Floor Care

Switch 4 J1-11

Switch 3 LIFT J1-3

Switch 2 SPEED MODE J1-10

Switch 1 J1-19

Analog 3 J1-7

Analog GND J1-6

Analog 1 J1-13

REVERSE

+5V Out J1-18

Switch 5 J1-5

+17V Out J1-17

GND J1-16

SERIAL PORT

* CAN PORT

MAIN

J1-23

J1-15

J1-22

J1-4

Driver 4

Driver 5

Driver 3

Driver 2

MAIN

BRAKE

J1-20 Driver 1

INTERLOCK

BATTERY

(24–48V)

KEYSWITCH

B+

BJ1-8 KSI

GND J1-16

* With CAN bus, additional I/O pins will be available.

FLOW

RXD J1-12

TXD J1-9

+17V Out J1-17

CAN L J1-2

CAN H J1-1

SPD ENCODER

THROTTLE

SPD LIMIT or

WATER CONTROL

TRACTION

MOTOR

M+

MM

M

Driver 6 J1-21

M BRUSH LOWER

M SQUEEGEE

2A

J1-14 2A Analog 2
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Permanent Magnet Motor Speed Controller

Models 1229

TYPICAL WIRING DIAGRAM

Pallet Mover

Analog 3 J1-7

Switch 4 INTERLOCK J1-11

Switch 3 RABBIT J1-3

Switch 2 J1-10

Switch 1 J1-19

REVERSE

+5V Out J1-18

Analog 1 J1-13

Analog GND J1-6

SERIAL PORT

*CAN PORT

MAIN

J1-23

J1-21

J1-22

J1-4

Driver 4

Driver 6

Driver 3

Driver 2

MAIN

EM BRAKE

J1-20 Driver 1

FORWARD

BATTERY

(24–48V)

KEYSWITCH

B+

BJ1-8 KSI

GND J1-16

* With CAN bus, additional I/O pins will be available.

EM REV (BB)

RXD J1-12

TXD J1-9

+17V Out J1-17

CAN L J1-2

CAN H J1-1

THROTTLE

TRACTION

MOTOR

M+

MM

Driver 5 J1-15

LOWER

TRAVEL

ALARM

2A

2A

LOAD HORN HOLD

PUMP

Switch 5 LIFT J1-5

REDUNDANT

EM REV Analog 2 J1-14
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Permanent Magnet Motor Speed Controller

Models 1229

is a trademark of Curtis Instruments, Inc. Specifications subject to change without notice ©2016 Curtis Instruments, Inc. 50215 REV C 9/16

WARRANTY Two year limited warranty from time of delivery.

CONNECTOR WIRING

DIMENSIONS mm

8 7 6 5 4 3 2 1

15 14 13 12 11 10 9

23 22 21 20 19 18 17 16

CAN H

CAN L

IN 3

OUT 2

SPD DIG IN

ANALOG

IN 3

KSI

TXD

RXD IN 2

GND

EXT 20V

EXT 5V

DIGITAL

DIGITAL

IN GND

ANALOG

DIGITAL

DIGITAL

IN 4

ANALOG

IN 1

ANALOG

IN 2

OUT 5

DIGITAL

DIGITAL

IN 1

OUT 1

DIGITAL

OUT 6

DIGITAL

OUT 4

DIGITAL

OUT 3

DIGITAL

 122 72.0 

 25.0 

 2X ø 6.700 THRU 5.5 

 139.0 

 150 

 57 59 13 0 

 58 

B–

B+ M1

M2