Motor Controllers

AC Induction Motor Controllers

SERIES
1232 1234
1236

SERIES Logos
Curtis MarCom 2014

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236
A range of controllers (inverters) for the speed and torque control of 3-phase AC motors rated from 1kW
to 25 kW. Intended for use as electric traction or hydraulic pump motor controllers for mobile, on-vehicle
applications
SERIES Logos that use a 24-80Vdc nominal battery supply.
Curtis MarCom 2014

The ‘SE’ Advantage

The Curtis ‘SE’ AC controllers utilize the latest technology to increase
the peak current ratings for each size of controller. For a given rating,
the SE models are smaller and lower cost than previous Curtis AC
controllers, benefits that are highly advantageous for all types of
applications.

Only Curtis AC can offer:

See a 360° view of Model 1232SE:
Curtis VCL™—Vehicle Control Language is an easy to use
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programming language that allows vehicle developers to write
powerful logic functions and create a ‘virtual system controller.’ Curtis
offers customers VCL development tools and training. Curtis also
provides a VCL service where Curtis engineers will work with the OEM
to create any custom VCL code required.

Indirect Field Orientation (IFO) Vector Control algorithm generates

the maximum possible torque and efficiency across the entire speed
range. Advanced Curtis IFO vector control provides superb drive ‘feel’,
improved speed regulation and increased gradeability.

Curtis Auto-Tune function enables quick and easy characterization of

the AC motor without having to remove it from the vehicle. Curtis AC
controllers are fully compatible with any brand of AC motor.
See a 360° view of Model 1234SE:
Dual-Drive Functionality is standard, allowing correct control of curtisinstruments.com/360view
applications featuring twin traction motors. This function ensures smooth
and safe operation, minimal tire wear and correct load sharing between
the traction motors at all times.

Configurable CANbus connection allows communication with other

CANbus enabled devices. They are CANopen compatible and provide
24 VCL-configurable CAN ‘mailboxes’—10 more than earlier Curtis AC
controllers.

Integrated System Controller—More than just a motor controller,

they are also powerful system controllers. They feature a comprehensive
allocation of multi-function I/O pins for use as analog inputs, digital
inputs, contactor coil drivers and proportional valve drivers. In addition
to this local I/O, these controllers can use VCL to map and configure the See a 360° view of Model 1236SE:
remote I/O available on other CANbus devices, send messages to CAN
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displays and thus control and monitor the entire system.

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236

SERIES Logos
Curtis MarCom 2014

FEATURES

Increased Performance, Improved Functionality

▶▶ Higher peak current rating allows use of a physically smaller controller for a given
load, for easier installation in any vehicle.
▶▶ CE marked as a programmable safety device under EN ISO 13849-1.
▶▶ Models available for 350–650A output at 24–48V system voltages. These are
true 2 minute RMS ratings, not short duration ‘boost’ ratings.
▶▶ Enhanced 64MHz micro and additional FLASH memory doubles the available VCL
code space and provides more than twice the VCL execution speed.
▶▶ VCL-configurable CAN ‘mailboxes’ provide highly flexible CAN master capabilities.
▶▶ Advanced Pulse Width Modulation techniques produce low motor harmonics,
low-torque ripple and minimized heating losses, resulting in high efficiency.

Unmatched Flexibility

▶▶ Programmable for either traction or pump applications.

▶▶ Field upgradeable software.
▶▶ Integrated battery state-of-charge algorithm and hour meters.
▶▶ Fully-featured generic software and VCL for typical Warehouse Truck
applications is included on 24V 1232SE and 1234SE models.
▶▶ Comprehensive programming options and VCL allow other applications to be
easily supported.
▶▶ Curtis hand-held or PC Windows programming tools provide easy programming
and powerful system diagnostic tools.
▶▶ Integrated status LED provides instant diagnostic indication.

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236

FEATURES
SERIES Logos
continued
Curtis MarCom 2014

Robust Safety and Reliability Meets or complies with relevant US and

International Regulations
▶▶ Dual Microprocessor architecture cross-checks critical
circuits, logic, and software functions to ensure the highest ▶▶ EMC: Designed to the requirements of EN12895.
possible functional safety performance level is achieved. ▶▶ Safety: Designed to the requirements of:
▶▶ Insulated metal substrate power-base provides superior EN1175-1:1998+A1:2010
heat transfer for increased reliability. EN (ISO) 13849-1
▶▶ Fail-Safe power component design. ▶▶ IP65 Rated per IEC 60529.
▶▶ Reverse polarity protection on battery connections. ▶▶ UL recognized per UL583.
▶▶ Short circuit protection on all output drivers. ▶▶ Regulatory compliance of the complete vehicle system
▶▶ Thermal cutback, warning, and automatic shutdown with the controller installed is the responsibility of the
provide protection to motor and controller. vehicle OEM.

▶▶ Rugged sealed housing and connectors meet IP65

environmental sealing standards for use in harsh
environments.

FUNCTIONAL SAFETY DATA

Model Safety Function PL Designated Architecture MTTFd DC
1232SE / 1234SE Uncommanded Powered Movement d Category 2 ≥40 yrs ≥90%
1232SE / 1234SE Motor Braking Torque c Category 2 ≥16 yrs ≥90%
1236SE Uncommanded Powered Movement d Category 2 ≥36 yrs ≥90%
1236SE Motor Braking Torque c Category 2 ≥12 yrs ≥90%

MODEL CHART
Nominal Battery 2 Min RMS S2–60 Min RMS
Model
Voltage (V) Current Rating (A) Current Rating (A)
1232SE-24XX 24 375 185
1232SE-53XX 36–48 350 175
1234SE-45XX 24–36 500 235
1234SE-54XX 36–48 450 215
1236SE-46XX 24–36 650 285
1236SE-56XX 36–48 600 260
1236SE-65XX 48–80 450 185

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236

SYSTEM
SERIES Logos
ACCESSORIES
Curtis MarCom 2014

The Curtis Model 1222 is an AC The Curtis Model 1352 CANbus I/O The Curtis Model 1313 Handheld
induction motor controller for ‘steer expansion module features 9 I/O pins, Programmer is ideal for setting
by wire’ electric power steering systems including 6 proportional valve drivers. parameters and performing
and is the ideal partner for the ‘SE’ This module can be used to further diagnostic functions.
Controllers on vehicles such as reach expand the I/O capability of Curtis AC
trucks, order pickers, stackers and other motor controllers using VCL.
similar industrial vehicles.

Contact Curtis to obtain the VCL Vehicle Control Language compiler and development tools.

CONNECTOR WIRING

CAN ENC ANA

TERM L PHASE B OUT* TX +5V SW1/ANA1
CAN BRK THR POT COIL
CAN H TERM H DRIVER 6 WIPER HI RETURN
ENC
PHASE BRK
CAN L SW8 A RX POT HI +12V

35 34 33 32 31 30 29 28 27 26 25 24

23 22 21 20 19 18 17 16 15 14 13
3
12 11 10 9 8 7 6 5 4 2 1

SW7 DRIVER POT DRIVER SW16

7 LOW 3

SW6 SW4 SW2/ANA2 DRIVER 1 THR PROP

WIPER DRIVER
SW5 SW3 I/O GND DRIVER 2 DRIVER 4 KSI

* This pin is not connected on 1232SE

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236
WIRING DIAGRAM
1232 AC Induction Motor Controller
TYPICAL
SERIES Logos
WIRING
Curtis MarCom 2014

KSI J1-1

EM REV. COIL J1-13

J1-24 SWITCH 1/ANA 1 RETURN

PUMP CONT
E/M BRAKE
MAIN

LOAD HOLD VALVE

PROP. VALVE
INTERLOCK J1-9 SWITCH 3
MODE J1-10 J1-6
SWITCH 4 DRIVER 1

KEYSWITCH
DRIVER 2 J1-5
LIFT J1-11 SWITCH 5 J1-4
DRIVER 3
LOWER J1-12 J1-3
SWITCH 6 DRIVER 4
J1-2 20A
FORWARD J1-22 PV DRIVER
SWITCH 7
J1-19
DIGITAL DRIVER 6
REVERSE J1-33 SWITCH 8 DIGITAL DRIVER 7 J1-20
J1-14
SWITCH 16 MAIN
EMERGENCY
B+ STOP

MOTOR
TEMP. INPUT J1-8
SWITCH 2/ANA 2 U

V AC MOTOR BATTERY
24
T
W
J1-7 I/O GROUND
J1-26 1
+5V (100mA)
J1-31 2 POSITION
ENCODER PHASE A J1-32 4 ENCODER
PHASE B
I/O Gnd J1-7 3
B-
J1-15 THROTTLE
J1-23
POT HIGH CAN H
}
THROTTLE POT

J1-35 CAN PORT

J1-16 THROTTLE CAN L
WIPER J1-21
CAN TERM H Short for 120
J1-27 POT 2 HIGH J1-34 Ohm Termination
CAN TERM L

}
J1-17 POT 2
POT 2

WIPER J1-25 4
+12V (100mA)
J1-28 3
SERIAL TX SERIAL PORT
J1-18 PORT J1-29
POT LOW 1 4 PIN MOLEX
RX
J1-7 2
I/O GROUND

8
6 DISPLAY
5

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236

DIMENSIONS
SERIES Logos
mm (typical)
Curtis MarCom 2014

1232SE

180

169.0
4X R3

W
U

140 129.0
B+

B-

STATUS
5.5 LEDs

5.5
4X Ø7.00 THRU 5X M6X1.0 - 6H 18.0

75 74

12

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236

DIMENSIONS
SERIES Logos
mm (typical)
Curtis MarCom 2014

1234SE

212
200.6 5.5

W
U

155 140.4
B+

B-

7.3
STATUS LEDs
5X M6X1.0 20.0
4X Ø7.00±0.13

74.3
79

11.0

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 SERIES
1232 1234
Models 1232SE / 1234SE / 1236SE
1236

DIMENSIONS
SERIES Logos
mm (typical)
Curtis MarCom 2014

1236SE M8 ø1.25,
6 plcs

Status LEDs
U

W
165
145
FUSE

B+

B-
7 dia.,
4 plcs

212 10 (0.4)
232

85 80

19

WARRANTY Two year limited warranty from time of delivery.

is a trademark of Curtis Instruments, Inc. Specifications subject to change without notice ©2017 Curtis Instruments, Inc. 50288 REV E 1/17

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