M O D E L   1 2 3... A C   I N D U C T...
AC INDUCTION MOTOR CONTROLLER
MODEL 1232
Only Curtis AC can offer:
• Curtis VCL™—Vehicle Control Language is an easy to
use 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.
• Dual-Drive functionality is standard, allowing correct
control of 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. Model 1232 is
CANopen compatible and can be further customized and
configured using VCL.
DESCRIPTION
The Curtis Model 1232 provides advanced control of AC induction
motors performing on-vehicle traction drive or hydraulic pump
duties. It offers vehicle developers a highly cost-effective
combination of power, performance and functionality.
APPLICATION
Curtis Model 1232 is designed primarily for Class 3 material
handling vehicles, such as walkie pallet trucks. It is equally
suitable for any traction or pump control application.
• Integrated System Controller—More than just a motor
controller, it is also powerful system controller. It features 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, this
controller can use VCL to map and configure the remote I/O
available on other CANbus devices, send messages to CAN
displays and thus control and monitor the entire system.
FEATURES
Advanced functionality, compact power
• High frequency, silent operation across the 0–300Hz stator
frequency range.
• Models available for 150A and 200A output at 24V system
voltages. These are true 2 minute RMS ratings, not short
duration ‘boost’ ratings.
• Powerful operating system allows parallel processing
of vehicle control tasks, motor control tasks and user
configurable programmable logic.
www.curtisinstruments.com
• Advanced Pulse Width Modulation techniques produce low
motor harmonics, low torque ripple and minimized heating
losses, resulting in high efficiency.
MODEL 1232
F E A T U R E S continued
Unmatched Flexibility
• Programmable for either traction or pump applications.
• Redundant hardware watchdog timers.
• Field upgradeable software.
• Reverse polarity protection on battery connections.
• Integrated Battery state-of-charge algorithm and hour meters.
• Short circuit protection on all output drivers.
• Multi-ModeTM provides user-selectable vehicle operating profiles.
• Thermal cutback, warning, and automatic shutdown provide protection to motor and controller.
• Fully-featured generic software and VCL for typical
Warehouse Truck applications is included.
• Rugged sealed housing and connectors meet IP65
environmental sealing standards for use in harsh environments.
• 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.
Robust Safety and Reliability
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.
IP65 Rated per IEC 529.
• Insulated Metal Substrate power base provides superior heat
transfer for increased reliability.
UL recognized.
• Fail-Safe power component design.
controller installed is the responsibility of the vehicle OEM.
Regulatory compliance of the complete vehicle system with the
MODEL CHART
Battery Voltage
(V)
2 Min RMS
Current Rating
(A)
2 Min RMS
Power Rating
(kVA)
1232-21XX
24
180
5.1
1232-22XX
24
200
5.7
1232-23XX
24
250
7.1
Model
SYSTEM ACCESSORIES
The Curtis Model 840 LCD
Multifunction display contains 8 large,
easy to read characters to provide
display of battery discharge (BDI),
hour meter and error messages.
Built-in backlight is also available.
The Curtis model 1352 CANbus I/O
expansion module features 9 I/O
pins, including 6 proportional valve
drivers. This module can be used to
further expand the I/O capability of
Curtis AC motor controllers using VCL.
The Curtis Model 1313 Handheld
Programmer is ideal for setting
parameters and performing
diagnostic functions.
Contact Curtis to obtain the VCL Vehicle Control Language compiler and development tools.
MODEL 1232
CONNECTOR WIRING
CAN
TERM H
CAN H
35
34
22
23
12
ENC
PHASE
A
33
11
32
21
10
SW7
SW6
20
9
RX
30
19
8
29
18
6
POT
LOW
THR POT
HI
COIL
RETURN
BRK
POT HI
+12V
27
16
5
SW1/ANA1
26
15
4
25
14
3
24
13
2
1
DRIVER SW16
3
PROP
DRIVER 1 THR
WIPER
DRIVER
I/O GND
KSI
DRIVER 2 DRIVER 4
SW2/ANA2
SW3
DIMENSIONS mm
140
+5V
28
17
7
DRIVER
7
SW4
SW5
31
TX
BRK
WIPER
DRIVER 6
SW8
CAN L
NOT
CONNECTED
ENC
PHASE B
CAN
TERM L
5x M6X1.0 -6H
20
129
4x
169
180
5.5
70.5
68.5
5.5
69.5
ø7
WIRING DIAGRAM
MODEL 1232
1232 AC Induction Motor Controller
TYPICAL WIRING
SWITCH 3
MODE
J1-10
SWITCH 4
LIFT
J1-11
SWITCH 5
LOWER
J1-12
SWITCH 6
FORWARD
J1-22
REVERSE
J1-33
J1-14
DRIVER 1
DRIVER 2
DRIVER 3
DRIVER 4
PV DRIVER
SWITCH 7
DIGITAL DRIVER 6
SWITCH 8
DIGITAL DRIVER 7
J1-6
J1-5
J1-4
J1-3
KEYSWITCH
J1-9
J1-13
PROP. VALVE
INTERLOCK
COIL
RETURN
LOAD HOLD VALVE
SWITCH 1/ANA 1
PUMP CONT
J1-24
E/M BRAKE
EM REV.
J1-1
MAIN
KSI
20A
J1-2
J1-19
J1-20
SWITCH 16
MAIN
EMERGENCY
STOP
B+
MOTOR
TEMP. INPUT
J1-8
U
SWITCH 2/ANA 2
V
POT 2
THROTTLE POT
T
J1-7
I/O GROUND
J1-15
THROTTLE
POT HIGH
J1-16
THROTTLE
WIPER
W
+5V (100mA)
ENCODER PHASE A
PHASE B
I/O Gnd
BCAN H
CAN L
CAN TERM H
J1-27
POT 2 HIGH
CAN TERM L
J1-17
POT 2
WIPER
+12V (100mA)
POT LOW
SERIAL
PORT
J1-18
BATTERY
24
AC MOTOR
TX
RX
I/O GROUND
J1-26
J1-31
J1-32
J1-7
1
2 POSITION
4 ENCODER
3
J1-23
}
J1-35
J1-21
J1-34
CAN PORT
Short for 120
Ohm Termination
J1-25
4
J1-28
3
J1-29
1
J1-7
2
}
SERIAL PORT
4 PIN MOLEX
8
6 DISPLAY
5
W A R R A N T Y Two year limited warranty from time of delivery.
is a trademark of Curtis Instruments, Inc.
Specifications subject to change without notice
©2011 Curtis Instruments, Inc.
50178 REV D 10/11
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