1225.pdf
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PERMANENT MAGNET
MOTOR SPEED CONTROLLERS
MODELS 1225/1235
FEATURES
•
Full bridge power MOSFET design provides infinitely variable
forward, reverse, drive and brake control; silent high frequency
and high efficiency operation.
•
Programmable through the Curtis PMC 1311 or 1314 handheld
programmer, an optional universal unit used for programming,
testing and diagnostics.
•
Complete diagnostics also available through the PowerOn LED.
•
Fully compliant with all applicable international standards
and TÜV requirements.
•
Available for wig-wag (center off) and single ended (speed
pot and direction switch) throttles for both standard full stroke
and restricted range 5k�½ potentiometers. Also accepts 0-5v
throttle signals.
•
Throttle calibration mode aids the mechanical centering of the
throttle using the 1311 programmer to enter the mode. The
horn will sound and the status LED will be off whenever the
throttle is outside the neutral band.
•
MultiMode™ input selects between two different operating
modes. MultiMode™ allows changes in speed, accel, decel,
current limit, and IR compensation. This allows optimization
of vehicle characteristics in each mode, for example indoor/
outdoor.
•
Speed limit input provides additional variable speed limiting,
in both mode ranges, with an external pot.
•
Linear acceleration and deceleration with softened response
for smooth operation.
•
Current limited in both driving and regenerative braking.
•
Load compensation stabilizes speed on ramps and over
obstacles. Compensates for battery voltage, voltage drops,
and motor resistance.
DESCRIPTION
Models 1225/1235 are advanced, programmable,
microprocessor based motor speed controllers housed in a
rugged, sealed, aluminum enclosure. Four quadrant, full bridge
power output stages provide solid state motor reversing and full
regenerative braking power. Model 1225 provides extensive
standard features (•). Model 1235 provides additional features
(••) for special industrial applications.
APPLICATION
Models 1225/1235 advanced motor speed controllers are
designed for permanent magnet motors, such as those used by
mobility aids, scrubbers, personnel carriers, small walkies, etc.
They offer smooth, silent, cost-effective control of motor speed
and torque.
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MODELS 1225/1235
FEATURES continued
•
High pedal disable (HPD) function monitors status of the
throttle during turn on and prevents operation until the throttle
has been returned to neutral.
•
Power off decel provides a controlled deceleration if the key
switch is turned off while driving.
•
Comprehensive fault detect function monitors main contactor,
output stage, throttle demand vs. output, etc.
•
Throttle fault circuitry shuts off controller if throttle signal goes
out of range for any reason.
•
Missing brake detector forces neutral in the event of an open
brake circuit (programmable).
•
Anti rollback/roll forward circuitry sets brake delay according
to speed and direction for improved braking response and
minimized rollback on hills, etc.
•
Over-current protected brake driver protects the controller
from shorts in the brake or its wiring. This low side output
driver may also be programmed for side broom or brush
contactor, hourmeter, BDI enable, etc.
•
Brake PWM allows the brake driver to be programmed to a
reduced holding voltage.
•
Reverse output drives a piezo beeper (customer supplied) in
reverse.
•
“Push Too Fast” feature allows motor to coast with controller
off and brake released. Pushing too fast automatically and
safely shorts the motor to limit maximum coasting speed.
•
Push input electrically releases brake for key-on pushing
(requires that the vehicle be stopped first).
•
Inhibit input disables the controller and puts the vehicle in a
safe state during charging, etc.
•
Power saver deactivates the main relay after 25 seconds and
entire controller after 25 minutes of non-operation.
•
Under voltage cutback function protects against low battery
voltage.
•
Thermally protected and compensated for stable output and
overtemperature protection.
•
Reverse polarity protected (battery input).
Model 1235 Only
•• SRO input sequencing options.
•• Emergency reverse (belly button) input causes immediate reversal.
•• Programmable high side driver output for brake light, belly
button check, BDI enable, hourmeter, side broom contactor, etc.
MODEL CHART
Curtis PMC
Models
1225-21XX
1225-24XX
1225-27XX
1225-31XX
1235-21XX
1235-24XX
1235-27XX
1235-31XX
Nominal
Battery
Voltage (V)
24
24
24
36
24
24
24
36
1 Minute
Current Rating
(Amps)
65
100
125
90
65
100
125
90
1 Hour
Current Rating
(Amps)
50
60
70
50
50
60
70
50
Typ. Voltage
Drop @ 20A (V)
0.45
0.30
0.25
0.25
0.45
0.30
0.25
0.25
Under Voltage
Over
Cutback (V)
Voltage Limit
(V)
16
16
16
21
16
16
16
21
36
36
36
48
36
36
36
48
TÜV COMPLIANCE
This Curtis product complies with the regulations of TÜV, the German service company which tests products and sets standards for product
safety and quality. EMC compliance depends upon the installation and is the responsibility of the equipment manufacturer. Shielding
may or may not be needed. When installed with the recommended shielding, the controller itself will meet TÜV EMC requirements. The
deceleration adjustment must be set to meet all applicable TÜV braking distance requirements.
MODELS 1225/1235
DIMENSIONS mm
127 (5.0")
116 (4.58")
47 (1.85")
148 (5.83")
159 (6.25")
TYPICAL WIRING DIAGRAM
MULTI
POWER REVERSE MODE
DIRECTION/
LOCK DETENT
REVERSE
PROGRAM
POWER SW/
MULTIMODE
2
DRIVER
STATUS LED
SWITCH
KSI
FWD
CONNECTOR PINOUT
HORN
KEYSWITCH
BB HORN
16
9
1
H
PIEZO
BUZZER
CONTROL
FUSE
8
BRAKE +
INHIBIT
PROGRAM
1
DRIVER
WIPER
SPEED
LIMIT
PUSH
POT LO
POT HI
M
M2
PROGRAMMER
BRAKE
M1
B-
B+
MATING CONNECTORS
.
16-PIN MOLEX MINI-FIT JR
CONNECTOR,
PART NUMBER 39-01-2160
OR 39-01-2165
USING TYPE 5556 TERMINALS
THROTTLE 5k Ω
SPEED
LIMIT
100k Ω
BA
TTERY +
BRAKE RELEASE
INHIBIT
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
©2008 Curtis Instruments, Inc.
50014 REV E 4/09
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