S E PA R AT E L Y E X C I T E D E L E C T R O N I C
MOTOR SPEED CONTROLLER
MODEL 1266 A/R SepEx®
FEATURES
Smooth and Secure Control
• Power MOSFET technology provides smooth, silent, efficient,
and cost-effective operation.
• Adjustable parameters enable custom optimization of speed,
torque, and braking control.
• Half bridge armature and full bridge field provides
regenerative braking down to near zero speed.
• Rugged package rated at IP5X.
• Overspeed braking (regenerative) limits speed while driving
downhill.
• WalkAway™ braking feature limits any stopped or key-off
rolling to very low speed (1266A models only). 1266R
models do not offer walkaway feature.
• System uses Hall effect speed sensor on motor or drive train
to control vehicle speed.
• Tow switch enables free rolling for towing of vehicle.
• Anti-rollback function provides improved control when throttle
is released on hills.
• Anti-stall function helps prevent motor commutator damage.
• Controller drives warning buzzer -- steady in reverse;
intermittent during WalkAway™ braking.
• MultiMode™ input provides for two speed and power modes
of operation.
DESCRIPTION
Curtis Model 1266 A/R SepEx® controllers are
programmable and microprocessor based, with an advanced
• Timed shutdown of main contactor after pedal is released and
vehicle has stopped.
MOSFET power section for smooth and seamless control of
• Current Boost provides extra power.
separately excited motors.
APPLICATION
Curtis1266 A/R SepEx controllers are designed for use in golf,
utility, or light on-road vehicles.
• Fully compatible with Curtis 1311, 1313 and 1314
Programmers for parametric adjustment, tuning, test,
and diagnostics.
• Extensive fault detection and diagnostic reporting using a
Curtis Programmer including (partial list):
– Main contactor weld check and driver check
– Throttle and wiring faults
– Open or shorted motor field winding
– Open motor armature winding
– Over-temperature
– Missing or failed speed sensor
– Armature drive failure.
www.curtisinstruments.com
pg. 1
Precharge*
500 Ohms
Pot Low
20A
M O D E L 1 2 6 6 A / R J1-10
S e p+15V
Ex®
peed Sensor
J1-9 GND
FEATURES continued
•Extensive system monitor capabilities
usingSpeed
a Curtis
J1-1
Programmer, including (partial list):
– Battery voltage
– Throttle input
J2-1
– Direction and throttle switch operation
– Motor field and armature currentsJ2-2
– Controller heatsink temperature. J2-3
J2-4
B+
OPTIONS
Main
• E/M brake.
• 5K 3-wire or 0–5V.
Arm
M−
Meets or complies with relevant US and
International Regulations
• Manufactured under ISO 9001 certified Quality
64-72V
Management System.
• UL Recognized
FieldComponent Status.
B−
S1
S2
MODEL CHART
Curtis
Model
1313 HHP
Voltage
(V)
Armature Rating
(Amp) 2 Minutes
Field Rating
(Amp) 2 Minutes
1266A-52xx
36–48
275
1266A-53xx
36–48
350
1266R-52xx
36–48
275
25
1266R-53xx
36–48
350
30
*NOTE: Resistor wattage should be selected
25
to accept the maximum system voltage.
30
PIN CHART
Pedal Fwd
Mode
Rev
Logic
Power
KSI
+15V
GND
16
9
8
1
Speed
Charger
Main
EM
brake
Inhibit
Pot Lo
Alarm
Throttle Pot Hi
pg. 2
MODEL 1266 A/R SepEx®
TYPICAL WIRING DIAGRAM 36–48V
Charger Inhibit
J1-8 Charger
Inhibit
J1-13 Pedal
Pedal
Forward
Keyswitch
KSI J1-15
Main J1-7
Main Coil
J1-12 Forward EM Brake J1-2
EM Brake (opt)
J1-11 Reverse
Reverse
Alarm
J1-13 Mode
Mode
Pot Hi
Alarm J1-3
Logic Power J1-16
Run/Store
Throttle
Throttle
Precharge*
500 Ohms
Pot Low
20A
J1-10 +15V
Speed Sensor
J1-9 GND
B+
Main
J1-1 Speed
J2-1
M–
Arm
J2-2
J2-3
J2-4
36-48V
B–
Field
+
-
S1
S2
1313 HHP
*NOTE: Resistor wattage should be selected
to accept the maximum system voltage.
pg. 3
MODEL 1266 A/R SepEx®
DIMENSIONS mm
198
156
25
98
7.14
Ø 3 PLACES
28
79
57.1
11
16
173
70 Max
51
6 Max
198
S1
B-
S2
M-
B+
Model
Heat Sink
Thickness
Overall
Height
1266A/R-52xx
4 mm
68 mm
1266A/R-53xx
6 mm
70 mm
114
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
©2013 Curtis Instruments, Inc.
50145 REV F 9/13