1268_RevC.pdf

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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 1268 SepEx
®
FEATURES
• 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 zero speed.
• Sealed
package rated at IP64 and IP67.
• Overspeed
braking (regenerative) limits speed while driving
downhill.
• WalkAway™
braking feature limits any stopped or key-off
rolling to very low speed.
• 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.
• Optional
electromagnetic brake output.
• Optional
brake light output.
DESCRIPTION
Curtis PMC Model 1268 SepEx® controllers are programmable
and microprocessor based, with an advanced MOSFET power
section for smooth and seamless control of separately excited
motors.
• MultiMode™
inputs provide for multiple speed and power
modes of operation.
• Timed
shutdown of main contactor after pedal is released and
vehicle has stopped.
• LED
status indicator with external output.
• Fully
compatible with 1311, 1314 and 1307 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.
APPLICATION
Curtis PMC 1268 SepEx® controllers are designed for use in
heavy-duty golf/utility vehicles.
www.curtisinstruments.com
MODEL 1268 SepEx
®
FEATURES continued
• Extensive
system monitor capabilities using a Curtis
Programmer, including (partial list):
– Battery voltage
– Throttle input
– Direction and throttle switch operation
– Motor field and armature currents
– Controller heatsink temperature
• Brake
lamp relay to drive external lights for visual indicator of
braking conditions.
• Electromagnetic
brake at 24V or 48V (programmable) to lock
vehicle at rest.
• WalkAway™
braking feature to slow vehicle during key-off.
• 5K
3-wire, 0-5V, or ITS throttle.
Meets or complies with relevant US and
International Regulations
• Manufactured
under ISO 9001 certified Quality Management
System.
• UL
Recognized Component Status.
OPTIONS
• External
LED for remote status indicator.
• Warning
buzzer for audible indicator of reverse and
WalkAway™ modes.
MODEL CHART
Curtis PMC Model
1268-54xx
1268-55xx
Voltage
(Volts)
36-48
36-48
Armature Rating
(Amps) 2 Minute
400
500
Field Rating
(Amps) 2 Minute
50
50
EM
BRAKE COIL
(OPTIONAL)
MAIN
CONTACTOR COIL
LOW
FASTER
LED
(OPTIONAL)
0-5K
THROTTLE
HIGH
MOTOR
SPEED SENSOR
+
O
U
T
TYPICAL WIRING DIAGRAM
-
24
12
13
1
6
3
4
1
PROGRAMMER
INTERFACE
R
J1
J2
J3
N
F
MODE
SWITCH
STATUS
DIRECTION
SWITCH
PEDAL
F1
B-
M-
B+
F2
BRAKE
LAMP
RELAY
COIL
REVERSE
ALARM
KEYSWITCH
-
RELAY
(OPTIONAL)
+
RELAY
COIL
A
ARMATURE
FIELD
-
MAIN
CONTACTOR
+
-
+
POWER FUSE
(OPTIONAL)
WALKAWAY
FUSE
(20 AMP)
ENABLE
SWITCH
(5 AMP)
BATTERY
CHARGER
INTERLOCK
SWITCH
(OPTIONAL)
{
MODEL 1268 SepEx
®
DIMENSIONS mm
96 (3.79)
59 (2.33)
27 (1.05)
M8 THREAD
3 PLACES
M6 THREAD
2 PLACES
.281 DIA.
4 PLACES
28 (1.12)
40 (1.57)
C
L
178 (7.00)
159 (6.25)
40 (1.57)
28 (1.12)
210 (8.25)
229 (9.00)
81 (3.18)
13 (.50)
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.
50139 REV C 10/08

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