PROGRAMMABLE SERIES MOTOR CONTROLLERS
MODELS 1204M / 1205M / 1209M / 1221M
1205M
1204M
FEATURES
Controllable Power
• Pulse Width Modulation (PWM) control with programmable
speed, acceleration rate, and current limit.
• Short duration boost capability (5 sec, 110% of 2 min current
rating). Allows clearing of obstacles, climbing ramps.
1221M
1209M
• High efficiency, silent operation. Costs, heat-sinking
requirements, motor and battery losses reduced. Low-end
torque, range, and battery life maximized.
Programmable and Flexible
• Fully programmable via Curtis hand-held tools or Curtis PC
programming software model kits 1314K.
• Supports multiple throttle types and high pedal disable
(HPD) options.
• LED output for easy system troubleshooting via flash codes.
• Fully programmable analog throttle input for precise speed
control with a variety of signal sources.
DESCRIPTION
Curtis Models 1204M/1205M/1209M/1221M provide
fully programmable control of DC series motors performing
on-vehicle traction or pump duties. These microprocessor-based
MOSFET controllers add flexibility and versatility to the timeproven Curtis series motor controller family.
•Programmable under voltage cutback caters for different
battery types.
• Programmable, variable, or fixed plug braking modes.
• Plug braking diode internal to controller.
• Models available without A2 busbar for applications such
as pump control that do not require plug braking.
APPLICATION
Primarily designed for battery-powered vehicle applications
using either electric or hydrostatic traction. These include
industrial trucks, personnel carriers, mobile elevating work
platforms, and golf and utility vehicles.
www.curtisinstruments.com
pg. 1
MODELS 1204M / 1205M / 1209M / 1221M
FEATURES cont’d
Robust Safety and Reliability
•Redundant hardware and software watchdog timers.
• Under voltage cutback and shutdown functions protect against low
battery voltage, including low voltage caused by external loads.
•MOSFET short-circuit protection functions.
• Electrical isolation to heat sink: 500VAC(≤48V);1000VAC
(›48V).
•Programmable High Pedal Disable function prevents controller
operation if throttle is applied before key is turned on.
• Contactor fault detection: controller shuts down safely if the
main contactor opens.
•Contactor protection functions minimize high current arcing to
prevent contact pitting and thus prevent contactor weld failures.
•PWM frequency shifts from 15.6kHz to 1kHz in high temperature
of controller, providing audible warning of thermal cutback.
Compliance
• EMC: Designed to the requirements of EN12895.
• Package environmental rating: IP54.
• Certified to UL 583.
• Regulatory compliance of the complete vehicle system with the
controller installed is the responsibility of the vehicle OEM.
MODEL CHART
Model No.
Voltage (V)
Current Limit (A)
5 Sec Boost
2 Min
1 Hour
1204M–42xx
24 / 36
303
275
125
1204M-53xx*
36 / 48
358
325
140
1204M–63xx*
48 / 72
358
325
140
1205M–46xx
24 / 36
550
500 (30 Sec)
175
1205M–56xx*
36 / 48
550
500 (1 Min)
200
1205M–-6B4xx
60 / 72
440
400 (1 Min)
175
1209M–55xx
36 / 48
495
450
200
1209M–64xx
48 / 72
440
400
175
1221M–67xx
48 / 72
605
550
225
NOTE: Boost rating dependant on programmed current limit max value. Values shown assume max current limit setting.
*UL583 certification pending
SYSTEM ACCESSORIES
Curtis Model 906 is an inexpensive,
one piece, easy to install battery
fuel gauge that provides a reliable,
accurate, and easy to read display
of battery state-of-charge.
The Curtis Pot Box is a building
block for a vehicle throttle.
Attached to a lever arm, the pot
box provides the controller with a
proportional resistance to indicate
the desired speed.
The Curtis Model 1313 Handheld
Programmer is ideal for setting
parameters and performing
diagnostic functions.
pg. 2
MODELS 1204M / 1205M / 1209M / 1221M
DIMENSIONS mm
Model 1204M and Model 1205M (1205M dimensions same as 1204M except for those shown in blue)
+2.0
−0.5
+2.0
173
−0.5
199
133.3
25.0±2.0
22.2±2.0
ø8.5
B−
130.3
146.0
B+
4−ø7.2
77.0
A2
pg. 3
MODELS 1204M / 1205M / 1209M / 1221M
DIMENSIONS mm
Model 1209M and Model 1221M (1221M dimensions same as 1209M except for those shown in blue)
281 ±2.0
229 ±2.0
25.0
36.3
37.0
152.4
203.0
9.6
B−
2-Ø8.5 THRU
180.0
165.0
B+
22.8 ±2.0
4-Ø7.2 THRU
M−
Ø8.5 THRU
80.0
pg. 4
MODELS 1204M / 1205M / 1209M / 1221M
TYPICAL WIRING — PUMP
INTERLOCKS
J1
J2
KEYSWITCH
POLARITY
PROTECTION
DIODE
FUSE
MAIN
KSI
FUSE
B+
THROTTLE
POT WIPER
PRECHARGE RESISTOR
A1
J3
THROTTLE POT
THROTTLE
POT LOW
MOTOR
ARMATURE
A2
A2
+
S1
MOTOR
FIELD
4
+15V
3
SERIAL PORT
4-PIN MOLEX
J4
Tx
2
S2
–
M–
GND
1
Rx
J5
MAIN DRIVER OR
REVERSE INPUT
B–
pg. 5
MODELS 1204M / 1205M / 1209M / 1221M
TYPICAL WIRING — TRACTION
INTERLOCKS
KEYSWITCH
POLARITY
PROTECTION
DIODE
FUSE
MAIN
J1
J2
J3
THROTTLE POT
KSI
FUSE
PRECHARGE RESISTOR
THROTTLE
POT WIPER
B+
A1
A2
MOTOR
ARMATURE
THROTTLE
POT LOW
A2
F
R
+
MOTOR FIELD
S1
S2
–
SERIAL PORT
4-PIN MOLEX
J4
F
4
+15V
3
Tx
2
GND
1
R
M–
Rx
B–
J5
PEDAL
MICROSWITCH
F
MAIN DRIVER OR
REVERSE INPUT
FORWARD
R
REVERSE
WA 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.
50211 REV A 3/13
pg. 6