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Curtis Controllers Model 1221B

The electronic motor speed controllers from Curtis Controller Model 1221B operate at a high frequency of 15 kHz, making these controllers a noiseless and cost-efficient choice as they permit smooth control of brake, torque, and speed. It is designed to suit various industrial applications such as vehicles used for material handling and on-road cars.


The Curtis Controllers Models under 1221B have nominal voltage options from 24-36 volts, 36-48 volts, 48-72 volts, and 48-80 volts and a current limit ranging from 500-600 amperes. It weighs 4.9 kg and is 282 mm in length, 180 mm in width, and 80 mm in depth. The Curtis Model 1221B provides a better driving experience due to key features and optional features, which can be added according to the preferences and application demands.


The Curtis 1221B controllers can now be purchased here in Cloud Electric, your one-stop shop for all your electric component needs. Cloud Electric is a leading distributor of electronic components in North America. We take pride in our informative product descriptions, pricing, and shipping speed.

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Curtis 24/36V 600A (0-5K) PMC 1221B-4801 Curtis 24/36V 600A (0-5K) PMC 1221B-4803 Curtis 36/48V 550A (0-5K) PMC 1221B-5701
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Curtis 36/48V 550A (6-11V) PMC 1221B-5702 Curtis 36/48V 550A (5K-0) PMC 1221B-5703 Curtis 36/48V 550A (5-10V) PMC 1221B-5704
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Curtis 36/48V 550A (0-5K) PMC 1221B-5705 Curtis 36/48V 550A (5K-0) PMC 1221B-5706 Curtis 36/48V 550A (5K-0) PMC 1221B-5707
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Curtis 48/72V 500A (0-5K) PMC 1221B-6601 Curtis 48/72V 500A (0-5V) PMC 1221B-6602 Curtis 48/72V 500A (0-5V) PMC 1221B-6603
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Curtis 48/72V 500A (0-5K) PMC 1221B-6604 Curtis 72/120V 400A (0-5K) PMC 1221B-7401 Curtis 72/120V 400A (0-5K) PMC 1221B-7402
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Curtis 72/120V 400A (0-5K) PMC 1221B-7403 Curtis 72/120V 400A (0-5V) PMC 1221B-7404 1221B-6601 : Curtis Controller 48/72V 500A (0-5K) PMC  #1221B-6601
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1221B-5701 : Curtis Controller 1221B-5701 36/48V 550A (0-5K) PMC
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SPECIFICATIONS

NOMINAL VOLTAGE RANGE

24-80 V

CURRENT LIMIT RANGE

500-600 A

STANDBY CURRENT

20 mA

OPERATING FREQUENCY

15 kHz

TEMPERATURE RANGE DURING OPERATION

-25C to 75C

WEIGHT

4.9 kg

DIMENSION

  • Length

282 mm

  • Width

180 mm

  • Depth

80 mm


FEATURES

Feature

Purpose

Brake Control and Variable Drive Speed

Allows accurate vehicle control for an improved driving experience

Power MOSFET

Highly efficient and noiseless operation

Protection and Compensation Circuit for Temperature

Allows stable current limit and cutback function for during under and over temperature condition

Cutback Function (Undervoltage)

Provides protection from low battery voltage (internal and/or external)

Circuitry for Fault Detection

Helps in preventing runaway conditions and monitors components such as the battery, and a bypass contactor, among others

Easy Installation

No further alterations

Tin-plating (Bus Bars)

Protection for solid copper bus bars

Push-in Connectors

Allows control wiring



OPTIONAL FEATURES

Feature

Purpose

High Pedal Disable

Allows a safe start by monitoring the status of the throttle. If the vehicle is started with an applied throttle, this feature disables it from operating until the throttle is returned to a neutral position



DIMENSIONS



WIRING DIAGRAM