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Control Techniques Unidrive SP 1220-2756-01

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1220-2756-01

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The Control Techniques 1220-2756-01 is an internal dynamic braking resistor designed for the Unidrive SP series. It features a nominal resistance of 75 Ω and operates with a continuous power rating of 50 W.

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Technical specifications for 1220-2756-01

ManufacturerControl Techniques
Product LineUnidrive SP
Part Number1220-2756-01
Weight0.31 lbs (0.14 kg)
Product CategoryInternal dynamic braking resistor
Nominal Resistance75 Ω (±5% tolerance)
Continuous Power Rating50 W
Connection Scheme2-wire interface
Surge Voltage EnduranceWithstands up to 3500 V peak
Ambient Temperature Range–10°C to +40°C
Max Junction TemperatureUp to 150°C
Cooling MethodPassive air-cooling
Mounting ConfigurationIn-panel/internal installation
Overload CapabilityHandles surges up to 150% of rated power
Thermal ResponseThermal time constant ~10 seconds
Insulation RatingClass F standard
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The 1220-2756-01 model by Control Techniques is categorized as an internal dynamic braking resistor for use with the Unidrive SP series. With a nominal resistance of 75 Ω, it offers a tolerance of ±5%, ensuring reliability in various applications. This unit is rated for continuous power at 50 watts, providing adequate performance for standard uses.

Designed for installation within control panels, it utilizes a 2-wire interface for simple connectivity. The resistor can withstand high surge voltages, enduring peaks of up to 3500 V, making it suitable for environments subject to electrical irregularities. Operating conditions allow for a temperature range of –10°C to +40°C, while it can tolerate maximum junction temperatures reaching 150°C.

Passive air-cooling is implemented to manage heat dissipation effectively, making it efficient in maintaining stable performance. Additionally, this model demonstrates superior overload capacity by managing surges up to 150% of its rated power, which enhances its versatility. The thermal response of the unit has a time constant of approximately 10 seconds, which maintains responsiveness under varying thermal loads. Meeting Class F insulation standards, this braking resistor ensures durability and stability in demanding applications.