21BRCX-320-H 28A

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The 21BRCX-320-H 28A resolver by Danaher is a part of the Dynapar Resolvers series, featuring a 21 frame size with an approximate outer diameter of 2.1 inches. It boasts a transformation ratio of 320:1, an input voltage of ±5% V rms, and operates within a temperature range of -40°C to +100°C.

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Product Description:

This 21BRCX-320-H 28A frameless resolver introduced by Danaher encompasses a pancake design. The product is delivered without brushes or a frame. This device comes with one single servo groove for secure installation and mounting. The unit delivers accurate position feedback by measuring the angular positions of the output shaft. It is primarily deployed in industrial and aerospace applications. This resolver depicts durability even in harsh environments because of its steel housing.

The product triggers an output signal that has an infinite resolution. This device depicts enhanced reliability when it is deployed for commutation. The unit is suitable for limited rotation applications when it is used without a rotary transformer. It can be considered as an alternative for shaft angle encoding. This resolver is capable of functioning in contaminated environments. The product’s output signal is generated when its input phase is energized with an AC voltage. This device resolves a vector into cosine and sine components. The unit allows operation as a substitute for an incremental or absolute encoder when an analog-to-digital converter is used. Its lack of onboard electronics makes it worth considering for utilization in radiated environments.

This resolver is operated where applications have high acceleration. The product has great shock loading resistance and is more durable than an encoder. This device has high accuracy and is tolerant to misalignment. The unit can be tested by using an ohmmeter to determine resistance in its coils. It helps to control the resolution and amplitude of pulses. This frameless resolver has high consistency and durability at the same time.

Connector Type
10-pin industrial duty latching sealed (NEMA 4/12)
Excitation Frequency
≈10 kHz
Frame Size
21 (OD ≈2.1 in)
Input Current
40–70 mA rms
Input Voltage
±5% V rms
Lead Wire Size
28 AWG
Noise Immunity
EN61326-1
Null Voltage
20 mV rms
Operating Temperature Range
-40°C to +100°C (opt. +120°C)
Phase Shift
Rotor Resistance
22 Ω
Stator Resistance
74 Ω
System Type
BRCX rotor primary, single/multiple speeds
Transformation Ratio
320:1

Frequently Asked Questions about 21BRCX-320-H 28A:

Q: What is the rotor of the 21BRCX-320-H 28A resolver supplied with?

A: The 21BRCX-320-H 28A resolver is supplied with a sleeve.

Q: What connectors does the 21BRCX-320-H 28A resolver have?

A: The 21BRCX-320-H 28A resolver has MS-style connectors.

Q: What signals does the 21BRCX-320-H 28A resolver generate?

A: The 21BRCX-320-H 28A resolver generates analog signals.

Q: What kind of resolver is the 21BRCX-320-H 28A resolver?

A: The 21BRCX-320-H 28A resolver is a heavy-duty frameless resolver.

Q: Why does the 21BRCX-320-H 28A resolver support high operating temperatures?

A: The 21BRCX-320-H 28A resolver supports high operating temperatures because it has no onboard electronics.


Internal Product Review

  • ‘‘The 21BRCX-320-H 28A encoder features a high accuracy rate. Its high shock and vibration resistance ensures its durability. While it is more reliable than an encoder, its cost factor cannot be ignored.’’

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