422

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The 422 DC servo amp offers an output power peak of ~20A at ~170V, a continuous power of ~10A at ~170V, and operates within a supply voltage range of 24-180 VDC. Part of the DC Servo Amplifiers by Copley Controls, it boasts protective features like output short circuit prevention, overtemperature protection, and undervoltage shutdown.

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Product Description:

The Copley Controls-engineered 422 DC servo amplifier comprises an internal socket with 40 pins for its configuration. This amplifier latches itself off when there is a short circuit at the output. The product has a minimum setting of 16% for the continuous current. This device comprises brushes to support its operation. The unit can be checked for oscillation by applying +/-1 V, 10 Hz square wave signals to its reference inputs. It is important to disconnect the power from the amplifier when changing the parts of its header. This amplifier is used in automatically guided vehicles and automated assembly machinery.

This product comes equipped with latch-off and self-reset fault protection mode when the temperature rises above the ambient limits. The device tends to latch off when the Reset input is in the open state. This unit features a logic threshold voltage of 2.5 V with low to high transition. It performs an undervoltage shutdown when the voltage dips to less than 22 V. This amplifier should be operated only with the motors specified in its manual. This amplifier is equipped with a RS 422 interface for communication. The product is used in aerospace and industrial automation related applications. This device supports velocity, voltage feedback, and torque control modes with IR compensation. The unit can withstand harsh environmental conditions because of its rugged design. It has full peak current and continuous current limits when the RH15 and RH16 components are in the open state.

This servo amplifier should be operated only by people with the relevant expertise. The product has a maximum LO output voltage of 0.5 V at 5.2 A max. This device allows setting the peak current limit according to the commutation or thermal limit of the motor. The unit-related velocity loops are used in position control loops where high regulation is required at a low speed. Its header parts can be changed without any soldering.

Bandwidth (current Mode)
3kHz with 200uH load at maximum supply voltage
Bandwidth (voltage-feedback Mode)
200Hz max
Indicators
Normal (Green), Power OK (Green), Fault (Red)
Load Inductance
200 uH to 40mH
Logic Input Voltage Range
0 to +24V
Logic Threshold Voltage
2.5V (Schmitt trigger inputs with hysteresis)
Monitor Outputs
Current Monitor, Current Ref, Voltage Monitor
Output Power (continuous)
~10A @ ~170V
Output Power (peak)
~20A @ ~170V
Output Voltage
~Vout = (~HV) x (0.97) - (Ro) x(Io); Ro = 0.2
Peak Time
1 sec at peak power or 2 secs after polarity reversal
Protective Features
Output short circuit, overtemperature, undervoltage shutdown
Pwm Switching Frequency
25kHz
Reference Input
Differential, 100K between inputs, ~20V maximum
Supply Voltage Range
24-180 VDC

Frequently Asked Questions about 422:

Q: What is the pull-up input resistance of the 422 servo amplifier?

A: The pull-up input resistance of the 422 servo amplifier is 10K.

Q: What is the certification of the 422 servo amplifier?

A: The 422 servo amplifier is cUL Recognized.

Q: What is the default direction of rotation of the loop gain potentiometer of the 422 servo amplifier?

A: The default direction of rotation of the loop gain potentiometer of the 422 servo amplifier is counterclockwise direction.

Q: What is the continuous power of the 422 servo amplifier?

A: The 422 servo amplifier has a continuous output power of +/-10 A at +/-80 V.

Q: What kind of amplifier is the 422 servo amplifier?

A: The 422 servo amplifier is a DC servo amplifier with brushes.


Internal Product Review

  • ‘‘The 422 servo amplifier can be operated in torque mode for use with motors featuring digital control cards. It can be customized for a vast load range by using the components of its internal header socket. The amplifier uses potentiometers and DIP switches to incorporate several settings. ’’

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