ACJ-090-12
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The ACJ-090-12, a drive from Copley Controls' Accelnet Series, utilizes a 3-phase MOSFET inverter PWM type. It supports a voltage range of 20 to 90 Vdc, peaks at 12 Adc current, and provides 533 W of continuous output power. The unit, weighing 0.14 kg, also features digital control loops for current and velocity.
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Product Description:
The ACJ-090-12 DC servo drive is engineered for applications demanding robust motor control and accurate performance. It supports advanced servo mechanisms with high efficiency functionality and compact design.
This Accelnet series servo drive incorporates digital and analog motor encoder inputs using differential line receivers with R-C filtering. It terminates input signal pairs with a 121 resistor to ensure compatibility with cable characteristic impedance. It also features hall signal inputs (U, V and W) sourced from magnetic sensors or encoders which operate at lower frequencies for feedback and commutation initialization. The drive's PWM output employs a 3 phase MOSFET inverter with a 15 kHz center weighted PWM and space vector modulation to deliver smooth operation. The PWM ripple frequency is optimized at 30 kHz to enhance motor control efficiency. Protection is built in with current limiting to 750 mA at 1 V DC under overload conditions. It ensures that encoder position data is retained by deriving power from a + 24 V DC source even during AC mains power interruptions.
The Copley Controls ACJ-090-12 DC servo drive provides a dedicated encoder power supply rated at + 5 VDC with a 400 mA output to power encoders and Hall sensors. The motor cabling recommendations include shielded twisted pair cables for noise rejection and optimal signal integrity. Encoders utilize A-/A, B-/B, and X-/X twisted pairs for differential outputs that ensures accuracy and immunity to electrical noise. This servo drive is designed to meet the demands of precision applications. It incorporates robust protections and high performance features for efficient motor control and feedback. It is a reliable solution for industrial automation applications requiring accurate and continuous operation under varied load conditions.
Frequently Asked Questions about ACJ-090-12:
Q: What encoder inputs does the ACJ-090-12 DC servo drive support?
A: The ACJ-090-12 supports digital and analog encoder inputs using differential line receivers. It uses R-C filtering and a 121 resistor for signal compatibility.
Q: How does the ACJ-090-12 ensure smooth motor operation?
A: The ACJ-090-12 employs a 3-phase MOSFET inverter with 15 kHz PWM and space vector modulation. Its optimized 30 kHz ripple frequency enhances motor control efficiency and performance.
Q: What protections are built into the ACJ-090-12 DC servo drive?
A: The ACJ-090-12 provides overload current limiting at 750 mA with 1 V DC. It retains encoder data by utilizing +24 V DC power during AC mains interruptions.
Q: What type of motor cabling does the ACJ-090-12 recommend?
A: The ACJ-090-12 recommends shielded twisted pair cables for noise rejection and signal integrity. It uses differential A-/A, B-/B, and X-/X twisted pairs for accurate encoder outputs.
Q: What encoder power does the ACJ-090-12 provide?
A: The ACJ-090-12 features a dedicated +5 VDC power supply with 400 mA output. This supports powering encoders and Hall sensors for reliable feedback and commutation.
