P325
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The P325 is a 5-pound drive with a 4-phase bilevel constant current design and a maximum heatsink operating temperature of 65°C. Manufactured by Danaher, it is part of the Controllers and Drives series and supports an input voltage of 115 VAC at 60 Hz. The P325 features a resolution of up to 25600 steps per revolution.
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Product Description:
The Danaher’s API series servo drive P325 is designed for hybrid stepper motors with six or eight leads. Its supply requirement is 115 V AC at 60 Hz and it integrates a cooling heatsink for thermal management. The drive weighs about 5 lbs, with a size of 4.25 x 5.0 x 10.0 inches and its case temperature limit is under 65°C during operation.
The P325 drive provides motor currents adjustable from 0.9 to 4.0 A/phase and its supported motors must have a minimum inductance of 0.5 mH. It supports NEMA 17 to NEMA 42 motors and its typical torque range is 15 to 800 oz.in. The unit matches the motor’s winding resistance and rated bifilar current through DIP switch settings. Its current increments can be set in steps of 0.1 to 1.6 A above the base level of 0.9 A. It offers micro-step resolutions from 200 to 25600 steps per revolution and it allows step angles from 1.8 degrees down to 0.014 degrees. This P325 drive accepts step input pulses up to 1 MHz of frequency and its required minimum pulse width of 1 microsecond. Its direction input requires a stable state before the first pulse and the provided enable input switch instantly on/off the current of motor. The unit’s low power input reduces holding current to 25% - 33% with the VCO option.
The P325 drive provides onboard velocity control with ramping feature that is adjustable between 100 ms to 5 seconds and its ramp ratio is selectable up to 50:1. It comes with a 3-pin and 7-pin connector for power input and motor output, respectively. The unit offers an 8-pin logic input for step, direction, enable and low power functions. It requires a +5 V logic supply for opto input and its fault transistors protects from over current, over temperature and under voltage conditions.
Frequently Asked Questions about P325:
Q: How does the DIP switch setting benefit the P325 drive configuration?
A: The DIP switches in the P325 allow users to match winding resistance and rated bifilar current, ensuring efficient motor performance. This makes it easier to fine-tune the drive to different hybrid stepper motors.
Q: Why does the P325 use opto-isolated logic inputs?
A: The opto-isolated inputs protect the drive’s control circuitry from electrical noise and voltage spikes. This enhances reliability in industrial environments with multiple electronic devices.
Q: What is the purpose of the VCO option in the P325 drive?
A: The VCO option reduces holding current to 25% or 33%, lowering heat generation when the motor is idle. This feature also helps extend motor life in long duty-cycle applications.
Q: How does the onboard velocity control improve motion handling?
A: The P325 drive provides adjustable ramping from 100 ms to 5 seconds with selectable ratios. This smoothens acceleration and deceleration, reducing mechanical stress on the load.
Q: What advantage does the 1 MHz step pulse acceptance provide in the P325?
A: With support for high-frequency pulses, the P325 enables faster positioning speeds. This allows high-resolution applications such as pick-and-place or PCB drilling to operate efficiently.
