SC902-028-01

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The SC902-028-01 is a servo drive with a peak output power of 2.2 kW at 240 VAC and a power stage efficiency of 95%. Manufactured by Pacific Scientific as part of the SC900 Servo Drives Series, it operates within an ambient temperature range of 0°C to 25°C under convection cooling and achieves speeds up to 11,600 RPM.

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Product Description:

The SC902-028-01, a high-performance servo drive unit, was developed by Pacific Scientific, a renowned provider of industrial control and power solutions. This servo drive is designed to provide dependable and effective power management for uses that need accurate voltage control and strong performance. Its small size and high-tech features make it easy to add to a variety of systems that need reliable power delivery.

With a voltage range of 90 to 264 VAC, the SC902-028-01 servo drive can work with a lot of different power sources. It works with both single-phase and three-phase systems, so it can be used in a variety of situations. At 25°C, the drive has a constant power level of 3.75 A and a peak output current of 7.5 A, so it can handle situations with a lot of demand. The SC902-028-01 has a peak inrush current of 140 A and a pulse width of 3 msec to handle inrush currents and ensure smooth starting operations. For extra safety, it has a 15 A 250 V time-delay switch built in. The drive is made to cool itself through airflow, so it doesn't need any other cooling systems. With an AC line kVA rating of up to 100, it can handle heavy loads while still being efficient. A transformer with a kVA rating of 2 to 3 is recommended for optimal results.

The SC902-028-01 servo drive has a maximum AC line kVA of 100, which means it can handle high-power tasks without losing its steadiness. At its peak, it can send out 7.5 A of current, which shows that it can handle tough working circumstances. Its efficiency and longevity are stressed in its design and specifications that makes it a key component for industrial and automated applications.

AC input frequency range
47–440 Hz
AC input voltage range
90–264 VAC
Ambient temp range (convection)
0–25 °C at full rating
Bus nominal input voltage (3-phase)
320 VDC
Continuous output current at 25 °C (convection)
3.75 A
Continuous output current at 50 °C (convection)
2.5 A
Continuous output current at 50 °C (forced‐air)
3.75 A
Continuous output power (240 VAC 3‑phase, 25 °C conv.)
1.1 kW
DC input voltage range
130–370 VDC
Input phases
Single or three‑phase
Max recommended speed (4096 ppr)
11,600 RPM
Operating humidity (non‑condensing)
10–90% RH
Peak inrush current (zero‑to‑peak)
140 A
Peak output power at 240 VAC
2.2 kW
Power stage efficiency
95%
Resolver position signal resolution
24 bits (0.0013 arc‑min)
Shunt regulator continuous power (25 °C conv.)
20 W

Frequently Asked Questions about SC902-028-01:

Q: Why does the SC902-028-01 support three phases?

A: Supporting three phases increases flexibility for diverse power systems, enhancing compatibility with both residential and industrial applications.

Q: Does the SC902-028-01 require convection cooling?

A: Yes, convection cooling dissipates heat effectively without fans, reducing maintenance and increasing system reliability.

Q: How does the SC902-028-01 handle inrush current?

A: It manages inrush current up to 140 A with a 3 ms pulse width, ensuring safe startup without tripping protection devices.

Q: Why does the SC902-028-01 use a time delay fuse?

A: The 15 A, 250 V time delay fuse protects against surges while allowing brief inrush currents without unnecessary interruptions.

Q: Do SC902-028-01 transformers need 2-3 kVA?

A: Yes, a 2-3 kVA transformer ensures optimal performance by matching load demands without overloading the system.


Internal Product Review

  • ‘‘Pacific’s SC902-028-01 power module offers reliable performance with an inrush peak current of 140 A and a peak output current of 7.5 A. Its 15 A, 250 V time delay fuse ensures electrical safety. The recommended 2-3 kVA transformer capacity enhances operational efficiency.’’

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