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ABB SCM-1-AI Analog Input Galvanic Isolation Module

In modern industrial automation, precision is compromised by electrical noise, ground potential variations, and signal attenuation over long distances. The ABB SCM-1-AI serves as a robust shield for your control architecture. It accepts raw or unstable analog currents/voltages from field transmitters, refines the waveform using precision active filtering, and outputs an isolated, linear signal. Its fast response time makes it ideal for dynamic processes where instantaneous feedback is critical for safety and operational efficiency.

• Premium 3-Way Isolation: Full 2.5 kV AC galvanic isolation between input, output, and power supply networks prevents cross-talk and instrumentation damage.

• Universal Configurability: DIP-switches allow seamless selection between 0-20 mA, 4-20 mA, 0-5 V, and 0-10 V analog standards.

• Ultra-low Temperature Drift: Advanced compensation circuitry limits drift to $\le$ 50 ppm/K, ensuring high measurement stability across wide ambient variations.

• Compact Form Factor: 6.2 mm ultra-slim housing architecture saves up to 70% space inside the electrical enclosure.

• Input Signals: 0...20 mA, 4...20 mA, 0...5 V, 0...10 V (Switchable via DIP switches)

• Output Signals: 0...20 mA, 4...20 mA, 0...10 V (Independently scalable)

• Galvanic Isolation: 2.5 kV AC, 50 Hz, 1 min (Input / Output / Power)

• Transmission Error: 0.1% of full scale

• Response Time  < 7 ms

• Supply Voltage: 24 V DC 

• Operating Temperature: -25°C to +70°C (-13°F to 158°F)

The SCM-1-AI is extensively deployed across continuous processing industries including Chemical and Petrochemical Refining, Municipal Water & Wastewater Treatment plants, and Marine automation. It is commonly integrated to isolate heavy-duty flowmeters, pressure transmitters, and level sensors from PLC analog input cards.

• Q: Can the SCM-1-AI supply loop power to a 2-wire transmitter?

• A: No, the SCM-1-AI is dedicated to signal isolation and conversion. For loop-powered transmitters, please refer to our active sourcing isolator models or utilize an external power grid.

• Q: How do I change the input signal configurations?

• A: Signal configurations are modified via an easy-to-access matrix of DIP switches located on the side panel of the module. A configuration table is printed directly on the housing for convenience.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.