Modul Termokopel | DSAI155 57120001-HZ | ABB

Technical Specifications

The ABB DSAI 155 57120001-HZ is a high-precision analog input module for use in industrial automation systems. It enables the acquisition of analog signals from field devices such as sensors and transmitters, supporting a wide range of signal types including voltage (0–10 V), current (4–20 mA), and resistance inputs. This module is part of ABB’s digital signal acquisition family, engineered for reliable performance in demanding process environments.

Troubleshooting & Comissioning Checklist

Cold Junction Compensation: Confirm that the CJC sensor (often a Pt100 or thermistor built into the connection terminal blocks) is properly mounted and wired.
Shielding & Grounding: Verify that thermocouple extension wires or compensating cables have their shields grounded at one point only (typically at the I/O connection unit) to eliminate ground loops.
Termination Unit: Check that the corresponding connection unit is securely attached via the ribbon cable.

Field Engineering Considerations

Cable Routing: Analog input cables should be routed in shielded twisted-pair conduits. They must be kept physically separate from high-voltage AC lines to prevent electrical noise coupling.
Grounding: Field cable shields must be grounded at the dedicated cabinet ground bar before applying operational power.
Isolated Inputs: The module features isolated inputs to enhance signal integrity and provide a layer of protection against electrical interference.

Technical FAQ

Q: What are the primary functions of the DSAI155?
A:It acquires low-level temperature signals from field thermocouples and converts these continuous physical variables into digital data for the CPU. It is used for monitoring, control loops, alarms, and historian functions.

Q: How many channels does the module support?
A: The module features 14 channels dedicated to thermocouples.

Q: Which control systems is it compatible with?
A:It is foundational to the Advant Master process control networks and is primarily used with the Advant Controller 400 / 450 Series.

Q: Do you supply brand-new, original parts or second-hand refurbished items?

A: Our stock consists of Original New items; all products undergo quality inspection to ensure they are fully functional.

Q: What guarantees are included with the shipment?
A: All items in stock are tested by engineers, packed in professional ESD packaging, and shipped via express logistics with a global delivery time of 24–48 hours.

Q: How long does global shipping take?
A: Stock items are typically dispatched within 24 hours. Shipments are sent via DHL or FedEx Express, taking approximately 3–5 days to reach Asia, 4–6 days to Europe and the Middle East, and usually arriving within a week in major industrial regions worldwide.

Q: If the model I need is not listed on the website, can I request a quote?
A: Yes. We hold over 200,000 SKUs of industrial spare parts in stock, and many long-tail models are not listed in full. You can send us an RFQ (Request for Quote) directly, and we will provide wholesale pricing promptly.

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