Description
Product Introduction & Engineering Value
High common-mode noise on long field wiring runs can easily corrupt standard single-ended analog readings. The ABB AI630 (3BHT300006R1) solves signal degradation in severe electrical environments by utilizing 16 differential analog input channels that reject unwanted stray voltages.
Designed for direct mounting into ABB S600 I/O subracks paired with Advant Controller 110 and 160 systems, this board converts noisy field transmitter signals into clean, millisecond-accurate data. It maintains measurement integrity across noisy motor control centers and high-power substation environments.
Technical Specifications
| Parameter | Specification |
| Module Type | High-Density S600 Differential Analog Input Card |
| ABB Ordering Number | 3BHT300006R1 / Y3BHT300006R1 |
| Channel Density | 16 Differential Analog Channels |
| A/D Resolution | 12-Bit Analog-to-Digital Conversion |
| Input Signal Types | -10 V DC to +10 V DC / 0 to 20 mA / 4 to 20 mA |
| Common Mode Rejection | High CMRR for noisy industrial ground loops |
| Backplane Compatibility | ABB AC110, AC160, and S600 I/O rack subassemblies |
| Auxiliary Supply | Standard 24 V DC backplane power feed |
| Operating Temperature | -25°C to +85°C (-13°F to +185°F) |
| Dimensions & Weight | 252 mm \times 273 mm \times 40 mm; approx. 1.30 kg (2.86 lbs) |
Field Application & The “Trench” Experience
The Trench Story: A heavy industrial rolling mill encountered intermittent speed reference jumps on an AC160-controlled drive section. Diagnostic traces showed ground potential offsets between the main drive cabinet and the remote I/O panel were corrupting standard analog inputs. Technicians replaced the single-ended card with an AI630 differential input module (3BHT300006R1). Because the AI630 measures the voltage difference across the signal pair rather than referencing local panel ground, the noise vanished immediately, restoring smooth motor speed regulation.
Target Industrial Applications:
- Aluminium Smelter Potlines: Measuring cell voltages amidst extreme magnetic fields and high DC common-mode voltages.
- Mining Conveyor Networks: Aggregating long-distance 4–20 mA sensor signals subject to localized ground potential differences.
- Power Plant Water Treatment: Tracking pH, conductivity, and flow signals across widely separated chemical dosing skids.
- AI630
- AI630
Transparency SOP: QA & Testing
- Microscopic Solder & Component Audit: Full visual check of multi-layer PCB traces, differential amplifier ICs, and passive filter arrays for micro-cracks or heat damage.
- Differential CMRR Sweep: Precision signal injection to measure Common Mode Rejection Ratio across all 16 differential channel pairs.
- Linearity & Accuracy Test: Voltage and current sweeps from 0 to 10 V and 0 to 20 mA to verify 12-bit conversion accuracy within OEM limits.
- Live Backplane Bus Simulation: Continuous polling inside an S600 / AC160 test chassis to confirm error-free data transfer under high bus traffic loads.
The Veteran’s Tech Trap Guide
- ⚠️ Single-Ended vs. Differential Signal Distinction: Unlike the AI620 (which supports single-ended signals), the AI630 requires proper differential wiring (+ and – signal leads for each channel). Connecting a single-ended loop without grounding the negative reference lead appropriately will cause channel saturation and out-of-range readings.
- PRO TIP: When upgrading or swapping S600 modules, double-check terminal block assignments. The differential pinout on the terminal unit differs from single-ended cards, so verify your loop drawings before powering up field transmitters.
- ⚠️ Observe Signal Loop Shunt Resistors: For 4–20 mA or 0–20 mA current loops, confirm that the required input shunt resistors are properly engaged on the terminal base or jumper layout prior to applying power.
Dynamic FAQ
Q: What is the main difference between the ABB AI620 and modules?
A: While both are 16-channel, 12-bit analog input cards for the S600 I/O system, the AI620 uses single-ended inputs, whereas the features differential inputs designed to reject high common-mode noise and ground loop voltages.
Q: Is 3BHT300006R1 the direct ordering part number for ?
A: Yes, “” represents the functional model designator, and “3BHT300006R1” (or Y3BHT300006R1) is the exact ABB hardware part number.
Q: Do I need to reconfigure system software when replacing an existing board?
A: No. As long as the replacement unit matches the part number and channel hardware settings of the original module, the Advant Controller CPU will recognize it automatically upon powering up the rack.
Q: How are surplus or reconditioned cards tested and warranted?
A: Every unit undergoes 100% channel differential calibration and backplane functional testing, is shipped in anti-static ESD packaging, and carries a full 1-year replacement warranty.
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