Industrial Process Monitoring Solution – Advantech ADAM-4012 | ADAM-4000 Series
Where This Product Is Used
The Advantech ADAM-4012 is a field-proven RS-485 analog input module deployed across demanding industrial environments where reliable signal acquisition is non-negotiable. Typical application scenarios include:
- Furnace & Kiln Temperature Control – Direct thermocouple (J, K, T, E, R, S, B) input eliminates the need for external signal conditioners in high-temperature process lines.
- Chemical & Petrochemical Plant Monitoring – Isolated 4–20 mA current loop acquisition from pressure transmitters, flow meters, and level sensors over long RS-485 cable runs (up to 1200 m).
- HVAC & Building Automation – Voltage (±150 mV to ±10 V) and current inputs from zone sensors feed into SCADA or BMS systems via Modbus RTU protocol.
- Water & Wastewater Treatment – Continuous monitoring of pH, dissolved oxygen, and turbidity transmitters in remote pump stations with minimal wiring infrastructure.
- Food & Beverage Processing – Hygienic process temperature logging with thermocouple inputs compliant with traceability requirements.
- Machine Tool & CNC Integration – Analog feedback from servo drives and spindle load cells fed into PLC/SCADA via RS-485 network.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ADAM-4012 |
| Series | ADAM-4000 |
| Manufacturer | Advantech Co., Ltd. |
| Input Channels | 6 differential analog input channels |
| Input Types | mV, V, mA, Thermocouple (J, K, T, E, R, S, B) |
| Input Range | ±15 mV / ±50 mV / ±100 mV / ±500 mV / ±1 V / ±2.5 V / ±5 V / ±10 V / 4–20 mA / 0–20 mA |
| Resolution | 16-bit |
| Accuracy | ±0.1% FSR (typical) |
| Communication | RS-485, 2-wire, Modbus RTU / ADAM ASCII protocol |
| Baud Rate | 1200 / 2400 / 4800 / 9600 / 19200 / 38400 / 57600 / 115200 bps |
| Max. RS-485 Distance | 1200 m |
| Power Supply | +10 to +30 VDC (unregulated) |
| Power Consumption | 1.2 W (typical) |
| Isolation | 3000 VDC (field-to-logic) |
| Operating Temperature | -10°C to +70°C |
| Storage Temperature | -25°C to +85°C |
| Humidity | 5–95% RH (non-condensing) |
| Dimensions (W×H×D) | 72 × 123 × 35 mm |
| Weight | 630 g (with packaging) |
| Mounting | DIN-rail or panel mount |
| Country of Origin | Taiwan |
Why Engineers Specify This Model
- Universal Input Flexibility – A single module handles thermocouples, millivolt, voltage, and current signals, reducing SKU count and spares inventory.
- 16-Bit Resolution – Delivers ±0.1% FSR accuracy, meeting the precision demands of process control loops without external signal conditioning.
- 3000 VDC Galvanic Isolation – Protects PLCs and SCADA hosts from ground loops and transient surges common in industrial field wiring.
- Long-Distance RS-485 Networking – Up to 1200 m cable run and 256 nodes per segment minimizes infrastructure cost in distributed plant layouts.
- Dual Protocol Support – Native Modbus RTU ensures plug-and-play compatibility with Siemens, Allen-Bradley, Mitsubishi, and Omron PLCs; ADAM ASCII protocol supports legacy SCADA systems.
- Wide Power Input Range – 10–30 VDC accepts both regulated 24 VDC panel supplies and unregulated field power without additional regulators.
- DIN-Rail Mounting – Snaps onto standard EN 50022 35 mm DIN rail for rapid installation in control cabinets.
Complete System Bill of Materials
For a complete RS-485 analog data acquisition node, engineers typically pair the ADAM-4012 with:
- ADAM-4520 – RS-232 to RS-485/RS-422 converter (host PC interface)
- ADAM-4561 – USB to RS-485/RS-422 isolated converter
- ADAM-4000-CE – Snap-in DIN-rail mounting kit
- ADAM-4017+ – 8-channel analog input module (expansion)
- ADAM-4024 – 4-channel analog output module (closed-loop control)
- ADAM-4150 – 7-channel digital I/O module (alarm relay output)
- Shielded twisted-pair RS-485 cable (Belden 9841 or equivalent)
- 24 VDC DIN-rail power supply (Phoenix Contact QUINT or equivalent)
Compliance & Industry Standards
- CE Marking – EMC Directive 2014/30/EU
- FCC Part 15 Class A
- RoHS Compliant (Directive 2011/65/EU)
- Modbus RTU Protocol (Modbus.org specification)
- EN 50022 DIN-rail mounting standard
- IEC 61000-4 Series (ESD, EFT, Surge immunity)
Quality Assurance & Sourcing
Konmask.com sources the ADAM-4012 exclusively through authorized Advantech distribution channels and verified industrial component suppliers. Every unit undergoes incoming inspection including:
- Visual inspection for label authenticity and packaging integrity
- Functional power-on verification
- Communication protocol handshake test (Modbus RTU)
- Calibration certificate review where applicable
All products ship with original manufacturer packaging, documentation, and a minimum 12-month warranty against manufacturing defects.
How to Source This Part
- In-Stock Orders: Add to cart and check out directly — most orders ship within 1–3 business days from our warehouse.
- Bulk / Project Quotes: Contact support@konmask.com for volume pricing, lead-time confirmation, and project BOM support.
- Urgent Requirements: Call or WhatsApp +0086 19859288691 for same-day response on critical plant shutdowns or MRO emergencies.
- Customs & Export: We handle export documentation (commercial invoice, packing list, COO) for international shipments to Asia, Europe, and the Americas.
Application-Specific FAQ
Q: Can the ADAM-4012 read Type K thermocouples directly without a transmitter?
A: Yes. The ADAM-4012 has built-in cold-junction compensation and supports Type J, K, T, E, R, S, and B thermocouples natively. No external transmitter or signal conditioner is required.
Q: How many ADAM-4012 modules can I connect on one RS-485 bus?
A: Up to 256 nodes per RS-485 segment. Each module is assigned a unique address (00–FF) via DIP switch or software configuration.
Q: Is the ADAM-4012 compatible with Siemens S7-1200/S7-1500 PLCs?
A: Yes, via Modbus RTU over RS-485. Use the Siemens Modbus_Comm_Load and Modbus_Master function blocks. A CM 1241 RS-485 communication module is required on the S7-1200/1500.
Q: What is the maximum cable length for RS-485 communication?
A: 1200 meters using shielded twisted-pair cable (120 Ω termination resistor required at both ends of the bus).
Q: Can I use the ADAM-4012 with SCADA software like Ignition or WinCC?
A: Yes. Both Ignition (Inductive Automation) and Siemens WinCC support Modbus RTU drivers that communicate directly with the ADAM-4012 over RS-485.
Q: Does the module support hot-swap or does it require power cycling when replacing?
A: The ADAM-4012 does not support hot-swap. Power down the RS-485 segment before replacing a module to avoid bus contention and potential damage to field wiring.
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