3A99860G04
Description
Specifications
Manufacturer: Emerson (Westinghouse)
Model: 3A99860G04
Type: Isolated Analog Input Module (AI)
Architecture: Q‑Line, right‑side slot
Channels: 8 isolated differential analog inputs
Signal Ranges:
Voltage: 0–5 VDC, 1–5 VDC, ±2.5 VDC
Current: 4–20 mA, 0–20 mA
Resolution: 12‑bit (13‑bit for bipolar voltage)
Isolation: 1000 Vrms channel‑to‑ground
Input Impedance: Voltage >10 MΩ; Current ≈250 Ω
Conversion Time: <5 ms per channel
Accuracy: ±0.1% of full scale at 25 °C
Operating Temperature: 0 °C to 60 °C
Power Supply: 24 VDC ±10%, typical 8 W
Form Factor: Standard Q‑Line rack‑mount card
Indicators: LED for power, communication, and channel status
Compatibility: WDPF, legacy Ovation DCS
Weight: Approx. 1.1 kg
Key Features
8‑channel high precision: Delivers accurate process variable monitoring.
Right‑slot design: Matches Q‑Line rack layout for legacy system compatibility.
1000 Vrms isolation: Shields against industrial noise and ground loops.
Multi‑range flexibility: Configurable for voltage or current sensors.
Hot‑swap capable: Online replacement without system shutdown.
LED diagnostics: Quick visual check of power, comms, and channel health.
Legacy reliability: Engineered for long‑term operation in critical facilities.
Applications
Power generation: Temperature, pressure, flow, and level monitoring.
Petrochemical: Process parameter monitoring and control.
Water treatment: Pump speed, flow rate, and pressure monitoring.
Heavy industry: Vibration, temperature, and analog sensor monitoring.
Spare part replacement for existing WDPF/Ovation systems.
Related Part Numbers
3A99860G01: 8‑channel analog input (left slot)
3A99860G02: 8‑channel analog input (right slot)
3A99859G03/G04: 32‑channel digital input (left/right slot)
Notes
Legacy component: Supplied primarily as a spare for installed WDPF/Ovation systems.
For new projects, Emerson recommends modern Ovation AI modules for enhanced diagnostics and performance.
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