Yokogawa AEP7D-20 Primary Power Supply Bus Unit

Nominal Voltage: 24 VDC.

Voltage Range: 16 - 30 VDC.

Current Input: 0.1–5 A AC (direct/clamp sensor compatible).

Accuracy: ±0.2% (voltage/current), ±0.5% (power).

Frequency Bandwidth: DC, 0.5 Hz–100 kHz.

Measurement Parameters: Voltage, current, power , harmonics (up to 50th), PF, frequency.

Sampling Rate: 1 MS/s (1 MHz max).

Display: 7-inch color LCD (touchscreen).

Storage: 16 GB internal memory (expandable via SD card).

Interfaces: USB, Ethernet, RS-232, Wi-Fi (optional).

Power Supply: 100–240 V AC, 50/60 Hz.

Operating Temp: -10°C to +50°C.

Multi-channel Outputs: 7 per input (expandable to 14 outputs when paralleling inputs) allow simultaneous powering of multiple devices.

Redundant Configuration Available: Dual power source (A/B power source) from that can work in parallel to provide continuous operation for stable operations such as a backup system and critical function system.

Signal Conditioning: Noise filtering and signal conditioning design for frontier control, strengthening the signal and reduce interference with advanced circuitry resulting in reliable and consistent data.

Alarm and Status Monitoring: Generate alarms when input signals break away from predetermined threshold levels, monitor the internal status to detect faults or irregular conditions.

Integration into digital communication: Allows integration into the industrial network for real time data communication with a control system.

Modular scalability: available in a range of I/O modules and terminal boards for flexible machine and auxiliary products in different industrial applications.

Process Automation in Chemical Plants: Monitors and controls critical variables like temperature, pressure, and flow in chemical processing units. Its redundant power configuration ensures uninterrupted operation, even during power source failures, enhancing process stability and safety.

Power Generation Systems: Deployed in gas/steam turbines, generators, and transformers to monitor electrical parameters (e.g., voltage, current, power factor). Supports real-time data transmission for optimized power distribution and grid reliability.

Industrial Manufacturing Lines：Powers and monitors multiple sensors and actuators in production lines, enabling quality control and machine health diagnostics. Its 7–14 output channels simplify multi-device connectivity.

Hazardous Environment Operations: Explosion-proof variants (suffix codes E/F) are used in oil refineries or gas facilities to safely distribute power in flammable atmospheres, complying with FMNI and Type n certifications.

Redundant Power Distribution in DCS: Integrates with distributed control systems (DCS) to provide dual power redundancy (A/B inputs), ensuring continuous operation in critical infrastructure like water treatment plants or semiconductor fabrication units.

Signal Conditioning for Sensors: Amplifies and filters analog signals from sensors (e.g., flow meters, pressure transmitters) to improve data accuracy in industrial networks, supporting precise control in automation workflows.