Technical Overview
The Yokogawa ADV551 is a 32-channel isolated digital output module engineered for the CENTUM VP and CS 3000 DCS platforms. It delivers 24 V DC control signals to field actuators, solenoid valves, motor contactors, and annunciator panels. This module organizes its 32 outputs into two isolated groups of 16 channels each. Each output channel provides 0.5 A of continuous current, sufficient for directly driving most industrial loads without external relays.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ADV551 (suffix variants: -S00, -S10, -SE0) |
| Product Type | 32-Channel Isolated Digital Output Module |
| Rated Output Voltage | 24 V DC (sink type) |
| Maximum Load Current | 0.5 A per channel |
| Output ON Voltage Drop | ≤ 1.5 V DC at rated load |
| Leakage Current (OFF) | ≤ 0.1 mA |
| Surge Current Capability | 2.0 A for 10 ms |
| Response Time (ON/OFF) | ≤ 1 ms |
| Number of Outputs | 32 isolated channels |
| Isolation Withstand | 2 kV AC between outputs and system |
| External Power Supply | 24 V DC (external, not from system bus) |
| Maximum Current Consumption | 300 mA at 5 V DC (logic side) |
| Protection Features | Overcurrent and short-circuit protection per channel |
| External Connection | Pressure clamp terminal block |
| Unit Weight | Approximately 0.35 kg |
| Dimensions | 130 mm × 120 mm × 30 mm |
| Environmental Options | SE0 suffix adds ISA G3 conformal coating |
Performance and Application Benefits
The ADV551 updates all 32 output channels simultaneously with a fast 1 ms response time. This rapid switching capability suits applications requiring precise timing for valve sequencing and motor control. Each channel delivers 0.5 A of continuous load current and can handle 2.0 A surges for up to 10 milliseconds. The onboard overcurrent and short-circuit protection safeguards each output channel against field wiring faults. This self-protection prevents module damage and reduces unscheduled downtime. The pressure-clamp terminal block simplifies field wiring termination and supports solid or stranded conductors. Status LEDs provide clear visual indication of each output state for rapid troubleshooting. The hot-swap design permits online module replacement without interrupting system operations.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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