PLCs, Power Supplies & Others

Product Overview

The Yokogawa ASD533 drives digital output signals to field actuators and indicating devices. This module provides 16 discrete output channels with 24 VDC nominal operating voltage. It controls solenoid valves, contactors, and alarm annunciators in process applications. The unit integrates seamlessly into Yokogawa CENTUM and ProSafe-RS systems.

Technical Specifications

Physical Dimensions and Mounting

This module measures 130 mm in height, 30 mm in width, and 100 mm in depth. The unit weighs approximately 0.32 kg. It mounts directly onto a DIN rail within the system cabinet. The front panel includes 16 LED indicators for output status monitoring. These LEDs show active channels and fault conditions clearly.

Electrical Interface and Field Wiring

A 37-pin D-sub connector serves as the primary interface for field wiring connections. Each output channel uses a sourcing configuration for 24 VDC loads. The module includes built-in short-circuit protection on every channel. It also provides overcurrent protection that limits fault currents effectively. Field devices like solenoid valves, motor starters, and indicator lamps connect to these terminals. The module includes internal flyback diodes for inductive load suppression.

Performance and Output Characteristics

The ASD533 delivers 0.5 A per channel with an 8 A total current capacity. It switches outputs with minimal delay for responsive control actions. The module includes output state feedback for verifying commanded states. This feedback confirms that outputs match the control system’s requests. Furthermore, the module performs automatic diagnostics for open-load conditions. It reports any output faults to the main controller immediately.

Installation and System Integration

You can install this module in any available slot within the Yokogawa CENTUM chassis. The backplane automatically handles address assignment and power distribution. Always verify that the load current stays within the per-channel rating. For high-current loads, use external interposing relays for switching. Connect the field wiring according to the termination diagram. Test each output channel before connecting critical field devices.

Environmental Compliance and Certification

This module carries CE marking and UL recognition for industrial applications. It also complies with RoHS and WEEE environmental directives. The conformal coating protects the PCB against moisture and dust ingress. This coating extends operational life in demanding plant environments.

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