Overview
Functional Overview
The RIO bus provides a communication path between the interface and connected remote I/O equipment. In a dual-redundant arrangement, two communication paths can support continued data exchange if one path becomes unavailable, provided the system architecture and connected equipment support that configuration.
The supplied information lists 16 digital I/O points and 8 analog I/O points. These figures describe the stated I/O capacity, but the individual input/output channel allocation and electrical signal ranges require confirmation before wiring or replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AND50-562 |
| Brand | Yokogawa |
| Product Type | Interface Unit |
| Communication Protocol | RIO bus |
| RIO Bus Configuration | Dual-redundant |
| Power Supply | 24 VDC |
| Digital I/O Points | 16 |
| Analog I/O Points | 8 |
| Operating Temperature | -20 to +60 deg C |
| Mounting | 19-inch rack mountable |
| Length | 100 mm (3.94 in) |
| Width | 120 mm (4.72 in) |
| Height | 25 mm (0.98 in) |
| Weight | 0.3 kg (0.66 lb) |
RIO Bus Configuration
The AND50 product family includes node interface units for single or dual-redundant RIO bus configurations. Yokogawa documentation identifies AND50 as the dual-redundant RIO bus version. The redundant bus arrangement should therefore be distinguished from the individual I/O signal channels when checking replacement requirements.
Power Supply+1
Frequently Asked Questions
Q: Does the AND50-562 support dual-redundant RIO bus communication?
A: The Yokogawa AND50 node interface unit family is specified for dual-redundant RIO bus operation. Confirm the complete unit configuration before replacing an existing assembly.
Q: Is the AND50-562 a direct I/O signal processing module?
A: It is identified as a node interface unit. Its primary role is to provide the RIO bus interface for the remote I/O system rather than independently process field signals.
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