Description
RELIANCE S-D4008 Product Description
Product Overview
RELIANCE S-D4008 is an Analog I/O Card (AIO-1) used in the Reliance Electric PSC-series industrial motion-control and automation platform. The PSC7000 documentation identifies S-D4008 as the AIO-1 analog I/O card, with component number 842710. It is designed to provide analog signal interfacing between field instrumentation and the controller, complementing the digital I/O, network and motion-control modules installed in the same system.
The RELIANCE S-D4008 provides the analog interface required for applications where voltage or current process signals must be acquired or generated by the control system. Within a PSC controller, the module can be used alongside the DSP processor, motion-control and communication cards to build a complete machine-control architecture. Available product listings also identify S-D4008-A and S-D4008-B as related variants, so the complete suffix should be checked when replacing an installed module.
For legacy automation equipment, S-D4008 RELIANCE ELECTRIC is valuable as a replacement analog interface card. Maintaining the original AIO hardware can avoid unnecessary PLC or motion-controller migration and allows existing machine programs, wiring and control strategies to remain in service.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | S-D4008 |
| Manufacturer | Reliance Electric |
| Product Family | PSC Series / PSC7000 |
| Product Type | Analog I/O Card |
| Functional Designation | AIO-1 |
| Component Number | 842710 |
| Main Function | Analog Signal Input/Output |
| System Architecture | PSC Industrial Motion Controller |
| Installation | PSC Controller Rack / Backplane |
| Interface Type | Analog field I/O |
| Application | Industrial Automation & Motion Control |
| Related Variants | S-D4008-A, S-D4008-B |
| Mounting | Rack-mounted module |
| Control Platform | Reliance PSC3000/4000/5000/7000 family |
| Part Number | S-D4008 |
The PSC7000 instruction manual lists AIO-1 (S-D4008) as the Analog I/O Card, component number 842710, alongside DIO-1 S-D4006, PNET-1 S-D4007 and other PSC option cards.
Note: Public sources do not provide a sufficiently reliable original datasheet for the exact channel count, individual voltage/current ranges and accuracy of the base S-D4008. Those values should therefore be verified from the installed card label or applicable Reliance hardware manual rather than inferred from later S-D4008 variants.
Main Features and Advantages
Analog Signal Interface
The primary function of RELIANCE S-D4008 is to provide analog interfacing for the PSC controller. It enables the control system to work with continuously varying field signals rather than only discrete ON/OFF states, making it suitable for measurement and control applications requiring proportional process information.
S-D4008
AIO-1 Architecture
Reliance identifies S-D4008 as the AIO-1 Analog I/O Card. The module forms part of a broader PSC architecture that includes digital I/O, network, synchronous and encoder-interface cards. This modular approach allows the controller to be configured according to the machine’s actual instrumentation and motion requirements.
Integration with Motion Control
In a PSC7000 installation, analog feedback and command signals can complement the high-speed motion-control functions provided by dedicated motion modules. This makes the S-D4008 useful where servo positioning must coexist with machine-level analog measurements or control references.
Modular Rack Installation
The card is installed within the PSC controller’s modular rack/backplane. Individual interface cards can therefore be serviced or replaced without necessarily replacing the complete control platform, which is advantageous for maintenance of long-running production machinery.
Flexible System Expansion
The PSC platform supports a range of optional cards, including digital I/O, analog I/O, network, synchronous and encoder modules. S-D4008 can therefore be incorporated into a larger automation architecture rather than operating as an isolated analog device.
Legacy Equipment Support
The RELIANCE S-D4008 is now primarily encountered in legacy Reliance Electric PSC installations. Current industrial-part listings identify the module as an analog I/O card and also reference S-D4008-A and S-D4008-B variants. Careful suffix matching is recommended because these variants should not automatically be assumed electrically interchangeable.
Application Fields
RELIANCE S-D4008 is intended for industrial automation systems where analog field signals must be integrated with Reliance PSC controllers. In manufacturing machinery, it can provide the interface for continuously variable measurements and command signals associated with production processes, machine positioning and auxiliary equipment.
In packaging and converting machinery, the analog I/O function can complement servo-control hardware by interfacing machine sensors, process feedback and analog reference signals. This is useful where mechanical movement must be coordinated with continuously varying process parameters.
In paper, textile and material-processing equipment, the module can be used within a PSC-based control cabinet to integrate analog measurements with motion and sequencing functions. The modular architecture allows analog, digital and motion interfaces to be combined according to the machine’s requirements.
The S-D4008 is also relevant to legacy industrial automation equipment using Reliance PSC3000, PSC4000, PSC5000 or PSC7000 controller architectures. Available product catalogs group the S-D4008 with these PSC servo-controller families.
For replacement applications, engineers should verify the exact S-D4008 / S-D4008-A / S-D4008-B designation, rack type, field wiring and configured analog ranges before installation. This is especially important when replacing a discontinued module in an existing machine.
Related Products
- S-D4008-A — Related rack-mount analog I/O variant; commonly listed as an S-D4008 spare/variant.
- S-D4008-B — Related analog I/O card variant used in Reliance PSC servo-controller systems.
- S-D4006 — DIO-1 digital I/O card providing discrete signal interfacing for PSC systems.
- S-D4007 — PNET-1 PSC network card used for controller/network communication.
- S-D4009 — SAEI-1 absolute encoder input card for position-feedback applications.
- S-D4011 — SYNC-1 synchronous card used for synchronization functions within PSC systems.
- S-D4024 — SAEI-2 absolute encoder input card, providing an updated encoder-interface option.
- S-D4030 — CCLK-1 CC-Link communication card for compatible automation networks.
- S-D4041 — DSPM-2A high-speed digital signal processor module used as the processing core of the PSC7000 architecture.
- S-D4043 — MCIM-2 motion-control interface module used with PSC7000 systems for multi-axis motion applications.
