Overview
The PSC7000 WR-D4008 is a digital I/O card for the Reliance Electric PSC 7000 control system. It interfaces the controller with external digital field devices, reading status signals from pushbuttons, limit switches, and safety interlocks, and sending control commands to solenoids, relays, and indicator lights. This card provides the essential connection between supervisory control logic and physical machinery on the factory floor.
Technical Data
| Parameter | Specification |
|---|---|
| Model Number | PSC7000 WR-D4008 |
| Product Type | Digital Input/Output Control Card |
Typical Applications
The WR-D4008 card was widely used in industrial control systems requiring reliable digital I/O, including:
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Material handling systems
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Batch mixing and process control
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Metal forming machinery
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Interface with variable speed drive indicators
It served as a robust connection between the main controller and field devices, supporting sequential logic and machine safety.
FAQ
Q1: What does the 'D4008' part of the model number signify?
A: 'D' indicates a Digital card, '40' refers to the series/revision, and '08' indicates 8 independent I/O channels.
Q2: Is this control card still actively supported or manufactured?
A: The PSC 7000 is a legacy system. The WR-D4008 is no longer manufactured but may be available via third-party repair services or surplus suppliers.
Q3: Does the WR-D4008 handle analog signals?
A: No, it only handles digital ON/OFF signals. Analog I/O requires a separate analog card.
Q4: How does this card ensure electrical safety?
A: It uses optical isolation (optocouplers) between field connections and internal electronics, protecting against voltage transients and electrical noise.
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| Warranty | 12 Months |
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