Description
The WEST PA1-W03 is a digital input option card designed for the West Plus Series of process controllers and indicators. It provides 4 digital input channels for monitoring external contact status, such as from pushbuttons, limit switches, or external control signals. This card is typically installed in the Option Slot A of compatible West controllers, enabling the addition of discrete input functionality to the base unit. It supports plug-and-play installation and is automatically recognized by the controller, allowing for easy system expansion without complex wiring changes.
Key Features
- Type: Digital Input Option Card
- Compatibility: West Plus Series (P-Series)
- Installation Slot: Option Slot A
- Channels: 4 digital input channels
- Configuration: Plug-and-play, auto-recognition by controller
- Isolation: Channel-to-channel and field-to-logic isolation
- Connection: Screw terminal or spring-clamp connection (varies by model)
- LED Indicators: Status indicators for each input channel
- Wiring: Supports 2-wire or 3-wire sensor connection (sourcing/sinking)
- Standards: CE, RoHS compliant
Technical Specifications
- Supply Voltage: 24V DC (via controller backplane or external supply)
- Input Type: Dry contact or 24V DC voltage level
- Input Current: Typically 4-8 mA per channel
- On-State Voltage: 15-30V DC
- Off-State Voltage: 0-5V DC
- Response Time: < 10 ms
- Isolation: 1500V AC (input to logic)
- Operating Temperature: 0°C to 60°C
- Storage Temperature: -20°C to 70°C
- Relative Humidity: 20% to 95% RH, non-condensing
- Protection Class: IP20 (when installed in controller)
- Dimensions: Approx. 22.5 x 100 x 110 mm (WxHxD)
- Weight: Approx. 100 g
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Technical support for configuration and installation
- Compatibility verification with West controllers
- Commissioning and diagnostics support available
Delivery Time
- Standard delivery: 3-5 working days
- Express shipping available upon request
Why Choose Our Store
- Genuine West components
- Global supply network with competitive pricing
- Expertise in industrial automation and process control
- Comprehensive technical documentation
- Responsive customer service and support
Applications
- External interlock monitoring in process control
- Remote start/stop command input
- Safety circuit monitoring (e.g., door switches)
- Material presence detection in conveyor systems
- General-purpose discrete input expansion for West controllers
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