Product Details
The ABB DC551-CS31 1SAP220500R0001, also cataloged as the DC551-CS31 Communication Interface Modules, operates as a dedicated hardware component for CS31 bus slave integration and distributed I/O execution within ABB AC500 / S500 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DC551-CS31 |
| Part Number | 1SAP220500R0001 |
| Brand | ABB |
| Product Type | Communication Interface Modules |
| Origin | Germany |
| Weight | 0.12 kg |
| Dimensions | 67.5 x 76 x 62 mm |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | Supply Voltage 20.4 to 28.8 VDC |
| Dedicated Digital Inputs | 8 channels (24 VDC, 5 mA input current) |
| Configurable Digital I/O | 16 channels (24 VDC, transistor output 0.5 A max) |
| Input Delay Time | Configurable 0.1 to 32 ms |
| Local Rack Expansion | Extendable by up to 7 S500 I/O modules |
| Ingress Protection | IP20 |
Backplane Bus Communication Velocity and Firmware Flash Compatibility
The module functions as a CS31 fieldbus slave node, coordinating high-speed cyclic data transmission between the central controller and local expansion racks. Internal bus management logic preserves deterministic backplane bus communication velocity across up to 7 connected expansion modules. Onboard memory holds firmware flash compatibility parameters to maintain synchronized channel scanning, programmable input filtering (0.1 to 32 ms delay), and rapid diagnostic state reporting across high-density I/O configurations.
Frequently Asked Questions
Q: How many total local expansion modules can be connected to a single DC551-CS31 interface?
A: The DC551-CS31 supports local rack expansion of up to 7 additional S500 I/O modules via its right-side backplane bus interface.
Q: What is the maximum switching current capacity on the configurable digital output channels?
A: Each configurable transistor output channel supplies up to 0.5 A at 24 VDC (operational range 20.4 to 28.8 VDC).
Q: Does the module require an active system power restart when modifying input signal delay parameters?
A: Configurable input delay times (0.1 to 32 ms) are written directly via software configuration during node startup without requiring physical board modifications.
Field Installation Guidelines
- De-energize all 24 VDC primary power supplies before mounting or removing the DC551-CS31 module from its terminal base.
- Wear a grounded electrostatic discharge (ESD) wrist strap prior to handling the module assembly.
- Snap the module firmly onto its terminal base (such as TU551-CS31) until side locking tabs engage completely.
- Fasten all field power and signal wiring securely, ensuring field supply voltage remains strictly within 20.4 to 28.8 VDC.
- Route CS31 fieldbus communication cables separately from high-voltage AC conductors with a minimum physical clearance of 200 mm to suppress noise coupling.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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