ACE919CA Schneider Sepam Series RS485 Communication Interface

Description

ACE919CA Schneider Sepam Series RS485 Communication Interface

Product Dimensions：

Product Description (Detailed Explanation)

The ACE919CA serves as an external interface module that converts the internal logic of a Sepam protection relay into a standardized RS485 serial communication signal. This allows for remote monitoring of electrical parameters, alarm status, and time-stamped event logs.

The module provides a 2-wire RS485 connection and is designed for “daisy-chain” networking. It ensures galvanic isolation between the communication network and the sensitive electronic circuits of the protective relay, protecting the system from common-mode voltages and electrical noise typical in medium-voltage substations.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Simplified Integration: Seamlessly connects Sepam relays to SCADA or Power Monitoring systems without complex protocol conversion.

• Electrical Protection: High-level galvanic isolation prevents electrical surges on the RS485 bus from damaging the protection relay.

• Robust Networking: Supports long-distance communication (up to 1.3km) and multiple nodes on a single segment, making it ideal for large industrial facilities.

• Ease of Installation: Compact DIN-rail mounting and simple screw-terminal wiring reduce setup time in the control cabinet.

• Reliability: Designed for high-electromagnetic interference (EMI) environments, such as those found near switchgear and transformers.

Precautions (Important Notes)

• Line Termination: To prevent signal reflection, a 120 $\Omega$ termination resistor must be installed at the last ACE919CA module in the RS485 chain.

• Shielding: Use shielded twisted pair (STP) cable. Ensure the shield is grounded at a single point (typically at the master controller) to avoid ground loops.

• Polarity: Pay close attention to the L+ and L- (or A and B) polarity of the RS485 wiring. Swapping these will result in communication failure.

• Connection Cable: Use only the dedicated CCA612 cable (provided or specified by Schneider) to connect the ACE919CA to the Sepam base unit.

Product Applications (Typical Use Cases)

• Electrical Substations: Remote monitoring of medium-voltage feeders, transformers, and busbars.

• Data Centers: Integrating power protection data into a Data Center Infrastructure Management (DCIM) system to monitor power quality.

• Industrial Plants: Centralizing alarms and trip data from motor protection relays to a central SCADA control room.

• Renewable Energy: Monitoring protection status in solar farms or wind turbine substations for grid compliance.

• Building Management Systems (BMS): Providing energy consumption and breaker status data to building automation platforms.

Shipping Port: Xiamen, China

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