6RY1803-0CA04 C98043-A7115-L12 Siemens Frequency Converter Equipment SINAMICS DC MASTER Field Supply Board

6RY1803-0CA04 C98043-A7115-L12 Siemens Frequency Converter Equipment SINAMICS DC MASTER Field Supply Board

1.Overview of the 6RY1803-0CA04 C98043-A7115-L12 Siemens

The Siemens 6RY1803-0CA04 is a dedicated field supply board (Field Supply) for the Siemens SINAMICS DC MASTER (6RA80 series) DC speed controller. The motherboard model is C98043-A7115-L12. As a crucial component of the system, this board is responsible for providing stable, controllable DC power to the DC motor's field winding, ensuring the motor maintains excellent torque characteristics and speed stability under various operating conditions.

High-precision control: As the core of the DC speed control system, it likely utilizes advanced control technology, enabling high-precision DC speed regulation and meeting control requirements under complex operating conditions.

Stability and reliability: The product features a rational design and high-quality components, ensuring long-term stable operation in harsh industrial environments.

Comprehensive protection functions: This type of control board typically includes a variety of built-in protection functions, such as overcurrent, overvoltage, and undervoltage, ensuring rapid action in abnormal situations to protect equipment and personnel.

Easy to integrate and maintain: Siemens provides professional programming software and tools for its automation products to facilitate users' parameter setting, debugging and fault diagnosis.

2.Core Features:

Order Number: 6RY1803-0CA04
Board Model: C98043-A7115-L12
Product Description: FIELD SUPPLY – Field Power Supply Board (Spare Part)
Series: SINAMICS DC MASTER (6RA80)
Product Lifecycle: PM300: Active Product
Place of Origin: Romania
Net Weight: 0.153 kg
Product Code: 85049090
RoHS Compliance: RoHS compliant since August 21, 2013
Main Function: Provides controlled DC power to the DC motor field winding. Supports closed-loop control of the excitation current to prevent demagnetization and overexcitation. Seamlessly integrates with the 6RA80 power unit, allowing for hot-swap maintenance. Built-in overvoltage, undervoltage, and overcurrent monitoring enhances system safety.
Electrical Parameters: Rated excitation voltage: 3 AC 400 V (depending on system configuration)
Single-quadrant/two-quadrant operation, maximum excitation current: 30 A (specific value depends on the machine model)
Interfaces and Connections: Plug-in terminals for direct connection to the excitation winding
Onboard temperature sensing port supports excitation fan interlock
Protection Functions: Automatic protection against excitation circuit short circuit, overcurrent, overheating, and phase loss, with fault reporting
Extensible Compatibility: Compatible with power boards (15 A/30 A/60 A), communication boards, and advanced CUDs in the same series
Typical Applications: DC drive excitation systems for metallurgical rolling mills, papermaking machines, mine hoists, cable extrusion, rubber and plastics machinery, and other applications
Maintenance Tips: Replacement without busbar removal; Excitation circuit insulation > 5 MΩ before power-on; Perform excitation auto-tuning after replacement

These DC speed regulators and control components are ideal for many industrial applications, with common applications including:

Main drive systems in printing machinery

Production equipment in the rubber and plastics industries

Moving and lifting mechanisms in lifting machinery

Drives for rolling mills, coilers, and other applications in the paper and steel industries

3.Product details pictures

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