What is C98043-A7044-L1-6 RSS70-DCF-40?

C98043-A7044-L1-6 RSS70-DCF-40 is a PC BOARD

What is Siemens C98043-A7044-L1-6 RSS70-DCF-40 PC BOARD used for?

It is used as a processing and control board for industrial automation systems, supporting stable data handling and system communication.

How do you properly use C98043-A7044-L1-6 RSS70-DCF-40 in daily operations?

Users do not need to operate it directly, it automatically monitors the main circuit's incoming AC voltage features in real time when the drive is powered on.

What is the core application of C98043-A7044-L1-6 RSS70-DCF-40 in the system?

Its core application is to achieve synchronous voltage detection of the three-phase main power supply and the control and protection of the DC motor field circuit.

What are the signal processing features of C98043-A7044-L1-6 RSS70-DCF-40?

It converts the captured high-voltage analog signals into galvanically isolated low-voltage signals for precise high-speed digital processing by the main control board.

C98043-A7044-L1-6 RSS70-DCF-40

Name: C98043-A7044-L1-6 RSS70-DCF-40
Brand: Siemens
SKU: RSS70-DCF-40

Voltage Detection PC Board

Product image is representative; revision or series may vary. Contact us to request a specific version.

Product Describe：

Voltage Detection and Field Supply Interface Board
Captures AC sync signals
distributes field power
and ensures high-low voltage isolation with phase rectification

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Technical specifications for C98043-A7044-L1-6 RSS70-DCF-40

Manufacturer:

Siemens
Product Category:

PLC Systems
Spare Part Number:

RSS70-DCF-40
Estimated shipping dimensions:

18.5x14.5x3.5cm
Weight:

0.22 kg
Tariff Code:

8537101190
Counliy of origin:

Germany
Application:

Variable-speed DC drives
Safety Features:

Designed with safety separation to handle
Rated Power Supply Voltage:

DC 24V
Power Consumption:

3–8W
Logic Circuit Operating Voltage:

3.3V/5V DC
Relative Humidity Range:

5–95% RH (non-condensing)
Measurement Accuracy:

±1% (of reading)

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Information

Overview Manuals Common Applications Product Precautions

The C98043-A7044-L1-6 RSS70-DCF-40 Voltage Detection PC Board operates as a precision voltage division hardware component within Siemens DC drive systems. This C98043-A7044-L1-6 RSS70-DCF-40 module is specifically config-built to execute voltage distribution and signal conditioning tasks, guaranteeing that accurate voltage reference signals are delivered directly to the control circuits within the drive architecture.

Converts high-voltage AC safely to low-voltage signals via high-impedance attenuation and isolation
Captures grid zero-crossing/phase data, establishing a rigid reference for thyristor firing
Links to CUD1 via ribbon cable for full data throughput, allowing quick swapping inside the housing

The Siemens C98043-A7044-L1-6 RSS70-DCF-40 occupies a critical position inside the power section enclosure of the SIMOREG DC-MASTER 6RA70 series DC drives, functioning as the primary hardware interface for line voltage registration and field current distribution. This circuit board is engineered with a high-resistance solid-state attenuation matrix that connects directly to the incoming three-phase AC main supply lines, safely transforming high-voltage potentials into isolated low-voltage waveforms.

Concurrently, the board acts as the central intake and routing hub for the motor’s field excitation circuit, incorporating dedicated heavy-duty copper busbar terminals and integrated fuse mounts that receive incoming industrial currents and distribute them directly to the stator field windings, ensuring continuous electrical management under heavy-current conditions.

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.

Siemens C98043-A7044-L1-6 RSS70-DCF-40 Voltage Detection PC Board Manuals, Datasheets, Drivers, Link

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.

Metallurgy & Steel Rolling Industry

Captures real-time three-phase AC incoming zero-crossing synchronization signals perfectly during steel ingot biting and heavy-load rolling, ensuring zero drift in thyristor heavy-current gating phases while distributing steady field excitation currents.

Pulp & Paper Industry

Works alongside the CUD1 main controller to achieve precise current conditioning across multi-shaft continuous sectional drives, delivering accurate voltage reference signals to prevent sudden web tension loss and subsequent tearing.

Oil & Gas Drilling and Exploration

Ensures line voltage detection for core mud pumps and heavy drawworks main rectifying bridges under extreme wild or offshore ambient temperatures, blocking grid-side transient line surges.

Railway Traction & Power Test Rigs

Supplies full-scope, high-precision voltage waveform telemetry to the main control board via the onboard multi-conductor ribbon cable during high-voltage motor type tests, facilitating constant power velocity trials.

Mining & Heavy Hoisting Industry

Operates inside dusty and high-vibration mine environments over long lifecycles, exploiting its robust isolation barrier to block commutation overvoltage surges from striking microelectronics, safeguarding the field excitation stability of hoisting motors.

When servicing this board, hot-plugging the flat ribbon cable connected to the main controller is strictly prohibited. All AC incoming power supplies to the drive must be completely isolated before handling to prevent high-voltage surges or transient commutation overvoltage from breaking down the weak-current circuits. During routine operation, periodically check the tightness of the onboard field fuses and never use non-specified fuse links as substitutes.

Technicians must also ensure the heavy-duty copper bolted terminals are torqued to specifications to avoid local overheating or burnout caused by poor contact. Furthermore, before performing insulation resistance tests on the drive, the high-voltage sampling leads connected to this board must be completely disconnected to prevent high-voltage electrical energy from totally destroying the onboard solid-state components.

Alternative Names

C98043-A7044-L1-6 RSS70-DCF-40 C98043-A7044-L1-6/RSS70-DCF-40 C98043-A7044-L1-6 RSS70-DCF-4O C98O43-A7O44-L1-6 RSS70-DCF-40 C98043-A7044-L1-6 RSS7O-DCF-4O C98O43-A7044-LI-6 RSS7O-DCF-4O C98043-A7044-LI-6 RSS70-DCF-40

Technical notes

The C98043-A7044-L1-6 RSS70-DCF-40 is a critical internal electrical acquisition and interface hardware component utilized within high-capacity Siemens SIMOREG DC-MASTER 6RA70 series DC drives. For physical identification, C98043-A7044-L1-6 denotes the internal Siemens printed circuit board (PCB) manufacturing and layout code, whereas RSS70-DCF-40 defines its specific hardware configuration profile within the drive’s internal power topology. Installed directly inside the drive's power section housing, this control board carries out the primary tasks of high-voltage incoming main line detection, synchronization signal extraction, and field supply power interface linking, serving as the hardware bond to ensure accurate current control and phase synchronization for the DC drive system.

FAQ View All FAQ

What is C98043-A7044-L1-6 RSS70-DCF-40?

C98043-A7044-L1-6 RSS70-DCF-40 is a PC BOARD
What is Siemens C98043-A7044-L1-6 RSS70-DCF-40 PC BOARD used for?

It is used as a processing and control board for industrial automation systems, supporting stable data handling and system communication.
How do you properly use C98043-A7044-L1-6 RSS70-DCF-40 in daily operations?

Users do not need to operate it directly, it automatically monitors the main circuit's incoming AC voltage features in real time when the drive is powered on.

What is the core application of C98043-A7044-L1-6 RSS70-DCF-40 in the system?

Its core application is to achieve synchronous voltage detection of the three-phase main power supply and the control and protection of the DC motor field circuit.
What are the signal processing features of C98043-A7044-L1-6 RSS70-DCF-40?

It converts the captured high-voltage analog signals into galvanically isolated low-voltage signals for precise high-speed digital processing by the main control board.

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