SAFT 125 CHC SAFT125CHC Chopper Control Board

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	SAFT 125 CHC SAFT125CHC
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Description

The ABB SAFT 125 CHC SAFT125CHC is a high-performance chopper control board designed for industrial applications, ensuring precise power management and efficient energy distribution. It is mainly responsible for controlling the pulse width modulation (PWM) signal of the braking chopper or a specific rectifier circuit in the system. It is the core logic component for managing energy discharge and maintaining the stability of DC bus voltage.

Applications

Power plants: Controlling energy feedback and stabilization in the excitation system (SFC/SEE) of large synchronous generators.

Steel mills: Using it to control the braking unit of large rolling mill drive systems, consuming the regenerative energy generated during deceleration.

Mining plants: Applying to the frequency converter control of large hoists or belt conveyors, ensuring busbar safety during descent operations.

Cement plants: Providing DC voltage monitoring and chopper control for the drive systems of high-power fans or rotary kilns.

Chemical plants: Ensuring power quality for high-power rectifier stations, preventing instantaneous overvoltage on the DC side.

Troubleshooting

DC Overvoltage Alarm: If the system reports "Overvoltage" under high load or braking, check if the board is issuing chopper pulses correctly, or if the chopper resistor is open.

Feedback Missing: If the onboard LED display signal is abnormal, check if the fiber optic cable is damaged or if the interfaces at both ends are dusty.

Logic Self-Test Failure: If the self-test fails upon power-up, check if the 24V power supply ripple is too high.

FAQ

Q: How is the current handling capability of this control board SAFT 125 CHC SAFT125CHC?
A: High performance. Rated current up to 125 A, specifically designed for energy discharge and chopper control in high-power converter systems.

Q: What are the environmental temperature requirements of SAFT 125 CHC SAFT125CHC?
A: Wide adaptability. Supports stable operation within -20°C to +55°C, suitable for most industrial plant environments.

Q: What precautions should be taken when replacing SAFT 125 CHC SAFT125CHC?
A: Power must be disconnected and residual voltage discharged. After replacement, a low-voltage simulation test should be performed since it directly controls high-voltage switching.

Q: Is SAFT 125 CHC SAFT125CHC interchangeable with a SAFT 125 PAC?
A: No. CHC is for chopper control, while PAC is for pulse amplification; their logic and application circuits are completely different.

Q: What does a constantly lit red indicator on SAFT 125 CHC SAFT125CHC represent?
A: It usually indicates an internal fault or abnormal feedback from the external actuator (IGBT). A host computer diagnosis is required to read the error details.