The ABB SAFT 125 CHC is a chopper control card (brake control PCB) used in ABB industrial drive systems. It is designed to manage braking energy in variable frequency drive (VFD) applications by controlling the chopper circuit that dissipates excess DC bus energy through a braking resistor.
This module is commonly found in ABB legacy drive platforms (including Stromberg / ABB Drives systems) and is critical for maintaining stable DC bus voltage during motor deceleration or load changes. It ensures safe energy dissipation, protects the drive system from overvoltage conditions, and improves overall drive performance in heavy-duty industrial environments.
Due to its role in braking control, SAFT 125 CHC is widely used in systems where high inertia loads or frequent stopping cycles are required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | SAFT 125 CHC |
| Product Type | Chopper Control / Brake Control Card |
| System Type | ABB Drives / Stromberg legacy drive systems |
| Function | DC bus braking control and energy dissipation |
| Application | Variable Frequency Drive (VFD) braking systems |
| Control Method | PWM chopper control logic |
| Mounting Type | Internal drive PCB module |
| Input Interface | Drive control backplane signals |
| Operating Environment | Industrial drive cabinet |
| Protection Role | Overvoltage protection via braking resistor control |
Physical Characteristics
| Item | Specification |
|---|---|
| Dimensions | Approx. 20.3 × 25.4 × 5.1 cm |
| Weight | Approx. 0.4 – 1.0 kg |
| Form Factor | PCB / electronic control board |
| Installation | Slot-in drive chassis module |
Recommended Related Models
- ABB SAFT 110 / SAFT 120 Series – Drive control and braking PCB variants
- ABB DCS500 / DCS600 Series – DC drive systems with chopper control
- ABB ACS600 / ACS800 Brake Options – Modern VFD braking modules
- ABB SDCS-CON Series – Drive control and regulation boards
- ABB Rectifier & Inverter Modules – Power stage drive components
Popular ABB Models
- ABB SAFT 125 CHC – Chopper control board for legacy ABB drives
- ABB ACS880 – Modern industrial drive platform
- ABB ACS800 – Widely used heavy-duty drive system
- ABB DCS550 – DC drive control system
- ABB DCS800 – Advanced DC motor drive platform
