Siemens 6SE7018-0ES87-2DA0
6SE7018-0ES87-2DA0 repair service is the most cost-effective path forward when this Siemens brake unit goes down — and Flexa Systems specializes in both Siemens 6SE7018-0ES87-2DA0 repair and sourcing 6SE7018-0ES87-2DA0 refurbished units to get your line back up fast. This brake chopper module operates on a 510–650 VDC bus, handles up to 9.7 amps continuous (4A braking threshold), and dissipates up to 5 kW of regenerative energy through an external braking resistor — making it essential in applications where rapid deceleration of high-inertia loads is required. If you've been searching for 6SE7018-0ES87-2DA0 repair near me, Flexa Systems ships from Lewisville TX and provides nationwide service, so geography is never a barrier. Engineers dealing with 6SE7018-0ES87-2DA0 troubleshooting will find this unit commonly deployed in overhead crane hoist drives, centrifuge deceleration systems, and high-cycle press applications where regenerative braking energy would otherwise trip a DC bus overvoltage fault. Because this part is discontinued by Siemens, sourcing a tested, repaired, or refurbished unit is often the only practical option outside of full drive replacement. Our industrial VFD repair process covers full component-level evaluation of the IGBT chopper circuit, gate driver boards, and onboard protection circuitry unique to this brake unit architecture. Every unit we return is load-tested under simulated braking conditions to verify proper switching behavior across the full DC input range before it ships back to you.
The 6SE7018-0ES87-2DA0 is compatible with the Siemens MASTERDRIVES MC and VC platform drives in the 6SE70 series, functioning as an external brake chopper module that connects directly to the DC bus terminals of the host inverter. Siemens 6SE7018-0ES87-2DA0 integration is standard with drive units such as the 6SE7021-0ES87-2DA0, 6SE7022-6ES87-2DA0, and 6SE7024-1ES87-2DA0, which share the same DC bus architecture and chassis mounting format within the MASTERDRIVES modular cabinet system. The 6SE7018-0ES87-2DA0 replacement for older brake chopper assemblies in the 6SE70 series requires matching DC bus voltage range (510–650 VDC) and verifying the external braking resistor rating to avoid thermal overload on the chopper IGBT. This unit interfaces with Siemens SIMOVERT MASTERDRIVES controlled via PROFIBUS-DP and is compatible with parameter sets managed through the OP1S operator panel or SIMATIC S7-300/S7-400 PLC families using the CBP2 communications board.
- DC bus overvoltage fault (F011) during braking cycles caused by a failed or degraded IGBT chopper transistor that can no longer clamp the bus voltage — one of the most frequently seen issues in 6SE7018-0ES87-2DA0 troubleshooting on high-cycle crane and hoist applications.
- Gate driver board failure resulting in the brake chopper not activating at all during deceleration, causing the host MASTERDRIVES unit to trip on an F009 overvoltage alarm even though the 6SE7018-0ES87-2DA0 fault indicator shows no local error — often caused by failed optocoupler isolation on the driver PCB.
- Thermal shutdown triggered by a blocked or failed internal temperature sensor, incorrectly flagged as an overtemperature condition (F002) even at low ambient temperatures — typically the result of a cracked NTC thermistor solder joint on the power board common in units with significant operating hours.
- Intermittent braking resistor overcurrent fault caused by carbonized or cracked snubber capacitors on the chopper output stage, leading to oscillatory current spikes that exceed the 9.7A trip threshold and cause nuisance faults during normal deceleration ramps.
Technical Specifications
| Manufacturer: | Siemens |
| Voltage: | 510-650 VDC |
| Current: | 9.7/4 AMP |
| Power: | 5KW |
| Type: | BRAKE UNIT |
