VFD options: what we add to a drive order
A VFD option is not a marketing add-on. It is a real need driven by a specific load profile. Our typical customer buys a drive and asks: do I need a braking resistor. Answer depends on the load.
If it is a hoist, centrifuge, drum, or anything with high inertia plus frequent stops: yes, the resistor is mandatory. Otherwise the DC bus trips on overvoltage. If it is a pump or fan with smooth ramp-up and coast-down: no resistor needed. Worth noting. On HVAC cabinets in shopping centers some integrators add a resistor «just in case» — that is wasted money.
We stock four main option groups. Braking resistors are sized by drive power and ED (the duty cycle in %). Braking modules: for drives above 22 kW where the resistor lives outside the unit. EMC filters: external; needed when sensitive instruments share the cabinet or you leave industrial zone for C1/C2 class. Operator panels: remote keypads plus service USB cables.
What we ask before quoting an option
First. Drive series and power rating. That defines the resistor (ohms, kW) and the module. Second: load behavior. Frequent start-stops. Inertia. Regenerative content. Third: cabinet location and how many sensitive neighbors (for EMC).
Fourth — do you need to mount the keypad away from the drive. Then we ship the service cable: on Schneider it is SR2USB01. Delta and Bosch use their own part numbers. Delta KPE-LE02 is a common pick for the VFD-EL/E series. Ask us to confirm compatibility for your exact drive. One catch. The stock resistor we ship with a VFD does not always survive heavy duty cycles. For a sawmill, press, hoist, crane we pick a higher-rated unit with ED 50% or above per a separate calculation. Official manufacturer warranty. Nova Poshta delivery across Ukraine. 1-2 days from our Kyiv warehouse.
| Model | Type | Brand |
|---|---|---|
| KPE-LE02 | Operator panel | Delta Electronics |
| SR2USB01 | USB cable | Schneider Electric |
| R912001618 | Braking resistor | Bosch Rexroth |
| R912001754 | Panel cable | Bosch Rexroth |
Manufacturers
Brand filters: Bosch Rexroth, Delta Electronics, Schneider Electric, Danfoss.
Options by technical parameter
Type filters: braking resistor, braking module, external EMC filter, operator panel.
FAQ
When do I need a braking resistor? For frequent deceleration and regenerative braking conditions. Learn more.
How do I confirm compatibility? Check drive series documentation and interface requirements.
What helps with commissioning? Operator panels and service cables for quick parameter setup.
Warranty and logistics
Selection support, official warranty, and shipping across Ukraine including Kyiv, Lviv, Dnipro, Kharkiv, and Odesa.
