Product Overview
When a critical drive drops offline, every hour of downtime cuts into production. The 12F5C1B-350A from KEB answers that problem directly. This Combivert F5 Compact unit is a three-phase, 4 kW general-purpose drive built for practical industrial service. It accepts 400 VAC input at 50/60 Hz and delivers 0-400 VAC output with a 9.5 A rated output current. Maintenance teams value it because the layout is straightforward to inspect and the connections are easy to reach.
Key Parameters at a Glance
| Specification | Value |
|---|---|
| Manufacturer | KEB |
| Series | Combivert F5 Compact |
| Power | 4 kW / 5 HP |
| Input | 400 VAC, 3-phase, 13.3 A |
| Output | 0-400 VAC, 0-599 Hz, 9.5 A |
| Enclosure | IP20 |
| Control | Sensorless vector control |
| I/O | 2 analog in, 2 analog out, 8 digital in, 2 relay out |
| Comms | RS232/RS485 (Modbus RTU) |
| Ambient temperature | -10 to +45 °C |
Why the Combivert F5 Compact Fits Real Plants
The 12F5C1B-350A suits general-purpose duty across oil, gas and industrial automation. Sensorless vector control holds torque without an encoder, which reduces wiring and one more failure point. Eight digital inputs and two analog inputs handle interlocks, setpoints and run commands in one compact footprint. The RS232/RS485 port supports Modbus RTU, so the drive slots into existing control architectures.
Integration Note
Wiring into a Modbus RTU network may require an external gateway or connection module depending on your controller. Confirm cables and gateways with the supplier before commissioning.
Installation and Service Notes
Mount the drive vertically inside an enclosure that respects the IP20 rating. Keep clear space above and below for airflow, since the ambient limit is -10 to +45 °C. Separate power and signal wiring to reduce electrical noise on the analog channels. During commissioning, verify motor nameplate data against the 9.5 A output rating. For routine service, inspect cooling paths and terminal torque at scheduled shutdowns, and follow the manufacturer’s manual for all internal work.
Reliability and Uptime
A 4 kW drive on a pump, fan or conveyor rarely fails without warning. Heat and dust are the usual culprits. Because this unit is IP20, panel filtration and periodic cleaning of the heatsink area pay off. The built-in braking resistor supports stopping duty without extra hardware in many applications, which simplifies the panel and speeds replacement. When a spare is needed, fast dispatch, worldwide keeps the line moving.
Selection Checklist
Before ordering, confirm your motor’s full-load current stays within the 9.5 A output rating and that your supply matches 400 VAC three-phase. Check whether an EMC filter is required for your installation, as it is available upon request. Oil AutoTech offers hands-on technical selection help to match the drive to your application. Contact Oil AutoTech today for pricing and availability.
Frequently Asked Questions
What is the power rating of the 12F5C1B-350A?
It is rated 4 kW (5 HP) with a 9.5 A output current at 400 VAC three-phase input.
Does this drive support encoderless motor control?
Yes. The Combivert F5 Compact includes sensorless vector control, so no encoder is required for basic torque control.
What communication options does it offer?
It provides RS232/RS485 with Modbus RTU support, plus 2 analog inputs, 2 analog outputs, 8 digital inputs and 2 relay outputs.
What is the operating temperature range?
The drive operates from -10 to +45 °C and uses an IP20 enclosure, so it must be mounted in a protected panel.
Can Oil AutoTech help confirm compatibility?
Yes. Our team provides practical selection support and can confirm availability and lead time for your application.
