Description
Product Overview
The Cairox FIS-13 frequency inverter is a compact variable frequency drive designed to regulate the speed of compatible three-phase AC motors. By varying the output frequency, the drive allows motor speed to be adjusted to suit the application rather than relying solely on fixed-speed operation. This makes the series relevant to ventilation equipment, pumps, and other machinery where motor speed control is required. The documented FIS-13 configuration uses single-phase 230 VAC input and provides three-phase 230 VAC output.
The FIS-13 family includes variations that differ in power rating, enclosure protection, and EMC-filter configuration. The cited documentation describes an IP20 FIS version and an IP66 FIS-C version, with an integrated EMC filter identified for relevant configurations. Modbus RTU serial communication and a built-in control panel are also listed for the series. These features do not mean that every FIS-13 variant has identical terminals or options; the complete model code must be checked before installation.
For replacement procurement, verify the motor nameplate, rated current, supply phase, output voltage, required power, enclosure environment, and control method. A drive with the same series designation may still have the wrong power rating or protection class. Before commissioning, confirm motor parameters and control wiring, check acceleration and deceleration settings, and verify any external start/stop or speed-reference signals. Where Modbus RTU is used, confirm the communication settings and register mapping against the applicable documentation.
Product Introduction
The FIS-13 is intended for applications that need adjustable motor speed with a relatively compact drive. Depending on the selected configuration, control can be performed through the keypad or external terminals, while serial communication may be available for integration with a supervisory controller. The appropriate control arrangement depends on the complete drive model and the application wiring.
Installation requires attention to both electrical compatibility and the operating environment. Check the available mains supply, motor connection, rated motor current, protective grounding, EMC requirements, and enclosure rating. An IP20 drive should be installed inside a suitable enclosure; an IP66 version has different enclosure protection characteristics, but installation details still need to follow the manufacturer’s instructions. Do not assume that an IP66 variant is interchangeable with an IP20 unit without checking dimensions, wiring, and model-specific requirements.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Cairox |
| Model series | FIS-13 |
| Product type | Frequency inverter / VFD |
| Input supply | Single-phase 230 VAC for documented configuration |
| Motor output | Three-phase 230 VAC |
| Power range | 0.37–2.2 kW for the cited FIS(-C)-13-B series; verify exact variant |
| Input frequency | 48–62 Hz for the cited series |
| Output frequency | 0–500 Hz for the cited series |
| Communication | Modbus RTU listed |
| Operator interface | Built-in keypad / control panel |
| EMC filter | Integrated filter listed for relevant configurations |
| Protection rating | IP20 for FIS; IP66 for FIS-C in the cited documentation |
| Overload capability | 150% for 60 seconds and 175% for 2 seconds in the cited series documentation |
| Operating temperature | 0 to +50°C for the cited series |
| Exact rated current | Depends on the complete drive model |
| Exact dimensions | Depends on the complete drive model |
| Installation method | Follow the instructions for the exact variant |
FIS-13
Related Products
These are related drive options or configurations, not guaranteed direct replacements.
- Cairox series: Base frequency-inverter configuration; confirm the exact power and option code.
- Cairox FIS-C-13 series: Enclosed variant listed with IP66 protection. Verify its complete model code and electrical ratings.
- Cairox FIS-44: A separate frequency-inverter series referenced in ventilation equipment documentation; confirm supply and motor requirements before considering it.
- External motor control devices: If the application uses external start/stop contacts, a potentiometer, or a controller over Modbus RTU, confirm electrical interfaces and configuration before changing the drive.
Frequently Asked Questions
Q1: What is the Cairox ?
It is a frequency inverter series used to control the speed of compatible AC motors. The cited configuration supports single-phase 230 VAC input and three-phase 230 VAC output.
Q2: What motor power does the support?
The cited FIS(-C)-13-B documentation lists a range of 0.37–2.2 kW. Other listings show different ranges, so the full model code and drive nameplate must determine the applicable rating.
Q3: Does it support Modbus RTU?
Modbus RTU serial communication is listed for the documented series. Verify the exact variant, terminal assignment, and communication settings before integrating it with a PLC or supervisory controller.
Q4: Is the rated IP66?
Not every variant. The cited documentation identifies IP20 for FIS and for the FIS-C version. Confirm the complete model designation before relying on a protection rating.
Q5: Can it operate a motor rated for 400 VAC?
The cited configuration is specified for 230 VAC three-phase motor output. Do not connect a 400 VAC motor application without confirming that the exact drive variant and motor connection are suitable.
Q6: What should be checked before replacing an existing drive?
Verify the input supply, motor voltage and rated current, required power, protection class, control terminals, communication settings, and mounting requirements.
Q7: What information should be requested from the supplier?
Request the complete model code, a photograph of the nameplate, confirmation of the rated power and current, the enclosure rating, condition, warranty terms, and available functional-test records.
Procurement Recommendation
Do not order based only on . Obtain the full model designation—for example, the cited code format FIS-1320E-0.37-B—and confirm the motor power, rated current, supply requirements, protection rating, and control options.
Before commissioning a replacement, verify the motor connection and nameplate data, configure the drive for the application, and test the start/stop command, speed reference, and any Modbus RTU communication. The main procurement risk is selecting a drive from the correct series but with the wrong electrical rating or enclosure configuration.
