If you are working with a Variable Frequency Drive (VFD), you already know you’re holding a solid piece of industrial motor control equipment. But whether you are wiring it for the first time or troubleshooting a fault code, the manual is your best friend.
Never connect input power to the U/V/W output terminals. Double-check the wiring diagram on Page 2-5 (depending on the revision).
While we cannot host the file here, INVT distributes the manual freely. Search for: "INVT CHE100 Series Operation Manual" or check the official INVT website under the "Downloads" section. Look for the version that includes on the specification page. Invt Che100-1r5g-s2 Manual
| Fault Code | Meaning | Common Cause | Solution (per manual) | | :--- | :--- | :--- | :--- | | | Short-circuit | Blown IGBT module, motor short | Check motor winding resistance (U-V, V-W, W-U). Replace drive if fault persists. | | OC1 | Overcurrent during acceleration | Acceleration too fast (P00.08 too low) | Increase P00.08. Check for mechanical jams. | | OC2 | Overcurrent during deceleration | Deceleration too fast / braking resistor missing | Increase P00.09. Add optional braking resistor. | | OV1 | Overvoltage during deceleration | Regenerative energy from motor spinning down | Increase decel time (P00.09) or add braking resistor. | | LV | Undervoltage | Input power dip or drop | Check input voltage. The drive will auto-reset when power stabilizes. | | OH | Overheat | Fan obstructed, high ambient temp | Clean fan. Improve enclosure cooling. | | EF | External fault | External device tripped (e.g., thermal relay) | Check external hardware. Reset fault signal. |
| Terminal Mark | Function | Connection | | :--- | :--- | :--- | | | Single-phase input power | Connect L (live) to R, N (neutral) to S | | T | No connection for S2 model | Leave empty | | U, V, W | Output to motor | Connect to three-phase motor (U, V, W) | | PE | Protective Earth | Connect to system ground | | +, - | DC bus | For optional external brake resistor | | FWD, REV, COM | Digital inputs | Dry contact controls for start/stop/direction | | AI, GND | Analog input | For 0-10V or 4-20mA speed reference (e.g., from a potentiometer) | | 10V, GND | Potentiometer power | 10V DC reference for an external 10k ohm pot | If you are working with a Variable Frequency
Note: The manual covers the entire CHE100 series (0.4kW to 110kW), so always cross-check the "Rating Table" to confirm you are looking at the 1.5kW/220V single-phase specs.
Disclaimer: This article is for informational purposes. Always refer to the original INVT CHE100 series user manual for official instructions, wiring diagrams, and safety warnings. Double-check the wiring diagram on Page 2-5 (depending
A: The CHE100 is INVT’s economy, general-purpose series. CHV100 is a high-performance vector drive. GD100 is a mini, compact drive. The manual for each is different – do not use a CHV100 manual for a CHE100.
Before installing the INVT Che100-1R5G-S2 inverter, it is essential to ensure that you have a thorough understanding of its electrical connections and safety precautions. Here are some general guidelines for installing and wiring the inverter:
The official INVT manual is dense, but here are the sections you will reference most often: