✓ Standard: 2-3 days
✓ Urgent: 24-48 hours*
✓ Service Exchange: 48-hour replacement*
✓ Spare Unit: Same unit as the original*
* Services subject to availability
The Varispeed G7 is Yaskawa’s advanced vector general purpose inverter, CIMR-G7C in Europe and CIMR-G7U in the United States. The European range is 41 models, 0.4 to 110 kW on 200 V and 0.4 to 300 kW on 400 V. Four control methods are selected by constant: flux vector, open loop vector 1 or 2, V/f without PG and V/f with PG.
The G7’s distinction is the 400 V output stage, which Yaskawa published as the world’s first 480 V three-level general purpose inverter. Its neutral-point clamped topology uses four series IGBTs per phase, so each device sees half the voltage of a two-level bridge, reducing surge voltage at the motor terminals, shaft voltage and bearing current on long cables.
That topology also decides a repair: four IGBTs per phase leg instead of two changes what a power stage rebuild involves. The enclosure is carried in the SPEC number rather than the model number, so capture the whole plate.
Neutral-point clamped three-level output stage in the 400 V class
Flux vector, open loop vector 1 or 2 and V/f control, selected by constant
150% torque at 0.3 Hz in open loop vector 2, and 150% at zero speed in flux vector
Speed control range of 1:1000 in flux vector control
150% overload for one minute and 200% for five seconds
MEMOBUS on RS-485/422 built in, with DeviceNet, ProfiBus-DP and CC-Link option cards
| Manufacturer | Yaskawa |
|---|---|
| Series | Varispeed G7 |
| Voltage classes | 200 V class (0.4 to 110 kW) and 400 V class (0.4 to 300 kW), 41 models |
| Power range | 0.4 to 300 kW maximum motor capacity |
| Control method | Sine wave PWM; flux vector control, open-loop vector control 1 or 2, V/f control without PG, V/f control with PG (switched by constant setting) |
| Torque characteristics | 150% / 0.3 Hz (open-loop vector control 2), 150% / 0 min-1 (flux vector control) |
| Speed control range | 1:200 (open-loop vector control 2), 1:1000 (flux vector control) |
| Speed control accuracy | ±0.2% (open-loop vector control, 25 °C ±10 °C), ±0.02% (flux vector control, 25 °C ±10 °C) |
| Speed control response | 10 Hz (open-loop vector control 2), 30 Hz (flux vector control) |
| Torque accuracy | ±5% |
| Frequency control range | 0.01 to 400 Hz |
| Overload capacity | 150% of rated output current for one minute, 200% for 5 s |
| Frequency setting signal | -10 to 10 V, 0 to 10 V, 4 to 20 mA, pulse train |
| Acceleration / deceleration time | 0.01 to 6000.0 s |
| Braking torque | Approximately 20% (approximately 125% with braking resistor option; braking transistor built into 200 V and 400 V class inverters of 15 kW or less) |
| Communications | MEMOBUS communications (RS-485/422, 19.2 kbps maximum) |
| Enclosures | Open chassis (IEC IP00), enclosed wall-mounted (IEC IP20, NEMA 1) |
| Product status | Discontinued in Europe, where Yaskawa files its documentation under discontinued products; still listed by Yaskawa America, which reissued the technical manual in 2024 |
| Voltage Class | Maximum Motor Capacity kW | Output Capacity kVA | Basic Model Number |
|---|---|---|---|
| 200 V class | 0.4 | 1.2 | CIMR-G7C20P4 |
| 200 V class | 0.75 | 2.3 | CIMR-G7C20P7 |
| 200 V class | 1.5 | 3.0 | CIMR-G7C21P5 |
| 200 V class | 2.2 | 4.6 | CIMR-G7C22P2 |
| 200 V class | 3.7 | 6.9 | CIMR-G7C23P7 |
| 200 V class | 5.5 | 10 | CIMR-G7C25P5 |
| 200 V class | 7.5 | 13 | CIMR-G7C27P5 |
| 200 V class | 11 | 19 | CIMR-G7C2011 |
| 200 V class | 15 | 25 | CIMR-G7C2015 |
| 200 V class | 18.5 | 30 | CIMR-G7C2018 |
| 200 V class | 22 | 37 | CIMR-G7C2022 |
| 200 V class | 30 | 50 | CIMR-G7C2030 |
| 200 V class | 37 | 61 | CIMR-G7C2037 |
| 200 V class | 45 | 70 | CIMR-G7C2045 |
| 200 V class | 55 | 85 | CIMR-G7C2055 |
| 200 V class | 75 | 110 | CIMR-G7C2075 |
| 200 V class | 90 | 140 | CIMR-G7C2090 |
| 200 V class | 110 | 160 | CIMR-G7C2110 |
| 400 V class | 0.4 | 1.4 | CIMR-G7C40P4 |
| 400 V class | 0.75 | 2.6 | CIMR-G7C40P7 |
| 400 V class | 1.5 | 3.7 | CIMR-G7C41P5 |
| 400 V class | 2.2 | 4.7 | CIMR-G7C42P2 |
| 400 V class | 3.7 | 6.9 | CIMR-G7C43P7 |
| 400 V class | 5.5 | 11 | CIMR-G7C45P5 |
| 400 V class | 7.5 | 16 | CIMR-G7C47P5 |
| 400 V class | 11 | 21 | CIMR-G7C4011 |
| 400 V class | 15 | 26 | CIMR-G7C4015 |
| 400 V class | 18.5 | 32 | CIMR-G7C4018 |
| 400 V class | 22 | 40 | CIMR-G7C4022 |
| 400 V class | 30 | 50 | CIMR-G7C4030 |
| 400 V class | 37 | 61 | CIMR-G7C4037 |
| 400 V class | 45 | 74 | CIMR-G7C4045 |
| 400 V class | 55 | 98 | CIMR-G7C4055 |
| 400 V class | 75 | 130 | CIMR-G7C4075 |
| 400 V class | 90 | 150 | CIMR-G7C4090 |
| 400 V class | 110 | 180 | CIMR-G7C4110 |
| 400 V class | 132 | 210 | CIMR-G7C4132 |
| 400 V class | 160 | 230 | CIMR-G7C4160 |
| 400 V class | 185 | 280 | CIMR-G7C4185 |
| 400 V class | 220 | 340 | CIMR-G7C4220 |
| 400 V class | 300 | 460 | CIMR-G7C4300 |
✓ 2-year warranty
✓ Fast service
✓ Experienced engineers
✓ Friendly customer service
✓ 24/7 technical support
✓ Courier return service
✓ Global coverage
✓ Reliability
✓ Flexibility
✓ No fix no fee
✓ Low prices
✓ High quality
