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* Services subject to availability
Commander SK is Control Techniques’ general purpose induction motor drive, and it is really two drives under one name. Sizes A to D are wall or DIN rail units from 0.25 kW to 7.5 kW, including a 110 V single phase range that works through an input doubler. They carry one rating, 150 per cent overload for sixty seconds, and output frequency to 550 Hz.
Sizes 2 to 6 are a separate, larger platform, dual rated at 110 per cent Normal Duty and 150 per cent Heavy Duty for sixty seconds. Four supply classes are built, 200 to 240 V, 380 to 480 V, 500 to 575 V and 500 to 690 V, reaching 132 kW and 236 A on the largest 400 V unit.
Identification turns on the model code: a sizes A to D part number is ten characters encoding phases and kilowatts, as in SKA1200025; a sizes 2 to 6 part number is six characters encoding a rating step, as in SK6602.
Two frame families under one name: compact sizes A to D and larger sizes 2 to 6
0.25 kW to 132 kW Normal Duty (0.33 hp to 200 hp), with output current to 236 A
Dual Normal Duty and Heavy Duty ratings on sizes 2 to 6, set by the motor rated current
Sizes A to D carry a single rating with 150% overload for 60 seconds and output to 550 Hz
Single or three phase 200 V supply on the B, C and D compact models
Internal EMC filter fitted as standard on sizes A to D
Modbus RTU serial communications, with braking resistor data published per model
| Manufacturer | Control Techniques |
|---|---|
| Series | Commander SK |
| Motor Types | 3 phase induction motors |
| Power Range | 0.25 kW to 132 kW (0.33 hp to 200 hp) Normal Duty; 110 kW (150 hp) Heavy Duty |
| Output Frequency (Sizes A To D) | 0 to 550 Hz |
| Output Voltage (Sizes A To D) | 3 phase, 0 to drive rating (240 or 480 Vac maximum, set by Pr 08). The output voltage can be increased by 20% during deceleration |
| Supply, 200 V Units Sizes A To D | 1 phase 200 to 240 Vac ± 10%, 48 to 62 Hz (SKA models); 1/3 phase 200 to 240 Vac ± 10%, 48 to 62 Hz (SKBD/SKCD models) |
| Supply, 400 V Units Sizes A To D | 3 phase 380 to 480 Vac ± 10%, 48 to 62 Hz |
| Supply, Sizes 2 To 6, 200 V Drive | 3 phase, 200 to 240 Vac ± 10%, 48 to 65 Hz |
| Supply, Sizes 2 To 6, 400 V Drive | 3 phase, 380 to 480 Vac ± 10%, 48 to 65 Hz |
| Supply, Sizes 3 To 6, 575 V Drive | 3 phase, 500 to 575 Vac ± 10%, 48 to 65 Hz |
| Supply, Sizes 4 To 6, 690 V Drive | 3 phase, 500 to 690 Vac ± 10%, 48 to 65 Hz |
| Dual Rating | Commander SK sizes 2 to 6 are dual rated; the setting of the motor rated current determines whether the Heavy Duty or Normal Duty rating applies. Both ratings are compatible with motors designed to IEC 60034. Sizes A to D carry a single rating instead, with 150% overload for 60 seconds |
| Power Rating Reference Voltages | Nominal motor power kW ratings are stated at 220 V, 400 V, 575 V and 690 V; nominal motor power hp ratings are stated at 230 V, 460 V, 575 V and 690 V |
| Nominal Motor Power (Models Listed Below) | 0.25 to 4.0 kW (0.33 to 5.0 hp) |
| Output Current (Models Listed Below) | 1.3 to 9.6 A at 100% RMS, the single rating that applies to sizes A to D. Across the whole family the maximum is 236 A Normal Duty, on SK6402 |
| Input Current Note | The maximum continuous input currents are used to calculate input cable and fuse sizing. Where no maximum continuous input currents are indicated, use the typical full load input current values. See the Commander SK Technical Data Guide for cable and fuse data |
| Product Status | Superseded. Nidec lists Commander SK on its Superseded AC Drives index, and Inverter Drive Repair still services these units |
| Model Number | Nominal motor power kW | Nominal motor power hp | Supply voltage and frequency | Typical full load input current 1ph A | Typical full load input current 3ph A | Maximum continuous input current 3ph A | 100% RMS output current A | 150% overload current for 60s A | Minimum braking resistor value Ohm |
|---|---|---|---|---|---|---|---|---|---|
| SKA1200025 | 0.25 | 0.33 | 1 phase 200 to 240Vac ±10% 48 to 62Hz | 4.3 | 1.7 | 2.55 | 68 | ||
| SKA1200037 | 0.37 | 0.5 | 1 phase 200 to 240Vac ±10% 48 to 62Hz | 5.8 | 2.2 | 3.3 | 68 | ||
| SKA1200055 | 0.55 | 0.75 | 1 phase 200 to 240Vac ±10% 48 to 62Hz | 8.1 | 3.0 | 4.5 | 68 | ||
| SKA1200075 | 0.75 | 1.0 | 1 phase 200 to 240Vac ±10% 48 to 62Hz | 10.5 | 4.0 | 6.0 | 68 | ||
| SKBD200110 | 1.1 | 1.5 | 1/3 phase 200 to 240Vac ±10% 48 to 62Hz | 14.2 | 6.7 | 9.2 | 5.2 | 7.8 | 28 |
| SKBD200150 | 1.5 | 2.0 | 1/3 phase 200 to 240Vac ±10% 48 to 62Hz | 17.4 | 8.7 | 12.6 | 7.0 | 10.5 | 28 |
| SKCD200220 | 2.2 | 3.0 | 1/3 phase 200 to 240Vac ±10% 48 to 62Hz | 23.2 | 11.9 | 17.0 | 9.6 | 14.4 | 28 |
| SKB3400037 | 0.37 | 0.5 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 1.7 | 2.5 | 1.3 | 1.95 | 100 | |
| SKB3400055 | 0.55 | 0.75 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 2.5 | 3.1 | 1.7 | 2.55 | 100 | |
| SKB3400075 | 0.75 | 1.0 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 3.1 | 3.75 | 2.1 | 3.15 | 100 | |
| SKB3400110 | 1.1 | 1.5 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 4.0 | 4.6 | 2.8 | 4.2 | 100 | |
| SKC3400150 | 1.5 | 2.0 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 5.2 | 5.9 | 3.8 | 5.7 | 100 | |
| SKC3400220 | 2.2 | 3.0 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 7.3 | 9.6 | 5.1 | 7.65 | 100 | |
| SKC3400300 | 3.0 | 3.0 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 9.5 | 11.2 | 7.2 | 10.8 | 55 | |
| SKC3400400 | 4.0 | 5.0 | 3 phase 380 to 480Vac ±10% 48 to 62Hz | 11.9 | 13.4 | 9.0 | 13.5 | 55 |
The table covers the Commander SK size A, B and C models. Sizes A to D carry one rating, with 150% overload for 60 seconds, so these columns are not Heavy Duty figures. The size D models (SKDD200300, SKD3200400, SKD3400550 and SKD3400750, up to 7.5 kW) and the sizes 2 to 6 range (SK2201 to SK6602 in 200 V, 400 V, 575 V and 690 V) are published with a different set of columns and are not listed here, so please contact Inverter Drive Repair for ratings on those frame sizes.
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