High-performance vector frequency converters of the SPLC-NZ8400-220G/250P series are designed to control high-load three-phase electric motors 380 V with a power of up to 220 kW, where overloads may occur, and high management quality requirements are set. These frequency converters have higher microprocessor performance than the SPLC-AT20 series, allowing the SPLC-NZ8000 to execute operations faster and ensure sensorless vector control with a speed accuracy of ±0.5%. If necessary, the inverter can switch to simple scalar control mode U/f with less precision and the "Pump" mode for working with more powerful motors at a lower load (details below).
The converter SPLC-NZ8000 can also be optionally equipped with a PG board (purchased separately). With it, a sensor-encoder can be connected to the inverter to track the motor's rotation speed and rotor position. Vector control with feedback provides enhanced responsiveness and speed control accuracy to ±0.02%, allowing control of the torque with accuracy up to ±5% and working not only with asynchronous but also synchronous motors.
Table — Main Technical Parameters of Frequency Inverters SPLC-NZ8400-220G/250P
| Input Voltage |
3ph 380 V
|
| Output Voltage |
3ph 380 V
|
| Output Power |
up to 220 kW (250 kW in "Pump" mode)
|
| Output Frequency Range |
from 0.1 to 3200.0 Hz (V/f) |
| Rated Input Current |
410 A (460 A in "Pump" mode)
|
| Rated Output Current |
420 A (470 A in "Pump" mode)
|
| Protection Degree EN 60529 |
IP20 |
When installing the frequency converter in a protective cabinet, its control panel (operator panel) can be detached and brought to the front panel. A connector cable is required for this.
Technical Specifications of SPLC-NZ8000 Series
Standard Functions of SPLC-NZ8000 Frequency Converter
| Control Modes |
Sensorless Vector Control (SFVC)
Vector Control in Closed Loop (CLVC, with PG)
Voltage-Frequency (V/F) Control |
| Max Output Frequency |
Vector Control: 0-320 Hz
V/F Control: 0-3200 Hz
|
| Carrier Frequency |
1-16 kHz
Carrier frequency automatically adjusts according to load nature. |
| Frequency Resolution |
Digital setting: 0.01 Hz
Analogue setting: max frequency × 0.025% |
| Starting Torque |
Type G: 0.5 Hz/150% (SFVC); 0 Hz/180% (CLVC, with PG)
Type: 0.5 Hz/100% |
| Speed Range |
1:100 (SFVC)
1:1000 (CLVC)
|
| Speed Accuracy |
±0.5% (SFVC), ±0.02% (CLVC, with PG)
|
| Torque Control Accuracy |
±5% (CLVC, with PG) |
| Overload Capability |
G type: 60 s at 150% of rated current, 3 s at 180% of rated current
P type: 60 s at 120% of rated current, 3 s at 150% of rated current |
| Torque Boost |
Auto boost
Manual boost 0.1%-30.0%
|
| V/F Curve |
Linear V/F curve
Multi-point V/F curve
Stepped V/F curve (1.2, 1.4, 1.6, 1.8, quadratic) |
| V/F Division |
Two types: full division, partial division |
| Acceleration/Deceleration Mode |
Linear curve
S-curve
Four groups of acceleration/deceleration time in range 0.0-6500.0 s
|
| DC Braking |
DC braking frequency: from 0.00 Hz to max frequency
Braking time: 0.0-100.0 s
DC braking action current selection: 0.0%-100.0%
|
| JOG Control |
JOG frequency range: 0.00-50.00 Hz
JOG acceleration/deceleration time: 0.0-6500.0 s
|
| Built-in Multiple Set Speeds |
Implement up to 16 speeds through simple PLC function or terminal state combinations |
| Built-in PID |
PIDs in closed-loop system can be enabled |
| Auto Voltage Tuning |
Can provide constant output voltage as the main voltage changes. |
| Over Current & Voltage Protection |
Auto limit current and voltage during work to prevent frequent trips due to overcurrent or overvoltage. |
Engaging simple scalar control in SPLC-NZ8000 converters makes it possible to select menu load type "General" or "Pump".
-
General — general industrial mode for motors operating with roughly equal torque at different speeds (compressors, conveyors, lifts). In this mode, the frequency converter can provide a starting torque of over 150% for acceleration to overcome frictional and inertial forces.
-
Pump — specialized mode for fans, pumps, and other electric motors working with torque that increases with rotational speed and where high starting torque is not required.
Thus, the frequency converter SPLC-NZ8400-220G/250P is intended for controlling motors up to 220 kW, but when switching to scalar control and "Pump" mode, it can control an electric motor up to 250 kW. This will reduce permissible overload: In the normal "General" mode, a load of no more than 150% for 60 s or 180% for 3 s is allowed, while in "Pump" mode with a more powerful motor, these figures decrease — overload of no more than 120% for 60 s or 150% for 3 s.
Individual Functions of SPLC-NZ8000
| Supports Various PG Boards |
Supports PG boards for rotating transformer, differential input, differential input UVW, resolver and open collector input |
| Power Drop Ride-Through |
Voltage drop is compensated by load feedback energy, allowing the drive to continue running for a short time. |
| Rated Current Limitation |
Allows avoidance of drive overcurrent frequency faults. |
| High Performance |
Control of both asynchronous and synchronous motors is achieved using high-performance current vector technology. |
| Time Management |
Time Range: 0.0-6500.0 min |
| Communication Method |
Modbus (standard)
Profibus-DP (optional)
CANlink (optional)
CAN (optional) |
| Protection Modes |
Motor short-circuit detection at start-up, input and output phase break protection, overcurrent, overvoltage, undervoltage, overheating, and overload protection. |
Schematic of Frequency Inverter SPLC-NZ8400-5R5G/7R5P
SPLC-NZ8000 has multifunctional input-output control terminals, which can be self-configured in settings — to set specified frequency, give forward run command, stop, etc.:
- Input: 8 discrete inputs (including one pulse high-speed), 2 analog inputs (one 0...10 V or 0...20 mA, second one only for +10...-10 V;
- Output: 1 discrete transistor output (high-speed), 2 relay outputs 250 VAC 3 A or 30 VDC 1 A, 2 analog outputs (0...10 or 0...20 mA).
By default, the frequency converter supports the most common communication port RS-485 in Ukrainian enterprises, but on request, these frequency inverters can be supplied with a Profibus or CAN data transmission board to integrate the equipment into any modern industrial network easily.
Selecting the Model of SPLC-NZ8000 Frequency Inverter
Parameters of SPLC-NZ8000 Series Converters for Three-Phase Motors 380 V
| Model |
Rated Output Power, kW |
Rated Input Current, A |
Rated Output Current, A |
| SPLC-NZ8400-0R4G4 |
0.4 |
3.4 |
1.2 |
| SPLC-NZ8400-0R7G4 |
0.75 |
3.8 |
2.5 |
| SPLC-NZ8400-1R5G4 |
1.5 |
5 |
3.7 |
| SPLC-NZ8400-2R2G4 |
2.2 |
5.8 |
5 |
| SPLC-NZ8400-3R7G/5R5P4 |
3.7/5.5 |
10/15 |
9/13 |
| SPLC-NZ8400-5R5G/7R5P4 |
5.5/7.5 |
15/20 |
13/17 |
| SPLC-NZ8400-7R5G/11P4 |
7.5/11 |
20/26 |
17/25 |
| SPLC-NZ8400-11G/15P4 |
11/15 |
26/35 |
25/32 |
| SPLC-NZ8400-15G/18.5P4 |
15/18.5 |
35/38 |
32/37 |
| SPLC-NZ8400-18.5G/22P4 |
18.5/22 |
38/46 |
37/45 |
| SPLC-NZ8400-22G/30P4 |
22/30 |
46/62 |
45/60 |
| SPLC-NZ8400-30G/37P4 |
30/37 |
62/76 |
60/75 |
| SPLC-NZ8400-37G/45P4 |
37/45 |
76/90 |
75/90 |
| SPLC-NZ8400-45G/55P4 |
45/55 |
90/105 |
90/110 |
| SPLC-NZ8400-55G4 |
55 |
105 |
110 |
| SPLC-NZ8400-75P4 |
75 |
140 |
150 |
| SPLC-NZ8400-75G/90P4 |
75/90 |
140/160 |
150/176 |
| SPLC-NZ8400-90G/110P4 |
90/110 |
160/210 |
176/210 |
| SPLC-NZ8400-110G/132P4 |
110/132 |
210/240 |
210/253 |
| SPLC-NZ8400-132G/160P4 |
132/160 |
240/290 |
253/300 |
| SPLC-NZ8400-160G/185P4 |
160/185 |
290/330 |
300/340 |
| SPLC-NZ8400-185G/200P4 |
185/200 |
330/370 |
340/380 |
| SPLC-NZ8400-200G/220P4 |
200/220 |
370/410 |
380/420 |
On order
