High-performance vector frequency inverters of the SPLC-NZ8400-200G/220P series are designed for controlling heavy-duty three-phase electric motors 380 V with power up to 200 kW, where overloads may occur, and higher control quality is required. These frequency inverters have a higher microprocessor performance than the SPLC-AT20 series, allowing SPLC-NZ8000 to execute operations faster and thus provide sensorless vector control of rotation speed with an accuracy of ±0.5%. If necessary, the inverter can switch to simple scalar control mode U/f with less accuracy and "Pump" mode for working with more powerful motors but with less load (details below).
The SPLC-NZ8000 inverter can also be optionally fitted with a PG board (purchased separately). With it, a sensor encoder can be connected to the inverter for tracking motor speed and rotor position. Vector control with feedback provides increased responsiveness and control precision of rotational frequency up to ±0.02%, enables torque control with precision up to ±5% and allows working not only with asynchronous but also synchronous motors.
Table — Main technical parameters of inverters SPLC-NZ8400-200G/220P
| Input Voltage |
3 phase 380 V
|
| Output Voltage |
3 phase 380 V
|
| Output Power |
up to 200 kW (220 kW in "Pump" mode)
|
| Output Frequency Range |
from 0.1 to 3200.0 Hz (V/f) |
| Nominal Input Current |
370 A (410 A in "Pump" mode)
|
| Nominal Output Current |
380 A (420 A in "Pump" mode)
|
| Protection Class EN 60529 |
IP20 |
When installing the frequency inverter in a protective cabinet, its control panel (operator panel) can be detached and installed on the front panel. A cable plug is required for this.
Technical characteristics of the SPLC-NZ8000 series
Standard features of the SPLC-NZ8000 frequency converter
| Control Modes |
Sensorless vector control (SFVC)
Vector control with closed loop (CLVC, with PG)
Voltage-Frequency (V/F) control |
| Maximum Output Frequency |
Vector control: 0-320 Hz
V/F control: 0-3200 Hz
|
| Carrier Frequency |
1-16 kHz
The carrier frequency automatically adjusts depending on the load characteristics. |
| Frequency Set Resolution |
Digital setup: 0.01 Hz
Analogue setup: maximum frequency × 0.025% |
| Startup 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 |
Autoboost
Manual boost 0.1%-30.0%
|
| V/F Curve |
Linear V/F curve
Multistage V/F curve
Staircase V/F curve (1.2, 1.4, 1.6, 1.8, quadratic) |
| V/F Split |
Two types: full split, partial split |
| Acceleration/Braking Mode |
Linear curve
S-shaped curve
Four groups of acceleration/deceleration time range 0.0-6500.0 s
|
| DC Braking |
DC braking frequency: from 0.00 Hz to maximum frequency
Braking time: 0.0-100.0 s
Choice of braking current action: 0.0% -100.0%
|
| JOG Control |
JOG frequency range: 0.00-50.00 Hz
JOG acceleration/braking time: 0.0-6500.0 s
|
| Built-in Multiple Set Speeds |
Realisation of up to 16 speeds through simple PLC function or combination of terminal states |
| Built-in PID |
Enabling PID control of the system in a closed loop |
| Automatic Voltage Regulation |
Maintains constant output voltage when main voltage changes. |
| Current and Voltage Overload Management |
Automated current and voltage limitation during operation to prevent frequent overcurrent or overvoltage trips. |
Enabling simple scalar control in SPLC-NZ8000 inverters allows selecting the "General" or "Pump" load type in the menu.
-
General — general industrial mode for motors operating with approximately the same torque at different speeds (compressors, conveyors, lifts). In this mode, the frequency inverter can provide a starting torque of over 150% for acceleration to overcome friction and inertia forces.
-
Pump — specialised mode for fans, pumps, and other electric motors operating with torque increasing with rotation speed and where there is no need for high starting torque.
Thus, the frequency inverter SPLC-NZ8400-200G/220P is designed to control motors up to 200 kW, but when switching to scalar control and "Pump" mode, it can control an electric motor up to 220 kW. This will reduce permissible overload: while in normal "General" mode a load of no more than 150% for 60 s or 180% for 3 s is allowed, in "Pump" mode with a more powerful motor these figures decrease — overload is no more than 120% for 60 s or 150% for 3 s.
Individual features of SPLC-NZ8000
| Support for Various PG Cards |
Support for PG cards for rotating transformer, differential input, differential input UVW, resolver and open collector input |
| Run Through Power Drop |
Voltage drop is compensated by load feedback energy, allowing the drive to continue operating for a short time. |
| Current Limit Control |
Prevents overcurrent fault of the drive's frequency. |
| High Performance |
Control of asynchronous and synchronous motors is implemented using high-performance current vector technology. |
| Time Control |
Time range: 0.0-6500.0 min |
| Communication Method |
Modbus (standard)
Profibus-DP (optional)
CANlink (optional)
CAN (optional) |
| Protection Modes |
Detection of motor short circuit on start-up, protection against input or output phase disruption, overcurrent, overvoltage, undervoltage, overheating, and overload. |
Wiring Diagram of Inverter SPLC-NZ8400-5R5G/7R5P
SPLC-NZ8000 has multifunctional control input-output terminals, whose function can be assigned independently in the settings — to set the frequency, give a command to move forward, stop, etc.:
- Inputs: 8 discrete inputs (including one high-speed pulse), 2 analogue inputs (one 0...10 V or 0...20 mA, second only for +10...-10 V;
- Outputs: 1 discrete transistor output (high-speed), 2 relays 250 VAC 3 A or 30 VDC 1 A, 2 analogue outputs (0...10 or 0...20 mA).
By default, the frequency inverter supports the most common communication port RS-485 used in Ukrainian enterprises, but on request, these frequency inverters can be equipped with a data transmission board for Profibus or CAN, allowing easy integration of equipment into any modern industrial network.
Model Selection of SPLC-NZ8000 Frequency Inverter Series
Parameters of SPLC-NZ8000 inverter series models 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
