High-performance vector frequency inverters of the SPLC-NZ8400-132G/160P series are designed to control highly loaded three-phase electric motors 380 V with power up to 132 kW, where overloads may occur, and high demands are placed on control quality. These frequency inverters have a higher microprocessor performance than the SPLC-AT20 series, allowing SPLC-NZ8000 to perform operations faster and thereby ensure sensorless vector control of rotation speed with an accuracy of ±0.5%. If necessary, the inverter can be switched to simple scalar control mode U/f with less accuracy and to the "Pump" mode for operating with more powerful motors but with less load (details below).
In the SPLC-NZ8000 inverter, a PG card (purchased separately) can also be installed additionally. With it, the inverter can connect an encoder sensor to track motor rotation speed and rotor position. Vector control with feedback provides increased response speed and frequency control accuracy up to ±0.02%, allows torque control with an accuracy of ±5% and works not only with asynchronous but also synchronous motors.
Table — Main technical parameters of inverters SPLC-NZ8400-132G/160P
| Input Voltage |
3ph 380 V
|
| Output Voltage |
3ph 380 V
|
| Output Power |
up to 132 kW (160 kW in "Pump" mode)
|
| Output Frequency Range |
from 0.1 to 3200.0 Hz (V/f) |
| Nominal Input Current |
240 A (290 A in "Pump" mode)
|
| Nominal Output Current |
253 A (300 A in "Pump" mode)
|
| EN 60529 Protection Level |
IP20 |
When installing the frequency inverter in a protective enclosure, its control panel (operator panel) can be detached and placed on the front panel. For this, a connector cable needs to be purchased.
Technical Specifications of the SPLC-NZ8000 Series
Standard Functions of the SPLC-NZ8000 Frequency Inverter
| Control Modes |
Sensorless Vector Control (SFVC)
Closed Loop Vector Control (CLVC, with PG)
Volt-Frequency (V/F) Control |
| Maximum 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 characteristics. |
| Resolution for Frequency Setting |
Digital Setting: 0.01 Hz
Analogue Setting: max frequency × 0.025% |
| Starting Torque |
G Type: 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 Capacity |
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, parabolic) |
| V/F Division |
Two Types: Full Division, Partial Division |
| Acceleration/Deceleration Mode |
Linear Curve
S-curve
Four groups of acceleration/deceleration times in the 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
Selection of braking current action: 0.0% -100.0%
|
| JOG Control |
JOG Frequency Range: 0.00-50.00 Hz
JOG Acceleration/Deceleration Time: 0.0-6500.0 s
|
| Integrated Multi-step Speeds |
Implement up to 16 speeds through simple PLC function or combination of terminal states |
| Built-in PID |
Enables PID regulation of a closed-loop system |
| Auto Voltage Regulation |
Can ensure constant output voltage when main voltage changes. |
| Over Current and Voltage Control |
Automatic current and voltage limitation during operation to prevent frequent overcurrent or overvoltage trips. |
Enabling simple scalar control in SPLC-NZ8000 inverters makes it possible to choose the load type "General" or "Pump" in the menu.
-
General — general industrial mode for motors operating with approximately equal torque at different speeds (compressors, conveyors, elevators). In this mode, the frequency inverter can provide a starting torque above 150% for acceleration to overcome friction and inertia.
-
Pump — specialized mode for fans, pumps, and other electric motors operating with torque increasing with rotation speed and where high starting torque is not required.
Thus, the frequency inverter SPLC-NZ8400-132G/160P is intended for controlling motors up to 132 kW, but when switching to scalar control and "Pump" mode, it can control motors up to 160 kW. The allowable overload will decrease: if in the normal "General" mode, a load of no more than 150% for 60 s or 180% for 3 s, in the "Pump" mode with a more powerful motor, these indicators are reduced — overload no more than 120% for 60 s or 150% for 3 s.
Individual Functions of SPLC-NZ8000
| Support for Various PG Cards |
Support for PG cards for rotary transformer, differential input, differential UVW input, resolver and open collector input |
| Operation During Power Loss |
Drop in voltage is compensated by the feedback load energy, allowing the drive to continue operating for a short time. |
| Current Limit Restriction |
Prevents drive from tripping on overcurrent fault. |
| High Performance |
Control of both asynchronous and synchronous motors is achieved by 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 at start-up, protection against input or output phase failure, overcurrent, overvoltage, undervoltage, overheating, and overloading. |
Principle Circuit of Frequency Inverter SPLC-NZ8400-5R5G/7R5P
SPLC-NZ8000 has multifunctional input-output control terminals, whose function can be set independently in settings — determine desired frequency, forward command, stop, etc.:
- Inputs: 8 discrete inputs (one high-speed pulse), 2 analog inputs (one 0...10 V or 0...20 mA, the other for +10...-10 V only;
- Outputs: 1 discrete transistor output (high-speed), 2 relays 250 VAC 3 A or 30 VDC 1 A, 2 analog outputs (0...10 or 0...20 mA).
By default, the frequency inverter supports the most common communication port at enterprises in Ukraine RS-485, but upon request, these frequency inverters can be supplied with a data transmission card Profibus or CAN, allowing easy integration of equipment into any modern industrial network.
Choosing a Model of the SPLC-NZ8000 Series Inverter
Parameters of SPLC-NZ8000 Series Inverter Models for 380V Three-phase Motors
| Model |
Nominal Output Power, kW |
Nominal Input Current, A |
Nominal 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
