High-performance vector frequency converters of the SPLC-NZ8400-55G series are designed to control high-load three-phase electric motors 380 V with a power of up to 55 kW, where overloads may occur and higher control quality is required. These frequency converters have a higher microprocessor performance than the SPLC-AT20 series, which enables the SPLC-NZ8000 to execute operations faster, thus providing sensorless vector control of rotation speed with an accuracy of ±0.5%. If necessary, the drive can switch to simple scalar control mode.
Additionally, the converter SPLC-NZ8000 can be equipped with a PG board (sold separately). With it, a sensor encoder can be connected to the drive for monitoring the motor's rotational speed and rotor position. Vector control with feedback provides enhanced speed and accuracy of frequency control to ±0.02%, allows torque control with an accuracy of ±5% and can work with both asynchronous and synchronous motors.
Table — Main technical parameters of frequency drives SPLC-NZ8400-55G
| Input Voltage |
3ph 380 V
|
| Output Voltage |
3ph 380 V
|
| Output Power |
up to 55 kW |
| Output Frequency Range |
from 0.1 to 3200.0 Hz (V/f) |
| Rated Input Current |
105 A
|
| Rated Output Current |
110 A
|
| Protection Degree EN 60529 |
IP20 |
When installing the frequency converter in a protective cabinet, its control panel (operator panel) can be detached and mounted on the front panel. For this, a connector cable is required.
Technical Characteristics of the SPLC-NZ8000 Series
Standard Functions of the SPLC-NZ8000 Frequency Converter
| Control Modes |
Sensorless Vector Control (SFVC)
Vector Control in Closed Loop (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
The carrier frequency is automatically adjusted depending on the load. |
| Frequency Setting Resolution |
Digital installation: 0.01 Hz
Analog installation: maximum 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 Capacity |
G Type: 60 s at 150% of rated current, 3 s at 180% of rated current |
| Torque Boost |
Automatic 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 Separation |
Two types: full separation, partial separation |
| Acceleration/Deceleration Mode |
Linear curve
S-shaped curve
Four groups of acceleration/deceleration time 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
Braking current action selection: 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 Speeds |
Implementation of up to 16 speeds through the simple PLC function or combination of terminal states |
| Built-in PID |
Enable PID regulation of the system in closed loop |
| Automatic Voltage Set |
Can maintain constant output voltage when the main voltage changes. |
| Overcurrent and Overvoltage Management |
Automatic current and voltage limiting during operation to prevent frequent overcurrent or overvoltage tripping. |
The SPLC-NZ8400-55G4 drives operate by default in the "General" load mode and do not switch to "Pump" mode.
-
General — a general industrial mode for motors that operate with approximately constant torque at different speeds (compressors, conveyors, hoists). In this mode, the frequency converter can provide a starting torque of over 150% for acceleration to overcome friction and inertia.
Individual Functions of SPLC-NZ8000
| Support for Various PG Boards |
Support for PG boards for rotating transformer, differential input, UVW differential input, resolver, and open collector input |
| Run via Power Drop |
Voltage drop is compensated by load feedback energy, allowing the drive to continue operating for a short time. |
| Rated Current Limitation |
Avoids drive frequency malfunction due to overcurrent. |
| High Performance |
Control of asynchronous and synchronous motors is realised through high-performance current vector technology. |
| Time Management |
Time range: 0.0-6500.0 minutes |
| Communication Method |
Modbus (standard)
Profibus-DP (optional)
CANlink (optional)
CAN (optional) |
| Protection Modes |
Detection of motor short circuit on startup, protection from input or output phase interruption, overcurrent, overvoltage, undervoltage, overheating and overload. |
Principal Diagram of Frequency Drive SPLC-NZ8400-5R5G/7R5P
SPLC-NZ8000 has multifunctional input-output control terminals, whose function can be set independently in the settings - to define the set frequency, to issue a forward run command, stop, etc.:
- Inputs: 8 discrete inputs (one of which is a high-speed pulse), 2 analog inputs (one 0...10 V or 0...20 mA, the 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 analog outputs (0...10 or 0...20 mA).
By default, the frequency converter supports the most common communication port in Ukrainian enterprises RS-485, but on request these frequency inverters can come with a data transmission board Profibus or CAN, allowing easy integration into any modern industrial network.
Selecting Model of SPLC-NZ8000 Series Drive
Parameters of SPLC-NZ8000 Series Converters for Three-phase 380V Motors
| 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
