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  • ZD320 Frequency Inverter

ZD320 Frequency Inverter

This technically advanced inverter drive is a innovative and compact design. 

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ZD320 Frequency Inverter

This technically advanced inverter drive is a innovative and compact design. The performance and flexibility make the ZD320 an attractive solution for a broad range of AC Motor applications and with standard Modbus, GPRS remote module.

The ZD320 VFD is the most common and cost effective drive for a wide range of applications including packaging, material handling / conveying, positive displacement pumping, and HVAC systems.

Excellent performance with sophisticated hardware design

Software advanced

1. Higher performance FVC control mode

Ø Speed control accuracy ± 0.03%

Ø Speed control range: 1:1000

Ø Torque response: < 10ms

Ø Starting torque" 180% rated torque under 0Hz.

2. Compatible with Induction motor and PMSM (permanent magnet synchronous motor)

3. Torque control/Speed control free switch, kinds torque reference giving.

4. Special dead zone compensation to ensure stable torque output when low speed

5. Excellent oscillation suppression function.

Hardware design

1. Two CPUs design, one CPU for performance control, the other one for function control for better performance.

2. Adding two DC current hall for proving additional DC bus circuit protection

3. 3 way output halls for providing output phase short circuit, ground to phase short circuit

4. Infineon/Fuji IGBT to ensure good quality

5. 6 way digital input, 2 way analog input, Rs485 input, 2 way analog output ( one for high speed train pulse output)

2 relay output (1 is option), 1 collector output

Excellent Software Performance

1. High starting torque of 180% or greater achieved by sensorless vector control.

Integrated auto-tuning function for easy open loop vector control realizes high torque for applications requiring it is such as crane, lifts, elevators…etc.

ZD320 Frequency Inverter

2. Speed regulation at low-speed is greatly improved to enhanced process stability and precision.

ZD320 Frequency Inverter

3. Trip avoidance function

Minimum time deceleration, over-current suppress function and DC bus AVR are incorporated. The functions reduce nuisance trips,, Improved torque limiting/current limit function enable a load limit to protect machine and equipment.

ZD320 Frequency Inverter

4. Induction motor & Permanent magnetic synchronous motor control with one drive.

ZD320 Frequency InverterZD320 Frequency Inverter ZD320 Frequency Inverter
Innovation design with dual CPUs design, 2 additional DC halls, 3 ways output current halls, powerful protection for inverterInfineon/Fuji IGBT to ensure good quality, and long term service life.Multi-function controller board,Compatible with multi-encoder PG card
  ZD320 Frequency Inverter ZD320 Frequency Inverter ZD320 Frequency Inverter
Large capacitors board, installs in separately for good heatingIndependent air duct for low temperature rising

Control modeControl modeV/F controlSensorless Vector control 1Sensorless Vector control 2Close loop vector control
Starting torque1Hz 150%0.5Hz 150%0.25Hz 150%180% under 0Hz
Speed adjust range**1:501:2001:500
speed stabilizing±0.1%±0.3%±0.05%±0.02%
Torque precisionNONOYesYes
Motor typeGeneral induction motor,permanent magnet synchronous motor*
Function designHighest frequencyGeneral vector control :400Hz  V/f control:4000Hz
frequency resolutionDigital setting: 0.01Hz analog setting: maximum×0.025%
carrier frequency0.5K~16KHz, the carrier frequency can be adjust by temperature automatically
Frequency reference setting methodDigital of Control panel, analog AI1, AI2, potentionmeter of control panel, UP/DN control, communication, PLC pulse frequency
Accel./decel. characteristicLinear curve and S curve accel. /decel. mode, range of time: 0.0 to 65000S.
V/F curve3 mode: linear, multiple points, N Power
V/F separation2 times separation: totally separation, half separation
DC brakingDC braking frequency: 0.0 to 300Hz, DC braking current: 0.0% to 100%
Braking unitBuilt in braking unit up to 15kw, optional is 18.5kw to 75kw, external built in for above 93kw.
Jog functionJob frequency range: 0.0 to 50.0Hz, the accel. and decel. time of Jog
Configuration PIDEasy to perform pressure, flow, temperature close loop control
PLC  multiple speedTo achieve 16 segment speed running through built in PLC or terminal control
Common Dc bus *Multiple inverters use one DC bus for energy balance.
Auto voltage regulation (AVR)Enable to keep output voltage constant when grid fluctuation
Over load tolerance capabilityG type model: 150% rated current for 60s, 180% rated current for 2s,
P type Model: 120% rated current for 60s, 150% rated current for 3s.
stall control when over current, over voltageCarry out limiting automation for running current, voltage to prevent over current, over voltage frequently
Fast current limit functionminimize the IGBT module broken to protect the inverter, maximum reduce the over current fault.
Torque limit and torque control"Excavator" characteristics , torque limit automatically during motor running. Torque control is available in close loop vector control mode.
featuresfriendly interfaceDisplay Hello when power on.
Multiple function key MK.F buttonIt can set for Forward Jog, reverse Jog, forward/reverse switch
Timing control functionA total running time and total running time calculating


Motor over heat protectionAccepting motor temperature sensor signal input via AI1 terminals.
Command sourceControl panel, control terminals, series communication, switch freely.
Frequency sourceDigital setting, analog current/voltage, pulse setting, serial communication, main and auxiliary combination.
Protection functionShort circuit detect after power on, input/output phase missing, over voltage, over current, under voltage, over heat, over load protection.
EnvironmentApplication siteIndoor, free of exposure to sunlight, no dusty, no corrosive, no inflammable gas, no oil and water vapor, and water dipping
AltitudeLower 1000m
environment temperature-10℃~+40℃, power derated for 40~50℃, rated current derated 1% for 1℃increasing.
HumidityLess than 95%, no water condense.

SNModelsRate current3 phase output voltageApplicable for motorsExternal of drive size(mm)Weight

ZD320 Frequency Inverter

Rich Input and output interface.

● 6 ways digital input

● 2 ways analog input

● 1 ways RS485 built in

● 2 Analog output, l AO1 can compatible with 0-10V or 0-20mA. AO2 can compatible 0-10V or high speed train output.

● 2 programmable relay output, 1 programmable transistors output.

Textile: P-jump Winders, Extruders, Tufting Machines, spinning machine

Packaging: In-feed / Out-feed, Case Packing, Bottling & Canning, Carton Manufacturing. Beverage packing

Plastics & Rubber: Extruders, Blow Molding, Thermoforming, Injection Molding.

Pulp & Paper: Paper Machines, Debarkers, Winders, Saw Mills

Converting: Coaters ,Laminators ,Slitters ,Flying Cutters

Air Handling: Supply and Return Fans ,Cooling Towers ,Spray Booths ,Dryers

Oil & Gas: Top Drives ,Pumpjacks, Down-hole Pumping Centrifuges

Material Handling: Conveyors, Sortation, Palletizers, Coil Winding

Metals: Stamping / Punch Press, Wind /Unwind, Cut-to-length,cable drawing. Wire Draw

Construction Materials: Kilns, Planers, Flying Cutoff, Mixers

Laundry: Dryers, Extractors, Folders, Washers

Food & Beverage: Conveyors, Fillers, Mixers, Centrifuges

Automotive: Stamping, Test Stands, Indexing, Metal Cutting

Construction crane, hoist, lifting