Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com

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ALPHA6810S Series Energy Saver for Injection Molding Machine

Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com

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Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com

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Feature

ALPHA6810S Energy Saver works intelligently in the injection cycles. The motor speed is

controlled synchronously with the tracking of pressure and flow, which is equivalent to using a

variable pump instead of the actual fixed-displacement pump. And the original hydraulic system

works adaptively to the machine running power, eliminating the energy loss caused by

high-pressure overflow in previous system. Furthermore, the AC Drive makes the motor stop

running under non-action state (Mainly the cooling state) thus enlarges the energy saving space and

reduces the running noise as well as machine wear and temperature-rise. This series of inverter

perfectly combines the injection machine and the asynchronous servo controller’s advantages of

rapid dynamic response and strong instantaneous over-current ability. Because of this, the energy

saving of oil pump is 25%~70%, and hydraulic oil extends its lifetime to 3 years.

Technical Characteristics

� Wide input voltage fluctuation range is ±20%.

� Strong over-load capacity; protection to 250% instantaneous over-current

� Three analog inputs (0~1A, 0~10V); multiple selection modes

� Rapid dynamic response ensures the production efficiency.

� Built-in switching of bypass (Cabinet integration); more reliable running

� Bypass switching control mode doesn’t need the modification of injection related parameters

after switching.

� Soft start and tracking running reduce machine wear and extend lifetime of injection machine.

� Pass EMC testing; no interference to original injection control system

� Easy installation and debugging, free of alternation to original oil pump circuit

� Retain the original injection control mode and its oil circuit

� Optimal curve runs adaptively to the properties of injection oil circuit

� Keep original injection techniques and its work efficiency

� Runs synchronously with injection machine to extend machine lifetime without adjustment

� User-defined control curves satisfy all kinds of injection techniques.

� Direct proportional valve signal input; no transfer process

� Energy saving rate varies among 20%~70% in different injection techniques.

� Magnificent reduced heating; stable oil temperature; save higher than 30% cooling water

� Extend sealants lifetime; reduce stoppage for maintenance; save large amount of maintenance

Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com

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fee

Industry Application

The energy saver is used together with injection molding machines.

Specification

Technical Specifications of ALPHA6810S

Item Specification

Power Range 380V ±20% three phases : from 11 to 55kW

Rated Input Voltage and

Frequency Three phases: 50/60Hz

Allowable Input Voltage

Range

380V three phases : from 304 to 456V, Voltage unbalance rate of less

than 3%, Frequency fluctuation of below ±5%

Rated Output Voltage From 0 to rated input voltage

Max. Overload Current 150% for one minute, 180% for 20 seconds

Control Method V/F control, Open loop vector control

Frequency Range From 0.00 to 400.00Hz

Frequency Accuracy

Digital command ± 0.01 ％ (from -10℃ to +40℃ )

Simulation command ± 0.01 ％ (25℃ ± 10℃ )

Preset Frequency

Resolution

Digital command 0.01Hz

Simulation command 1/1000 of the maximum frequency

Output Frequency

Resolution 0.01Hz

Preset Frequency Signal From 0 to 10V, from 0 to 20mA

Acceleration-Deceleration

Time

From 0.1 to 3600 seconds (The acceleration and deceleration time are

set independently.)

Braking Torque The additional braking resistance can reach 125%.

Voltage-Frequency

Characteristic

4 fixed V/F characteristics are selectable, and any V/F characteristic can

be preset. The V/F control with PG is attainable.

Protective Functions

Over-voltage, under-voltage, current limit, over-current, overload,

electronic thermal relay, overheating, over-voltage stall, load short

circuit, grounding, under-voltage protection, input phase loss, output

phase loss, short circuit to ground, interphase short circuit, motor

overload protection, and more

Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com

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Ambient Temperature From -10℃ to +40℃

Humidity From 5 to 95% RH (No condensation)

Storage Temperature From -40℃ to +70℃

Service Place Indoor (without any corrosive gas)

Installation Site The altitude is at most 1,000m. There is not any dust, corrosive gas, or

direct solar radiation.

Vibration Less than 5.9m/s2

(0.6g)

Protection Rating IP20

Cooling Method Natural cooling or forced air cooling

Selection Guide

ALPHA6810S Selection Table

Voltage

Classes Model Motor Power (kW)

Rated Output Current

(A)

6810S-3011ZB 11 25

6810S-3015ZB 15 32

6810S-3018Z 18.5 37

6810S-3022Z 22 45

6810S-3030Z 30 60

6810S-3037Z 37 75

6810S-3045Z 45 90

380V Three

Phases

6810S-3055Z 55 110

Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com

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Overall Dimension of ALPHA6810S Series Energy Saver for Injection

Molding Machine

Model W mm H mm D mm

6810S-3011ZB 350 800 250

6810S-3015ZB

6810S-3018Z

6810S-3022Z

350 800 250

6810S-3030Z 395 860 260

6810S-3037Z 450 1100 325

6810S-3045Z

6810S-3055Z 450 1100 325