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Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com
1
ALPHA6810S Series Energy Saver for Injection Molding Machine
Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com
2
Shenzhen Alpha Inverter Co., Ltd. www.szalpha.com
3
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
5
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
6
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