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บริษัท สหไทย อินดัสเทรียล จำกัด
คุณอำพร 08-4427-3353 E-mail:



MICROMASTER 440 The powerful all-rounder
Even in the world of drives, there are often forces which are difficult to control. Until the most powerful of our frequency inverters enters the field. The MICRO- MASTER 440 has been specially designed for those applications which require broader functionality and a greater dynamic response than is usually the case. The sophisticated vector control system ensures a uniformly high drive quality, even when sudden load changes occur.
Fast response inputs and positioning deceleration ramps allow movement to target posi- tions even without an encoder. Due to an integrated brake chopper, it works with outstanding precision, even during braking and short declaration ramps. All this is possible within a power range starting at 0.12 kW (0.16 HP) and going up to 250 kW (350 HP).
Typical uses
Numerous applications in areas such as material handling systems, the textile industry, elevators, hois- ting gear, mechanical engineering and the food, bev- erages and tobacco industries.
MICROMASTER 440 - Technical data
Voltage and
power ranges
200–240 V, ± 10%, 1 AC, 0.12 to 3 kW (0.16 to 4 HP)
200–240 V, ± 10%, 0.12 to 45 kW (0.16 to 60 HP)
380–480 V, ± 10%, 0.37 to 250 kW (0.5 to 350 HP)
500–600 V, ± 10%, 0.75 to 90 kW (1.0 to 125 HP)
Operating temperature 0.12 to 75 kW (0.16 to 1.0 HP) (CT): –10 °C to +50 °C
90 to 200 kW (125 to 276 HP) (CT): 0 °C to +40 °C
Process control Internal PID controller (autotuning)
Types of control Vector control, FCC (Flux Current Control), multipoint charac- teristic (parameterizable V/f characteristic), V/f characteristic
Inputs 6 digital inputs, 2 analog inputs, 1 PTC/KTY input
Outputs 2 analog outputs, 3 relay outputs
to automation
The ideal partner for your automation needs, from connec- tion to SIMATIC S7-200 to integration in TIA with SIMATIC and SIMOTION.
Its strengths in brief
Compact housing
Easy to install
Sophisticated vector control (speed/ torque)
Versatile inputs and outputs
Guided commissioning
High overload capacity
Evaluation of motor pulse encoders (optional) for maximum control of torque at the lowest speeds (even at zero speed)
Modular system of extension options
Can be dimensioned for CT (con- stant torque) or VT (quadratic, i. e. variable torque)
3 selectable drive data to adapt the inverter to different operating circumstances
Load torque monitoring
Kinetic buffering against voltage dips
Compound braking for controlled rapid braking
Integrated brake chopper for power outputs up to 90 kW (125 HP)
Free function blocks
4 skip frequencies minimize machine stress when resonance occurs
Automatic restart
Minimal stress on motor when inverter connected to rotating motor
Evaluation of motor temperature for integrated motor protection
Prepared for use in IT networks
Available with and without integrated EMC filter
"SIEMENS" MICROMASTER 440 has everything needed to keep machine wear to a mini- mum.


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บริษัท สหไทย อินดัสเทรียล จำกัด 92/19 ม.1 ต.ศีรษะจรเข้ใหญ่
อ.บางเสาธง จ.สมุทรปราการ 10540
Tel: 0- 2312- 8237, 08- 4427- 3353 Fax: 0- 2740- 4504