English
1. OVERVIEW
G85139-H1751-U529-D1
© Siemens plc 1999
4/8/99
6
1.
OVERVIEW
The MICROMASTER Vector (MMV) and MIDIMASTER Vector (MDV) are a standard range of inverters with sensorless vector
capability suitable for controlling the speed of 3 phase motors. Various models are available, ranging from the compact 120 W
MICROMASTER Vector up to the 75 kW MIDIMASTER Vector.
Sensorless vector control allows the inverter to calculate the changes required in output current and frequency in order to maintain the
desired motor speed across a wide range of load conditions.
For additional product information such as application examples, part numbers, operation with long cables etc, please refer to catalog
DA64 or to
http://www.siemens.com/micromaster
Features:
·
Easy to install, program and commission.
·
Overload capability 200% for 3s followed by 150% for 60s.
·
High starting torque and accurate motor speed regulation by vector control.
·
Optional integrated RFI filter on single-phase input inverters MMV12 - MMV 300, and three phase input inverters MMV220/3 to
MMD750/3
·
Fast Current Limit (FCL) for reliable trip-free operation.
·
0 to 50
°
C temperature range (0 to 40
°
C for MIDIMASTER Vector)
·
Closed loop process control using a standard Proportional, Integral, Derivative (PID) control loop function. 15 V, 50 mA supply
provided for feedback transducer.
·
Remote control capability via RS485 serial link using the USS protocol with the ability to control up to 31 inverters via the USS
protocol.
·
Factory default parameter settings pre-programmed for European, Asian and North American requirements.
·
Output frequency (and hence motor speed) can be controlled by:
(1)
Frequency setpoint using the keypad.
(2)
High resolution analogue setpoint (voltage or current input).
(3)
External potentiometer to control motor speed.
(4)
8 fixed frequencies via binary inputs.
(5)
Motorised potentiometer function.
(6)
Serial interface.
·
Built-in DC injection brake with special COMPOUND BRAKING.
·
Built-in brake chopper for external resistor (MMV).
·
Acceleration/deceleration times with programmable smoothing.
·
Two fully-programmable relay outputs (13 functions).
·
Fully-programmable analogue outputs (1 for MMV, 2 for MDV).
·
External Options connector for optional multi-language Clear Text Display (OPM2), optional PROFIBUS-DP module or CANbus
module
·
Dual motor-parameter sets available if Clear Text Display (OPM2) fitted.
·
Automatic recognition of 2,4,6 or 8-pole motors by software.
·
Integral software controlled cooling fan.
·
Side-by-side mounting without additional clearance.
·
Optional protection to IP56 (NEMA 4/12) for MIDIMASTER Vector inverters.
