Aybey Elektronik combined its experience of 26 years in production of elevator control system with the experience gained with AE-LIFT motor drives in development of AE-MAESTRO, Integrated Lift Control System. After an intensive work of Aybey R&D team AE-MAESTRO comes with its new and unique design into the lift industry along various innovations.

When AE-MAESTRO is used then the motor windings are connected directly to the device. The conformity of this direct connection to the motor without contactors (Safe Torque Off - STO) has been approved after passing hard tests.

Contactorless control system has several advantages. The first one is the reduction of the cost of the materials used. The second one is significant noise reduction due to absence of the switching elements in the panel. The absence of the mechnical switching elements at the output of the motor driving transistors (IGBT) is the most important advantage in technical aspect. The fact that IGBT currents are always damping naturally in motor windings instead of cut mechanically by any element extends the life of these vital elements considerably.

As stated by the users, we accomplished superior driving comfort in AE-LIFT Motor Drive. The most important reason for this was using a digital signal processor (Digital Signal Processor) instead of a standard microcontroller. The vector control procedure involves very complexed mathematical operations and must be repeated at least 10 thousand times per second. Due to the DSP, which includes special modules for mathematical operations in hardware, these operations can be done much more precisely in a shorter time than a standard microcontroller. Therefore, the performance of a DSP-driven motor drive is always better compared to the performance of the motor drive managed by an industrial microprocessor. So the device can supply 16 kHz carrier frequency and 250 Hz motor frequency.

Motor driving job is dedicated to a DSP in AE-MAESTRO as has been done in AE-LIFT. And in order not to disturb its precision another powerfull micro is employed in lift management. The tasks are shared by two micros and carried out undisturbed. Thus, AE-MAESTRO has a very strong structure thanks to its multiprocessing architecture.

AE-MAESTRO is manufactured in seven different power ratings from 4kW to 30kW. It can be used in new, as well as in one or two speed lifts for modernization purposes. Old machines without encoder can be driven by AE-MAESTRO as open loop. Homelift software is integrated in the device and it can be driven by monophase power supply in a house for low power machines. It supports also many lift standards. Therefore, it can be used easily employed in new elevators as well as in modernization all over the world.

• EN81-1

• EN81-1+A3

• EN81-20/50

• EN81-70

• EN81-72

• EN81-73

• EN81-21

• EN81-28

• EN81-41

The intelligent speed management system is automatically active when encoder data is used as floor selector. It determines the appropriate travel speed depending on the distance to the destination by regarding selected speed parameters. You only need to set the nominal speed of the lift in normal, inspection, rescue, etc modes and all floor levels. Before starting any travel it evaluates the travel curve by considering the saved speed, acceleration, deceleration and S-curve settings. Minimum floor to floor distance can be as small as the door zone. AE-MAESTRO can also use magnetic switches as floor selector where no encoder is present, usually in modernisation of old lifts.

All electrial connections are placed under the front cover. The main hardware configuration of AE-MAESTRO is supplied to support EN81-20/50 lift standard. The device can also be used for the standard EN81-1+A2 or less without door bridging board. Therefore, almost no additional  cards are required in most applications. Two main add-on boards are left as option depending on the standard or motor type, door bridging and absolute encoder boards. Incremental encoder interface is already built in.

The communication between extension or driver units is serial. AE-MAESTRO offers three CAN-ports where two of them are already built in the device. Car network is supplied as fault tolerant CAN to increase the reliabilty and roboustness. CAN2 can be selected as high speed or fault tolerant by using CCI or CSI interface boards.

AE-MAESTRO displays some important inputs, floor number and errors on the front panel. In addition, there is color indicator to give the status of the lift. For example, the green color indicates normal mode, the red color error, and the yellow color inspection mode. A blinking color indicates a lift motion.

Parameter settings and detailed inspection of the device can be carried out by using the hand terminal. The hand terminal can also be used via serial communication line (CANBus). A variety of operations can be done with the hand terminal, such as software update, editing parameters, error review and travel chart monitoring.

Access control systems, such as RFID card or i-Button, are easily connected to car or/and landing staions. Their information are directly sent to the controller via CAN-Bus. The  controller, AE-MAESTRO controls directly the accessibilty of any user to the lift depending on time or specified floor as well as the Access rights given to that user. Similarly, the VIP travel system is also supported.

AE-MAESTRO can be connected to any PC directly or via the Internet using USB or Ethernet interfaces. Lift motion, calls, signals and most of the time variables can be observed instantaneously. Most of the operations which can be done by hand terminal can also be carried out with a PC. The parameter list can be saved into the computer or uploaded from a file to the device.