Mitsubishi elevator is the top 10 reputed elevator brand in the world, and has big market share in India. Mitsubishi has its own special control system and motor. They are not compatible with other brand control system and motor. So Mitsubishi ruled the after sales service market. Any parts broken, the end users have to go with Mitsubishi costly spare parts. So the users complain a lot but no other choice.
Now INVT has developed EC160 elevator intelligent integrated machine which can drive Mitsubishi motor and replace the whole control system. It can break the monopoly of Mitsubishi on after sales service market. EC160 elevator intelligent integrated machine has the following features.
Resources reducing in the elevator installation, debugging, operation and management.
Max speed: 6m/s Max floor: 64
Intelligent network group control can control 8 elevators at the same time
Embedded high-performance starting compensation technology of non-weighting sensor
Advanced space vector calculation and be compatible to the encoder of AM/SM motor
High-performance current vector control, 180% torque output at zero speed
Low voltage emergency-rescue mode of AC220V single phase UPS, search the direction in light load
Safety enabling hard ware input conform to EN81 standards
Support both serial and parallel communication.
Hand terminal: stand-alone human-machine interface, on-line Chinese/English help system; functions of debugging management, debugging trace management, parameters uploading/downloading, computer data copying
The hand terminal can be connected to the CAN interface in the car for convenient parameters setting
Add TCP/IP internet module for remote debugging and control
Support remote control of TCP/IP protocol
II.Configuration of Mitsubishi elevator
There is one lift out off service due to AMC negotiation fail.
Tab 1 Lift information
10 persons, KG 725
Rated power of motor
Fig 2 Mitsubishi motor and motor nameplate
III.EC160 solution for Mitsubishi elevator retrofitting
1.EC160 electrical configuration
According to the lift configuration and the demanding functions, we provide the electrical solution as follow. Considering higher ambient temperature, one grade higher of intelligent machine rating is selected.
Tab 2 Configuration list
EC160 integrated machine
Display and calling board
Earlier encoder with Mitsubishi motor:
Used FENAC SIN/COS encoder in below pic :
Fixing arrangement in new encoder in below pic:
Used brackets under the new encoder for support with motor base screw to fix the encoder on the bracket, as showing in the below picture:
Modified encoder fixed in above pic
Make the encoder cable connection according to the below list
EC160 Encoder connection
Intelligent integrated: EC160 is the combination of controller and inverter.
Support dual communication methods: Serial and parallel communication.
Simple and stable: 2 sets of CAN communication interface makes the system simple, high efficient and stable.
Easy debugging: LCD operator with 10 rows display can show all the running state information. It makes debugging easier.
ARD function: With single phase 220VAC UPS, EC160 can run to the nearest floor and open the door when grid power is off.
After retrofitting by EC160, the Mitsubishi elevator runs perfectly. The customer is very satisfied. It proofs that the monopoly can be broken. More and more customers will choice INVT EC160 to replace Mitsubishi system in future. EC160 has broad market prospects.