Mitsubishi Electric a2 Series - 1 Introduction; Special Features of the Controller

α 2 Simple Application Controllers
Introduction 1
1 - 1
1. Introduction
The
α
2 Series Controllers provides supervisory control for use in the home, office, factory or
wherever you need it. The
α
2 Series Controllers offers flexible I/O control for varied
applications:
Applications
The
α
2 Series is designed to be used for automatic applications including:
- Lighting, air-conditioning or watering control
- Opening and closing gates
- Security systems
- Domestic systems
- Temperature control
However, the
α
2 Series Controllers is not designed to be used in the following applications:
- Applications where high reliabilities such as nuclear power control, railway facilities,
airline facilities, vehicles, combustion equipment and medical equipment are required.
- Applications in life critical situations
Please contact a Mitsubishi distributor for more information.
1.1 Special Features of the Controller
1 ) Display messages and Function Block data
The
α
2 Series Controller can display the state of operation and the status of an alarm on
the LCD screen as a message. The
α
2 Series Controller allows the values of timers and
counters to be changed while in RUN mode.
- Total characters on LCD display: 12 characters x 4 lines
- Display items: Message, values (current or set) of timers and counters, analogue
values, etc.
2 ) Program Input
The user can program directly from the front panel or use the windows based
AL-PCS/WIN-E programming software Ver. 2.00 and upwards. Pictorial representations of
data are used to connect function blocks in both methods. Please refer to the
α
Software
Manual for details on AL-PCS/WIN-E.
3 ) Enhancement of clock function
The calendar timer function can switch inputs to time-dependent controls on a daily or
weekly basis.
4 ) Analog input, 0-10V/0-500
The DC input type for the
α
2 Series accepts 0-10V signals with a digital range of 0-500
(50 divisions per volt).
5 ) High Speed Counter (max. 1kHz)
The
α
2 Series Controller can have two dedicated high speed counters when using
AL2-4EX EI1 and EI2.