CONTROL BOX WITH PLC CONTROLLER.

INTRODUCTION

This control box includes one of the commonest PLCs in
industrial fi eld and it is provided with several digital inputs and
outputs accessible through jacks available on the fore panel of
the equipment.
The programming software of Win environment, supplied
together with the system, enables an easy development of
testing programs with PLC in the most frequent languages of
industrial automation: AWL, KOP, FUP.
Personal Computer and PLC are connected via the cable of
series interface RS-232 of the equipment. The theoreticalexperimental
handbook supplied with the equipment will guide
students effi ciently in the development of exercises.
TRAINING PROGRAM:
This unit enables to develop and analyze the following subjects:
• Architecture of a PLC
• Processing the directions: concept of cycle
• Sunchronous, asynchronous and priority cycles
• Execution, cycle and reaction times
• Boole’s algebra
• Basic programming in AWL, KOP, FUP languages
• Combinatorial logic functions
• Sequential logic functions
• Addressing                                                                                                                                              Timers and counters
• Clock generators
• Monostable and bistable circuits
• Algebraic operations: addition, subtraction, multiplication
and division
• BCD to binary conversion
• Binary to BCD conversion
• Operations of fast counting, frequency measurement and
positioning
• Program blocks
• Programming subroutines
• Interrupts due to external and internal events
• PID controls
• Communication between PLCs: modes
• Diagnostics of inputs and outputs
• Diagnostics of internal states
• I/O forcing and internal variables
• Networks of PLCs
TECHNICAL CHARACTERISTICS:
• Case of sheet steel, chemically treated and painted with
epoxy paint
• Recessed side handles for an easy handling in laboratory
• Fore panel of insulating material, with silk-screen-printed
synoptic representation of diagrams and internal components
of the equipment
• Power supply of 24 Vdc / 3 A for control of digital inputs and
outputs including the electronic protection against overloads
and short circuits
• Power supply of 24 Vdc / 3 A for control of relay outputs
including fuse protection against overcurrents
• 1 digital voltmeter with 3 and ½ digits for measuring the
voltage available in inputs or in analog output. Resolution of 0.1 Vdc
• 1 rotary switch for selecting voltmeter input
• 4 analog V/I inputs: ± 10 Vdc, 0..20 mA
• 1 analog V/I output: ± 10 Vdc, 0..20 mA
• 4 rotary potentiometers for setting analog voltage references
in the range of 0..10 Vdc
• 4 switches for switching voltage/current modes in analog
inputs
• 1 switch for switching voltage/current modes in analog
output
• Internal voltage reference output by the internal regulator of
24 Vdc
• 14 digital standard inputs of which 6 specifi c inputs for fast
counting and frequency measurements
• Simulator for digital inputs with permanent-state and pulse
switches
• 18 digital standard outputs of 24 Vdc of which 2 pulse
outputs at 20 kHz with possibility of interrupt and modulable
pulse duration and frequency
• Safety standard jacks (Ø 4 mm and Ø 2 mm) for connecting I/
Os with peripherals
• Transistor interface of all the digital outputs of which 10 with
relay of capacity 10 Aac / 2 Aac
• Characteristics of PLC:
- power supply: 24 Vdc
- hardware clock included
- buffer battery with duration of 200 days
- working store: 8 kBytes
- data store: RAM of 5 kBytes
- speed: 0.37 μs for binary instruction
- programming interface: RS-485
- network interface: RS-485
- communication: PPI and slave MPI
operational mode: Master/Slave PPI, slave MPI
- 14 digital inputs of 24 Vdc; separation of potential;
protection of reversal of polarity. Bit, byte, word addressing
- special digital inputs: 6 with functions of fast counting (30
kHz), forward/backward counters
- displaying the state of inputs (green LED)
- 18 digital outputs of 24 Vdc / 0.5 A; galvanic separation
from CPU; immunity from short circuit. Bit, byte, word
addressing
- 2 pulse outputs of 20 kHz, with possibility of interrupt;
modulable pulse duration and frequency
- Displaying ouput state (LEDs)
- 4 analog voltage/current inputs
- Resolution of A/D conversion: 11 bits + sign
- Voltage range of analog inputs: ± 10 Vdc
- Current range of analog inputs: 0..20 mA
- 1 analog output
- Resolution of D/A conversion: 11 bits + sign
- Voltage range of analog output: ± 10 Vdc
- Current range of analog output: 0..20 mA
- Selector of operational modes: “STOP”, “RUN”, “TERM”
- Cable RS232 for connecting a PC with adapter RS485
- Single-phase power cord
Power supply: 230 Vac 50 Hz single-phase - 230 VA
(Other voltage and frequency under request)
Dimensions: 415 x 400 x 150 mm
Weight: 10 kg
SUPPLIED WITH THEORETICAL-EXPERIMENTALHANDBOOK