Download PLC Laboratory 2 Sinking and Sourcing Input Devices

Electrical and Electronic Engineering Department
ELEG3243 Programmable Logic Controllers
PLC Laboratory 2
Sinking and Sourcing Input Devices
FORMAT AND STANDARDS FOR LABORATORY ASSIGNMENTS
1. The laboratory report is expected to conform to the format and standards described and illustrated below.
Use computer word processor for preparing the laboratory report.
2. Must have a title page, which should contain the following information:a)
b)
c)
d)
e)
Report title
Student's full name (please print)
Course number
Due date
Actual date of assignment submission
3. Must include your own observations and conclusion.
4. Appropriate information, sketches and diagrams
6. Description for each diagram, circuit, and figure.
Name:
Due Date:
Submission Date:
Lecturer:
18 Sep 2015
Tan Teck Siang
OBJECTIVES
1. Identify the input module of the Mitsubishi FX-series PLCs.
2. To make students familiar with the sinking and sourcing input modules.
3. To learn the wiring for various input modules.
EQUIPMENT AND SUPPLIES
1.
2.
3.
4.
5.
6.
7.
Mitsubishi FX-30MR and FX-14MT PLC
T0H Reed Switch
12V 10W Power LED
ML7 Optical Sensor
Toggle Switches
Breadboard
Neodymium Magnet
INTRODUCTION
Sinking and Sourcing Concepts
PRODECURE
Part 1 Familiarize with ML7 Optical Sensor
1. The ML7 optical sensor and its connection diagram are shown in Figure 2-1. It's important for you to
learn how to connect the sensor in sinking or sourcing mode.
Use the breadboard to connect the ML7 and the 10W LED in sinking and sourcing mode and record
your observations in the space below.
Figure 2-1 TH0 Magnetic Switch and Connection Diagram
Observations:
Part 2 Familiarize with Reed Switch or Magnetic Sensor
1. A reed switch embedded inside the sensor detects the magnetic field and closes a contact able to
drive directly the load. Versions with three wires or without LED don’t have voltage drop on
contacts. On the two wires with LED version you must consider a little voltage drop, to be
considered for the series connection of more sensors.
2. The T0H switch and its connection diagram are shown in Figure 2-1. Observe how the switch is
installed on pneumatic cylinders. Record your observations in the space below.
Figure 2-2 CKD Magnetic Switch and Connection Diagram
Observations:
Part 3 Sinking Input Device and Sourcing Input Module Connection
1. Connect the PLC’s input module in current sourcing mode.
2. Connect the toggle switch to the PLC (X0 input) and other necessary items for proper operation of
the system. The input device must be in current sinking mode.
3. Turn on the toggle switch and record your observations.
4. Connect the TH0 reed switch to the PLC (X1 input) and other necessary items for proper operation
of the system. The input device must be in current sinking mode.
5. Move the neodymium magnet across the reed switch and record your observations.
6. Connect the ML7 optical sensor to the PLC (X2 input) and other necessary items for proper
operation of the system. The input device must be in current sinking mode.
7. Move your hand across the sensor and record your observations.
Observations:
Part 4 Sourcing Input Device and Sinking Input Module Connection
1. Connect the PLC’s input module in current sinking mode.
2. Connect the toggle switch to the PLC (X0 input) and other necessary items for proper operation of
the system. The input device must be in current sourcing mode.
3. Turn on the toggle switch and record your observations.
4. Connect the TH0 reed switch to the PLC (X1 input) and other necessary items for proper operation
of the system. The input device must be in current sourcing mode.
5. Move the neodymium magnet across the reed switch and record your observations.
6. Connect the ML7 optical sensor to the PLC (X2 input) and other necessary items for proper
operation of the system. The input device must be in current sourcing mode.
7. Move your hand across the sensor and record your observations.
Observations: