ytuti

1. J.arumugam PC - 100 1
Lab Exercise
1) Write the truth table for the following GATEs and check the output using LADDER
program
a) NAND b) NOR c) XOR
2) Write the output table for the following circuit and verify the output using LADDER
program.
OR
OR
AND
A
B
C
D
E

2. Draw the Relay Logic for the following
requirements and test it using LogixPro

3. 1. Direct Online Starter(DOL Starter)
C1

4. 2. Safety Interlock for Generator Protection
There are 3 motors in a plant. Separate START buttons are
provided to start the motors. One common STOP switch for
switching off all the motors.
Only one motor should be ON at a time. If more
than one motor is ON, Generator will be overloaded.

5. S1 S2 S3
STOP
M1 S1
M2 M3

6. Safety Interlock for Generator Protection
2a. Develop the relay logic control with the following
safety interlock.
If any motor is switched ON, while another
motor is running, it should not be started. Any
motor can be started only after manually
switching OFF the currently running motor.

7. Safety Interlock for Generator Protection
2b. Develop the relay logic control with the following
safety interlock.
If any motor is switched ON, while another
motor is running, currently running motor should
OFF automatically and the new one should be
started.