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13
SAMPLE PROGRAMS
FACTORY/SCHOOL SCHEDULE
Opening bell at 8am announces start of work or class (bell to last 10 sec and stop): Bell at 10:30am announces start of coffee break, Bell at 10:45am announces
end of coffee break, Bell at 12 noon announces lunch, Bell at 12:45 announces end of lunch, and Bell at 5pm announces end of work day.
PROGRAMMING
For the six time periods 1 hour factory/school schedule, six Time Switches are required. 1, 2, … 6 represent the six Time Switches.
• Timer T1 ensures that the duration of the output is 10 seconds only.
• Q1 represents the Output Coil (Alarm/Bell in this case).
• Double click on the SPR Soft icon to launch the SPR Soft Software application.
• Click on File > New to launch a new Program window.
TIME SWITCH SELECTION & PARAMETER EDITING
1. Click on the Time Switch symbol in the I/O selector window and select Time Switch 1 ( 1).
2. Move the cursor to the ‘Contact 1’ column of the first row and left click on the block to place the Time Switch.
3. Right click on the Time Switch and select properties to open the properties window.
4. In the Weekday settings option select ‘From’ as Monday and ‘To’ as Saturday.
5. In the Daily Duration option enter the start time as 10:30 and since we want the siren for 10 sec. enter end time as 10:31.
6. Similarly select the other 5 Time Switches and enter the times as described above and place them in the contact 1 column of lines 2, 3, 4, 5 & 6.
7. Select Timer T1 from the I/O selector window and place it in the coil column of line 1 and contact column of line 7.
8. Open the Timer properties window and select the mode as Interval and enter the time duration i.e. SP as 10 sec.
9. Connect the lines from all the Time Switches to the Timer:
10. Select Output Q1 from the I/O selector window and place it in the coil column.
11. Right click on output Q1 and select the option ‘State Change: Contactor.’
LADDER PROGRAM
OUTPUT CONFIGURATION
TIMER SELECTION & PARAMETER EDITING