TECO SG2 Series Manual
Programmable logic relay application example
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Also See for SG2 Series:
- User manual (175 pages) ,
- User manual (104 pages) ,
- Operation manual (189 pages)
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Summary of Contents for TECO SG2 Series
- Page 1 SG2 PLR Application Examples SG2 Programmable Logic Relay...
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Page 2: Application Illustration
Application Illustration 1. Lighting Control for Staircase 1.1 Requirement for Staircase Lighting When someone goes up-stair or down-stair, the lighting system shall be energized to provide sufficient luminance. After the walker passes the staircase, lighting system shall be turned off in five minutes automatically or manually. - Page 3 Auto lighting control system for the staircase The light is on whenever the switch is turned on. Lighting system shall be turned off in a few minutes automatically or manually Shortcoming: The user has no way to reset the turn-off time. 1.3 Apply SG2 in Lighting System Devices Applied Lamp H1...
- Page 4 Ladder： FUNCTION： FBD： 2 Auto Door Control The auto doors are very popularly installed at the entrance of supermarkets, mansions, banks and hospitals. 2.1Requirement for Auto Door Control It automatically opens whenever a person is approaching. The door remains open for a certain period and closes if no visitor is present. - 3 -...
- Page 5 2.2 Traditional solution Whenever B1 or B 2 senses the approach of a visitor, the door is actuated to open. After an elapse of time, B1 or B2 senses no presence of a visitor; MC 4 will close the door. 2.3 Apply SG2 in Door Control System Applying SG2 in door control system can simplify the circuit.
- Page 6 Devices Applied MC1 main door open contactor MC2 main door close contactor S1(NC contact) closing limit switch S2(NC contact) opening limit switch B1(NO contact) outdoor infrared sensor B2(NO contact) indoor infrared sensor Wiring Diagram and Program with SG2 applied in door control system. - 5 -...
- Page 7 Ladder： FUNCTION： FBD Operation Flow： - 6 -...
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Page 8: Ventilation Control
3. Ventilation Control 3.1 Ventilation System Requirement The main function of the ventilation system is to blow in the fresh air and blow out the waste air as shown in the below drawing The room is provided with exhausted gas blower and fresh air blower The flow sensor control the blowing in and out operation Over pressure is permitted at no time. - Page 9 The ventilation system is wholly controlled by the airflow monitor. If there is no flow air in the room after a designated duration of time, the system will activate the warning system so the user shall shut off the system. Devices Applied MC1 main contactor MC2 main contactor...
- Page 10 Wiring Diagram and Program with SG2 applied in Ventilation System. Ladder： - 9 -...
- Page 11 FUNCTION： FBD Operation Flow： 4. Plant Gate Control 4.1 Requirements for Plant Gate Control The main purpose of the plant gate is to control the access of truck, which is manually operated by the gate guard. - 10 -...
- Page 12 The door guard controls and oversees the opening, closing of the plant door gate. The stop switch can be activated at any time regardless of the gate in fully open or close condition. The alarm light will be activated for 5 seconds in advance before the gate operation.
- Page 13 Ladder： - 12 -...
- Page 14 FUNCTION FBD: 5．Counting Control for Packing Machine Requirement： 1) The packing cycle is that it begins counting the finished products in the assemble line, when the counting value reaches 12, it proceeds packing operation which takes 5 seconds. After finished, it begins a new cycle. 2) It simultaneous counts the finished packs of product.
- Page 15 value reaches 12 and a timer is employed to have a delay of five seconds. The counter will be operated in mode 3 or mode 4 in an effort to keep the accurate counting even in case of power failure. Devices Applied I1：co unting sensor;...
- Page 16 Ladder： FUNCTION： FBD： - 15 -...
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