Introduction to the PIR motion sensor We will use PIR Motion Sensor (Passive Infrared) to detect movement. We can use the PIR sensor for security If the sensor detects movement, we can sound an alarm. Another use for the PIR sensor is to automatically energize a light when detecting Read More »
Introduction to the Photo Resistor (LDR) A photo resistor (LDR) will change it’s resistance based on the lighting we apply to this component. Also known as a Light Dependent Resistor, we use them in our every day life. We use photo resistors to energize night lights in our house. Furthermore, Read More »
Introduction to Hiding Objects When Logged Out For security reasons, there might be some objects on a display screen that you would like to hide until a particular user is logged in. This could be a temperature preset, or a timer preset that you don’t want a standard operator to Read More »
Introduction to the Operational Amplifier The Operational Amplifier (Op-Amp) is very versatile. We can use the Op-Amp to compare voltages, or to amplify audio signals. By comparing voltages, we can build a voltage regulator circuit that is controlled by transistors. When using the op-amp as an amplifier, Read More »
Introduction to Capacitance Capacitance opposes a change in voltage. The unit for a capcitor is a “Farad”. We use capacitors to filter the “ripple” effect when converting AC to DC. We will also use capacitors in resonator circuits, such as a tuner for an AM or FM radio. Read More »
Introduction to Zener Diodes Zener diodes allow conventional current to flow normally from the anode to the cathode, as any other diode. The Zener diode has a special feature, however. When we use this in reverse bias mode, the zener will begin to conduct current at a certain voltage. Read More »
Introduction to Voltage Regulation We need voltage regulation when we need to reduce the voltage for our projects. If the components for your project require 5v, and you have a 9v battery, we can use a voltage regulator get to the 5v needed. There are two main ways that we Read More »
Introduction to FactoryTalk View Parameters We use FactoryTalk View Parameters to identify placeholders on a screen. For example: If we have 9 tanks in a tank farm, you can just create one tank screen. The objects on the tank screen will use place holders instead of tags. When the operator Read More »
Introduction to Information Messages Information messages are useful for informing the operator of various events that occur on the equipment. This is not an alarm, because the Alarm feature is used for that. An example of an information message include the fact that the machine has entered a Read More »
Introduction to FactoryTalk View Alarms FactoryTalk View alarms are used to inform the operator that a specific condition has occurred. Examples include a high oil temperature, low water pressure, or even a jam on a conveyor system. We will configure FactoryTalk View alarms lto look for a “Trigger”. When the Read More »
