How to Setup a Repeating Timer Function (CTT) for Factory Automation at AutomationDirect

There are several detailed videos on the Counter Timer Tach units including setting up the unit, so please watch these videos for further support. In this video, we set up a quick and basic program in the Counter Timer Tach or CTT like this one to provide an on/off counter function. We want a timing function of 45 seconds on, followed by 1 hour of off time, and then repeat. We could set up the timer to be triggered by an input such as a button, switch, or sensor, but in this case, we want the timer to be free running, does not require a start signal, and never require user intervention. The user manual and Quick Start guide can be downloaded from our website as shown. The user manual is quite long and in depth, so for this example we refer to Chapter 3 of the user manual or we could have referred to the Quick Start guide. We are using the model CTT-AN-D24 which is a 24-volt DC model. Our output will be wired to a blue indicator light for reference but could be any style of output like a relay, a solenoid, or other field device. The wiring connection is as follows: The 24VDC power for the CTT is controlled by a selector switch which also powers a red indicator light to show power. Pin 4 - 0 Vdc Pin 5 - 24 Vdc Pin 6 is jumpered to Pin 8 which auto starts the cycle timer. Pin 10 - external power supply for output and Pin 15 is the connection to output device which is our blue indicator light. Programming the unit: Using the CTT menu, we press and hold the mode button for 3 seconds to enter the function menu. Functions: (FuNC) we select time Timer Mode: (t node) we select up Output Mode: (t otnd) we select repeat cycle timing or rCY which is a repeat cycle. Select Display Unit: (Unit) - S 1 is seconds Output 1: (Out 1) we input 45 seconds Reset Signal: (rtSr) (This is the minimum width of the reset signal) The default is 20ms, and we leave it at this setting. Select input signal type: (+nPtLC) since we are using Pin 6 jumpered to Pin 8 for an auto restart, we must configure the input type for PNP. Once the CTT is programmed, we press and hold the menu button for 3 seconds to enter the run mode. Now, we change the preset the default is 10 seconds. The preset on the main screen is your off time and would be 3645 seconds which is 3600 seconds in 1 hour plus 45 seconds for the on time. Using the keypad, we can select the digits and use the up or down buttons to change the preset to the desired time. Now that the timer has been programmed, let's run the application. We see the output turn on for 45 seconds, then off for 1 hour. And it repeats automatically. Perfect! Thank you for watching our video. Please check out other videos in our library at Automationdirect.com.