Toshiba AS3 AC Drive Analog Speed Reference from AutomationDirect

In this video, we will set the Toshiba AS3 VFD to use an analog signal for its speed reference. The drive is currently set for three-wire control, and the capacitive touch wheel is used to set the speed. From Standard Mode, press the escape button. Scroll to Basic Parameters and press okay. Scroll to FMOD frequency command, select one, and press okay. Let's look at our options for an analog speed reference. Select option one, terminal RR, which is the terminal used for potentiometer input or a 0 to 10 volts DC input. For a 0-to-10-volt input, terminals CC and RR are used for wiring. For a potentiometer input, terminals CC, RR, and PP are used for wiring. Select option two, terminal RX, which is the terminal used for a minus 10 to 10VDC input. Use terminal CC and RX for wiring. Select option three, terminal II, which is the terminal used for a 0 to 20 or 4 to 20 milliamp input. Use terminals CC and II for wiring. Select options four or five if you are using an add-on IO module for the VFD. For our example, we are going to use a 0-to-10-volt signal. Select option one, terminal RR, and press okay. Press the escape button twice to return to the standard mode. Now press the escape button to go to setting mode and select option two: Direct Access. We are going to look at parameters 2012, 203, and 204. These are used to scale the frequency with the 0-to-10-volt signal. Use the scroll wheel and the F2 and F3 keys to select parameter 201. Then press okay. Parameter 201 is the minimum percentage of our 0-to-10-volt signal that we will use for our reference. We will stay at zero, but you can change it for your needs. Use the scroll wheel and the F2 and F3 keys to select parameter 202. Then press okay. Parameter 202 is the minimum frequency used with the minimum value from parameter 201. For our example, at 0 volts DC, we want a frequency of 0 hertz. Use the scroll wheel and the F2 and F3 keys to select parameter 203. Then press okay. Parameter 203 is the maximum percentage of our input signal, 10 volts, that we will use for our reference signal. Use the scroll wheel and the F2 and F3 keys to select parameter 204. Then press okay. Parameter 204 is the maximum frequency used with the maximum value from parameter 203. At 10 volts DC, we want a frequency of 60 hertz. Press the escape button repeatedly until you return to the standard mode. Here, I'll give our Toshiba AS3 drive a run signal and a speed reference. Notice the drive responds to the speed reference.