Basic Setup Part 1


Welcome. This video will walk through the basic set up of a FUSION or Compact FUSION SCR power controller. We will do so in four parts: first, mounting, wiring, and basic controller operation. And a second video will cover Full scale settings.

First, you will need to mount the controller. Be sure to do so at least 3 inches away from other devices in order to ensure proper ventilation. Next, ground the controller as shown.

Then we need to connect line power,  load connections, and control power. For single phase and three phase 2 leg controllers, you will also need to connect a reference voltage to the line ref input shown here.

On the side of the controller, locate the P1 connector, found here. Note that Pin 7 and Pin 9 are the run and reset - used to enable, disable, or reset the controller. These pins are commonly wired with a run/stop switch.

Please note that while opening the run/stop on Pin 7 and Pin 9 inhibits firing of the SCRs within one half-cycle, the only safe way to service the controller is by having the mains disconnected by mechanical means. SCRs are solid state devices and cannot be considered a mechanically safe disconnect.

You will see voltage on the load side of SCRS even when not firing

We will wire Pin 7 and Pin 9 closed to enable controller operation in the following examples.

Next we'll cover analog setpoints.

You can use the built-in display on the controller to monitor and change your controller settings. Scroll through the settings using the arrow keys to “Setpoint Type.” The display tells us that we are currently using analog control – this is the default setting, and means that Pin 7 and Pin 8 on P1 are open.

Use the arrow keys to view Setpoint Selection - we are using setpoint 1. On P1, this means that Pin 7 and Pin 10 are open. Then we can scroll down further on the display and see that Setpoint 1 is currently reading a 16.78 mA  analog command signal shown here connected to pins 2 & 3.

To switch to analog setpoint 2, simply close Pin 7 and 10 and move your analog command signal to pins 4 & 5.

Now let's go back and wire the controller for Digital Setpoint 1. To do so, close Pin 7 and Pin 8 to select the Digital Setpoint and make sure Pin 10 is left open to select setpoint 1. Then scroll to Digital Setpoint 1 on the display to see the digital setpoint command. We will come back and edit this setting in a minute.

First we'll go over basic controller operation. We've already mounted, grounded, and wired the controller. Let's take a closer look at our indicator LEDs.

The top LED will turn green after you've connected Universal Input power - this is what powers the controller's electronics. The second LED will turn green when the mains input power is present. The Status LED has three settings: green for a run state, orange for a warning alarm, and red for an inhibit alarm. If the Status LED is off completely, no alarms are present but the controller is not enabled

We've wired the controller for analog control, and we'll use an analog source to change our settings; in our case we've connected to our controller with a PLC.

From the display we can confirm that we're using analog control and setpoint 1. We can also scroll down using the arrow keys to view the output of both setpoints, and use our PLC to increase or decrease output between 4 - 20 mA.

Let's go back and try this using a Digital setpoint. To do so, Pin 7 and Pin 8 must be closed. Then we scroll on the display to Digital Setpoint. The dot next to the name indicates that we can edit the setting, so we press the green button and use the plus or minus keys to change the output from 0 to 100 percent. Once we reach the right value, we press the green button again and save the change - we are now operating with 85 % power.

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