DISPLAY SPECIFICATION
1. DISPLAY shows the drawn current in milliamps (mA), percent of full scale of current; control voltage in volts (Vdc), percentage of full scale of available control voltage, and the number of Program Iterations.
2. ADJUST knob used for manual adjustment of drained current or control voltage. When the adjusting knob is turned slowly, the regulation is adjusted in slow increments. When the adjustment knob is turned rapidly the regulation will adjust quicker. (This feature is supplied only with PN.0020501 and PN.0020502).
3. CURRENT pushbutton press the button to switch from displaying current to displaying the percentage of full scale current. The LED located directly over the pushbuttons will change color from green to red. (This feature is supplied only with PN.0020501).
Current Scaling setting
Note: In order to set scaling, the inductive or resistive load must be connected to the DPS-OF terminals 1 & 2.
· Press the CURRENT pushbutton and hold until the LED color changes to orange.
· Release the CURRENT pushbutton and rotate the ADJUST knob in a clockwise direction until a new full scale of current is acquired.
· Press the CURRENT pushbutton again to save the new full scale of current. The next time the DPS device is turned ON, the display will retain the new full scale of current.
· Resetting to full-scale - press the CURRENT pushbutton and hold until the LED color changes to orange. Press the pushbutton again to save the new setting. The next time the DPS device is turned ON, the display will return to full-scale of current.
The initial factory scaling is assigned based on the DPS rated current see Product list for DPS specifications. Reset can be also performed in the PC Mode. Command I0FFF[CR] will reset the DPS scaling register to the initial factory setting. For more information see programming section.4. CONTROL VOLTAGE pushbutton (CTRL. VOLT) - press the button to switch from displaying the control voltage to displaying the percentage of control voltage. The LED, located directly over the pushbuttons will change color from green to red. To save the settings press and hold the CTRL VOLT pushbutton until the LED changes color to orange. The next time the DPS device is turned ON, the display will retain the enlisted settings. This includes either displaying current, % of full scale of current, control voltage, or % of available control voltage it depends which setting was displayed last, before it was saved. The other accessible setting assortment is a selection of either Table Mode or Manual Mode operation. (This feature is supplied only with PN. 0020501).
Note: when the DPS is used as the Master Controller, saving the Program Mode settings will not automatically start the Master Controller program the next time the DPS device is turned ON. To execute a Master Controller program, the PROGRAM pushbutton must be manually pressed and held (see PRGRM pushbutton description below).
5. PROGRAM pushbutton (PRGRM) - allows for the selection of the DPS operation. The selections are: Manual Mode, Table Mode, or Program Mode. Press the PROGRAM pushbutton momentarily to switch between Manual and Table Mode. Press and hold the pushbutton to select Program Mode. (This feature is supplied only with PN. 0020501).
· A green LED indicates Manual Mode operation. The control over the applied current is carried out manually by the ADJUST control knob, 0 to 5Vdc, or RS-232 serial port.
· A red LED indicates Table Mode operation. In the Table Mode, the output current is altered to a specific process requirement. The control volt vs. current data is stored in the device memory - the Table. Therefore, the applied current to a load comes from the table data. Control can be applied either manually by the ADJUST control knob, 0 to 5Vdc, or RS-232 serial port. The Table Mode operation is useful for Master-Slave applications. In this case the DPS device can operate as a Slave which is managed by the Master Controller DPS. The Master Controller calls for data stored in a Slave device table and commands the Slave to act accordingly.
· An orange LED indicates Program Mode operation. In the Program Mode the DPS device operates as a Master Controller and the manual control of the device is not possible. However, the following actions are allowed during the Program Mode operation:
o To pause the program operation in motion, press the PROGRAM pushbutton once. This will hold the program operation.
o To restore the program operation press and hold the PROGRAM pushbutton until the LED changes to orange. The orange color indicates that the program operation is restored.
o To re-start the program operation from beginning, turn OFF the ON/OFF switch, wait several seconds and turn ON the switch again. Then, press and hold the PROGRAM pushbutton until the LED changes to orange. The orange color indicates that the program re-started.
During the Program Mode the following displays can be viewed: drawn current in milliamps (mA), percent of full scale of current; control voltage in volts (Vdc), percentage of full scale of available control voltage, and the Program Iteration number. To view the Program Iteration number, turn the ADJUST knob clockwise to display the lower 4 digits of the iteration loops, then turn the ADJUST knob counterclockwise to display the higher 4 digits of the iteration loops. The total number of cycles should be read as a combined number of the higher and lower four digits. Example: if the display of the higher 4 digits shows number 0013, and the lower 4 digits number 2435, the total number of cycle is 132,435.
ARD-4 dimensions and connection
Schematic of ARD-4
Connection diagram for the direct control by ARD-4. The diagram on the right shows the connection of ARD-4 for direct handling of the "ON-OFF" switching operation. The supporting power supply must not exceed 24Vdc and 250mA of current per channel. The external power supply is not included with ADR-4. However, if requested, Magtorx can appropriately size and supply the supporting power supply. In some cases, if total maximum operational current is within the DPS specification, the Master DPS can support ARD-4 operation.
Connection diagram for the external relays controlled by ARD-4. The above diagram shows a connection where ARD-4 is used to operate the "ON-OFF" switching of external relays, which can handle a significantly higher current for the ON-OFF control. The supporting power supply must not exceed 24Vdc and 250mA of current per channel. The external power supply is not included with ADR-4. However, if requested, Magtorx can appropriately size and supply the supporting power supply. The ARD-4 driver can operate any external relay that requires up to 24Vdc and a maximum of 250mA current for the relay's excitation coil. In some cases, if total maximum operational current and voltage is within the DPS specification, the Master DPS can support ARD-4 operation.
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