Power View
From the Power screen, you can view and configure the drive power settings as follows.
The MKD-C displays an overview of power for all devices, while the MKD-N displays power only for that device.
| Section | Element | Description | Parameter | Parameter |
|---|---|---|---|---|
| Voltage | VBus Gauge | A graphical gauge representation of the DC bus voltage, including ranges for warnings and faults. The slider adjusts the zoom level of the gauge. | VBUS.VALUE | VBUS.VALUE |
| Under Voltage Fault Threshold | Sets the value at which an under voltage fault will occur | VBUS.UVFTHRESH | ||
| Under Voltage Warning Threshold | Sets the value at which an under voltage warning will occur | VBUS.UVWTHRESH | VBUS.UVWTHRESH | |
| Actual Value | Displays the current actual voltage value | VBUS.VALUE | VBUS.VALUE | |
| Over Voltage Warning Threshold | Sets value at which an over voltage warning will occur. Setting a value of 0 generates no warning. | VBUS.OVWTHRESH | VBUS.OVWTHRESH | |
| Over Voltage Fault Threshold | Sets value at which an over voltage fault will occur | VBUS.OVFTHRESH | VBUS.OVFTHRESH | |
| Under Voltage Fault Mode | Sets the behavior for when an under voltage fault are monitored. | VBUS.UVMODE | VBUS.UVMODE | |
| Input | Input Mains | Sets whether the mains input is DC or AC. | VBUS.DCOPERATION | |
| Nominal AC Line | Sets the operating voltage of the drive. | VBUS.ACNOMINAL | ||
| AC Line Phases | Sets whether the AC line input to the DC bus is single or three phase, and whether phase loss detection is active. | VBUS.THREEPHASE | ||
| Input | Input Mains | Sets whether the mains input is DC or AC. | VBUS.DCOPERATION | |
| Operating Voltage | Used to change voltage thresholds, allowing -07 drive types to work at a -06 drive's voltage threshold. | VBUS.HALFVOLT | ||
| DC-Bus Share | Precharge Timeout | Sets a timeout for the MKD-C's precharge process. | VBUS.PRECHARGETO | |
| Output | Voltage - Disable Mode (All Strings Tab) | Used to keep drives connected to MKD-C enabled, even when the MKD-C loses its high voltage supply. | STRINGS.DISMODE | |
| Actual Output Voltage (String 1-3 Tabs) | Displays the actual output voltage on the individual string. | STRINGx.VVALUE | ||
| Total Current - Actual Value (All Strings Tab) | Displays the combined current of all strings. | STRINGS.IVALUE | ||
| Current - Actual Value (String 1-3 Tabs) | Displays the current of the individual string. | STRINGx.IVALUE | ||
| Current Warning Threshold (All Strings Tab) | Sets the combined warning threshold of the individual strings. | STRINGS.IWTHRESH | ||
| Current Warning Threshold (String 1-3 Tabs) | Sets the warning threshold for the individual string. | STRINGx.IWTHRESH | ||
| Current Fault Threshold (All Strings Tab) | Displays the combined fault threshold of all strings. | STRINGS.IFTHRESH | ||
| Current Fault Threshold (String 1-3 Tabs) | Displays the fault threshold of the individual string. | STRINGx.IFTHRESH | ||
| Total Power - Actual Value (All Strings Tab) | Displays the combined total percentage of output power of all strings | STRINGS.I2TVALUE | ||
| Power - Actual Value (String 1-3 Tabs) |
Displays the total percentage of output power for the individual string. |
STRINGx.I2TVALUE | ||
| Power Warning Threshold (All Strings Tab) | Sets the combined output power warning threshold percentage of all the strings. | STRINGS.I2TWTHRESH | ||
| Power Warning Threshold (String 1-3 Tabs) | Sets the output power warning threshold percentage of the individual string. | STRINGx.I2TWTHRESH | ||
| Power Fault Threshold (All Strings Tab) | Displays the combined output power fault threshold percentage of all the strings. | STRINGS.I2TFTHRESH | ||
| Power Fault Threshold (String 1-3 Tabs) | Displays the combined output power fault threshold percentage of the individual string. | STRINGx.I2TFTHRESH |
See Regeneration for more information about regen resistors and sizing regen resistors.
Operating Voltage
Operating voltage can be selected by the user to allow 480VAC drives to work on 240VAC input supplies.
The VBUS.ACNOMINAL parameter has an effect on the following voltage-thresholds:
- DC-bus over-voltage threshold (see VBUS.OVFTHRESH).
- The regen-resistor enable/disable voltage thresholds.
- The inrush-relay enable/disable voltage thresholds.
A power-cycle is needed after changing the value and saving the parameter on the NV memory of the Drive, since the voltage thresholds mentioned above are read during the boot-sequence of the drive.
