Page 49 of 84
Purpose
The purpose of the DPM
(Digital Phase Monitor) is to
monitor the line voltage sup-
plying single and three phase
systems, providing the oppor-
tunity to disconnect equip-
ment if the voltages are
outside of the selectable
operational parameters.
Operation
If the voltages and rotation are
within the selectable set-up
parameters, the DPM will ener-
gize the internal relays, trans-
ferring the output contacts. If
the voltages and/or rotation
are outside any of the set-up
parameters, the DPM internal
relays will not energized.
If the line voltage does not
meet all of the set-up param-
eters, the Default screen will
toggle between the voltage
screen showing the actual
voltages and words describing
the fault.
During transitions to relays en-
ergized or relays de-energized,
the remaining time in seconds
is displayed above the present
relay condition (“ON” or “off”).
General Operational Specifications
Line Voltages Monitored: 200 to 240VAC, 1Ø, 50/60Hz
200 to 600VAC, 3Ø, 50/60Hz
Faults:
Overvoltage
Undervoltage
Phase Loss
Phase Rotation
Phase Imbalance
Frequency Out of Range
Set-Up:
Membrane Buttons & Digital Display
• Nominal Line Voltage
• Over/Undervoltage percentage (7% to 15%)
• Trip Time Delay (2 seconds to 10 seconds)
• Re-Start Time Delay (Manual Reset to 4 minutes)
• Phase Imbalance Percentage (3% to 10%)
Screens:
Manufacture Name and Firmware Version
Average Voltage, Frequency, Imbalance, Relay Status
A-B, B-C & C-A Voltages, Relay Status
Nominal Voltage Selection
(Pay attention to 1Ø and 3Ø at the end of the voltages)
Over/Undervoltage Percentage Selection
Trip Time Delay
Re-Start Time Delay
Phase Imbalance Percentage Selection
History with Last 4 Faults
(Wraps back to Manufacture Name and Firmware Version)
Default Set-Up
The default set-up for the DPM as shipped from R-K Electronics is:
Line Voltage:
480VAC, 3Ø
Over & Undervoltage:
±5%
Trip Time Delay:
5 seconds
Re-Start Time Delay:
5 seconds
Phase Imbalance:
5%
Custom Set-Up
The DPM uses 4 membrane buttons to allow the customer to change the set-up
criteria for their particular line voltage and preferred parameters. The following
listings show the arrangement and selections available by moving through the
menu choices. The membrane buttons allow for movement right or left with
wrap around to selection criteria and up and down within a selection for specific
parameters.
You can select the set-up parameters with only the supply voltage connected.
Example:
From the Default screen (A-B, B-C & C-A voltages with relay status)
pressing the right Arrow will take you to the line voltage selection parameters. If
you want to change the nominal voltage to a different voltage, press the Up or
Down arrows. Once you have the line voltage (and number of phases) that you
want displayed on the screen:
1. Pressing either the Right or Left arrow will set the new line voltage parameter
into memory and take you to the next screen, or
2. After 30 seconds of no action, the new voltage parameter will be set into
memory and the screen will go back to the default screen.
513.204.6060 or 800.543.4936 • www.rke.com
2
Figure 18a: Phase Monitor Data
Purpose
The purpose of the DPM
(Digital Phase Monitor) is to
monitor the line voltage sup-
plying single and three phase
systems, providing the oppor-
tunity to disconnect equip-
ment if the voltages are
outside of the selectable
operational parameters.
Operation
If the voltages and rotation are
within the selectable set-up
parameters, the DPM will ener-
gize the internal relays, trans-
ferring the output contacts. If
the voltages and/or rotation
are outside any of the set-up
parameters, the DPM internal
relays will not energized.
If the line voltage does not
meet all of the set-up param-
eters, the Default screen will
toggle between the voltage
screen showing the actual
voltages and words describing
the fault.
During transitions to relays en-
ergized or relays de-energized,
the remaining time in seconds
is displayed above the present
relay condition (“ON” or “off”).
General Operational Specifications
Line Voltages Monitored: 200 to 240VAC, 1Ø, 50/60Hz
200 to 600VAC, 3Ø, 50/60Hz
Faults:
Overvoltage
Undervoltage
Phase Loss
Phase Rotation
Phase Imbalance
Frequency Out of Range
Set-Up:
Membrane Buttons & Digital Display
• Nominal Line Voltage
• Over/Undervoltage percentage (7% to 15%)
• Trip Time Delay (2 seconds to 10 seconds)
• Re-Start Time Delay (Manual Reset to 4 minutes)
• Phase Imbalance Percentage (3% to 10%)
Screens:
Manufacture Name and Firmware Version
Average Voltage, Frequency, Imbalance, Relay Status
A-B, B-C & C-A Voltages, Relay Status
Nominal Voltage Selection
(Pay attention to 1Ø and 3Ø at the end of the voltages)
Over/Undervoltage Percentage Selection
Trip Time Delay
Re-Start Time Delay
Phase Imbalance Percentage Selection
History with Last 4 Faults
(Wraps back to Manufacture Name and Firmware Version)
Default Set-Up
The default set-up for the DPM as shipped from R-K Electronics is:
Line Voltage:
480VAC, 3Ø
Over & Undervoltage:
±5%
Trip Time Delay:
5 seconds
Re-Start Time Delay:
5 seconds
Phase Imbalance:
5%
Custom Set-Up
The DPM uses 4 membrane buttons to allow the customer to change the set-up
criteria for their particular line voltage and preferred parameters. The following
listings show the arrangement and selections available by moving through the
menu choices. The membrane buttons allow for movement right or left with
wrap around to selection criteria and up and down within a selection for specific
parameters.
You can select the set-up parameters with only the supply voltage connected.
Example:
From the Default screen (A-B, B-C & C-A voltages with relay status)
pressing the right Arrow will take you to the line voltage selection parameters. If
you want to change the nominal voltage to a different voltage, press the Up or
Down arrows. Once you have the line voltage (and number of phases) that you
want displayed on the screen:
1. Pressing either the Right or Left arrow will set the new line voltage parameter
into memory and take you to the next screen, or
2. After 30 seconds of no action, the new voltage parameter will be set into
memory and the screen will go back to the default screen.
513.204.6060 or 800.543.4936 • www.rke.com
2
Purpose
The purpose of the DPM
(Digital Phase Monitor) is to
monitor the line voltage sup-
plying single and three phase
systems, providing the oppor-
tunity to disconnect equip-
ment if the voltages are
outside of the selectable
operational parameters.
Operation
If the voltages and rotation are
within the selectable set-up
parameters, the DPM will ener-
gize the internal relays, trans-
ferring the output contacts. If
the voltages and/or rotation
are outside any of the set-up
parameters, the DPM internal
relays will not energized.
If the line voltage does not
meet all of the set-up param-
eters, the Default screen will
toggle between the voltage
screen showing the actual
voltages and words describing
the fault.
During transitions to relays en-
ergized or relays de-energized,
the remaining time in seconds
is displayed above the present
relay condition (“ON” or “off”).
General Operational Specifications
Line Voltages Monitored: 200 to 240VAC, 1Ø, 50/60Hz
200 to 600VAC, 3Ø, 50/60Hz
Faults:
Overvoltage
Undervoltage
Phase Loss
Phase Rotation
Phase Imbalance
Frequency Out of Range
Set-Up:
Membrane Buttons & Digital Display
• Nominal Line Voltage
• Over/Undervoltage percentage (7% to 15%)
• Trip Time Delay (2 seconds to 10 seconds)
• Re-Start Time Delay (Manual Reset to 4 minutes)
• Phase Imbalance Percentage (3% to 10%)
Screens:
Manufacture Name and Firmware Version
Average Voltage, Frequency, Imbalance, Relay Status
A-B, B-C & C-A Voltages, Relay Status
Nominal Voltage Selection
(Pay attention to 1Ø and 3Ø at the end of the voltages)
Over/Undervoltage Percentage Selection
Trip Time Delay
Re-Start Time Delay
Phase Imbalance Percentage Selection
History with Last 4 Faults
(Wraps back to Manufacture Name and Firmware Version)
Default Set-Up
The default set-up for the DPM as shipped from R-K Electronics is:
Line Voltage:
480VAC, 3Ø
Over & Undervoltage:
±5%
Trip Time Delay:
5 seconds
Re-Start Time Delay:
5 seconds
Phase Imbalance:
5%
Custom Set-Up
The DPM uses 4 membrane buttons to allow the customer to change the set-up
criteria for their particular line voltage and preferred parameters. The following
listings show the arrangement and selections available by moving through the
menu choices. The membrane buttons allow for movement right or left with
wrap around to selection criteria and up and down within a selection for specific
parameters.
You can select the set-up parameters with only the supply voltage connected.
Example:
From the Default screen (A-B, B-C & C-A voltages with relay status)
pressing the right Arrow will take you to the line voltage selection parameters. If
you want to change the nominal voltage to a different voltage, press the Up or
Down arrows. Once you have the line voltage (and number of phases) that you
want displayed on the screen:
1. Pressing either the Right or Left arrow will set the new line voltage parameter
into memory and take you to the next screen, or
2. After 30 seconds of no action, the new voltage parameter will be set into
memory and the screen will go back to the default screen.
513.204.6060 or 800.543.4936 • www.rke.com
2
PR Series Installation, Operation, and Maintenance Manual
