General Purpose Relay Mapping - Eaton Power Xpert PXR Series Manual

5 External wiring of the trip unit

5.3 General purpose relay mapping

The PXR family supports optional general purpose relay contacts (1 to 3 relays depending on the PXR model and the breaker
frame). Any relay in the PXR can be configured to any one of the functions. The mapping is conveniently done using the
Power Xpert Protection Manager software. Relays require auxiliary power to operate.
function name
Aux contact
Bell contact
Trip alarm - overload
Trip alarm - neutral current
Trip alarm - short delay
Trip alarm - instantaneous
Trip alarm - short circuit
Trip alarm - ground fault
Trip alarm - (ARMS) Maintenance
Mode
Trip alarm - all trips
Alarm - high load alarm 2
Alarm - high load alarm 1
Alarm - high temperature
Alarm -ground fault pre alarm
Alarm - thermal memory
Alarm - watchdog and aux power
Alarm - low battery
Fault - internal
Fault - health
Fault -communication
Alarm - all fault alarms
Maintenance Mode active
ZSI active
ZSI input received
ZSI output sent
COMM open breaker pulsed
Output
additional relay operation for motor protection PXR25
Function name
Trip alarm - Over Voltage
Trip alarm - Under Voltage
Trip alarm - Voltage Unbalance
Trip alarm - Current Unbalance
Trip alarm - Reverse Power
Trip alarm - Phase Reversed
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Description of relay operation:
"the relay will close when..."
breaker is closed.
breaker is tripped.
there is a long or over-temperature trip.
there is a neutral current trip.
there is a short delay trip.
there is an instantaneous trip.
there is a short, inst or override trip.
there is a ground fault trip.
there is a Maintenance Mode trip.
there is any type of protective current (all the above) trip.
current flow is greater than set point (adjustable from
50% to 120% of Ir). Note: alarm1/alarm2 LED will BLINK.
current flow is greater than set point (adjustable from
50% to 120% of Ir). Note: the alarm1/alarm2 LED will ON.
temperature exceeds 5C below the level of the
temperature trip setting.
ground current is greater than the set point (adjustable
from 50% to 100%).
the thermal memory value is >75%.
auxiliary power is active and the trip unit is healthy and
operating.
the battery is below 1 bar (25%).
there is an internal fault detected.
the health value is below 25%.
any external communications error occurs.
any of the above 4 faults are active.
the trip unit is in the Maintenance Mode.
the ZSI function active.
a ZSI INPUT signal is received.
a ZSI OUTPUT signal is sent.
an OPEN breaker command from any of the
communications channels is received.
an output ON command is received on any of the
communications channels.
"The relay will close when..."
voltage is greater than pickup for longer than the pickup
time (See setpoint Group 5 configuration)
voltage is less than pickup for longer than the pickup time
(See setpoint Group 5 configuration)
difference between the max and min voltages of all three
phases is greater than pickup for longer than the pickup
time (See setpoint Group 5 configuration)
difference between the max and min Current of all three
phases is greater than pickup for longer than the pickup
time (See setpoint Group 5 configuration)
reverse real power is greater than the pickup for longer
than pickup time (See setpoint Group 5 configuration)
phase reversed for >200ms (See setpoint Group 5
configuration)
"the Relay will open when..."
breaker is open.
breaker is not tripped (open or closed).
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
current flow falls 5% below the set point.
current flow falls 5% below the set point.
temperature falls 5C below the trip setting.
ground current falls 5% below the set point.
the thermal memory value is <70%.
there is an error in the trip unit from any of the self-diagnostics.
the battery value is 1 bar (25%) or higher.
RESET button is pressed or communications reset command received.
the health value is at or above 25%.
RESET button is pressed or communications reset command received.
all of the above four faults are inactive.
when the trip unit exits Maintenance Mode.
ZSI is not active.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
two seconds after the OPEN breaker command is received.
an output OFF command is received on any of the communications
channels.
"The Relay will open when..."
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.
RESET button is pressed or communications reset command received.