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MX28B1200/2400 MX28B1200/4800 –48 VDC User’s Manual Page 44
PARAMETER NAME/
[MENU LOCATION]
DESCRIPTION DISPLAY SCREENS /
DEFAULT SETTINGS
System High Voltage alarm
Security Level {1}
[SYSTEM/SET-ALM]
The output relay energized if the System Voltage
is above the System High Voltage threshold.
Sys HV Alm m+
Minor
System High Voltage
Threshold
Security Level {1}
[SYSTEM/SET-ALM]
System Voltage is bus voltage measured by the
controller. An alarm will be reported if voltage is
higher than the voltage entered.
Sys HV Thr m+
-58.00 V
System Low Temperature
Alarm
Security Level {1}
[SYSTEM/SET-ALM]
The output relay energized if the System
Temperature is below the System Low
Temperature threshold.
Sys LT Alm m+
Minor
System Low Temperature
Threshold
Security Level {1}
[SYSTEM/SET-ALM]
System Temperature is ambient temperature
measured inside the controller. An alarm will be
reported if temperature is lower than the
temperature entered.
Sys LT Thr m+
0.0 C
System Low Voltage Alarm
Security Level {1}
[SYSTEM/SET-ALM]
The output relay energized if the System Voltage
is below the System Low Voltage threshold.
Sys LV Alm m+
Minor
System Low Voltage Threshold
Security Level {1}
[SYSTEM/SET-ALM]
System Voltage is bus voltage measured by the
controller. An alarm will be reported if voltage is
lower than the voltage entered.
Sys LV Thr m+
-50.00 V
System Temperature
{Status Only}
[STATUS]
System temperature measured within the control
unit.
Sys Temp +
26.7 C
System Voltage
{Status Only}
[STATUS]
System output voltage measured between the
MX28B DC power plant -48V and return buses.
Sys Voltage +
-54.00 V
Test Major Relay
Security Level {1}
[SYSTEM/DIAG]
Setting this parameter to “ON” de-energizes the
Major Relay and turns on the “MAJ” LED on the
control unit front panel. In normal operation Major
Relay is energized so that when a loss of –48
VDC power occurs, the relay will change state.
Test Maj Rly m+
OFF
Test Minor Relay
Security Level {1}
[SYSTEM/DIAG]
Setting this parameter to “ON” energizes the Minor
Relay and turns on the “MIN” LED on the control
unit front panel.
Test Min Rly m+
OFF
Test Relay 1
Security Level {1}
[SYSTEM/DIAG]
•
•
•
Test Relay 6
Security Level {1}
[SYSTEM/DIAG]
Setting this parameter to “ON” energizes Relay 1
and turns on the “ALM1” LED on the control unit
front panel.
•
•
•
Setting this parameter to “ON” energizes Relay 6
and turns on the “ALM6” LED on the control unit
front panel.
Test Relay 1 m+
OFF
•
•
•
Test Relay 6 m+
OFF
Test Relay Enable
Security Level {1}
[SYSTEM/DIAG]
This parameter must be set to “Enable” to permit
the eight output relays to be manually tested;
otherwise, the state of the relays will be per
system conditions.
Test Relay En m+
Disable