TP-6461 1/08 25Section 2 Controller Troubleshooting
Event Description The Controller Has Detected the Following Condition
Inhibit Transfer Remote input assigned to inhibit transfer function is active (contact closed). Prevents transfer for
maintenance or service.
Remote Test External signal (contact closure) connected to a programmable input assigned to remote test. Signals the
transfer switch to start a test sequence.
Low Battery Voltage External battery (connected to the EBSM) voltage is low.
Remote Common Alarm One or more conditions assigned to the common alram is active.
Bypass Contactor Dis Bypass/Isolation switches only.
3 Src System Disable A 3-Source System Disable input signal is active.
Over Frequency Source frequency is above the over frequency dropout setting.
Under Frequency Source frequency is below the under frequency dropout setting.
Phase Loss One or more phases not detected.
Phase Rotation Error Source ABC or BAC rotation does not match system setting.
Over Voltage L1--L2 Source voltage across L1 and L2 is above the over voltage dropout setting.
Over Voltage L2--L3 Source voltage across L2 and L3 is above the over voltage dropout setting.
Over Voltage L3--L1 Source voltage across L3 and L1 is above the over voltage dropout setting.
Under Voltage L1--L2 Source voltage across L1 and L2 is below the undervoltage dropout setting.
Under Voltage L2--L3 Source voltage across L2 and L3 is below the undervoltage dropout setting.
Under Voltage L3--L1 Source voltage across L3 and L1 is below the undervoltage dropout setting.
Voltage Imbalance Source voltage imbalance detected.
Save History To File Event history saved to a file.
Auto Loaded Test End The auto load test sequence timer has expired, ending the test sequence.
Test Loaded Changed The remote test loaded/unloaded setting was changed.
Pref Source Changed The preferred source selection has been changed (optional accessory).
Reload Dflt Params The system has been reset to the factory default settings (see Reset Data screen)
MODBUS Peak Shave A peak shave command has been received through Monitor III or other Modbus application.
MODBUS Forced to OFF A Transfer to OFF command has been received through Monitor III or other Modbus application.
MODBUS System Test A Test command has been received through Monitor III or other Modbus application.
Battery Control Out Battery control command turns off the battery 20 seconds after power is lost to preserve the controller’s
battery.
USB Connected A device has been connected to the controller’s USB port.
USB Disconnected A device has been disconnected from the controller’s USB port.
Figure 2-2 Event History Messages
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