Manual

27
Alarm Conditions
All of the Alarm Conditions, when active, toggle back and forth between the two message states below.
Short Circuit Alarm
D1 Short
D2 A=0.500
Hold Opt to Clr
D2 A=0.500
• 2.0 Amp Trigger
• Shuts o and disables daughter board indenitely.
• Motherboard LCD toggles alarm and instruction on how to re-enable
the daughter board.
• Aected daughter board’s alarm LED blinks on and o.
Thermal Alarm
D1 Thermal
D2 A=0.500
Hold Opt to Clr
D2 A=0.500
• Shuts o and disables daughter board indenitely.
• Motherboard LCD toggles alarm and instruction on how to re-enable
the daughter board.
• Aected daughter board’s alarm LED blinks on and o.
High Current Alarm
D1 High Amp
D2 A=0.500
D1 A=1.100
D2 A=0.500
• Triggered when individual daughter board’s load current is above 1.0 Amps
for a minimum 10 seconds.
• 10 second timer is reset when below 1.0Amps.
• Does NOT shut o or disable daughter board.
• Motherboard LCD toggles alarm message and load current.
• Aected daughter board’s alarm LED blinks on and o.
Phase Current
Imbalance Alarm
D1L1 High Amp
D2 A=0.500
D1L1 A=0.750
D2 A=0.500
• Triggered when load current of one wire is 2x higher than the opposite wire
for a minimum 20 seconds.
• 20 second timer is reset when load current of one wire is no longer 2x higher.
• Does NOT shut o or disable daughter board.
• Motherboard LCD toggles alarm message and load current.
• Aected daughter board’s alarm LED blinks on and o.
The display difference between the High Current Alarm and Phase Current Imbalance Alarm is subtle: Notice the
two-character difference in the display on the first line:
“D1” (High Current Alarm) vs. “D1L1” (Phase Imbalance).
Clear Alarms
To clear an alarm condition, simply hold down the Option button on the motherboard for three seconds.