PDU Fault List

Display Message

Meaning

Corrective Action

 

 

 

System In Maintenance Bypass

The system is in maintenance

No corrective action necessary.

 

bypass: the Q2 switch is open and

 

 

the Q3 switch is closed.

 

Min Output Voltage Alarm

Phase-to-neutral output voltage for

Evaluate the threshold setting. If

 

phase <L-N> has dropped below the

necessary, adjust it for your situation.

 

configured limit.

 

Max Output Voltage Alarm

Phase-to-neutral output voltage

Evaluate the threshold setting. If

 

for phase <L-N> exceeded the

necessary, adjust it for your situation.

 

configured limit.

 

Max Total Output Current Alarm

Current of output phase <n>

Evaluate the threshold setting. If

 

exceeded the configured limit.

necessary, adjust it for your situation.

Min Total Output Current Alarm

Current of output phase <n> dropped

Evaluate the threshold setting. If

 

below the configured limit.

necessary, adjust it for your situation.

Output Frequency Alarm

Frequency of the output current is

Evaluate the threshold setting. If

 

above or below the range that is

necessary, adjust it for your situation.

 

configured as acceptable.

 

Critical Input Contact Fault

A user-configured contact connected

Determine why the alarm has

 

to the system is reporting an alarm

occurred. This is a user-specific

 

condition.

alarm setting.

System Mode Alarm *

The Q1 switch is open, and the

Close the Q1 switch to reconnect the

 

UPS is disconnected from the input

UPS to utility/mains power.

 

voltage.

 

System Mode Alarm *

The Q2 & Q3 switches are open,

For safety reasons, ensure that

 

and the system is not supporting the

the switches were not closed for

 

connected equipment.

maintenance purposes. If the

 

 

switches are open, close Q2 for UPS

 

 

operation, and Q3 for maintenance

 

 

bypass.

System Mode Alarm *

The alarm will be active in the event

Option 1: Resume normal UPS

 

Q3 is on at the same time as Q1 and

operation.

 

Q5.

Option 2: Go to maintenance

 

 

bypass.

 

 

Option 3: Contact Schneider

 

 

Electric Customer Support (see the

 

 

back cover).

Transformer Overheating

The temperature of the transformer

Option 1: Resume normal UPS

 

has exceeded 18 °C.

operation.

 

 

Option 2: Go to maintenance

 

 

bypass.

 

 

Option 3: Contact Schneider

 

 

Electric Customer Support (see the

 

 

back cover).

Cooling Fan Failure Alarm

One fan is not working or not

Option 1: Make sure all four fans

 

spinning fast enough, or one pole

are running.

 

of the 3-pole circuit breaker has

Option 2: Check breaker positions.

 

tripped.

Option 3: Contact Schneider

 

 

Electric Customer Support (see the

 

 

back cover).

* See the Event log for further clarification.

990–3015E-001

Symmetra™ PX48, 96, and 160 kW 400 V 100 kW 208 V Operation

37