Troubleshooting - ABB Zenith ZTG 30 Operation, Maintenance And Installation Manual

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6. Troubleshooting

Warning
Any troubleshooting should be conducted by
trained and authorized personnel only.
Appropriate personal protectiveequipment
(PPE) shall be used when troubleshooting the
ATS panel.
Hazardous voltage may be present. Discon-
nect all power sources before performing
work inside the ATS panel.
Failure to do so may result in serious injury
or death.
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6.1 Alarms
Message
Locked, Alarm LED on
Switch not in AUTO
mode, Alarm LED on
Phases crossed
S1 undervoltage
S1 overvoltage
S1 phase missing
S1 unbalance
S1 phase rotation
S1 invalid frequency
set in parameters "Drop-out frequency,
S2 undervoltage
Table 6.1 Alarms-list in level 3 and 4, LCD and touch control interfaces
Lock input activated
Slide switch is in handle
or lock position
Phase rotation of sources 1
and 2 are different
Voltage of source 1 is under the
threshold level set in parameter
"Dropout voltage, lower threshold"
Voltage of source 1 is over the
threshold level set in parameter
"Dropout voltage, upper threshold"
One or two phases of
source 1 are missing
Phases of source 1 are not symmetric
Phase rotation of source 1 is
different from the value of
parameter "Phase sequence"
Frequency of source 1 is out of range
upper threshold" and "Drop-out
frequency, lower threshold"
Voltage of source 2 is under the
threshold level set in parameter
"Dropout voltage, lower threshold"
LCD
Fault
Turn slide switch into
Connect the phases of both sources in
Check the correlation between power
source and device configuration
Check the correlation between power
source and device configuration
Check the power source
Check the power source
Connect the phases according to the
Check the correlation between power
source and device configuration
Check the correlation between power
source and device configuration
83
Touch
Action
Unlock
the AUTO position
the same order
and connections
configuration