GE ASTAT XT QT 0008U Series User Manual page 28

Function &
Default
Overload Class
IEC CLASS 10
Overload Protect
Enabled
Undervoltage FLT
300 Volt
Undervoltage DLY
5 SEC.
Overvoltage FLT
480 Volt
Overvoltage DLY
2 SEC.
Store Settings
Main Settings
Becomes operational only after the start signal.
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When voltage drops to zero (voltage outage) the ASTAT-XT will trip immediately, thus overriding the delay.
Becomes operational only after the start signal.
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Pressing the Set key when the Store Settings Xxxxx Settings message does not appear on the display has no
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effect.
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Range Unit
IEC CLASS 10;
IEC CLASS 20;
NEMA CLASS
10;
NEMA CLASS
20;
NEMA CLASS
30;
Enable after
EOR;
Enabled;
Disabled;
120-600 V
1 –10 sec.
250-750 V
1 –10 sec.
• Control Keypad
Sets Overload CLASS.
Overload Class is operational as programmed in the
Overload Protect parameter. (see next parameter)
The O/L circuitry incorporates a thermal memory register
that calculates heating minus dissipation of the motor. The
ASTAT-XT trips when the register fills up.
The time constant for cool down after overload trip is:
For IEC/NEMA Class 10 – 320seconds
For IEC/NEMA Class 20 – 640seconds
For NEMA Class 30 – 960seconds
Refer to section 2.3 on page 10 for thermal characteristic.
Note:
When setting Motor Current to a higher level than
Starter Current, Overload Class parameter is
automatically set to NEMA Class 10.
Sets Overload Protection operation.
Enable after (End Of Ramp) will set the overload
protection to be operative after starting process is completed
and (End Of Ramp) relay is energized.
Enabled will set the overload protection to be operative at
all time.
Disabled will set the overload protection not to be
operative at all time.
ATTENTION!
When Overload Protect is set to Disabled the motor
is not protected for Overload!!
Sets Undervoltage Fault level.
Trips the ASTAT-XT when mains voltage drops below the level
that was set for a time longer than Undervoltage DLY.
Sets Undervoltage Fault delay
Sets Overvoltage Fault level.
Trips the ASTAT-XT when mains voltage increases above the
level that was set for a time longer than Overvoltage
DLY. Can not be set lower than the Undervoltage FLT
setting.
Sets Overvoltage Fault delay.
Storing modified parameters
To store selected parameters scroll through all parameters
until you reach Store Settings Main Settings, then
press the Set key.
After you store a parameter successfully the Data Saved
OK message will display.
If ASTAT-XT fails to store the parameter the LCD Will display
the Storage Error message (refer to section 7 on page
59 for more details).
Description
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