GE Industrial Solutions ASTAT BP - Manual (Page 27)

ASTAT BP User Manual
27 GE Industrial Solutions ©2013 GE Company All Rights Reserved
Function &
Default
Range Unit Description
O/C JAM Fault
200% of Im
100-300 % of
Motor
Current
Sets O/C JAM Fault protection.
Operational when ASTAT-BP is energized and has three trip
functions:
At all time - If I > 850% of Starter Current it trips the
ASTAT-BP within 1 cycle (overrides the value of the O/C JAM
Fault setting).
O/C JAM Delay
0.5 Sec.
0.0 – 5 sec. At starting process - If I > 850% of Motor Current it trips
the ASTAT-BP after O/C JAM Delay
At run time - If I > O/C JAM Fault setting of Motor
Current it trips the ASTAT-BP after O/C JAM Delay.
Caution:
The O/C JAM Fault is not intended to replace the fast
acting fuses, required to protect the thyristors. Refer to
section 8.5 on page 63.
Overload Class
IEC CLASS 10
IEC CLASS 10;
IEC CLASS 20;
NEMA CLASS
10;
NEMA CLASS
20;
NEMA CLASS
30;
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-BP 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 2.4 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.
Overload Protect
Enabled
Enable after
EOR;
Enabled;
Disabled;
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!!
Undervoltage FLT
75%
50-90 % of
mains
voltage
Sets Undervoltage Fault level.
Trips the ASTAT-BP when mains voltage drops below the level
that was set for a time longer than Undervoltage DLY.
Undervoltage DLY
5 SEC.
1 –10 sec. Sets Undervoltage Fault delay 16
16
Becomes operational only after the start signal.
When voltage drops to zero (voltage outage) the ASTAT-BP will trip immediately, thus overriding the delay.