NORD Drivesystems BU0135 - Manual (Page 69)

5 Parameterisation
BU 0135 GB-2713 Pre-series version 69
5.1.5 Additional parameters
Parameter
{ Factory setting }
Setting value / Description / Note READ RAM
READ /
FLASH
FLASH
P523
Factory setting
(Factory setting)
x
0 ... 1
{ 0 }
By selecting the appropriate value and confirming it with the OK key, the parameterisation is
entered in the factory setting. Once the setting has been made, the value of the parameter
automatically returns to 0. The setting is only remains permanently valid if parameter P550 =1 is
set (transfer of the values from the RAM to the flash memory)
0 = No change: Does not change the parameterisation.
1 = Load factory setting: The complete parameterisation of the motor starter reverts
to the factory setting.
P535
I
2
t-motor
(I
2
t-motor)
x
0 ... 2
{ 1 }
The I
2
t motor shut-down class determines how quickly the motor starter switches off in case of
excess current. The motor shut-down classes are oriented to curves which are defined in EN
60947-4-2. Three different classes can be selected. The rated motor current on which the I
2
t
monitoring is based is determined by P203. Above 7.2 x the rated motor current, switch-off is
practically instantaneous.
0 = Class 10A, 1.5 x overcurrent for 120sec
1 = Class 10, 1.5 x overcurrent for 240sec
2 = Class 20, 1.5 x overcurrent for 360sec
ATTENTION
The motor I2t circuit breaker cannot replace protection with an external fuse against short circuit
or a short to earth!