NORD Drivesystems BU0750 - Manual (Page 114)

NORDAC SK 750E Manual
114 Subject to technical amendments BU 0750 GB-3311
Parameter Setting value / Description / Note
Parameter
set
Available with option
P538 Mains monitoring Always visible
0 ... 4
[ 3 ] For reliable operation of the inverter the power supply must meet a certain quality. If there is a brief
interruption of a phase or the voltage supply sinks below a particular limit value, the FI will output an
error.
Under certain operating conditions, it may be necessary to suppress this error message. In this
case, the input monitoring can be modified.
0 = Switched off: No monitoring of the supply voltage.
1 = Only phase errors: an error message is only produced by phase errors.
2 = Only low voltage: an error message is only produced by a low voltage.
3 = Phase error and low voltage: Phase errors and low voltage produce error messages.
4 = DC supply: The input voltage is fixed at 480V with direct supply of direct current. Phase error
and low mains voltage monitoring are deactivated.
NOTE:
Operation with an impermissible mains voltage can destroy the frequency inverter!
P539 Output monitoring P Always visible
0 ... 1
[ 0 ] The output current is measured and checked for symmetry. If an asymmetrical load is detected, the
error message E016 >Motor phase error< is output.
0 = Switched off
1 = Switched on
P540 Block rotation direction P Always visible
0 ... 7
[ 0 ] For safety reasons this parameter can be used to prevent a rotation direction reversal and therefore
the incorrect rotation direction.
0 = No rotation direction limitation
1 = Direct key blocked, the direction of rotation key via the VontrolBox (SK TU2-CTR) is blocked.
With this parameter, the direction key in the ParameterBox is not blocked.
2 = Right rotation only*, only a field of rotation to the right is possible. The selection of the
"incorrect" rotation leads to an enable with the minimum frequency (P104) in the "correct"
direction.
Note: When using a PotentiometerBox (SK TU2-POT), function 5 is active here!
3 = Left rotation only*, only a field of rotation to the left is possible. The selection of the
"incorrect" rotation leads to an enable with the minimum frequency (P104) in the "correct"
direction.
Note: When using a PotentiometerBox (SK TU2-POT), function 6 is active here!
4 = Enable direction only, rotation direction is only possible according to the enable signal,
otherwise 0Hz. With "Enable right" only positive speeds are possible, with "Enable left" only
negative speeds are possible.
Note: When using a PotentiometerBox (SK TU2-POT), function 7 is active here!
5 = Right rotation monitored*, only a field of rotation to the right is possible. The selection of the
"incorrect" rotation direction results in the FI switching off.
6 = Left rotation monitored*, only a field of rotation to the left is possible. The selection of the
"incorrect" rotation direction results in the FI switching off.
7 = Only enabled direction monitored, rotation direction is only possible according to the enable
signal, otherwise the FI is switched off.
*) Applies to keyboard (SK TU2-) and control terminal control, in addition, the direction key on the
ControlBox is blocked.