NORD Drivesystems BU0700 - Manual (Page 37)

3.1 Technology unit
BU 0700 GB-1411 Subject to technical alterations 37
3.1.3 PotentiometerBox
(SK TU1-POT, Option)
The PotentiometerBox can be used as a control unit for various functions. Selection can be
carried out in parameter P549.
In the basic setting direct control of the output frequency within the minimum (P104 =0 Hz)
and maximum frequency (P105 = 50 Hz) range is possible.
Note: The frequency inverter can then only be controlled via the PotentiometerBox,
when the parameter >Interface< is programmed for the control terminals or
keyboard (P509 = 0) and if it has not previously been enabled via the control
terminals.
Control (with P549 = 1):
To switch on the frequency inverter, the START key must be pressed. The frequency inverter is now
enabled with the actual potentiometer setting. Any previously set minimum frequency (P104) is the minimum
supplied.
To switch off the frequency inverter, the STOP key must be pressed. The output frequency is reduced by
the brake ramp (P103) until standstill.
Change of rotation direction: When the inverter is enabled, the direction of rotation can be changed by long pressing (approx.
3s) of the START key .
If the frequency inverter has not been enabled, the rotation direction with which the motor should be started can be changed by
a long press of the STOP key .
Frequency setpoint:
A setpoint between the minimum frequency (P104) and the maximum frequency (P105) can be set with the potentiometer.
Error acknowledgement: If an inactive error of the frequency inverter is present (red LED flashing), it can be acknowledged by
pressing the STOP key
LED display:
Red LED
off No error
flashing Inactive error
on Active error
Green LED
off
Frequency inverter switched off, enabled with rotation
direction to the right
flashing 1:
short on, long off Frequency inverter switched off, enabled with rotation
direction to the left
flashing 2:
short on, short off Frequency inverter switched on, with rotation
direction to the left
on
Frequency inverter switched on, with rotation
direction to the right