NORD Drivesystems BU0040 - Manual (Page 20)

NORDAC Control and Parameter Boxes
20 Subject to technical alterations BU 0040 GB-0113
P1
P2
P1
P2
P1
P2
P1
P2
2.2 Functions of the Parameter Boxes
2.2.1 SimpleBox / ControlBox
2.2.1.1 Display
After connection/installation of the Box and switching on the mains voltage (or the 24V DC
control voltage) of the frequency inverter, communication
between the frequency inverter and the Box commences
automatically.
After brief illumination of all he display segments and diodes of the box a
bus scan is carried out while the middle bars of the display (4-digit, 7-
segment display) may flash rapidly.
If the bus scan is completed successfully, the frequency inverter power
appears briefly in the display (e.g.: 0.37 = 0.37 KW). This step is skipped if
the Box is connected to a frequency inverter which is already in operation.
The horizontal bars which then appear in the display indicate that the
frequency inverter is ready for operation.
If a jog frequency value is pre-set in parameter P113, or a minimum
frequency is pre-set in P104, the display flashes with this initial value.
If the frequency inverter is enabled, the display changes automatically to the operating value selected in param eter
>Selection Display value< P001 (factory setting = current frequency).
The actual parameter set is shown by the 2 LEDs next to the display on the left in binary code.
After the frequency inverter is switched off, an "OFF" appears briefly in the
display before the display is completely switched off.
"OFF" is also shown in the display if the SimpleBox is operated via an
external 24V control voltage, although the power supply (230V or 400V) is
inactive.
In this state, almost unrestricted parameterisation of the inverter (no measurement of motor resistance or
parameter identification is possible (P208 / P220)) can be carried out as described in the following section.
However, control (enabling) is not possible due to the lack of the power supply.
Information
Setpoint
The digital frequency setpoint is factory set to 0Hz. To check whether the motor is working, a frequency setpoint
must be entered with the or keys or a jog frequency via the respective parameter >Jog frequency< (P113).
WARNING
Danger of injury if motor starts
The motor may start immediately after pressing the START key !