NORD Drivesystems BU0040 - Manual (Page 49)

3 ControlBoxes – SK POT1-1
BU 0040 GB-0113 Subject to technical alterations 49
The setpoint value from the Simple Setpoint Box is only processed as a master setpoint. However, as usual,
setpoints from other sources can be taken into account in the form of auxiliary setpoints (e.g. frequency addition).
ATTENTION The drive unit does not stop automatically
If the SK SSX-3A is disconnected from an enabled frequency inverter, the drive will continue to run. In order to
stop the drive, the SK SSX-3A must be reconnected to the frequency inverter.
The parameter (P513) "Telegram timeout" can be set in order to monitor communication.
Information Timeout monitoring (P513)
With the use of the timeout function (P513) settings >{6s} should be avoided. Otherwise, if only the actual value
channel (Terminal C1 to Terminal 1) is interrupted, monitoring does not function.
Interruption of communication
An interruption of communication (disconnection of the plug, individual cables) has various effects on the frequency
inverter and the Simple Setpoint Box.
Disconnection of the actual value channel (Connection Terminal C1 (SK SSX-3A) to Terminal 1 (SK 2xxE))
The error E009 appears in the box display after a delay. The frequency inverter does not react and maintains its
operating condition. If the frequency inverter was started with the SK SSX-3A, it must also be stopped with the
SK SSX-3A. As an alternative, it is also possible to stop it with the SimpleBox (SK CSX-3x), NORD CON or the
ParameterBox in ControlBox mode.
The parameter (P513) "Telegram timeout" provides an optional monitoring of communication on the inverter side. If
the communication cannot be restored after interruption within the time set (max. 6 sec) the drive is stopped with
the error message E010 (10.0).
If the data connection is restored, the SK SSX-3A starts a scan process and switches online again immediately
after this is completed. The error messages are no longer displayed.
Disconnection of the setpoint value channel (Connection Terminal B1 (SK SSX-3A) to Terminal 21 (SK 2xxE))
The error E009 appears in the box display after a delay. The frequency inverter does not react and maintains its
operating condition. If the frequency inverter was started with the SK SSX-3A, it must also be stopped with the
SK SSX-3A. As an alternative, it is also possible to stop it with the SimpleBox (SK CSX-3x), NORD CON or the
ParameterBox in ControlBox mode.
The parameter (P513) "Telegram timeout" provides an optional monitoring of communication on the inverter side. If
the communication cannot be restored after interruption within the time set (max. 6 sec) the drive is stopped with
the error message E010 (10.0).
If the data connection is restored, the SK SK SSX-3A starts a scan process and switches online again immediately
after this is completed. The error messages are no longer displayed.
Loss of supply voltage
Except for the fact that the Simple Setpoint Box switches off without an error message, the box and the frequency
inverter behave identically with regard to the behaviour described above under "Disconnection of the setpoint
channel".