NORD Drivesystems BU0590 - Manual (Page 24)

PROFINET bus module for NORD frequency inverters SK 5xxE
24 Subject to technical amendments BU 0590 GB-0312
4.1.6 Example for switching the frequency inverter on and off
In this example, a FI will be operated with a setpoint (setpoint frequency) and an actual value (actual
frequency). The "Maximum Frequency" is 50Hz.
Parameter settings:
 P105 = 500
 P543 = 1
 P546 = 1
Control
word Setpoint 1 Status word Actual
value 1
Explanation
- - - - - - 0000h 0000h
- - - - - - xx40h 0000h The mains voltage is switched on at the FI
047Eh 0000h xx31h 0000h FI is set to "Standby" status
047Fh
2000h xx37h 2000h
FI is set to "Operation enabled" status and controlled with a
50% setpoint.
The FI is enabled, the motor is supplied with current and rotates with a frequency of 25Hz.
0047Eh
2000h xx31h 0000h
FI is set to "Standby" status, the motor runs up its
parameterised ramp to speed 0 and is switched off.
The FI is disabled again and the motor is without current.
047Fh
1000h xx37h 1000h
FI is set to "Operation enabled" status and controlled with a
25% setpoint.
The FI is enabled, the motor is supplied with current and rotates with a frequency of 12.5Hz.
Table 18 Example of setpoint specification
4.1.7 Timeout monitoring
The PROFINET data traffic can be monitored with a watchdog with the aid of the time set in parameter
P513. If no further cyclical data is sent from the PROFINET IO controller, a module error is detected and set
in the FI (E10.3).
Monitoring via the FI parameter P513 is also possible. This is triggered if the process data contact is
interrupted or the process data is transferred with an invalid control word (Bit10 in control word = 0). This
function is activated when the first valid process data telegram is received.