Siemens CU240B-2 - NAMUR Message Word; Data Structure of the Parameter Channel

Advanced commissioning
6.2 Inverter control
Converter with the CU240B-2 and CU240E-2 Control Units
200 Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
6.2.10.3
NAMUR message word
Fault word according to the VIK-NAMUR definition (MELD_NAMUR)
Table 6- 13 Fault word according to the VIK-NAMUR definition and interconnection with parameters
in the inverter
Bit
Significance
P no.
0
1 = Control Unit signals a fault
p2051[5] = r3113
1
1 = line fault: Phase failure or inadmissible voltage
2
1 = DC link overvoltage
3 1 = Power Module fault, e.g. overcurrent or overtemperature
4
1 = inverter overtemperature
5 1 = ground fault/phase fault in the motor cable or in the motor
6
1 = motor overload
7
1 = communication error to the higher-level control system
8
1 = fault in a safety-relevant monitoring channel
10
1 = fault in the internal inverter communication
11
1 = line fault
15
1 = other fault
6.2.10.4
Data structure of the parameter channel
Structure of the parameter channel
The parameter channel consists of four words. 1. and 2nd word transfer the parameter
number and index as well as the type of job (read or write) The 3rd and 4th word contains
the parameter contents. The parameter contents can be 16-bit values (such as baud rate) or
32-bit values (e.g. CO parameters).
Bit 11 in the 1st word is reserved and is always assigned 0.
You can find examples of telegrams at the end of this section.