Lenze 931W - Manual (Page 48)

Troubleshooting and fault elimination
Fault elimination for errors / problems with regard to the handling of bus systems
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48 GHB 13.0002-EN 3.1
8.3 Fault elimination for errors / problems with regard to the handling of bus systems
In order to be able to search for and eliminate errors and faults with regard to installation
and commissioning moreeasily,thedisplaywindow”Displayfieldbus”underthe”Service”
tab oftheoperating programis provided to you.If youobserve thedrive inthe ”Onlinelevel
1”, you can at the same time observe the control and status word of the drive and read and
communication objects and write to them (see Profibus, CAN bus Manual). Please observe
the access authorisations. If the operating program accesses to the drive within a higher
level (e.g. level service), the bus system is inhibited.
Error Cause Remedy
Communication faults Bus plug not properly attached by snap
mechanism or incorrectly connected
Ensure faultless mounting of the bus
plugs
Missing bus terminating resistors Check the terminating resistors of your
system
Bus address incorrectly set Check the bus addresses of the nodes by
using the software (see Manual)
Baud rate of one or several nodes
incorrectly set
Check the baud rate of the nodes by using
the software (see Manual)
Last node does not log on on the bus
system.
Input and output interchanged. In
addition, terminating resistor activated.
The terminating resistor interrupts the
bus system to the output (X4.2)
Use input (X 4.1) for connecting the bus
system (see Manual)
Nodes after a drive do not log on on the
bus system
Terminating resistor activated in the
wrong place. The terminating resistor
interrupts the bus system to the output
(X4.2)
Deactivate terminating resistor of the
interrupting drive
Voltage error when connecting the supply
voltage
First the control voltage (24V), and
afterwards the power voltage (24, 42, 230
or 320 V) has been connected
Observe switch-on sequence. First power
(the control is supplied automatically at
the same time). Afterwards connect the
control voltage
Travel data set not executable Settings in transmitted travel data set not
conflict-free
Check of the settings in the travel data set
Check of the software limit switch
(”System” tab) (use software limit switch
for positioning only)!
Check on whether the positioning target is
beyond the software limit switches
Drive cannot be activated via the bus Access error. Bus system has no access to
the node
Check access of the ”Fluxx” operating
software to the drive (access max. online
level 1 for bus access!!!)
Drive can be started via the control word,
but does not accept any setpoints
Bus system does not have parameter
change rights (see ”Bus system” Manual)
Request parameter change rights via bus
system
Quick stop has been actuated via ”Fluxx”
software
The parameter change rights have to be
dispensed by the ”Fluxx”. Request
parameter change rights via bus system
again afterwards