Beckhoff EP7402-0057, Руководство пользователя

Страница: 41 / 63

Troubleshooting
EP7402-0057 41 Version: 1.3
5 Troubleshooting
The following table shows a selection of possible problems and solutions.
Problem Possible reasons Possible solutions
The motor is not turning. The motor channel was blocked
due to a fault.
1. Check whether a diagnostic
bit [ } 42] reports an error.
2. Set "Enable" to 0.
3. Eliminate the error.
4. Acknowledge the error. See
chapter Acknowledging errors
[
}
44] .
The motor channel is disabled. Set the variable "Enable" of the
corresponding motor channel to
TRUE.
The variable "Velocity" is smaller
than the parameter "Start
velocity". Increase "Velocity" or decrease
parameter 80n00:09
hex
"Start
velocity".
The motor does not react to
changes in the output variable
"Velocity".
It rotates at a constant speed. The speed controller is disabled
because the proportional
component is zero. Set the parameter 80n3:12
hex
"Velocity loop proportional gain" to
a value greater than zero.
Unexplained failure of
EP7402-0057 or other device
powered from the same supply
voltage. Overvoltages on the supply
voltage U
P
, caused by energy
recovery, e.g. in the following
events:
• Braking operations
• Manual movement of objects
on the conveyor roller
Use a brake chopper to prevent
overvoltages on the supply
voltage U
P
.