REFUdrive 500 RD51
Troubleshooting
7-7
DOK-RD500*-RD51*******-IB01-EN-P
No.
Designation
Message
Cause
Remedy / Comment
Only for the option W brake resistor:
•
The brake resistor which is being used has an
excessive ohmic value.
•
A brake resistor has not been connected.
•
The connected brake resistor is too low for the
energy which is fed-back into the DC link when
braking.
Cause in the parameterization:
•
The down-ramp was set too fast.
•
Incorrect brake resistor selected.
•
Only for an external programmable braking
resistor: The values for the resistance, continuous
output and/or thermal time constant incorrectly
parameterized
•
Check the break resistor.
•
Check the down-ramp in P0280.0X.
•
In P0038 check whether the correct brake resistor
was selected. Information regarding REFU
Standard: Every drive converter output class is
assigned a specific brake resistor.
•
Check the values in P0623 to P0625.
Maintain the max. braking duration and the required
no-load times to the next braking operation. The load
diagram in the instructions for the brake resistor option
can be used to calculate the braking- and no-load
times.
32
Overcurrent
Fault
Current limiting is active for a time which is longer
than that parameterized.
Check the setting of P0574!
The time duration of the uninterrupted current limiting
(D1678 = 1) can be set between 1 second and 100
seconds in 11 steps, using P0574.
If current limiting is interrupted before the
parameterized time has expired (D1678 = 0), the time
counter is reset to 0 and then restarts at the next
current limiting.
if P0574 has been set to 0 (= continuous), then the
"overcurrent" fault is output.
34
Safety OFF (NAMUR)
Alarm / Fault
The "safety shutdown" fault message has been
introduced, so that drive converter fulfills the NAMUR
standard (NAMUR is a standard committee for
instrumentation and control in the chemical industry).
It is only activated when P0057 is set to 1. The fault or
alarm is selected using P0571.
The fault is initiated using an external control signal,
which is connected to the digital input of the drive
converter.
The D parameter of the digital input is interconnected
in P0050.1.
The external control signal is used to positively
disconnect the drive from the line supply
(1 = operation; 0 = disconnected from the line supply).
35
Motor overload
Alarm / Fault
The electronic overload relay has responded (refer to
the function diagram "modulation, measured value
sensing" or in the Instruction Manual, Section 5 of the
basis programming "Thermal motor protection").
Check P0566 "Overload protection threshold" to ensure
that it has been correctly set.
The type of response of the electronic overload relay
can be set using P0565: disabled / alarm / fault.
39
Start protection On
Fault
This message only occurs when the start inhibit
option is being used.
Sizes A to E: Contacts X80.1 and 2 were opened
during operation, or an on command was output with
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
