9-6
Troubleshooting
REFUspeed RS51
DOK-RD500*-RS51*******-IB02-EN-P
No. Designation
Cause
Message
Remedy / comments
27
Analog input 1: I < 4 mA
Cause external to the drive converter:
Short-circuit or interrupted cable on the setpoint line to
the analog input or to the optional analog inputs (only
for operating mode
4-20 mA or 2-10 V).
Cause in the parameterization:
Erroneous response type
Incorrect operating mode
Alarm / fault
Check the setpoint line.
Check the response type in P0564.0X or P0752.0X.
Check the operating mode in P0201.0x or P0735.0X.
28
Motor overtemperature
The drive converter detects an excessive resistance at
terminals X15.1 and 2.
The motor temperature is too high, temperature sensor
defective, sensor cable defective.
Erroneous parameterization.
Alarm / fault
Replace the sensor or sensor cable.
Check the temperature evaluation parameters (P0385
– P0389) to ensure that they are correctly set.
If a KTY84 has been selected, the actual motor can be
displayed in °C in the monitor using D1872; if a PTC
has been selected, the actual ohmic value can be
displayed using D1871.
30
SR Release?
The control card and the firmware (Flash Eprom) do
not match.
Fault
Please contact your customer service.
31
Brake resistor overload
For the parameterized brake resistor, the drive
converter computes a temperature image. If the brake
resistor is controlled, the drive converter calculates the
assigned temperature. If a threshold is exceeded, the
drive converter signals a brake resistor overload
condition.
Cause external to the drive converter:
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.
An incorrect brake resistor was selected.
Only for an external programmable brake resistor: The
values for the resistance, continuous output and/or
thermal time constant were incorrectly parameterized.
Alarm / fault
Check the brake 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 P06256.
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.
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
