Troubleshooting and fault elimination
26
Teachware i700 - Application case (3-axis) - DOC 20190130 - DE EN 11.2019
EN
3.7.
Connection of external motors
You can connect externally on the teachware different AC motors for temporary demonstrations and
test purposes. The connection is
•
For the motor cable via disassembled Speedtec plug of the built-in MCS motor and separate ex-
tension cable
•
For the encoder cable via disassembled Speedtec plug of the built-in MCS motor and separate
extension cable or directly at the i700 (extra encoder cable required).
Due to the different rated voltage of teachware (1x 230V) and inverter (3x 400/480 V) and further
electrical components the following permitted power should be noted for the connection of external
motor:
•
Maximum consistently rated power of externally connected motor: P
max
= 0.75 kW
•
Total consistently apparent output power of all inverters: S
total
= 1.2 kVA
The inverters are coupled by DC link so that an effective energy exchange can be expected between
the devices.
The maximum permitted motor cable length at the Speedtec plug is 2 m.
4.
Troubleshooting and fault elimination
If faults occur during the operation of the teachware, the table below helps you to identify the caus-
es. Further help on troubleshooting can be found in the Lenze controller, inverter and motor docu-
mentation. If it is not possible to remedy the fault using the measures listed, please contact the Len-
ze aftersales service department (see Repair in chapter 6).
Fault
Possible causes
Remedy
Motor shaft does not turn
Motor holding brake is not released
Check parameters for brake control
Release the motor holding brake on device A
manually via switch S3
Irregular running
Gain of control loops too large
Adjust the gains of the controllers (see doc-
umentation inverter i700)
Vibrations
Insufficiently balanced flywheel
Rebalance
Loose fixing screws
Check and tighten screw connections
Motor too hot (can only be evaluated by
measuring the surface temperature)
Incorrect parameterization of the motor data Adapting motor and encoder parameters in
the inverter i700
5.
Maintenance
teachware is practically maintenance-free, if the prescribed operating conditions are observed.
Please consider on site the national regulations for the regular checks of electrical equipment (e.g.
according to EN 60204, DIN VDE 0113).
Important note!
Due to the closed construction the teachware has a restricted ventilation and cooling sys-
tem. Long operating with high output power can trigger the temperature monitoring of
the devices.
Stop!
An unsuitable detergent can cause stress cracks in the polycarbonate plate.
