Parameter descriptions
The value of parameter Stator inductance 384 refers to the quantity between two motor phases and
can typically be taken from the data sheet of the motor.
No. Description Min. Max. Fact. sett.
384 Stator inductance 0.1 mH 500.0 mH 1.0 mH
1192 Peak current (synchronous motor)
The parameter
Peak current 1192 is used during commissioning of the motor to set the limit for the
reference Isq value in the frequency inverter. This is to protect the connected synchronous motor.
The value can be taken from the motor rating plate or the motor data sheet. Exceeding the value
specified by the manufacturer may result in motor damage.
â‹…
I
FIN
: Nominal value of frequency inverter
o
c
: Overload capacity of frequency inverter.
7.2.3 Device test
For easier troubleshooting in the device or in a plant, the internal and externally connected hardware
can be tested. Errors in the frequency inverter, external sensors, the load (motor) and electrical con-
nections will be identified.
In order to be able to test individual components separately, the device test is split up in individual
tests which can be activated separately.
7.2.3.1 Earth fault and short circuit test (Test 1)
WARNING
Synchronous motors may move briefly
while the test is performed. It must be checked if
there is a potential risk of personal injury or material damage. If necessary, access to
hazard areas must be safely prevented.
If a synchronous motor is connected: The test must not be started while the synchronous motor runs.
Test 1 checks if there is an earth fault or a short-circuit against DC-link potential in the load (motor)
or in the frequency inverter. This test can be carried out with or without load.
In this test, all six IGBTs (transistors) will be switched on briefly individually. No current may flow in
this process even if the load is connected.
117
Machine data 06/2013 Operating Instructions
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