F043 Emf Too High For Braking Operation; F044 A Slave Connected To The Paralleling Interface Is Not Operating; F046 Analog Select Input For Main Setpoint (Terminals 4 And 5) Faulty; F047 Analog Select Input 1 (Terminals 6 And 7) Is Faulty - Siemens 6RA70 Series Instructions Manual

Fault
No.
Cause as a function of fault value
(r047.001, r949.001 or r949.009 with acknowledged error)
F043 EMF too high for braking operation
(active in operating states of – –, I, II)
This fault message is activated if the following 5 conditions are fulfilled when a torque direction reversal is requested (selection of
MI or MII):
♦ P272=0 (fault message is parameterized and not alarm + field weakening)
♦ A parameterized, additional, torque-free interval (P160 ≠ 0) has expired
♦ Parallel drive is ready for engagement of the new torque direction
♦ The absolute value of the armature current (K0118) requested in the new torque direction is >0.5% of P072
♦ The calculated firing angle (K0101) for the armature current requested for the new torque direction is >165 degrees.
Possible fault causes
♦ No "speed-dependent field weakening" (P081=0) is parameterized even though operation in the field weakening range is
needed for the requested maximum speed
Note:
In motor operation, it is possible to reach EMF values corresponding to the peak of the phase-to-phase supply voltage at a
firing angle of α G =30° (rectifier stability limit P150) and low armature currents.
♦ Setpoint EMF for field weakening operation too high (parameter P101 is set too high)
♦ Supply voltage dip
♦ EMF controller or field current controller is not optimized, possibly resulting in excessive EMF on power-up.
Fault value:
Calculated firing angle (armature) before limitation (K0101)
F044 A slave connected to the paralleling interface is not operating
(active when U800 = 1 or 2 and U806>10 (master) after receipt of the first valid protocol in operating states – –, I, II)
Fault value:
1 A fault message is active on a slave
2 A slave is not in operation (e.g. because its enable input is set to "0")
F046 Analog select input for main setpoint (terminals 4 and 5) faulty
(active in operating states of ≤ o6)
This fault message is activated when P700=2 (current input 4 to 20 mA) and an input current of less than 2mA is flowing.
Possible fault causes
♦ Open circuit in supply cable
♦ P700 is incorrectly set
F047 Analog select input 1 (terminals 6 and 7) is faulty
(active in operating states of ≤ o6)
This fault message is activated when P710=2 (current input 4 to 20 mA) and an input current of less than 2mA is flowing.
Possible fault causes
♦ Open circuit in supply cable
♦ P710 is incorrectly set
Siemens Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
Description
Further information (r047.002 to r047.016)
r047 Index 002 to 016:
i002 Instantaneously measured actual EMF (K0287)
i003 Armature current controller setpoint (K0118)
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