Siemens A07918 fault code meaning
Siemens / A07918
Series: G120-CU250S-2
Select/activate AC setting encoder operation
converter
Meaning: For separately excited synchronous motors only (p0300 = 5): The current open-loop/closed-loop control mode is I/f open-loop control with a fixed current (p1300 = 18). The speed reference is supplied by the setpoint channel; the current reference is supplied by the minimum current (p1620). Note that the dynamic response of the control loop is significantly limited in this mode. A longer start time must therefore be set for the speed reference than for normal operation.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1420
Series: G130-G150, S120-S150
Select/activate AC setting encoder operation
converter
Meaning: For separately excited synchronous motors only (p0300 = 5): The current open-loop/closed-loop control mode is I/f open-loop control with a fixed current (p1300 = 18). The speed is specified by the reference channel; the current is specified by the minimum current (p1620). Note that the dynamic response of the control loop is significantly limited in this mode. A longer start time must therefore be set for the reference speed than in normal operation. See also: p1620 (Minimum stator current).
Possible causes
Source: SINAMICS G130_G150 P1671; SINAMICS S120_S150 P2824
Series: S110
Select/activate AC setting encoder operation
servo drive
Meaning: For separately excited synchronous motors only (p0300 = 5): The current open-loop/closed-loop control mode is I/f open-loop control with a fixed current (p1300 = 18). The speed reference is supplied by the setpoint channel; the current reference is supplied by the minimum current (p1620). Note that the dynamic response of the control loop is significantly limited in this mode. A longer start time must therefore be set for the speed reference than for normal operation.
Possible causes
Source: SINAMICS S110 P1054