Siemens SINAMICS S110 - F07430 Drive: Changeover to open-loop torque controlled operation not possible; F07431 Drive: Changeover to encoderless operation not possible; F07432 Drive: Motor without overvoltage protection; F07433 Drive: Closed-loop control with encoder is not possible as the encoder has not been unparked

List of faults and alarms
Faults and alarms
3-1071
© Siemens AG 2012 All Rights Reserved
SINAMICS S110 List Manual (LH7), 06/2012, 6SL3097-4AP10-0BP3
F07430 Drive: Changeover to open-loop torque controlled operation not possible
Message value: -
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
Reaction: OFF2 (NONE, OFF1, OFF3)
Acknowledge: IMMEDIATELY
Cause: For encoderless operation, the converter cannot change over to closed-loop torque-controlled operation (BI: p1501).
Remedy: Do not attempt to cover over to closed-loop torque-controlled operation.
F07431 Drive: Changeover to encoderless operation not possible
Message value: -
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
Reaction: OFF2 (OFF1)
Acknowledge: IMMEDIATELY
Cause: For closed-loop torque control, the converter cannot change over to encoderless operation (p1404).
Remedy: Do not attempt to change over to encoderless operation.
F07432 Drive: Motor without overvoltage protection
Message value: %1
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
Reaction: OFF2 (OFF1)
Acknowledge: IMMEDIATELY
Cause: In the case of a fault at maximum speed, the motor can generate an overvoltage that can destroy the drive system.
Fault value (r0949, interpret hexadecimal):
Associated Drive Data Set (DDS).
Remedy: Overvoltage protection can be implemented in the following ways:
- limit the maximum speed (p1082) without any additional protection.
The maximum speed without protection is calculated as follows:
Rotary synchronous motors: p1082 [rpm] <= 11.695 * p0297/p0316 [Nm/A]
Linear motors: p1082 [m/min] <= 73.484 * p0297/p0316 [N/A]
Rotary synchronous motors connected to a high-frequency converter: p1082 [rpm] <= 4.33165 * (-p0316 + square
root(p0316^2 + 4.86E-9 * (p0297 * r0313)^2 * (r0377 - r0233) [mH] * r0234 [µF]) / (p0297 * r0313^2 * (r0377 - r0233)
[mH] * r0234 [µF])
Linear motor connected to a high-frequency converter: p1082 [m/min] <= 0.6894 * (-p0316 + square root( p0316^2
+ 1.91865E-7 * (p0297 * r0313 * 3.1415)^2 * (r0377 - r0233) [mH] * r0234 [µF]) / (p0297 * r0313^2 * (r0377 - r0233)
[mH] * r0234 [µF])
Rotary induction motor connected to a high-frequency converter: p1082 [rpm] <= Maximum (2.11383E5 / (r313 *
square root((r0377 [mH] + r0382 [mH]) * r0234 [µF])) ; 0.6364*p0297*p0311[rpm] / p0304)
- use a voltage protection module (VPM) in conjunction with the function "Safe Torque Off" (p9601, p9801) (only for
synchronous motors).
When using a synchronous motor with VPM connected to a high-frequency converter, the following must apply:
p1082 [rpm] <= p0348 * (r0377 + p0233) / p0233
When a fault condition exists, the VPM short-circuits the motors. During the short-circuit, the pulses must be sup-
pressed - this means that the terminals for the function "Safe Torque Off" (STO) must be connected to the VPM.
When using a VPM, p0643 must be set to 1.
- activating the internal voltage protection (IVP) with p1231 = 3 (only for synchronous motors).
See also: p0643 (Overvoltage protection for synchronous motors), p1231 (Armature short-circuit / DC braking con-
figuration)
F07433 Drive: Closed-loop control with encoder is not possible as the encoder has not been
unparked
Message value: %1
Drive object: SERVO_S110-CAN, SERVO_S110-DP, SERVO_S110-PN
Reaction: NONE (OFF1, OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The changeover to closed-loop control with encoder is not possible as the encoder has not been unparked.
Remedy: - check whether the encoder firmware supports the "parking" function (r0481.6 = 1).
- upgrade the firmware.