Siemens SINAMICS S210 Operating Instructions Manual page 447

Remedy: Overvoltage protection can be implemented in the following ways:
1. 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 * r0297/p0316 [Nm/A]
Linear motors: p1082 [m/min] <= 73.484 * r0297/p0316 [N/A]
Rotary synchronous motor connected to the high-frequency converter:
p1082 [rpm] <= 4.33165E9 * (-p0316 + root(p0316^2 + 4.86E-9 * (r0297 * r0313)^2 * (r0377 - p0233) [mH] * p0234 [µF]) /
(r0297 * r0313^2 * (r0377 - p0233) [mH] * p0234 [µF])
Linear motor connected to the high-frequency converter:
p1082 [m/min] <= 689.403 * p0315 * (root(p0316^2 * p0315^2 + 0.191865 * r0297^2 * (r0377 - p0233) [mH] * p0234 [µF]) /
(r0297 * (r0377 - p0233) [mH] * p0234 [µF])
Rotary induction motor connected to the high-frequency converter:
p1082 [rpm] <= maximum (2.11383E5 / (r0313 * root((r0377 [mH] + r0382 [mH]) * p0234 [µF])); 0.6364 * r0297 *
p0311[rpm] / p0304)
2. 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 at the 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 suppressed
- 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.
3. Activate the internal voltage protection (p1231 = 3, only for synchronous motors).
In so doing, the following hardware preconditions must be fulfilled:
- the infeed of the group must be capable of energy recovery (Active Line Module, Smart Line Module), and the energy
recovery power of the infeed must not be less than the maximum utilized S1 power of the synchronous motor.
- For Control Unit and infeed, a 24 V power supply other than that for the Motor Module must be used with the voltage
protection activated. The 24 V power supply of this Motor Module must be DC link buffered (e.g. CSM).
- a Braking Module with a correspondingly configured braking resistor must be available at the DC link.
- the synchronous motor must be short-circuit proof.
F07433 Drive: Closed-loop control with encoder is not possible as the encoder has not been unparked
Message value: %1
Drive object: All objects
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.
Note:
For long-stator motors (p3870.0 = 1), the following applies:
The encoder must have completed the unparking procedure (r3875.0 = 1) before a changeover can be made to closed-
loop control with encoder. The encoder is unparked using binector input p3876 = 0/1 signal and remains until a 0 signal
in this state.
F07434 Drive: It is not possible to change the direction of rotation with the pulses enabled
Message value: -
Drive object: All objects
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: A drive data set was selected - with the pulses enabled - which has a different parameterized direction of rotation (p1821).
It is only possible to change the motor direction of rotation using p1821 when the pulses are inhibited.
SINAMICS S210 servo drive system
Operating Instructions, 12/2017, A5E41702836B AA
Faults and alarms
13.2 List of faults and alarms
445