Restrictions For Esr - Siemens SINAMICS S120 Function Manual

Hide thumbs Also See for SINAMICS S120:

Table of Contents

To configure the response for generator operation, proceed as follows:

1. Set the generator operation of the drive with the parameter setting p0888 = 3.

2. Parameterize the V

3. Activate the monitoring of the DC-link voltage for the generator operation with the parameter

setting p1240 = 2.

4. Set the permissible lower voltage limit V

The infeed unit detects when the power fails as the DC-link voltage drops and this is then

signaled as an alarm.

Restrictions for ESR

● Operating several axes in the generator mode

Only use one speed-controlled axis to buffer the DC link. If you have parameterized several

axes, faults can occur, which undesirably influence one another and therefore the drive line-

up as a whole.

● Motors that are not suitable for generator operation

Linear motors (1FN) and torque motors (1FW) require an adequately high DC-link voltage

to brake. They are not suitable to buffer the DC link when operating in the generator mode.

● ESR and Safety Integrated

If the Safety Integrated Extended Functions are controlled via PROFIsafe, in the case of a

communication failure, Safety Integrated only permits a response time (p9580/p9380) of

maximum 800 ms. After this time expires, Safety Integrated requests pulse suppression.

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

DC-link voltage setpoint

9.11 Extended stop and retract

of the DC link via parameter p1248.

Function modules