Restrictions For Esr; Profidrive Telegram For Esr - Siemens SINAMICS S120 Function Manual

Function modules
8.11 Extended stop and retract
8.11.5

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.
8.11.6

PROFIdrive telegram for ESR

A cyclic bit for CU_STW1 is present in PROFIdrive DO telegrams 390, 391, 392, 393, 394,
395 and 396 to monitor the ESR state.
Table 8- 10
Signal
CU_STW1.2
Cyclic bits for STW1 and MELDW are present in the telegrams.
Table 8- 11
Signal
STW1.9
Table 8- 12
Signal
MELDW.2
MELDW.4
MELDW.9
540
CU_STW1
Meaning
ESR trigger
STW1
Meaning
1 = Enable ESR response
MELDW
Meaning
1 = |n_act| < speed threshold value 3 (p2161)
1 = Vdc_min controller active (V
1 = ESR response initiated / generator operation active
<p1248)
dc
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Interconnection
parameters
p0890.9 = r2090.2
Interconnection
parameters
p0889 = r2090.9
Interconnection
parameters
p2082[2] = r2199.0
p2082[4] = r0056.15
p2082[9] = r0887.12
Drive functions