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

7.11.5

Restrictions for ESR

● Operating several axes in the generator mode
● Motors that are not suitable for generator operation
● ESR and Safety Integrated
7.11.6

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 7- 10
Signal
CU_STW1.2
Cyclic bits for STW1 and MELDW are present in the telegrams.
Table 7- 11
Signal
STW1.9
Table 7- 12
Signal
MELDW.2
MELDW.4
MELDW.9
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
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.
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.
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.
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
7.11 Extended stop and retract
<p1248)
dc
Function modules
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
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