Function library
Function blocks
9.2.41 Mains failure control (MFAIL)
9-148
L
EDSVS9332S-D11 EN 3.0
9.2.41.2 Mains failure control
Integration of the function block into the signal flow of the controller
As an example, the function block is integrated into the basic configuration C0005 = 1000 (speed
control).
C0988/7
MFAIL--DC--SET
C0989/1
MFAIL--FAULT
MFAIL--RESET
C0982
C0971
C0972
C0978
MFAIL--ADAPT
C988/2
C0973
C0974
C0981
+
--
1
0
C0988/1
C0970
MFAIL--CONST
C988/3
C0980
Vp
Tn
MCRTL--
DCVOLT
C0989/2
MFAIL--THRESHOLD
C0975
C0988/4
MFAIL--NACT
C0976
C0988/5
MFAIL--SET
C0977
C0988/6
CTRL
MFAIL--I--RESET
MFAIL--NOUT
MFAIL--STATUS
MFAIL
+
--
MFAIL--N-- SET
C0983
FIXED0%
C1472/19
C0472/18
NSET--NOUT
CMP2--OUT
DIGIN5
MCTRL--NACT
MCTRL--N--SET
MCTRL--I--LOAD
FIXED100%
MCTRL--NACT
9300kur024
Fig. 9-102 Link for the basic configuration C0005 = 1000
1. Create speed setpoint channel
• C0970 = 5050 (NSET-NOUT to MFAIL-N-SET)
• C0890 = 6100 (MFAIL-NOUT to MCTRL-N-SET)
2. Start value selection (here: act. speed value) • C0977 = 6100 (MFAIL-NOUT to MFAIL-SET)
3. Selection of setpoint source for DC-bus voltage (here: by
the freely connectable code FCODE C0472/19)
• C0978 = 19539 (C0472/19 to MFAIL-DC-SET)
4. Selection of source which activates the mains failure
control
• see chapter 9.2.41.1
5. Adaptation of proportional gain and DC-bus voltage
controller
• C0974 = 1006 (FIXED100% to MFAIL-CONST)
• C0973 = 1000 (FIXED0% to MFAIL-ADAPT)
6. Achieve restart protection • C0976 = 6100 (MFAIL-NACT auf MCTRL-NACT)
• C0975 = 19538 (C0472/18 to MFAIL-THRESHLD)
• First enter approx. 2 % under C0472/18 (reference: nmax C0011)
7. Connect reset input (here with terminal X5/E5
TRIP-RESET)
• C0972 = 55 (DIGIN5 to MFAIL-RESET)
8. Enter all function blocks used (except for codes and digital inputs DIGIN) into free positions of the processing table in C0465.
Note!
All settings must be stored non-volatilely in a parameter set under C0003.
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