Function block library
7-151
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SHB9300CRV EN 2.0
C0989/1
MFAIL-FAULT
MFAIL-RESET
C0971
C0972
1
0
C0988/1
C0970
C0989/2
CTRL
MFAIL-NOUT
MFAIL-N-SET
MFAIL
E1
E2
E3
E4
E5
1
0
C0114/1...5
DIGIN
DIGIN1
DIGIN2
DIGIN3
DIGIN4
DIGIN5
C0443
28
DCTRL -X5/28
X5
Fig. 7-112 Example of a mains failure detection by an external monitoring system
Combination of these methods
l
These methods are combined via an OR link with an internal function block. OR5 is used in the
example. Set the signal links:
– C0688/1 = 5005 (MCTRL-DCVOLT to CMP2-IN1)
– C0688/2 = 19540 (free code C0472/20 to CMP2-IN2)
– Set function of the comparator CMP2 with C0685 = 3
– C0838/1 = 10655 (CMP2-OUT to OR5-IN1)
– C0838/2 = 54 (DIGIN5 to OR5-IN2)
– C0971 = 10570 (OR5-OUT to MFAIL-FAULT)
Enter the function blocks CMP2, OR5 and MFAIL in free positions of the processing table in C0465.
C0989/1
MFAIL-FAULT
MFAIL-RESET
C0971
C0972
1
0
C0988/1
C0970
C0989/2
CTRL
MFAIL-NOUT
MFAIL-N-SET
MFAIL
E1
E2
E3
E4
E5
1
0
C0114/1...5
DIGIN
DIGIN1
DIGIN2
DIGIN3
DIGIN4
DIGIN5
C0443
28
DCTRL -X5/28
X5
C0686
C0687
C0689/1
CMP2
CMP2-OUT
CMP2-IN1
C0689/2
CMP2-IN2
C0688/1
C0688/2
C0685
C0472/20
MCTRL-DCVOLT
OR5
≥1
OR5-IN1
OR5-IN2
OR5-IN3
OR5-OUT
C0839/1
C0839/2
C0839/3
C0838/1
C0838/2
C0838/3
FIXED0
Fig. 7-113 Example of a mains failure detected by different sources
7.6.48.2 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):
1. Generate speed setpoint channel:
– C0970 = 5050 (NSET-NOUT to MFAIL-N-SET)
– C0890 = 6100 (MFAIL-NOUT to MCTRL-N-SET)
2. Determine start value for the sequence (here actual speed):
– C0977 = 6100 (MFAIL-NOUT to MFAIL-SET)
3. Determine source for the setpoint of the DC bus voltage (here by a freely connectable code
FCODE C0472/19):
– C0978 = 19539 (C0472/19 to MFAIL-DC-SET)
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