ABB REO 517 Applications Manual page 291

 
Interlocking
Q1
Q0
Q6
BH_LINE_A
Q9
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For a breaker-and-a-half arrangement, the modules BH_LINE_A, BH_CONN and
BH_LINE_B must be used.
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For application without Q9 and Q8, just set the appropriate inputs to open state and dis-
regard the outputs. In the functional block diagram, 0 and 1 are designated 0=FIXD-
OFF and 1=FIXD-ON:
• Q9_OP = 1
• Q9_CL = 0
• Q8_OP = 1
• Q8_CL = 0
If, in this case, a line voltage supervision is added, then rather than setting Q9 to open
state, specify the state of the voltage supervision:
• Q9_OP = VOLT_OP
Q51
Q52
Q53
Q61 Q0
Q51 Q52
Q8
BH_CONN
A (BB1)
B (BB2)
Q2
Q51
Q0
Q52
Q6
Q53
BH_LINE_B
Q62
Q9
Q8
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