ABB Symphony Harmony Series, Instruction, Page: 226 / 402

Replacement
WBPEEUI240751C0 10 - 3
Figure 10-3. I/O Block and Auxiliary Block Replacement Flowchart (3 of 4)
Figure 10-4. Relay Replacement Flowchart (4 of 4)
TU R N O FF P O W E R
TO F IE LD D E V IC E S
C O N N E C T E D
TO B A S E
TU R N O FF P O W E R
TO F IE LD D E V IC E S
C O N N E C T E D
TO B LO C K
S E T U P A N Y J U M P E R S
A N D F U S E S O N
R E P LAC E M E N T TH E
S A M E A S B A S E
B E IN G R E P LAC E D
S E T U P A N Y JU M P E R S,
F U S E S, A N D R E LAY S
O N R E P LAC E M E N T
T H E S A M E A S B LO C K
B E IN G R E P LAC E D
I/O B LO C K B A S E
AU X ILIA RY B LO C K
IN S TA LL
R E P LAC E M E N T
AU X ILIA RY
B LO C K
D IS C O N N E C T
W IR IN G A N D
C A B LIN G
R E M OV E
AU X ILIA RY
B LO C K
C O N N E C T
W IR IN G A N D
C A B LIN G
R E M OV E
I/O M O D U LE
D IS C O N N E C T
W IR IN G A N D
C A B LIN G
IN S TA LL
R E P LAC E M E N T
B A S E
C O N N E C T
W IR IN G A N D
C A B LIN G
R E M O V E
B A S E
IN S TA LL
I/O M O D U LE
T R 19 85 B
B
C
E
P R 4
P R 29
P R 3
T U R N O N
P O W E R TO
FIE LD D E V IC E S
P R 31
P R 30
P R 28
P R 31
P R 2
TR 1 986B
D OT-100/120
R E LAY
D E
R E P LAC E
D OT-100/120
B LO C K R E LAY
IN S TA LL
I/O M O D U LE
R E M OV E
I/O M O D U LE
P R 28 P R 32 P R 3