ABB Symphony Harmony Series - Page 226

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)
TUR N O FF POW ER
TO F IE LD D E VIC ES
CONNECTED
TO B AS E
TUR N O FF POW ER
TO F IE LD D E VIC ES
CONNECTED
TO B LO C K
SET UP ANY JUMPERS
AND FUSES ON
REPLACEMENT THE
SAME AS BASE
BEING REPLACED
SET UP ANY JUMPERS,
FUSES, AND RELAYS
ON REPLACEMENT
THE SAME AS BLOCK
BEING REPLACED
I/O B L O C K B A S E
AU XILIA RY B LO C K
INS TA L L
REPLACEMENT
AU XIL IAR Y
BLOCK
DISCONNECT
WIRING AND
CABLING
REMOVE
AU XILIA RY
BLOCK
CONNECT
WIRING AND
CABLING
REMOVE
I/O M O DU L E
DISCONNECT
WIRING AND
CABLING
IN S TA L L
REPLACEMENT
BASE
CONNECT
WIRING AND
CABLING
REMOVE
BASE
INS TA L L
I/O M O D U L E
TR1985B
B
C
E
PR4
PR29
PR3
TURN ON
POWER TO
FIELD DEVICES
PR31
PR30
PR28
PR31
PR2
TR1986B
DOT-100/120
RELAY
D E
REPLACE
DOT-100/120
BLOCK RELAY
IN S TA L L
I/O M O D U L E
REMOVE
I/O M O D U L E
PR28 PR32 PR3