ABB Symphony Harmony Series Instructions Manual page 82

T H U M B S C R E W S (4 )
P OW E R S U P P LY
TR AY S
Figure PR5-1. Power Supply Tray Installation
□
Field Installation
WBPEEUI210509A1
5. Slide another power supply tray of the same type into the
□
other side of the power chassis and push until it firmly con-
nects with the power chassis.
6. Turn the two thumbscrews clockwise to secure the power
□
supply tray to the power chassis.
7. Repeat Steps 3 through 6 if for the second power chassis if
this is a dual power chassis installation. Output voltages from
C1
each power chassis must be kept isolated from each other to
avoid damage to the power system. This typically means that
one power chassis supplies module power (±15 VDC and
5 VDC) and the other supplies field I/O power (24 VDC,
48 VDC, and 125 VDC).
The power supply trays can be installed into an operational
control system. This procedure assumes that the remaining
FR O N T D O O R R E M OV E D
Procedure
P O W E R C H A S S IS
T044 72A
PR5 - 3