Figure 7-3. Mx2820 Fan Module Power Connections - ADTRAN MX2820 System Manual

• –48 VDC B CO supply to the –48 VDC B Fan Module terminal
• –48 VDC B CO return to the –48 VDC RET B Fan Module terminal
See Figure 7-3.
MX2820 Fan Module

Figure 7-3. MX2820 Fan Module Power Connections

f. Install the fan filter.
5. For the Pusher Fan Assembly, determine the voltage requirements per system and CO
requirements, then connect the power. Use a screwdriver appropriate for the fuse panel or
circuit breaker panel and a #1 phillips-head screwdriver for the Fan Module terminals.
Connect the Pusher Fan Assembly as follows:
• ±24/–48 VDC A CO supply to the ±24/–48 VDC A IN fan terminal
• ±24/–48 VDC A CO return to the ±24/–48 VDC A RET fan terminal
• ±24/–48 VDC B CO supply to the ±24/–48 VDC B IN fan terminal
• ±24/–48 VDC B CO return to the ±24/–48 VDC B RET fan terminal
See Figure 7-4.
61186003L1-1D
Section 7, User Interface Guide - DLP-503, Connect Power and Ground
1181006L1
INPUT; 48VDC; 0.2A
THIS UNIT MAY BE POWERED
BY REDUNDANT POWER SOURCES
25 Ace Petit CD
FUSE / 1 AMP
LISTED
ACCESSORY
USS GMT-X USS GMT-X USS GMT-X
I.T.E.
E13083
USE COPPER CONDUCTORS ONLY
-48V -48V -48V -48V ALM ALM
RET RET DC DC A B
A B A B
USE COPPER CONDUCTORS ONLY
-48V -48V
RET RET
A B
-48V -48V
RET DC
A
-48V DC Supply
25 Ace Petit CD 25 Ace
USS GMT-X USS GMT-X USS GMT-X
-48V -48V ALM ALM
DC DC A B
A B
-48V -48V
RET DC
Petit CD
7-23