Figure 2-1. Dc Power Connector; Table 2-1. Dc Connector Symbol Definitions - ADTRAN MX2800 STS-1 System Manual

MX2800 STS-1 User Manual
DS3/STS-1
L
NONCRITICAL
A
N
OUT
M
NO COM NC
O
D
E
M
CRITICAL
Symbol
PWR FAIL
RET
The following UL requirements must be met during installation of the MX2800 DC version:
1. Disconnect all power sources prior to servicing. Unit may use multiple power sources.
2. Voltage input requirement for DC version is Minimum –48 VDC, 0.8 amps
3. Voltage input requirement for AC version is Minimum 120 VAC, 0.32 amps
4. Connect to a reliably grounded –48 VDC source which is electrically isolated from the AC source. Use
24 VDC source for 1202289L3.
5. The branch circuit overcurrent protection must be a fuse or circuit breaker rated minimum 48 VDC,
maximum 20 amps.
61204659L1-1A
A
IN
B

Figure 2-1. DC Power Connector

Table 2-1. DC Connector Symbol Definitions

Definition
Battery backup connector. If the AC fails, a trap is sent to
as notification when connected to the 4175043L2 battery
backup or equivalent system.
–
Negative side of DC power source (usually –48 VDC)
Positive side of DC power source (usually ground)
Frame Ground
Installation and Operation, Section 2
DSX-1/E1
(OUT)
DSX-1/E1
(IN)
Power Up
115 AC 50/60Hz
DC POWER
0.8A
PWR PWR
– –
RET RET
FAIL FAIL
B A
-48V 0.7A
T R S T R S
CLK CLK
A B
2-3