3-14 P/N 480-0005-00-15
Chapter 3: Installation
Connect Power - CMS960 (8 slot) and CMS240 (2 slot), DC only
Power Requirements
Power requirements for connecting the DC power to the Tenor CMS960 (8 slot) and Tenor CMS240 (2 slot)
are as follows:
• Voltage range -40V to -60V DC
• Maximum current: 6 Amps (CMS240), 16 Amps (CMS960)
• You must provide short circuit (over current) protection in case of accidental wire crossing or reversed
polarity connection.
Material Requirements
• Stranded copper wire that is a minimum of 14 AWG (American Wire Gage) or a maximum of 10 AWG
(min 2.0 mm
2
, max 5.0 mm
2
) and insulation rated at a minimum of 90° C or better must be used for all
wires to the power inlets.
Connect Power
WARNING:
Before making any changes to the wiring of your Tenor CMS, turn off both circuit breakers
and open the upstream disconnect switches at the source of the DC power feeds.
NOTE: The electrical installation must comply with the National Electrical Code 1996 or other country
specific electrical installation.
NOTE: For illustration purposes, the CMS240 (2 slot) is shown.
Figure 3-13 DC Circuit Breaker and Power Inlet
CPU
2
4
8
3
7
26
15
TX/RX
1
2
3
4
Link
Config
1
2
3
4
Off On
Cons ole
10/100
Ethernet
O
n
1
O
f
f
0
-48 RTN
O
n
1
O
f
f
0
-48 RTN
Circuit Breaker
Power Inlet
Chassis Rear
