2-Series Card Cage System
Crestron
RACK2
Power Connections
Power from the 24 VDC pin of the NET connector on the CPU2 is internally wired
to the INT terminal (24 VDC) of each PWR mini connector.
The G (ground) terminal of the CPU2 NET terminal is internally common to all hub
connectors and the CPU2.
The EXT terminal of the PWR mini connector on the NET2 hub is internally wired
to the 24 VDC terminals of the mini-Cresnet connectors in each group of four hub
ports.
To supply power to the NET2 hub using a CNPWS-75 power supply connected to
the NET terminal on CPU2, a jumper is required (supplied) from the INT terminal to
the EXT terminal.
Power Connection for the Hub using a CNPWS-75 Connected to CPU2
NET
2
CPU
2
A
B
C
D
E
F
G
H
P
W
R
NET
24 Y Z G
24 Y Z G
24 Y Z G
24 Y Z G
24 Y Z G
24 Y Z G
24 Y Z G
24 Y Z G
24 Y Z G
G
INT
EX
T
24
V
D
C
GN
D
From Cresnet
Power Supply
CNPWS-75
Jumper Required from INT to EXT
to Apply 24 VDC to each group of
four hub connectors
All Grounds are Common
If the power needed for a hub segment exceeds the power available from the power
supply (75 watts, max.) connected to the CPU2, remove the jumper from the 3-pin
mini connector to disconnect the internal power supply, then connect the (Crestron
24 VDC - regulated power supply) 24 VDC to the EXT terminal and ground to the G
terminal.
NOTE:
If a device or a Cresnet network connected to a hub segment has its own
power source, do not make any connection to the applicable POWER port. Although
equipment damage is unlikely, Crestron does not recommend applying two power
sources to the same circuit.
Depending on the power requirements, you can connect additional power supplies in
the following manner.
•
An additional power supply for one group of four hub connectors (using the
CPU2 power for the other group of four hub mini-connectors)
•
An additional power supply for each group of hub connectors
(disconnecting the CPU2 power supply from NET2)
Refer to the following diagram.
10
•
2-Series Card Cage System: RACK2
Operations Guide – DOC. 5958
