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4.9
Power Distribution Unit
The power distribution unit (Model: AEP7D, AEPV7D) needs to be ordered separately.
The power distribution unit receives the power supply from the designated input terminals and
outputs the power through the distribution connectors.
The safety control unit, safety node unit or optical ESB bus repeater does not have power
switch to turn on or off the power supply.
You need to plug or unplug the power supply cable from the power distribution connector for
turning the power on or off.
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AEP7D Configuration
AEP7D can be used in a dual-redundant power supply scheme. The two power supplies may
use two separate power sources. Each power supply has seven distribution ports.
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TM1, TM2 Terminals
These terminals (M4 screws) are used for connecting external power supplies.
•
L (+) : Ungrounded
•
N (-) : Grounded
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Grounding terminal
The grounding wire can be connected to this terminal (M4 screw).
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CN1 and Odd Number Connectors
CN1 and odd number connectors are the power distribution connectors.
In the dual power supply configuration, one power supply connected to TM1 terminal is dis-
tributed to the CN1 and odd number distribution connectors.
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CN2 and Even Number Connectors
CN2 and even number connectors are the power distribution connectors.
In the dual power supply configuration, one power supply connected to TM2 terminal is dis-
tributed to the CN2 and even number distribution connectors.
For single power supply
For dual power supply
Power Input terminal
Power distribution connector
(CN1 to CN14)
For AC power supply
+
For DC power supply
N
L
For AC power supply
For DC power supply
-
Grounding terminal
Grounding terminal
Figure 4.9-1 Power Distribution Unit
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AEPV7D Configuration
AEPV7D can be used in a dual-redundant power supply scheme. The two power supplies
may use two separate power sources. Each power supply has seven distribution ports. The
two power supplies are independent from each other, and maintenance can be performed for
one supply while the other is supplying power.
<4.9 Power Distribution Unit >
4-25
IM 32Q06C10-31E
4th Edition : Jan.30,2015-00