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6 (E)
S
POWER
A
B
I
O
POWER
PFV-D50A
DIGITAL INTERFACE UNIT
I
O
y
⁄
AC IN
A
B
STATUS OUT
1
2
3
4
(ISR)
REF IN
REMOTE
ROUTING SWITCHER
Location and Function of Parts
Front panel
Rear panel
1
Indicator A
Lights in green when power unit A is turned on.
Flashes in red in the following cases:
• The temperature inside power unit A has risen to a
specified level.
• The ventilation fans have stopped rotating.
• Trouble occurs with the output voltage of power unit
A.
• When both power units A and B (BKPF-PS50A
Backup Power Supply Unit, optional) are installed
and only power unit B is turned on.
• A voltage overload has occurred.
2
Indicator B
Lights in green when power unit B is turned on.
Flashes in red in the following cases:
• The temperature inside power unit B has risen to a
specified level.
• The ventilation fans have stopped rotating.
• Trouble occurs with the output voltage of power unit
B.
• When both power units A and B are installed and
only power unit A is turned on.
• A voltage overload has occurred.
3
POWER A switch
Turns on and off power unit A.
4
POWER B switch
Turns on and off power unit B.
5
Cover plates
Remove the corresponding plates to install the optional
boards.
2
Indicator B
4
POWER B switch
1
Indicator A
3
POWER A switch
!™
~AC IN B connector
6
y
(signal ground) terminal
0
REMOTE connector
5
Cover plates
7
STATUS OUT connector
!¡
~AC IN A connector
9
Loop-through output connector
8
REF IN connector