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4.5
Operation & Display Unit (NPN1)
The NPN1 is a control board on the operation & display Unit. Connections to the
NPN1 printed board are shown in this section.
4.5.1 Power Connectors (CNP3, CNP2)
The CNP3 is a connector for 24VDC power input.
The CNP2 is a connector for supplying power to the user media drive unit (FDU2).
(1) CNP3 (+24 VDC Input)
Input 24VDC power to connector CNP3
The power should be synchronized with the power on output signal (PON) from the
power module T9PW2 on the main rack.
Power ON
AC power
supply
A
Connector name
NPN–CNP3
Conductor sectional area
+24VDC power supply
+24VDC
0V
GND
Either A or B is required.
Fig. 4.5.1
Table 4.5.1
Name
Housing
Contact
< Wire specification >
– 72 –
Power ON
CN3
–2
–1
–4
B
Type
VHR–4N
BVH–21T–P1.1
0.75 sq.
NPN1
P24V
GND
FG
Maker
JST
JST
STE 73843
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