9
• Do not connect any pins to COM3 [NC].
• Be sure to connect pin number 5
(GND) of COM1, COM2, COM3, and
COM4 (RS-232C) to the host unit's
Signal Ground terminal.
• Be sure to confirm what settings will be
used by the other device and set the
slide switches accordingly. Failure to
do so can result in a unit malfunction or
damage.
• Whenever changing the PS-A
switches, be sure to first turn the PS-
A's power supply OFF. Failure to do so
can cause a PS-A malfunction.
• Connect the FG terminal line to the shell.
• FG and SG terminals are internally con-
nected in the PS-A. When connecting to
another device, be sure not to create an
SG shorting loop in your system.
RAS Interface
• Be sure to use only the rated voltage
level when using the No. 2, 15 [+5V]
and No.3 [+12V] for external power
output. Failure to do so can lead to a
unit malfunction or accident.
• For the circuit diagram, refer to “PS-3710A/
PS-3711A Series Reference Manual”.
Pin #
RS-485
Signal Name
Description
1
DATA +
Send/Receive Data(+)
2
DATA -
Send/Receive Data(-)
3
NC
No Connection
4
NC
No Connection
5
GND
Signal Ground
6
NC
No Connection
7
NC
No Connection
8
NC
No Connection
9
NC
No Connection
FG
FG
Frame Ground
(Common with SG)
Interfit Bracket
#4-40(UNC)
Pin
#
Signal Name
Description
1
GND
Ground
2
+5V
Output Current:100mA or less
(with a total of 2 pin and 15
pin)
Output Voltage: 5V±5%
3
+12V
Output Current: 100mA or
less
Output Voltage: 12V±5%
4
NC
-
5
RST(+)
Reset in(+)
6
DIN0(+)
Data in 0(+)
7
DOUT2(-)
(UPS
Shutdown(-))
Data out 2(-)
(UPS Shutdown(-))
8
DOUT2(+)
(UPS
Sh))
Data out 2(+)
(UPS Sh))
9
DOUT0(-)
Data out 0(-)
10
DOUT0(+)
Data out 0(+)
11
RST(-)
Reset in(-)
12
DIN0(-)
Data in 0(-)
13
DIN1(+)
Data in 1(+)
14
GND
Ground
15
+5V
Output Current:100mA or less
(with a total of 2 pin and 15
pin)
Output Voltage: 5V±5%
16
DIN2(+)
Data in 2(+)
17
DIN2(-)
Data in 2(-)
18
DIN3(+)
Data in 3(+)
19
DOUT1(-)
Data out 1(-)
20
DOUT1(+)
Data out 1(+)
21
DOUT3(-)
Data out 3(-)
22
DOUT3(+)
Data out 3(+)
23
DIN3(-)
Data in 3(-)
24
DIN1(-)
Data in 1(-)
25
NC
-
