6 The contact signal functions
6-1 Contact signal functions
BU150R
87
6
6-1-7 Example of the use of the Contact Signal circuit
Example of BU signal output circuit and
the connected circuit
Example of BS signal input circuit
and the connected circuit
Remote ON/OFF circuit
6-1-8 Notes for the use of the Contact Signal
When connecting a device such as a relay that generates counter electromotive force to
the signal output circuit, connect diodes that prevent counter electromotive force to both
ends of the relay.
Explanation:
When power is restored after the unit stopped automatically during a power failure, the unit
automatically restarts and supplies power. If you do not want to start the connected devices,
turn OFF their switches or set the auto startup setting after recovery from power failure
("Setting" switch 2) to ON (Auto startup is not performed).
To port
on PC
4.7K
TLP521
Inside of
UPS
External
Circuit
+12V
1K
Ω
C2
C1
+5V
C1,C2 : 0 pF to several
thousand pF
(Consider the capacity according to the
operating environment.)
*
COM
UPS side
GND
C2458
BS
From port on PC
12V
1K
1.2K
TLP521
System side
Connecting cable
(twisted or shielded)
Example of
remote
ON/OFF
Remote
ON/OFF (+)
Remote
ON/OFF (-)
UPS side
Содержание BU150R
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