3. Specifications
3.1 Internal Circuit
DB9 Internal Circuit Diagram
3.2 Electric Specifications
Parameter
Resistor*
DC Current
Diode
Reverse Voltage
Forward Current
Peak Forward Current
Relay
DC Voltage
DC Current
Note: DC current should be lower than 6mA. When the DC current exceeds 6mA, a resistor within DC current limitation should be added within the Remote
Shutdown/Common loop (e.g. a 2K resistor with at least 0.1W rating power). For more information, refer to diagrams A and B in 3.5 Application Example.
3.3 Pin Assignment
Pin Assignment
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Note: The shutdown pin (pin 3 and pin 4) only accepts 3-10s high level signal to perform the UPS shutdown.
DB9 Port Electric Specifications
Symbol
VR
IF (Peak)
VDC
IDC
Function
UPS Failure
UPS Audible Alarm
GND (Common for Pin 4)
Remote Shutdown
Common for Relays
Bypass Active
Low Battery
UPS On
Utility Failure
Max.
IR
6
6
IF
50
1
24
1.0
I/O
O/P
O/P
Power Ground
I/P
Power Supply
O/P
O/P
O/P
O/P
3
Min.
Unit
1
mA
-
V
-
mA
-
A
-
V
-
A