inform ETR EVO Series, Installation And Operating Manual

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ETR EVO UPS User Manual (Ver. 1.0) Page 27
Maximum allowed resistive contact currents for several voltages are given on the table below:
Applied voltage Maximum contact current for resistive load
Up to 42 VAC 16 A
Up to 20 VDC 16 A
30 VDC 6 A
40 VDC 2 A
50 VDC 1 A
60 VDC 0.8 A
Each relay has both a normally open (NO) and a normally closed (NC) contact. One end of these
contacts is common. Normal states of the relay contacts are shown on the figure at the beginning of
the “communications” section.
Relay functions:
Relay Function
Relay 1
General Alarm (default value, can be changed from LCD )
Relay 2
General Alarm (default value, can be changed from LCD )
Relay 3
General Alarm (default value, can be changed from LCD )
Relay 4
General Alarm (default value, can be changed from LCD )
4.2.2.7. USB Converter (Optional)
This card is connected to serial port of UPS. It maintains connection availability to to USB port present
on your computer.
The connection of the USB converter card is described below;