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5
COMMUNICATION
CAUTION! RISK OF ELECTRIC SHOCK
The UPS has an internal battery supply with a nominal voltage of 72Vdc. The appliance outlets may be
electrically live, even when the UPS is disconnected from the mains.
The UPS contains potentially hazardous voltages. Do not open the unit, there are no user serviceable
parts inside.
WARNING!
Connect only Safety Extra Low Voltage (SELV) Circuits to any of these communication I/O ports.
5.1
USB PORT
The USB port is a plug-in interface port which enables advanced communication between the UPS and the computer (UPS
software required). The interface port is operative as soon as the mains power cord is plugged into a live wall outlet, even if
the UPS is switched off.
For more information please refer to the user manual that comes with the interface software. We strongly recommend to
use only original GE software products in combination with the interface port.
NOTE
The change of some settings can cause the unit to switch from bypass to standby and output power is lost.
5.2
RJ11 PORT
The RJ11 port is a plug-in contact interface port.
Pin #
Function
1
Mains failure
2
General alarm
3
Battery low
4
On bypass
5
Remote UPS shutdown / RxD
6
GND
*) Active if the output voltage of the UPS is no longer
guaranteed due to other circumstances than already indicated by pin 1-3-4. The alarms are listed in section 4.4.10
Absolute Maximum Ratings
V
Voltage applied on any output pin
O
I
Output sink current
O
V
Voltage applied on input pin
I
Note: Exceeding these ratings may damage the device or anyway affect its reliability
5.3
USB / RS232 / RELAY INTERFACE CARD (OPTION)
The card is equipped with
• USB port as described in 5.1
• RS232 port
• potential free change-over relay contacts for the following alarms: mains failure/general alarm/battery low/bypass active
For more information please refer to the user manual that comes with the interface card.
5.4
SNMP / WEB INTERFACE CARD (OPTION)
The SNMP card makes the UPS 'SNMP manageable': it allows the data interface to be connected directly to an Ethernet
network. For more information please refer to the user manual that comes with the interface card.
Modifications reserved
GE_UPS_OPM_VHU_208_2K0_3K0_XUS_V010.docx
*)
MIN
MAX
-0.2V
48V
30mA
-25V
25V
Critical Power
DC Characteristics
V
High-level input voltage
IH
V
Low-level input voltage
IL
V
Low (active) output voltage
OL
Fig. 5.2
CONDITION MIN
4.0V
Io<1mA
Operating Manual VH2000-3000 208V UL
MAX
0.4V
0.4V
Page 19/22
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