Xtreme Power Conversion Corporation
M90U-80 & 140 User’s Manual
Page 17
Uninterruptible Power Supply
2.9.1 STS Module
The STS Module is installed before leaving factory. It provides the bypass power when UPS is in Bypass Mode.
In addition to offering bypass power, it includes some communication interfaces. For detailed information, please
refer to Chapter 5.
No.
Item
Description
1
Extra Comm.
Slot
This slot can insert an optional M90U-Comm card which can enhance the com
-
munication capability of UPS system. It can provide another SNMP slot, program
-
mable dry contact ports and external temperature probe connection.
2
LCD Port
This port connects to Control Panel with a factory installed cable.
3
RS232 port
Local communication interface.
4
USB port
Local communication interface.
5
SNMP Slot
This slot can work with optional cards, SNMP, relay or Modbus card.
6
Dry contact
ports
CN1 ~ CN8. For detailed information, please refer to Chapter 5.
Figure 2-18 STS Module