System Description
2.4Liebert MultiLink™ Shutdown
The parallel POD supports the orderly shutdown of computer operating system through its compati- bility with Liebert MultiLink 1.5 software. When properly configured to operate with Liebert Mul- tiLink 1.5, the parallel POD will operate as a complete system; On Battery and Low Battery events will not be sent from the UPS when it is operating in redundant mode and the remaining UPS is able to support the total load.
For the paralleling system to work properly with Liebert MultiLink 1.5, each connected 10kVA UPS must have an SNMP card properly installed and configured in the Liebert IntelliSlot® bay. Liebert MultiLink 1.5 will not work properly with the parallel system through the serial port connection.
Figure 2 Liebert MultiLink connection diagram for parallel POD
Computer With
Liebert
MultiLink Agent
Ethernet
SNMP | SNMP | SNMP |
UPS 1 | UPS 2 | UPS 3 |
Parallel | Parallel | Parallel |
Port | Port | Port |
Parallel
Port
Liebert
GXT2-PP20KRT208
Parallel POD
The SNMP card must be properly configured with an IP ADDRESS, NETMASK and GATEWAY. Refer to the SNMP card user manual for detailed instructions. The SNMP card must also be config- ured with a community string to be monitored by Liebert MultiLink. For details, refer to the Liebert MultiLink 1.5 user manual,
Liebert MultiLink 1.5 also must be properly configured for the software shutdown to work properly with the parallel system. Refer to the Liebert MultiLink 1.5 user manual for detailed configuration instructions. Two important settings required for Liebert MultiLink shutdown to work properly are:
•The connection option “Liebert UPS (using SNMP port 162)” must be selected, either during installation or later (see Figure 3; refer to the MultiLink 1.5 user manual,
•The options “Enable shutdown after an
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