APC AP9630 User's Guide download pdf (Page 31)

29UPS Network Management Card 2 User’s Guide

(e.g., a UPS is already off when the Reboot UPS action starts), that UPS logs an event, and performs

the rest of the action, if any.

• All participating UPS devices synchronize their performance of the action (within a one-second time

period under ideal conditions for Smart-UPS), but sometimes longer.

• In reboot and sleep actions:

– Immediately before the initiating UPS begins waiting the time specified as Return Delay, by

default it waits up to 120 seconds (its configurable Power Synchronized Delay) for any UPS that

does not have input power to regain that power.

Any UPS that does not regain input power during that delay does not participate in the

synchronized restart, but waits until its own input power returns before restarting.

– The LEDs on the front of the UPS do not sequence their lights as they do for a normal (not

synchronized) reboot or sleep action.

• UPS status and events are reported in the same way for synchronized actions as for actions on

individual UPS devices.

Guidelines for Synchronized Control Groups. Before you configure this UPS as a Synchronized Control

Group (SCG) member, review these guidelines:

• All UPS devices in an SCG must be the same device.

• SCGs are supported for any Smart-UPS with a card slot that accepts a Network Management Card.

• When its membership in an SCG is enabled, the

NMC blocks UPS communications from a connected

management device on the serial communications port. However, the

NMC still allows access to the

command line interface on the serial communications port.

• See also the Knowledge Base articles FA156114 and 11135, on the support website www.apc.com.

Display status of a Synchronized Control Group member. When SCG is enabled, the following

additional information is displayed about the SCG membership of this group mem

ber: its IP address, its Input

Status (Good is acceptable; Bad is not acceptable); and its Output Status (On or Off).

Field Description

Group

Membership

When you enable or disable Synchronized Control Group (SCG) membership, the change

causes the management interface to reboot the next time you log out, and is implemented at that

time.

The Sync Control option uses SNMPv3 for group communication. When you enable group

membership, SNMPv3 is enabled automatically.

Control Group

Number

The unique identifier of the SCG. This value must be a number from 1 through 65534. A UPS

can be a member of only one SCG. All members of an SCG must have the same Control Group

Number.

Multicast IP

Address

Specify the IP address used to communicate among members of an SCG. The allowed range is

224.0.0.3 to 224.0.0.254. All members must have the same Multicast IP Address.

Power

Synchronized

Delay

When the initiating UPS of the SCG is ready to turn on, this value is the maximum time that the

initiating UPS will wait, if necessary, for other group members to regain input power. (The

value is 120 seconds by default).

When this delay expires, the initiating UPS will wait to recharge its battery to the runtime

specified as Return Runtime Duration Offset (below), if necessary, then wait the time

specified as “Return Delay”, and then turn on.

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APC AP9630 User's Guide Page 31

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