Liebert GXT2-6000RTL630 Communications Interface Port, Pin 4 Remote Shutdown on Battery

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Communications

10.0COMMUNICATIONS

10.1Communications Interface Port

The GXT2-6000RTL630 has a standard DB-9 serial port female connector located on the rear of the UPS unit. Several signals are provided on this port and are assigned as follows:

Table 1 DB-9 pin assignment

DB-9 Assignment Description

Pin

1Low Battery (open collector)

2UPS TxD (typically RS-232 levels)

3UPS RxD (typically RS-232 levels)

4Remote Shutdown (5-12VDC, 10-24mA max; battery operation)

5Common

6Remote Shutdown (short to pin 5); all modes of operation

7Low Battery (open emitter)

8Utility Power Failure (open emitter)

9Utility Power Failure (open collector)

 

Pin Assignment

Collector to Emitter*

 

6

7 8

9

(+)

Open

 

 

 

 

Collector

 

 

 

 

330 Ohms

 

 

 

 

 

(-)

Open

1

2

3

4

5

Emitter

 

*Maximum voltage and current on pins 1, 7, 8 and 9 are 60VDC and 10.0 mA

10.2Pin 4 - Remote Shutdown on Battery

1.This pin is functional only when the UPS is in battery mode. If the UPS is being powered by utility power, Pin 4 will ignore any signal on this pin.

2.Pin 4 requires a 5-12 VDC signal to shutdown. This normally comes from the serial port using Liebert's contact closure cable. It cannot be used with just a contact closure unless the relay is used to switch a voltage source. A 5-12 VDC signal for 1.5 seconds or greater is required to signal a shutdown. Signals for less than 1.5 seconds will be ignored. After Pin 4 receives a shutdown signal for 1.5 seconds, the command cannot be canceled.

3.A battery shutdown signal on Pin 4 will NOT cause an immediate Shutdown. A shutdown signal will start a 2-minute shutdown timer. The timer cannot be stopped. After 2 minutes, the UPS will shut down.

4.If utility power returns during the 2-minute timer countdown, the shutdown timer will continue until the end of 2 minutes and the UPS will turn OFF. The UPS must remain OFF for at least 10 seconds even if AC input power Returns before the UPS turns OFF. This serves to reset and restart the server.

Whether the UPS turns back ON when power is restored depends on the auto-restart setting: enabled or disabled.

If the auto-restart is disabled, the UPS will not restart after performing the 2-minute shutdown delay.

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Contents Liebert GXT2-6000RTL630 Page Table of Contents Maintenance TroubleshootingSpecifications Operating InstructionsImportant Safety Instructions Electromagnetic CompatibilityPage Glossary of Symbols Introduction Rectifier/Power Factor Correction PFC Circuit Battery ChargerInverter System DescriptionDC-to-DC Converter BatteryDynamic Bypass Top Trim 2 pieces tower use only Status Indicators Lower Bezel Battery Access Door UpperMain Frame and Electronics Major ComponentsInternal Battery Packs Battery Disconnect External Battery ConnectorFans UPS Output Circuit Breaker DB-9 Communication Port Relay Card SlotRemovable Power Distribution Box Bypass To UPS SwitchManual ConnectionsConfiguration Disk DB-9 port cover WHAT’S IncludedInstall the Main Cabinet Installation and ConfigurationTower UPS Installation Attach Bezels to TopRack-Mount UPS Installation Installing the Adjustable Rack-Mount Kit-Sold SeparatelyQuantity Return flanges Retaining Latches Front Innermembers membersScrews Install the Internal Batteries UPS orCabinet Apply grease inside Push it into the rackConnect the Internal Batteries Using the External Connector Connect Input/Output PowerBattery Door Captive Screws Remove these screws to release connectorFront of PD-L630 power distribution box Attach Power Distribution BoxLoosen these three UPS Distribution Box Electrical ConnectionsExternal Battery Cabinet Installation Initial START-UP and Electrical Checks Configuration Program GXT2-6000RTL630 Configuration Program FeaturesWhat You Will Need ON/Alarm Silence/Manual Battery Test Button Controls and IndicatorsAll indicators illuminated for illustration only Standby/Manual Bypass ButtonLoad Level Indicators 4 Green, 1 Amber Battery Level Indicators 5 GreenFault Indicator LED Red Bypass Indicator LED AmberNormal Mode Operation Battery Mode OperationBypass Mode Operation Battery Recharge ModePin 4 Remote Shutdown on Battery Communications Interface PortCommunications DB-9 pin assignmentUPS Intelligent Communications Liebert’s Ocwebcard DB9 RS232 port coveredRemote Emergency Power Off Repo switch connection diagramInternal Battery MaintenanceInternal Battery Replacement Battery Door Captive Screws 3U Battery Access DoorBattery Connectors Retaining screw Retaining bracketAC Power Connections DisconnectCaptive Box toReconnect Indicator meanings TroubleshootingLED status Diagnosis/Audible alarm Troubleshooting guide UPSTroubleshooting guide cont’d Alarm conditionsBattery run times Auto-Learning Battery Run Times Specifications UPS specificationsInternal battery specifications Output distribution specificationsBattery Parameters External battery cabinet specificationsModel Number Page Ne t ItiTi n That