Input Dry Contacts | Liebert NX UPS System manual

Single Module UPS Installation

1.8Dry Contacts

The UPS provides input dry contacts and output dry contacts.

1.8.1Input Dry Contacts

There are several input dry contacts at the X3 slot.

Figure 3 Input dry contacts

12V 12V

12V

12V

X3

	J4
12V	GEN	BtG	ENV

	J26
GND	12V	AUX I	T IT

	J30
AUX O	T OT	F FAN	FUSE

J10

OL

GND

FB

DRV

X3 Ancillary Control and Alarms

X3 IN DRY: Environmental, Battery Ground Fault and Generator Contacts

The UPS accepts external signalling from voltage-free (dry) contacts connected to finger-proof, push-in ter- minal X3 IN DRY. Subject to prior software programming, the signalling is accepted by the UPS when connection between the relevant terminal and the +12V terminal is altered. Cables connected to X3 IN DRY must be segregated from power circuits (for screening purposes), double insulated and of a typical 0.5 to 1mm2 cross-section area for maximum runs between 25 and 50 meters (82-164 ft), respectively.

Table 3	Input dry contacts at X3

Position		Name	Description
J4.1		ENV3	Battery Room Alarm (NC)
J4.2		BtG	Battery Ground Fault Detection (NC)
J4.3		GEN1,2	On Generator (NO)
J4.4		+12V	+12V Power

1 - Must be configured by configuration software before becoming active.

2 - When activated, the charger current can be limited, via software, to a percentage of the full charger current (0-100%). 3 - Activating this feature turns the battery charger off.

1.8.2Maintenance Bypass Cabinet Interface

J26 and J30 are the MBC interface.

Table 4 Maintenance bypass cabinet interface

Position	Name	Description
J26.1	T_IT1	Input transformer overtemperature (NC)
J26.2	AUX_I	Reserved
J26.3	+12V	+12V Power
J26.4	GND	Power Ground
J30.1	FUSE	Reserved
J30.2	F_FAN	Fan Fail Alarm (NC)
J30.3	T_OT1	Output Transformer Overtemperature (NC)
J30.4	AUX_O	Reserved

1- Must be configured by software before becoming active

NOTE

All auxiliary cables of terminal must be double-insulated. Wire should be 0.5-1.5mm2

(16-20AWG) stranded for maximum runs between 25 and 50 meters (82-164ft.) respectively.

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Liebert NX UPS System Input Dry Contacts, X3 Ancillary Control and Alarms, Maintenance Bypass Cabinet Interface

Contents

Liebert NX UPS Page Table of Contents UPS MULTI-MODULEINSTALLATION Dual Bus System Operating Procedures OPTIONS-FORASSEMBLY Inside the UPS CabinetTechnical Specifications Operator Control Panel and Display Figures Tables Feature Set for Region Input OutputAust/NZ Options Model Identification Safety Precautions Conformity and Standards User-Serviceable Parts Battery Voltage Exceeds 400VDC Introduction Preliminary Checks External Battery Room LocationUPS Room Storage Positioning System Cabinets2 10 to 30kVA UPS Moving the Cabinets External Protective Devices UPS Output External BatteryEarth Leakage RCD Distance from floor to connection point on the equipment Power CablesMaximum steady state AC and DC currents Cable Termination Common Input Connections Output System Connections Monitor Board Features Control Cables and Communication X3 Ancillary Control and Alarms Maintenance Bypass Cabinet InterfaceDry Contacts Input Dry Contacts External Circuit-Breaker Interface Jumper connection for BCB interface Output Dry Contacts Output dry contact relays+12V J13 J21 J28 Emergency Power Off Input X5 Auxiliary DC Power OutputX7 External Battery Temperature Detector Interface X6 Analog Input Interface External Bypass Switch Interlock Battery Start FacilityBattery Start Button Serial Ports RS232-1 and RS232-2 Battery Installation Safety Hazardous battery voltage present behind covers Battery Cabinet Battery Temperature Sensor Optional Moving the Battery CabinetsCable W2 is packed with the temperature sensor Name W2 L=5m Name W1 L=30m Battery cabinet bottom cable entry location General Arrangement Drawings Bottom cable entry Battery cabinet internal layout Item # Item Name Battery Power CablesConnection Principles Battery Control Connecting the BatteryBattery Room Design Fitting the Batteries General X23 X24 Monitor BoardX24 X21 Distribution Cabinet Cabinet InstallationParalleled UPS Modules Power Cables External Protective Devices Hot-Standby UPS Modules Control Cables Intermodule Control Input Distribution Upstream Dual Bus System Control Wires Extended Dual Bus Synchronization Option DBS Interface BoxParallel Board X2-2 X1-1 Parallel System Parallel Board DBS Cable X2-2 X1-1 Parallel System Installation Drawings General arrangement-10-30kVA UPS module External Battery Input Output Main Input Bypass Input NXe 10-30kVA Top View Internal battery layout and connecting-GP12120 F2 12AH/12V Internal battery layout Split-Bypass Input Static Transfer Switch Battery Temperature Compensation Socket Outlet Redundant Control Power Supply BoardMulti Module UPS-1+N Modes of Operation Bypass Mode Maintenance Mode Manual BypassECO Mode Single UPS Only Parallel Redundancy Mode System Expansion Normal Function Battery Management-Set During CommissioningBattery Protection settings by commissioning engineer UPS operating modes Power SwitchesRotary switch configurations UPS Startup Start-Up ProcedureIndicator State Verify Switching Between Operation Modes Switching the UPS from Normal to Maintenance Bypass Powering Down the UPS Powering Down the UPS and Maintaining Power to Load Emergency Shutdown With EPO Auto Restart Changing the Current Date and Time Command PasswordLanguage Selection Isolating One Module in a Multi-Module System Inserting One Module into a Multi-Module System LED Function Status Button Function UPS control and display panel componentsComponent # Function Mimic Power Flow Audible Alarm Buzzer Menu key Icons and their meaning Direct Access Push Buttons KeysLCD Monitor and Menu keys Load System Battery Records Language Settings Command VersionWhen configured, input transformer voltages are Displayed on the front LCD. When not activated, Detailed Description of Menu Items UPS system windowDescriptions of UPS menus and data window items Menu Type Item Type Explanation Number to be dialed to send an alarm notification UPS messages Message Description / Suggested Action if any Bypass voltage exceeds the limit UPS is confirmed to overload and the overload times out UPS messages Dynamic Energy Flow Chart and UPS Help Screen Prompt Pop-Up WindowsPrompt windows, meanings Prompt Meaning Default Screen Saver Default screen Terminal Name Definition Battery Ground Fault DetectionProtection Redundant Fan for Power Module Fan120Fan120 AC Fan OC Web Card SNMP/HTTP Network Interface Card OC Web Card data summary window Relay Card pin configuration Relay CardMultiport-4 Card Relay card jumpers Pin Description SiteNet MultiPort4 Intellislot pin assignmentAssignment Remote Alarm Monitor OC485 Web Card Modbus, Jbus, IGM Net Dust filter replacement Dust Filter for 10-30kVA Environmental characteristics Conformity and StandardsCompliance with European, international standards Overall efficiency, heat losses and air exchange Mechanical characteristics Rectifier AC input mains Inverter output to critical load Bypass mains input Technical Specifications Technical Specifications Page Ne t ItiTi n That