APC 60-80kW User Manual

APC Silcon

60-80kW 400V UPS Installation Guide

This manual is subject to change without

notice and does not represent a commitment

on the part of the vendor

Thank You!

Thank you for chosing the APC Silcon Series UPS. Please read this Installation Guide thoroughly prior to installing the system. It provides important information on safe and efficient installation.

The installation and use of this product must comply with national, federal, state, municipal and local codes.

Safety Symbols used in this manual

WARNING! Indicates a hazard which, if not avoided, could result in injury or death.

CAUTION!

NOTICE!

WARNING!

This UPS unit contains hazardous AC and DC voltages. Only qualified electricians should install the UPS, AC line and external batteries, and must be familiar with batteries and battery installation. Before installing, maintaining or servicing the UPS, shut off the UPS and disconnect all sources of AC and DC power. As the UPS has no built-in disconnection devices to switch off external AC and DC input power, ensure that disconnection devices are provided as separate parts in connection with the installation! The installer must provide each external disconnecting device for this UPS system with labels with the following text: “Isolate the Uninterruptible Power Supply (UPS) as instructed in this guide before working on circuit”

AC and/or DC voltage will always involve a potential risk of AC voltage at UPS output generated from either batteries or mains. To avoid equipment damage or personal injury, always assume that there may be voltage at UPS output. This system is equipped with an auto-start function. If activated, the system may start without warning. Refer to the “Programming” section of this guide for information on de-activation.

Indicates a hazard which, if not avoided, could result in damage to the product or other property.

Read and pay attention to this important information.

TEST BEFORE YOU TOUCH!

To reduce the risk of fire or electric shocks, install the UPS and external batteries in a temperature and humidity controlled indoor area, free of conductive contaminants. UPS batteries are high-current sources. Shorting battery terminals or DC terminals, DC busbars can cause severe arcing, equipment damage and injury. A short circuit can cause a battery to explode. Always wear protective clothing and eye protection and use insulated tools when working on batteries.

CAUTION!

This unit contains components sensitive to electrostatic discharge (ESD). If you do not follow the ESD procedures, you may cause severe damage to electronic components.

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Contents

1.0 Introduction 5

1.1 Tools and Equipment 5

2.0 Unpacking 6

3.0 Installation 8

3.1 Requirements on Site 8

3.1.1 Cabinet Dimensions H*xWxD - 1400xWx800 [mm]. Width as in below table: 8

3.2 Footprint 9

3.2.1 800mm Cabinet for 60-80kW UPS 9

4.0 External Connection 10

4.1 Connecting the UPS 10

4.2 System Integration Interface 12

4.2.1 Connections 13

4.3 Parallel Board 14

4.4 Communication Interface Board 17

4.4.1 Connections 17

4.5 Connecting of APC Silcon Tripel Chassis 18

4.6 APC Silcon Triple Chassis 19

4.6.1 Safety Warnings 19

4.6.2 Product Description 19

4.6.3 Installing Management Peripherals 20

4.6.4 Powering the APC Silcon Triple Chassis 22

4.6.5 Troubleshooting 23

4.6.6 Product Specifications 24

4.7 APC Silcon Battery Cabinets 27

4.7.1 APC Silcon Battery Cabinets 28

4.8 Battery Breaker Box/Fuse-box 30

4.8.1 Battery Breaker Box 31

4.8.2 Battery Breaker Box Connection Diagram 32

4.8.3 Fuse-box 33

4.8.4 Fuse-box Connection Diagram 34

4.8.5 UPS with External Battery in Battery Breaker Box/Fuse-box Configuration 35

5.0 Programming Parameters 36

5.1 Parameters 36

5.1.1 Programming Keys 37

5.1.2 Programming Example - Switch to Bypass Operation 38

5.2 System Configuration 38

5.2.1 Programming Example - Change Charge Voltage to 446 40

5.2.2 Programming Example - Change to Output Isolation Transformer available 41

5.3 Programming Parameters for Advanced Parallel Operation 42

5.3.1 Description of Settings 42

5.3.2 Programming example 43

5.4 Battery Monitor 43

5.4.1 Installation of new batteries 43

6.0 Options/Accessories 44

6.1 Service Bypass Panel for Single Operation 44

6.1.1 Wiring up UPS with SBP in TN-C-S Network 46

6.1.2 Wiring up UPS with SBP in TN-S Network 46

6.1.3 Operating The External Service Bypass Switch 47

6.2 Service Bypass Panel for Parallel Redundant Operation 49

6.2.1 Two Parallel Systems with Service Bypass Panel 50

6.2.2 Parallel/Redundant Operation with Service Bypass Panel and External Battery via MCCB 51

6.2.3 Operating External Service Bypass Switch for Parallel Systems 52

6.2.4 Isolating One UPS for Service/Maintenance 56

6.2.5 Switching Back to Normal Parallel/Redundant Operation 57

6.3 Intersystem Synchronization Unit 58

6.4 Relay Board 59

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6.4.1 Relay Board/Relay Functions 60

6.5 Weight Equalizer 62

6.6 Remote Display 64

6.6.1 Extension of Remote Display Communication Distance 64

6.6.2 Remote Display Installation 66

6.6.3 Remote Display Use 67

6.7 Isolation Transformer 68

6.7.1 Connecting Isolation Transformer 69

6.7.2 Wiring up UPS with External Yyn0 Isolation Transformer at Output 71

6.7.3 Wiring up UPS with External Yyn0 Isolation Transformer at Input 72

6.7.4 Wiring up UPS with External Optional Dzn0 Isolation Transformer at Input 73

6.7.5 Wiring up UPS with External Optional Dzn0 Isolation Transformer at Output 74

6.7.6 Wiring up UPS with External Optional Dyn11 Isolation Transformer at Input 75

7.0 System Specifications 76

7.1 Technical Data 76

7.2 Dimensions / Weight 76

8.0 Warranty 77

8.1 APC Silcon Series Limited Factory Warranty 77

9.0 Appendix 78

9.1 Table 1. Installation Planning Data 78

10.0 How to Contact APC 80

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Introduction

1.0 Introduction

Power regulation varies from country to country, and information given in this installation guide can therefore only be of a general nature. Electricians should therefore always refer to national and local electrical codes prior to installing the UPS system.

1.1 Tools and Equipment

CAUTION!

Heavy equipment. To prevent personal injury or equipment damage, take extreme care when handling and transporting UPS cabinet and equipment.

CAUTION!

Ensure that front doors are in place and that internal front cover is fastened by screws before attempting to lift or transport the system.

This section lists all tools and equipment required to install all UPS configurations. See also section 4.0 of this guide for further details on connection.

Tools:

• 10mm socket

• 13mm socket-deep

• 17mm socket

• 19mm socket-deep

• 19mm combo wrench

• Small flat head/regular screwdriver

• #3 philips screwdriver

• Compression lug crimping tool

• Knock-out set (for glands)

Equipment:

• Compression lugs for cable terminations

• Cable to Service Bypass Panel from system feeder

• Cable to UPS input from Service Bypass Panel

• Cable to Service Bypass Panel from UPS output

• Cable from Service Bypass Panel to customer distribution

• Cable to UPS input from external batteries/external Battery Breaker Box

(systems with external battery)

• Solid core, control cable to UPS from Service Bypass Panel

• Solid core, control cable to UPS from external batteries/external Battery

Breaker Box

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Unpacking

2.0 Unpacking

NOTICE!

Unless otherwise specified by the shipping company use a fork lift to unload equipment from pallet

1. To unpack UPS unit, remove top and bottom screws from side plates of packaging and lift up side plates

2. Verify compliance between type label on reverse side of front door and system ordered. Check input and

output voltage

3. Copy type label data to label copy below for easy identification of system

4. Use fork lift to transport system to installation site

5. Open UPS doors and unscrew metal straps mounted on front cover of UPS

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Copy of type label

Unpacking

PLEASE RECYCLE

The shipping materials for the APC Silcon UPS are recyclable. Please save them for later use or dispose of them appropriately.

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Installation

3.0 Installation

3.1 Requirements on Site

All system parts are accessible from front or top of UPS. Cable entries are accessible from bottom. A 1m free space on all sides should be allowed during installation. Once the system is installed it may be placed close to walls as long as free space is allowed for system doors to open. (Per applicable national and/or local codes.)

For ventilation and service purposes allow for free space of minimum 1m above the unit or per national and/or local codes and in front of UPS. Never install systems in direct sunlight.

NOTICE!

For reliability reasons do not stand on the UPS. keep the UPS cabinet surface free of any objects.

3.1.1 Cabinet Dimensions H*xWxD - 1400xWx800 [mm]. Width as in below table:

* H is 1500 mm for optional IP31 cabinets

Width

Without

Batteries

[mm]

UPS 1xBP I* 2xBP I* 3xBP I* 1xBP II** 1xBP III***

60kW 800 1x800 1x1000

80kW 800 1x800 1x1000

* BP I = Battery Pack I = 1 x 64 x 7 Ah batteries ** BP II = Battery Pack II = 1 x 64 x 24Ah batteries *** BP III = Battery Pack III = 1 x 64 x 38 Ah batteries

Cabinets

800 mm wide

600 mm wide 800 mm wide

Width With Built-in Batteries

[mm]

Width for Separate

Battery Cabinets

[mm]

1000 mm wide

1400 mm

Battery cabinet

for 1xBP ll

1400 mm

Battery cabinet

for 1xBP lll

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1400 mm

APC Isolation

Transformer module

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8 Installation Guide APC Silcon 60-80kW 400V UPS

3.2 Footprint

3.2.1 800mm Cabinet for 60-80kW UPS

Rear

Installation

Power cable entry

Com. cable entry

Front

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External Connection

4.0 External Connection

4.1 Connecting the UPS

CAUTION!

This UPS unit is an EN 50091-2 product and may cause radio interference in a domestic environment. Take preventive measures if necessary.

CAUTION!

At a switch mode load of 100% the neutral must be rated for 200% output phase current.

Ext. batteries

Input

Output

System Integration Interface

Parallel Controller

Communication Interface

Relay board (Optional)

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External Connection

UPS External

Input

Fuses* FM

[A]

380-415V

60kW 125 50 16 100 35

80kW 160 70 35 125 50

NOTICE!

Check correct phase rotation of mains input voltage!! Max. input/output cables: 120mm If there is no neutral input Dzn0 or Dyn11 input isolation transformer is required.

* DIN gL types

UPS External Alarm

Cable max.

[mm2]

60kW 2 25 125 50

External

Input Cable

[mm2]

380-415V

External System

Earth Cable

[mm2]**

External PE

Cable

[mm2]

Battery Breaker

Maximum

External

[A]

Output Fuses*

[A]

External Battery

External

Output

Cable

[mm2]

Cable

[mm2]

80kW 2 25 125 50

NOTICE!

All cable dimensions are recommended sizes only. Refer to local legal regulations.

PVC cables insulated to withstand ambient temperature of max. 30oC ** Must be rated as external PE cable if mains system is not supplying PE

NOTICE!

Install gland plate in bottom of unit.

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External Connection

4.2 System Integration Interface

NOTICE!

Consistent use of designations (Q001, Q002, Q003, H002, H003) in diagrams simplifies information exchange.

System Integration Interface (SII) is the control link between UPS and system main switches as shown in above diagram. The purpose of the SII is to ensure correct operation of switches without losing system output power.

Auxiliary contacts on the main switches transmit the SII board inputs. Lamps on Service Bypass Panel and Battery Breaker Box/Battery Cabinet indicate “green light” for operation of output switches.

SII board also integrates input facilities for emergency shut-down and temperature compensation of charge voltage for external battery (use with battery monitor). “Battery operation” and “Common fault” are two main SII board status relay signals.

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4.2.1 Connections

Blue Brown

External Connection

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External Connection

Terminal Blocks: X003/X004 (Anxiliary Contacts)

When switching Q001, Q002, Q010, Battery Breaker 1 or Battery Breaker 2 from “ON or 1” to “OFF or 0”, the anxiliary contact has to be open BEFORE the corresponding main contacts are opened. When switching Q001, Q002, Q010, Battery Breaker 1 or Battery Breaker 2 the opposite way from “OFF or 0” to “ON or 1”, the anxiliary contact has to close with a maximum delay of 0.5 seconds from the time the corresponding main contacts are closed.

• This type of auxillary contact is called a “late make” contact. (This also means that it will

“break early” when activated in opposite direction.)

• This auxillary contact is also called “NORMALLY OPEN” (NO), because the auxillary

contact will be open when the main contacts are open.

• Please note that the above term “NORMALLY” has nothing to do with NORMAL UPS

OPERATION MODE.

When switching Q003 from “OFF or 0” to “ON or 1”, the anxiliary contact has to open BEFORE the corresponding main contacts are closed. When switching Q003 the opposite way from “ON or 1” to “OFF or 0”, the auxillary contact has to close with a maximum delay of 0.5 seconds from the time when the corresponding main contacts are opened.

• This type of anxiliary contact is called an “early break” contact. (This also means that it will

“make late” when activated in the opposite direction.)

• The auxiliary contact is also called “NORMALLY CLOSED” (NC), because the auxiliary

contact will be closed when the main contacts are open.

• Please note that the above term “NORMALLY” has nothing to do with NORMAL UPS

OPERATION.

X005 (Output Relays)

Battery operation signals are received with a 30-second delay. This function is inactive during battery test. Common fault relay facility is programmable (standard factory setting: 10 sec.) See APC Silcon User Guide for details. Maximum nominal voltage on contact circuits is 277VAC. If two different phases are involved, maximum phase to neutral voltage should be below 160VAC. Please note that phase L1 is already present on the System Integration Interface board, supplied from the Service Bypass Panel. Therefore, if a phase is needed for alarm or signal purposes, Phase L1 should be used.

4.3 Parallel Board

CAUTION!

Control cables must be separated from AC and DC power cables.

Parallel Board

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External Connection

The built-in parallel board connects two or more UPS systems in parallel, either to obtain increased system reliability or to obtain higher output power. The parallel board also ensures correct load-sharing between paralled systems.

NOTICE!

For reliability reasons, APC recommends separate battery packs in redundant/parallel conigurations.

To prepare the UPS for parallel/redundant mode, disconnect all sources of AC and DC power supply to the UPS and connect the ribbon cable from the parallel board to the main controller board (the ribbon cable is delivered with the UPS).

CAUTION!

DO NOT connect ribbon cable between controller and parallel card in single configurations. Ribbon cable is for parallel operation only.

Complete the parallel system set-up by connecting the external control cables (see below). Follow the instructions in the “Programming Parameters for Advanced Parallel” section of this guide to execute necessary re-programming.

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External Connection

Parallel Board

X021:15-pin SUB-D female

X020:15-pin SUB-D female

External multicore cable with 14 wires + shield to other parallel units

UPS 1

External Control Cables

External multicore cable is equipped with 15-pin SUB-D plug at either end. Connect pin 1 to pin 1, and pin 2 to pin 2 etc. up to pin 15 - with the exception of pin 8, which is not to be connected. Shield is connected to plug cover at both ends. Terminals X020 and X021 for control cables located on parallel board. Connect X020 in UPS1 to X021 in UPS2, and connect X020 in UPS2 to X021 in UPS3 etc. Connect X020 in last UPS to X021 in UPS1.

Cable is delivered with the UPS.

Power Cables

To optimize load-sharing in parallel operation, external power circuits must be “symmetrical”: Power input and output cables to have same length and identical cross-sections.

UPS 2

UPS 3

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External Connection

4.4 Communication Interface Board

The 3-port ComInterface is used to establish an interaction between UPS and e.g. a computer system. Main purpose: To ensure a controlled computer shut-down in case of a mains supply failure.

4.4.1 Connections

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External Connection

4.5 Connecting of APC Silcon Tripel Chassis

The enclosed Triple Chassis must be connected to the serial port on the Communication Interface Board, and to the 24V supply (cables included).

APC Silcon Triple Chassis

For more information please refer to the following section.

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External Connection

4.6 APC Silcon Triple Chassis

The APC Silcon Triple Chassis (AP9604S) is an American Power Conversion (APC) external management peripheral that allows you to use monitoring and control management peripherals with your APC Silcon series UPS. The retrofit model (AP9604SR) is for use with Silcon series UPSs that are not equipped with a 24 VDC power port.

4.6.1 Safety Warnings

Use the APC Silcon Triple Chassis only in conjunction with an APC Silcon UPS.

Do not connect a computer to any APC Silcon Triple Chassis port using a straight-through extension cable. Use the communications cable provided with the APC Silcon Triple Chassis.

Connections using a cable made by any other manufacturer may cause damage or improper operation of the APC Silcon Triple Chassis, the UPS, or the computer.

4.6.2 Product Description

➊

➍

➋

➌

Monitoring port

To UPS port

4.6.2.1Monitoring Port

The Monitoring port has two functions:

• Connecting to a terminal for configuration of the chassis. For direct connection to the Monitoring port, you must use the Monitoring cable supplied with the chassis (APC P/N 940-0024C).

• Connecting to other APC external management peripherals in a daisy chain.

Status LED

Optional Power port

4.6.2.2To UPS Port

The “To UPS” port connects the chassis to the UPS, using the Silcon UPS cable (APC P/N 940-

0071). The cable connector plugs into a communications port on an APC Silcon UPS.

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External Connection

4.6.2.3LEDs

The APC Silcon Triple Chassis status LED provides important information concerning operation of the chassis. Refer to the table below for a description of the conditions indicated by the LED.

IF the LED is… THEN the Silcon Triple Chassis…

off is not receiving power.

flashing quickly (5 times per second)

has not been configured. See the APC Silcon Management Quick Start Guide provided with your chassis or the Web/SNMP Management Card Installation Guide on the CD for more information.

flashing slowly (1 time per second)

on is operating normally.

4.6.2.4Optional Power Input

With the Optional Power input, you can power the APC Silcon Triple Chassis from an external source, using a 24 VDC power adapter. A universal adapter (AP9505i) or a standard adapter (AP9505) can be purchased separately from APC.

4.6.3 Installing Management Peripherals

There are two basic types of APC management peripherals that work with the APC Silcon Triple Chassis:

• Management peripheral cards, which fit into external management peripherals that are equipped with a card slot.

• External management peripherals, which connect to the Monitoring (or Advanced) port of other external management peripherals.

NOTICE!

The name “Monitoring” port varies from product to product, but its purpose is the same – to replicate the UPS communications port.

is powered on but is not communicating with the UPS.

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External Connection

4.6.3.1Order of Management Peripheral Cards

Because UPS signals are passed between management peripherals, you must install management peripheral cards in the correct order for them to work together properly. The card slots are numbered 1 to 3, from left to right, as viewed from the rear of the chassis. The following table lists the management peripheral cards, their priority, and proper position.

Management Peripheral Card

Web/

SNMP Management

Card

Out-of-Band Management Card (Call-

UPS®II)

Interface Expander AP9607 Second lowest

Environmental Monitoring Card (Measure-

4.6.3.2Installing Management Peripheral Cards

To install management peripherals, perform the following steps.

1) Make sure that the chassis is powered off.

2) Install management peripheral cards into the housings on the rear of the chassis. See the instructions supplied with the cards and the table above.

3) If you are daisy-chaining other APC external management peripherals to the APC Silcon Triple Chassis: Connect the UPS cable (supplied with the management peripheral) to the Monitoring port of the chassis and to the “To UPS” port of the other management peripheral (Share-UPS, MasterSwitch, etc.). See “Daisy-chaining the APC Silcon Triple Chassis”.

4) Power the APC Silcon Triple Chassis and all external management peripherals.

UPS

II)

P/N Priority Position

AP9606 Highest

AP9608 Second-highest

AP9612T AP9612TH

Lowest

High-numbered slot

Low-numbered slot

NOTICE!

If your configuration requires additional power, connect a 24V AC/DC power adapter available from APC (part number AP9505 or AP9505i) for all models of Triple Chassis.

4.6.3.3Daisy-chaining the APC Silcon Triple Chassis

If you need more than the three card slots available with the APC Silcon Triple Chassis, or if you want to use other external management peripherals, you can daisy-chain external management peripherals together, provided that the total amperage of all installed management peripherals — cards and external — does not exceed the supplied amperage. (See “Determining Power Requirements:”).

NOTICE!

When daisy-chaining Triple Chassis units, you may need to use a power adapter.

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External Connection

To add card slots, you can daisy-chain the APC Silcon Triple Chassis with the standard Triple Chassis (AP9604) management peripheral, installing the APC Silcon Triple Chassis closer to the UPS.

4.6.4 Powering the APC Silcon Triple Chassis

The APC Silcon Triple Chassis supplies power to the installed management peripheral cards and to the Monitoring port, allowing you to power multiple management peripherals.

4.6.4.1AP9604S Power Considerations

The AP9604S model of the APC Silcon Triple Chassis receives its power from the UPS through the power connector of the Silcon UPS cable. If the total current required by all the installed management peripherals exceeds 500 mA, you must use a 24 VDC power adapter. To find out whether you need additional power, see “Determining power requirements”.

4.6.4.2Power Adapters

APC offers two models of 24 VDC power adapter.

• The standard adapter (AP9505) can provide an additional 400 mA.

• The universal adapter (AP9505i) can provide 850 mA.

4.6.4.3Using a Power Adapter

To use the adapter, plug it into a protected power outlet and into the Optional Power port of the APC Silcon Triple Chassis.

NOTICE!

If the power adapter loses power because of a UPS shutdown, its attached management peripherals may not operate properly, thus adversely affecting the UPS and its protected equipment.

4.6.4.4AP9604SR Power Considerations

The AP9604SR model receives its power from the UPS through the supplied 24 VDC universal adapter. The total current required by your management peripherals must not exceed the 850 mA limit of the power adapter. See ““Determining power requirements”.

4.6.4.5Determining Power Requirements:

To determine the total amount of current required by your management peripherals, add the individual current requirements for each management peripheral to be installed with the APC Silcon Triple Chassis to the current requirements of the chassis itself. Refer to this table

Part # Management Peripheral Draw (mA)

AP9207 Share-UPS 8-port Interface Expander 65

AP9600 Expansion Chassis 30

AP9604 Triple Chassis 20

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External Connection

AP9604S[R] APC Silcon Triple Chassis 90

AP9606 Web/SNMP Management Card 110

AP9607 Interface Expander 45

AP9608 Out-of-Band Management Card

(Call-

UPS II)

AP9612 Environmental Monitoring Card (Measure-UPSII) 60

AP9825i Isolated Extension Cable 50

AP9830 Remote Power-Off Device 35

4.6.5 Troubleshooting

The following table shows the solution to common problems with the operation of the Triple Chassis

Problem Possible Cause Solution

See “Powering the APC Silcon Triple Chassis”, and verify that you are not exceeding current requirements.

Configure the Silcon Triple Chassis. See the APC Silcon Management Quick Start Guide provided with your chassis or the Web/SNMP Management Card Installation Guide on the CD for more information.

Status LED is off

Status LED is flashing quickly

The chassis is not receiving adequate power.

The chassis has not been configured.

Status LED is flashing slowly

Attached management peripheral cannot identify UPS model or nominal output voltage.

4.6.5.1If Problems Persist

For problems not covered in the troubleshooting chart or for persistent problems, follow this procedure:

1) Note the serial number and date of purchase of the APC Silcon Triple Chassis. Contact APC Customer Support at the phone number or address that is listed in this manual.

2) Be prepared to provide a description of the problem. A technician will help solve the problem over the phone, if possible, or will give you a return material authorization (RMA) number.

3) If the APC Silcon Triple Chassis is under warranty, repairs are free of charge. If the warranty has expired, there will be a nominal charge for repair.

The chassis is not communicating with the UPS.

The management peripheral firmware does not support 3-phase UPSs.

Verify that the supplied UPS cable is properly connected to the Triple Chassis and to a communications port on the UPS.

You may be able to upgrade the firmware of the management peripheral. Call APC Customer Support.

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External Connection

4) Pack the APC Silcon Triple Chassis carefully in its original packaging, if possible. Do not use polystyrene beads for packing. Damage sustained in transit is not covered under the warranty. Enclose a letter in the package with your name, address, RMA number, a copy of the sales receipt, daytime phone number, and payment (if applicable).

5) Mark the RMA number clearly on the outside of the shipping carton. The factory will not accept any materials without this marking.

6) Return the Triple Chassis by insured, prepaid carrier to the address given to you by APC Customer Support.

4.6.6 Product Specifications

4.6.6.1Monitoring Port Pin Assignments

The Monitoring port is a 9-pin communications port. The port operates with no flow control at a rate of 2400 baud. The data format is 8 data bits with 1 start bit, 1 stop bit, and no parity. When the Triple Chassis operates with simple signalling, the following limitations and capabilities apply to the Monitoring port:

• Pins 3, 5, and 6 are open collector outputs which must be pulled up to a common referenced supply no greater than +40 VDC. The transistors are capable of a noninductive load of 25 mA. Use only Pin 4 as the common.

• The output at Pin 2 generates a low-to-high RS-232 level when the device is signalling an On Battery condition. The pin is normally at a low RS-232 level.

• The UPS is signalled to shut down when a high RS-232 level is applied to Pin 1 for

4.5 seconds. Shutdown is also dependent on the UPS status.

When the Triple Chassis operates with advanced signalling, the following limitations and capabilities apply to the Monitoring port:

• Pin 7 is unassigned.

• DC operating voltage is available on Pin 8. This voltage may be from the UPS or from an external adapter, whichever is greater.

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