For Business-Critical Continuity
Liebert Static Transfer Switch
AC Power
Page
1.0 SAFETY PRECAUTIONS 2.0 UNPACKING AND INSPECTIONS
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS OVERVIEW OF MANUAL
9.0 THEORY OF OPERATION
7.0 INSTALLATION DRAWINGS 8.0 INTRODUCTION TO LIEBERT STS2 OPERATIONS
11.0 ALARM AND FAULTS
13.0 LIEBERT STS2 TOUCH SCREEN DISPLAY
15.0 SPECIFICATIONS
12.0 COMMUNICATION INTERFACES
16.0 EVENT MESSAGE HELP TEXT 17.0 MAINTENANCE
SUPPORT INFORMATION PROGRAMMABLE RELAY BOARD SETTINGS RECORD
INPUT CONTACT ISOLATOR SETTINGS RECORD
17.2 Testing the Liebert STS2 17.3 Changing the Air Filter
FIGURES
TABLES
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
OVERVIEW OF MANUAL
1.0 SAFETY PRECAUTIONS
Read this entire manual before installing and operating the unit
2.0 UNPACKING AND INSPECTIONS
2.1 External Inspections
2.2 Unloading and Handling
2.2.2 Unit Preparation
2.3 Internal Inspections
2.2.1 Handling Considerations
3.1 Recommended Minimum Service Clearances
3.2 Heat Output
3.3 Operating Environment
3.0 LOCATION CONSIDERATIONS
3.4 Altitude
Figure 1 Recommended derating for high altitude operation
4.2 Leveling of the Static Switch Without Anchoring
4.3 Leveling and Anchoring the Static Switch Using Floor Stand
4.1 Leveling and Anchoring the Unit to the Floor
4.0 LOCATING THE LIEBERT STS2
5.1 Input And Output Power Connections
5.0 POWER AND CONTROL WIRING
Input/output conduit plate specifications
5.2 Input Junction Box Installation-Optional
Figure 3 Typical static transfer switch one-line diagram
Input junction box dimensions
Input junction box terminal wire size range
Power and Control Wiring
#6 to #2/0 AWG
5.4 Control Wiring Connections
5.3 System Grounding
Remote source selection terminal block
5.5 Remote Source Selection Wiring
5.6 Power Supply
6.1 Programmable Relay Board
6.2 Optimized Transfer
6.0 OPTIONS
Programmable relay board pinout
6.3 Distribution Cabinet With I-Line Panelboard-100-600A Units Only
6.4 Input Contact Isolator Board
6.5 Comms Board
6.6 Liebert IntelliSlot Web/485 Card With Adapter
6.9 Key Lockout Switch
6.7 LED Display
6.8 Remote Source Selection
6.10 Redundant Output Breaker
6.13 Seismic Floor Stand
6.11 Input Junction Boxes and Cables
6.12 Seismic Floor Anchors
7.0 INSTALLATION DRAWINGS
Figure 5 Outline drawing 100 - 250 amp Liebert STS2
PS211400
Installation Drawings
Figure 6 Outline drawing 400 - 600 amp Liebert STS2
PS211800
Installation Drawings
Figure 7 Outline drawing 800 - 1000 amp Liebert STS2
PS211101 Rev
Installation Drawings
PS211401
Installation Drawings
PS211801
Installation Drawings
Figure 11 Seismic anchor
FRONT
SYSTEM SEISMIC ANCHORING, FIGURE
Installation Drawings
FRONT
SYSTEM SEISMIC ANCHORING, FIGURE
Figure 12 Seismic anchor drawing 400 - 600 amp Liebert STS2
Installation Drawings
Figure 13 Seismic anchor drawing 800 - 1000 amp Liebert STS2
FRONT
SYSTEM SEISMIC ANCHORING, FIGURE
ONE-LINE DIAGRAM
Installation Drawings
FRONT VIEW
Figure 14 Electrical field connections
Installation Drawings
PS212101
ONE-LINE DIAGRAM SECTION A-A
Installation Drawings
FRONT VIEW
drawing 400 - 600 amp Liebert STS2 with single output breaker
Installation Drawings
PS212401
breaker
Drawings
Installation Drawings
PS212801
Installation Drawings
Figure 20 Liebert STS2 non-automatic circuit breaker schedule
CONTROL WIRING
Installation Drawings
PS213000 Rev
FRONT VIEW WITH FRONT DOOR REMOVED
CONTROL WIRING
Installation Drawings
PS213800
FRONT VIEW WITH FRONT DOOR REMOVED
See Note
Page
Figure 25 Control wiring for the input contact isolator board option
Installation Drawings
“NO CUSTOMER CONNECTION”
J51 INPUT CONTACT ISOLATOR BOARD 02-810012-XXPS213002
PS213003
Figure 26 Control wiring for comms board
COMMS BOARD
TB3 TB3
TB2 DB-9J3
1. RS-232 communication through DB9 connector
Front View
PS213006 Rev
DB9 Connector Detail A
Power Terminal Block
Customer Connection of Input Power Racewayby others
3-Phase, 3-Wire Plus Ground
Location of Factory-Supplied Input Power Cable Assembly
ALARM
Installation Drawings
RESET
MIMIC
PS211002 Rev
Installation Drawings
Figure 31 LED display
PS215000 REV. NO
Figure 32 Installation drawing, seismic floor stand 100-250A
Installation Drawings
stand
Installation Drawings
PS215001 Rev
Figure 34 Installation drawing, seismic floor stand 100-250A
Installation Drawings
FRONT LEFT ISOMETRIC VIEW
RIGHT SIDE VIEW
PS215003 Rev
Figure 35 Installation drawing, seismic floor stand 100-250A
Installation Drawings
HARDWARE TORQUE CHART
Installation
PS216000 Rev.0
HEIGHT TABLE
PS216001 Rev
Figure 37 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216002 Rev
Figure 38 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS216003 Rev
Figure 39 Installation drawing, seismic floor stand 400-600A
Installation Drawings
PS217000 Rev
Figure 40 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
drawing
Installation Drawings
PS217001 Rev
PS217002 Rev
Figure 42 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
PS217003 Rev
Figure 43 Installation drawing, seismic floor stand 800-1000A
Installation Drawings
8.1.1 Redundancy
8.1 System Description
8.0 INTRODUCTION TO LIEBERT STS2 OPERATIONS
8.1.3 Factory Backup and Service Assistance
8.2 Modes of Operation
8.1.2 Reliability and Agency Requirements
8.2.1 Normal Preferred Source
Figure 44 Liebert STS2 touch screen display
8.3 Operator Controls
8.2.4 Bypass
9.1.1 Liebert STS2 Static Transfer Switch
9.1 General Description
9.0 THEORY OF OPERATION
9.1.2 Source Transfer
9.2 Detailed Component Description
9.1.4 Emergency Transfer
9.1.5 Load Current Transfer Inhibit
9.1.6 SCR Failure
Hardware
Firmware
9.2.2 Circuit Breakers
9.2.3 SCRs
9.2.6 RS-232 Port
9.2.5 Audible Alarm
9.2.4 Logic Modules
10.0 OPERATING INSTRUCTIONS FOR THE TOUCH SCREEN INTERFACE
10.1 Normal System Turn-On
Figure 45 Liebert STS2 touch screen display
Figure 46 Source transfer screen
Settings on page
10.2 Manual Transfer / Preferred Source Selection
To manually select the preferred source
10.4 Maintenance Bypass
10.3 Enabling Remote Source Selection
Figure 47 Gate board viewing slot locations
To return to the normal mode
10.4.1 Bypass Procedures for Source
To bypass the switch for Source
10.4.2 Bypass Procedures for Source
10.5.1 Shutdown in Static Transfer Switch Mode
10.5.2 Shutdown in Maintenance Bypass Mode
10.5 Normal System Shutdown
11.0 ALARM AND FAULTS
11.1 Event Mask
11.2.2 History Log
11.2 Event and History Logs
11.2.1 Event Log
11.3 Alarm Notes
11.4 List of Messages
Alarm and Faults
Alarm Message
Event messages
Description/Cause
Alarm and Faults
Event messages continued
12.1 Using the RS-232 Port
12.0 COMMUNICATION INTERFACES
12.1.1 Connecting and Using a Terminal
Terminal commands
12.1.2 Configuring the Liebert STS2 via the Terminal
Terminal commands
Groups Parameter
Item Parameter
Table 10 Value types
Table 11 Group settings and values
Value Parameter
Table 11 Group settings and values continued
Communication Interfaces
12.1.3 Setting Bitpacked Options with the Terminal
Options1
Comms Options
Comms Options
Table 12 Binary-hexadecimal conversions
Critical Option Enabling
Non-Critical Option Enabling
Putting the Terminal Command Together
12.1.4 Setting Event Masks with the Terminal
SPT 2
NO spaces are placed between each mask listed above
Examples of Event Mask Settings
Figure 48 Liebert STS2 touch screen display
13.1 Display Overview
13.0 LIEBERT STS2 TOUCH SCREEN DISPLAY
13.2 Menu Overview
Figure 49 Menus
Click OK to save the data that you have entered
Figure 50 Keyboard and keypad displays
Using the Optional Key Lockout Switch
Using the Password
Figure 51 Key lockout switch
To set or reset the password
13.6.1 Configuration Menu
13.3 Mimic Display
13.4 Event Controls
13.5 Event Display
User Settings
To access the User Settings dialog box
To set the event masks
Figure 52 Event mask dialog box
Figure 53 User settings dialog box
Source Set Points
Table 13 Sepoint parameters
To configure the setpoints for each source
Figure 54 Source setpoints
8. Select FREQUENCY TRIP POINT. A keypad is displayed
System Settings
To access the System Settings menu
Comm Options
Comm Options System Options System ID
Figure 56 Modem dialog box
Configuring the Modem
To configure the modem
Configuring Pager Support
Configuring the Input Contact Isolator Settings
To configure the Input Contact Isolator relays
Figure 57 Input contact isolator dialog box
To configure your programmable relay boards for user defined settings
Configuring the Programmable Relay Board Settings
Table 14 Standard settings for programmable relays
Configuring the Liebert IntelliSlot Web/485 Card With Adapter
Figure 58 Programmable relay board dialog box
Liebert SiteScan Configuration
Saving Your Communications Configurations
To save you communications configuration settings
System Options
4-Pole Transfer Switch
If the Liebert STS2 is connected to a PDU configured as a Wye
Shunt
Wye Output Transformer
13.6.2 Logs
Event Log
History Log
Figure 60 Event log
13.7 Cleaning the LCD Touch Screen
13.6.4 Startup Procedure
13.6.5 Bypass Procedure
13.6.3 Source Transfers
14.1 LEDs and Buttons and Key Lockout Switch
PS211002 Rev
14.0 OPERATING THE LIEBERT STS2 LED DISPLAY
14.1.1 Front Panel Controls
Operating the Liebert STS2 LED Display
14.1.2 LED and Push Button Description
Table 15 LED and push button description
14.1.4 Key Lockout Switch
Figure 63 Key lockout switch
14.2 Operations
14.1.3 Event Controls
14.2.2 Manual Transfer / Preferred Source Selection
To manually select the preferred source
14.2.3 Maintenance Bypass
Bypass Procedures for Source
If transfer to Source 2 is not desired
To return to the normal mode
To return to normal mode
Bypass Procedures for Source
If transfer to Source 1 is not desired
Shutdown in Static Transfer Switch Mode
Shutdown in Maintenance Bypass Mode
When the Static Transfer Switch is operating on bypass
14.2.4 Normal System Shutdown
15.1 System Configuration
15.0 SPECIFICATIONS
15.1.1 Frequency
15.1.2 Input/Output Voltage
15.1.4 Grounding
15.1.5 Electrical Requirements
15.1.6 Input Surge Suppression
15.1.7 Response Time
15.2 System Components
15.2.1 Frame and Enclosure
15.2.2 Casters, Leveling and Seismic Anchoring
15.2.3 Cooling
15.2.4 Access
15.2.5 Circuit Breakers
15.2.6 Cable Entrance
15.2.7 Doors
15.2.9 RS-232 Port
15.2.10 Terminal Port Connections
Table 21 MTA plug pinout
DB9 pinout
15.2.12 Maintenance Bypass
Table 23 RS-232 settings
15.2.11 RS-232 Interface Parameters
15.2.13 Fuseless Design
16.0 EVENT MESSAGE HELP TEXT
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
Event Message Help Text
17.2 Testing the Liebert STS2
17.0 MAINTENANCE
17.1 Proper Tightening of Nuts and Bolts
17.3 Changing the Air Filter
SUPPORT INFORMATION
PROGRAMMABLE RELAY BOARD SETTINGS RECORD
Channel Channel Channel Channel Channel Channel Channel
Maintenance
Channel Channel Channel PRB Notes
INPUT CONTACT ISOLATOR SETTINGS RECORD
Channel Channel Channel Channel Channel Channel Channel Channel
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Ensuring The High Availability
0f Mission-Critical Data And Applications
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