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Emerson
Static Transfer Switch
user manual
Channel PRB Notes
Models:
Static Transfer Switch
1
149
152
152
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152 pages
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Specifications
Install
Hardware Torque Chart
Audible Alarm
Password
Alarm and Faults
Symbol
Power and Control Wiring
Dimension
Maintenance
Page 149
Image 149
Maintenance
Channel 8:
Channel 9:
Channel 10:
PRB Notes:
141
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Page 150
Page 149
Image 149
Page 148
Page 150
Contents
Liebert Static Transfer Switch
Page
Table of Contents
Theory of Operation
Alarm and Faults
Liebert STS2 Touch Screen Display
Specifications
Communication Interfaces
System Components
Event Message Help Text Maintenance
Figures
Tables
Important Safety Instructions
Overview of Manual
Safety Precautions
Unpacking and Inspections
External Inspections
Unloading and Handling
Unit Preparation
Internal Inspections
Handling Considerations
Heat Output
Recommended Minimum Service Clearances
Operating Environment
Location Considerations
Recommended derating for high altitude operation
Altitude
Leveling and Anchoring the Static Switch Using Floor Stand
Leveling of the Static Switch Without Anchoring
Leveling and Anchoring the Unit to the Floor
Locating the Liebert STS2
Power and Control Wiring
Input And Output Power Connections
Rating Max. number and size
Input Junction Box Installation-Optional
Input/output conduit plate specifications
Input junction box terminal wire size range
Input junction box dimensions
Length Width Height Switch Rating Inches mm
Switch Rating Power and Ground Lug Wire Range
System Grounding
Control Wiring Connections
Source MICB1 MICB2 Isolation Transformer
CB1 STS1 STS2 CB2
Power Supply
Remote Source Selection Wiring
Remote source selection terminal block
Contact Connection
Optimized Transfer
Programmable Relay Board
Options
Programmable relay board pinout
Liebert IntelliSlot Web/485 Card With Adapter
Input Contact Isolator Board
Comms Board
LED Display
Key Lockout Switch
Remote Source Selection
Redundant Output Breaker
Seismic Floor Stand
Input Junction Boxes and Cables
Seismic Floor Anchors
Outline drawing 100 250 amp Liebert STS2
Installation Drawings
Rev
Outline drawing 800 1000 amp Liebert STS2
PS211101 Rev
PS211401
PS211801
Seismic anchor
Seismic anchor drawing 400 600 amp Liebert STS2
System Seismic ANCHORING, Figure
Front
Drawing 100 250 amp Liebert STS2 with single output breaker
Electrical field connections
Rev
Ground BUS INPUT/OUTPUT BUS Front View Right Side View
Drawing 400 600 amp Liebert STS2 with single output breaker
PS212401
Drawing 800 1000 amp Liebert STS2 with single output
Breaker
PS212801
Liebert STS2 non-automatic circuit breaker schedule
See Option Location Detail
Control connection location diagram 100 600 amp Liebert STS2
Front View with Front Door Removed Option Location Detail
Control Wiring
See Note
J72
J71
J73
J74
Table J51
Control wiring for the input contact isolator board option
02-810015-XX
DB-9J3
TB3 TB3
TXD RXD GND
Control wiring for the RS-232 port
Input Junction BOX
ColorLCD Load touch screendisplay
Mimic
Description
Symbol
Installation drawing, seismic floor stand 100-250A
Stand
Installation
PS215002 Rev
PS215003 Rev
Height Table
Hardware Torque Chart
PS216001 Rev
PS216002 Rev
PS216003 Rev
Installation drawing, seismic floor stand 800-1000A
Drawing
800
Detail a
Front Right Isometric View Rear Right Isometric View
Right Side View
Right
Side View
Front View
View
Redundancy
System Description
Introduction to Liebert STS2 Operations
Modes of Operation
Bypass
Operator Controls
Theory of Operation
General Description
Detailed Component Description
Firmware
Hardware
Circuit Breakers
SCRs
6 RS-232 Port
Audible Alarm
Logic Modules
Operating Instructions for the Touch Screen Interface
Normal System Turn-On
Manual Transfer / Preferred Source Selection
Settings on
To manually select the preferred source
Maintenance Bypass
Enabling Remote Source Selection
Touch Screen Viewing Slot for the Source 1 Gate Drive Board
Viewing Slot for the Source 2 Gate Drive Board
To return to the normal mode
Bypass Procedures for Source
To bypass the switch for Source
Shutdown in Maintenance Bypass Mode
Shutdown in Static Transfer Switch Mode
To return to normal mode
Normal System Shutdown
Event Mask
Alarm and Faults
History Log
Event and History Logs
Event Log
List of Messages
Alarm Notes
Event messages
Alarm Message Description/Cause Action
See Configuring the Input Contact Isolator Settings on
Communication Interfaces
Using the RS-232 Port
Keys Function
Connecting and Using a Terminal
Terminal commands
Groups Parameter
Configuring the Liebert STS2 via the Terminal
Item Parameter
UPMDR?
Value types
Group settings and values
Value Parameter
Event Mask
User
Comms Options
Setting Bitpacked Options with the Terminal
Options1
Non-Critical Option Enabling
Critical Option Enabling
Binary-hexadecimal conversions
Hex
Setting Event Masks with the Terminal
Putting the Terminal Command Together
Examples of Event Mask Settings
Liebert STS2 Touch Screen Display
Display Overview
Backspace
Menu Overview
Using the Password
Using the Optional Key Lockout Switch
To set or reset the password
Changes disabled Changes enabled
Event Controls
Mimic Display
Event Display
Menu bar
To set the event masks
User Settings
To access the User Settings dialog box
Source Set Points
User settings dialog box
Sepoint parameters
To configure the setpoints for each source
Button Range Default Comments
Liebert STS2 Touch Screen Display
To access the System Settings menu
System Settings
Comm Options
Option buttons
To configure the modem
Configuring the Modem
Configuring the Input Contact Isolator Settings
Configuring Pager Support
Input contact isolator dialog box
To configure the Input Contact Isolator relays
Relay Setting Definition
Configuring the Programmable Relay Board Settings
Standard settings for programmable relays
Programmable relay board dialog box
Saving Your Communications Configurations
Liebert SiteScan Configuration
System Options
Dual Output Breaker
Shunt
Pole Transfer Switch
Wye Output Transformer
Remote Source Selection
To use the Event Log
Logs
Cleaning the LCD Touch Screen
Front Panel Controls
LEDs and Buttons and Key Lockout Switch
Operating the Liebert STS2 LED Display
LED and push button description
LED and Push Button Description
Description Action
Cause. See 12.0 Communication Interfaces for PC terminal
Operations
Key Lockout Switch
Event Controls
Normal System Turn On
Manual Transfer / Preferred Source Selection
107
If transfer to Source 2 is not desired
Maintenance Bypass
If transfer to Source 1 is not desired
Normal System Shutdown
When the Static Transfer Switch is operating on bypass
Specifications
System Configuration
Frequency
Input/Output Voltage
Electrical Requirements
Grounding
Input Surge Suppression
Response Time
Frame and Enclosure
System Components
Casters, Leveling and Seismic Anchoring
Cooling
Cable Entrance
Access
Doors
Color Graphical Display or LED Display
15.2.9 RS-232 Port
Pin Signal Name Function / Comments
Terminal Port Connections
MTA plug pinout
Parameter Setting
RS-232 settings
15.2.11 RS-232 Interface Parameters
Fuseless Design
S1 SCR Short
Event Message Help Text
S2 SCR Short
S1 SCR Open
S2 SCR Open
119
120
S1 SCR Sense Fail
S1 Volt Sense Fail
S2 Volt Sense Fail
S1 Curr Sense Fail
S2 SCR Sense Fail
S2 Curr Sense Fail
S1 Gate Drive Fail
S2 Gate Drive Fail
Heat Sink Overtemp
S1 OV
S1 UV
S1 UV RMS
S2 UV
S1 OF/UF
S1 Fail
S2 UF/OF
S2 UV RMS
S2 OV
S2 Fail
S2 I-PEAK
S1 I-PEAK
130
CB5 S1 BYP Closed
132
133
134
135
136
137
Maintenance
Testing the Liebert STS2
Proper Tightening of Nuts and Bolts
Changing the Air Filter
Support Information
Channel
Programmable Relay Board Settings Record
Channel PRB Notes
Input Contact Isolator Settings Record
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