Download What is a Solid State Relay? - Rockwell Automation Knowledgebase

New / Expanded Line
of Solid State Relays
and Heat Sinks
Bryan Knapp
Product Manager
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
Discussion Topics
1. What is a Solid State Relay?
2. When would an SSR be used?
3. NEW 700-SH SSRs
4. Potential SSR Applications
5. Competition
6. Summary
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
2
What is a Solid State Relay?
• A solid-state relay is a load switching device like an electromechanical relay
(EMR). However an SSR uses an electronic component such as a triac or
thyristor for switching AC loads and a power transistor for switching DC
Loads instead of a coil and contacts like an electromechanical relay.
Electromechanical Relay (EMR) Operation
Input
Current
Coil
Transfer to
Magnetic Field
Armature
Generate contact
Movement
Contacts
Close
SSR Operation
Input
Current
LED
Voltage generated internally
by light reception
Activation of
Triac/Transistor
Trigger
Circuit
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
Output
Device
3
When would an SSR be used?
• When high frequency On/Off switching capability is required that
exceeds the specification of other switching devices
• When the operating life requirements exceed that of an electromechanical switching device
• When it is necessary to withstand high levels of shock and vibration
beyond the specifications of other switching devices
• When it is necessary to switch a load via a SPST-NO device; at current
values of up to 100 Amps
Estimated Global Market Size - $300-350 Million for SSRs RA Offers
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
4
NEW 700-SH SSRs
• 10A, 25A, 50A, 75A and 100A (resistive) Continuous Load
(output) Current with Heat Sink
• Four different Load Voltage Range Options
• Five different Control Input Voltage Options
• DC load and Phase-angle control available
• LED Indicator for Input/Logic On/Off Status Monitoring
• Protective Cover for Added Safety (except DC load version)
Available
Sept. 2007
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
5
NEW 700-SH SSRs
• Three static and Two Active Heat Sinks are
available for Heat Dissipation
• Conductive Grease and Screws included with
Heat Sinks
Heat Dissipation is CRITICAL for ALL SSR Applications
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
6
Potential SSR Applications
• High Frequency Switching Applications
– Packaging machines
– Plastic molding and injection machines
– Semiconductor forming machines
• High Shock & Vibration Resistance Applications
– Steel mill stamping & forming
– Automotive stamping presses
– Lumber mill sorting and cutting
• High Current Switching Applications
– Industrial ovens (example – with temperature controllers)
– Flow solder machines
These are not the only applications but are examples which can assist
you in identifying areas to direct your efforts.
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
7
Potential SSR Applications
• Types of applications which SSRs would NOT be the
best alternative
• Minimum Output/Load Switching Current not Available
• Susceptibility to Excessive Output/Load Current Spikes
• Load Sensitive to Leakage Current
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
8
Competition
• Main competitors
– Crydom
• Huge product selection – market leader in USA
– Crouzet
• Significant in Western Europe
– Teledyne
• Mainly found in USA
– Omron
• Significant in Asia-Pacific
• Others
–
–
–
–
Continental / Eurotherm
Magnecraft
Idec
Many small companies from Asia-Pacific
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
9
Summary
• The available SSR market is large
– Approximately 15% the size of GP relays globally and GROWING
• Three main applications
– High frequency switching
– High shock and vibration resistance
– High current switching
• Globally competitive product line in both features and pricing
• Commercial documentation
–
–
–
–
–
Product Profile 700-PP025_-EN-P (on CD)
On-line catalog (beginning Sept. 2007)
RAISE – Product Selection Toolbox (beginning Q1FY08)
Cobra brochure 700-BR020_-EN-P (on CD, to be updated Q1FY08)
Application Guide 700-AT001_-EN-P (to be updated Q1FY08)
• Any Questions
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.
10
Thank you for
participating!
Copyright © 2007 Rockwell Automation, Inc. All rights reserved.