Transcript SAFESERIES SIL Relay Presentation

SAFESERIES
SIL relays
Functional safety – what is it?
Process Plant and machinery can lead to dangerous failures and malfunctions of risk to people,
environment and property values. These risks must be evaluated on a risk analysis by plant
operators. Depending on the risk resulting from this action to reduce risk by avoiding errors, error
detection and error control are derived. The main goal is to ensure that plant and machinery can be
operated safely
example:
In 1984-12-03 thousands of people die in the largest chemical accident in
Bhopal / India due to technical problems in the U.S. chemical company
Union Carbide Corporation.
Several tons of toxic substances leaked into the atmosphere.
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Application
 Emergency shutdown of plant items in the process industry, due to the risk
analysis
- Additional overfill prevention of oil tanks
- Safe switch-off of motors and valves, stopping supply of oil and gas
- Safe shutdown of process parts in the chemical industry.
 The SIL3 – Relay is not designed for protection of humans, according to standards
EN ISO 13849-1 or EN 62061 (machinery safety)!
SAFESERIES – Where are they used?
 Safety Instrumented Systems (SIS), also called....
 Safety Shut Down systems (SSDs), or
 Emergency Shut Down (ESD) Systems
.....in the Process Industry
MS2 - Projektfreigabe: 806122 - SIL3-Relais-Varianten; 07.09.2011; P. Töpfer
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SAFESERIES – Where they fit….
 Interface between Safety Controller and Field Device
- Safety Controller is
working with 24VDC
- Field Device work with
230V / 380 VAC
- Interface relay required for
amplification
- Interface relay must fulfill
SIL 3 level
MS2 - Projektfreigabe: 806122 - SIL3-Relais-Varianten; 07.09.2011; P. Töpfer
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Application: overfill prevention - oil tank
Example:
Additional overfill prevention of an oil-tank
- In case of overfill – emergency shutdown
- safe valve switch off
(de-energise to safe)
- monitoring valve mode (on / off)
- feedback status valve to
DCS system
Field signal / monitoring signal
Safety related signal
MS2 - Projektfreigabe: 806122 - SIL3-Relais-Varianten; 07.09.2011; P. Töpfer
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SAFESERIES – typical functionality
 De-energize-to-Safe to switch valves and tubes
-Device is always “ON” and in ESD case or other
errors, e.g. power down, the relay release and
contact circuit open
- To ensure the opening/breaking of the output,
three relays are serial connected
- Some customer requires remote contact from
the field, therefore a version with Multi-voltage
Remote contact is available
- For corrosive atmosphere, a version with G3coating is available
SafeSeries Models
Descriptor
Item No.
Function
SCS 24VDC P1 SIL3 DS
1303890000
1 ch, de-energize to safe
SCS 24VDC P1 SIL3 DSM
1303760000
1 ch with monitoring
SCS 24VDC P1 SIL3 DS MG3
1304040000
1 ch with monitoring and G3 coating
SCS 24VDC P2 SIL3 DS ES
1319270000
2 ch with DS & ES output & test input
SCS 24VDC P2 SIL3 ES
1319280000
2 ch for burner control
 Introduction SIL3-Relay 1
- SIL3 Relay with wide voltage input in the monitoring circuit
- 1303760000 SCS 24VDC P1SIL3DS M
- characteristics:
• Low demand mode – application emergency shutdown
• High demand mode - switching of motors and valves
- Monitoring circuit with wide voltage input: 24…230VUC
- Consumption current: 45mA @ 24V DC (loop power monitoring, spec. DCS Yokogawa)
- Additional auxiliary contact NC
- Immune against test impulses from the DCS
- approvals: CE, UL in preparation (new demands)
- certification:
• SIL3 EN 61508 TÜV NORD “safety approved”
31.01.2012
 Introduction SIL3-Relay 2:
- SIL3 Relay without monitoring circuit
- 1303890000 SCS 24VDC P1SIL3DS
- characteristics:
• Low demand mode – application emergency shutdown
• High demand mode - application switching of motors and valves
- Consumption current: 45mA @ 24V DC (loop power monitoring, spec. DCS Yokogawa)
- Additional auxiliary contact NC
- Immune against test impulses from the DCS
- approvals: CE, UL in preparation (new demands)
- certification:
• SIL3 EN 61508 TÜV NORD “safety approved”
31.01.2012
 New range of SIL3 – relays SAFESERIES
Immune against test impulses from
the DCS.
Comfortable replacement of the fuse.
24…230V UC Monitor IN for
detecting of high voltage DC
signals in backup systems.
Certification by internationally
recognized TUV group.
Target customers
o DCS companies
o Honeywell Control Systems, ABB Process Automation,
Yokogawa
o Local Business Partners for the above
o Safety systems specialists
o Triconex (were part of Invensys, - now Schneider)
o ICS Triplex (part of Rockwell)
o HIMA
o Turbine control systems suppliers
o Burner management systems suppliers
o Petro-Chemical production / storage / distribution – end users