Yokogawa SCP461-11S1 Safety Processor Module

Technical Specifications

Model:SCP461-11S1

Brand:Yokogawa

CPU:High-performance 32-bit RISC real-time safety processor,Dual MPU cross-comparison safety architecture

Memory:512MB ECC RAM,512MB Flash memory

Safety certification:TÜV SIL3 (IEC61508)

Control cycle:5ms ~10s configurable

Max safety I/O points:16384

Communication port:Dual 1Gbps Vnet/IP Ethernet ports,RS232C service port,USB maintenance port

Redundancy:1:1 hot standby redundant support,bumpless switchover

Power supply:24V DC,20.4~26.4V DC

Max power consumption:22W

Suffix -11S1:Special variant of SCP461-11 for ProSafe-RS safety station

Operating temperature:0~+50℃

Relative humidity:5~95% non-condensing

Dimension:32.8mm149mm199.5mm

Weight:0.70kg

Certification:CE,UL,TÜV SIL3

System compatibility

Designed for Yokogawa ProSafe-RS safety instrumented system(SIS),installed in SSC60S single SCS or SSC60D dual redundant SCS safety control station,works with SDV series safety I/O modules,interconnects with CENTUM VP DCS via Vnet/IP high-speed network,widely used in petrochemical,power,chemical refining ESD emergency shutdown and fire & gas protection systems.

Function

SCP461-11S1 is high-performance core safety processor module of SCS safety control station.It adopts dual MPU comparison architecture,two MPUs run identical safety calculation and cross-check results to detect transient faults.It executes safety interlock logic,emergency shutdown sequence,SOE sequence of event recording,alarm management and safety trend data collection.Communicate with HIS operator station,engineering station and safety I/O modules through Gigabit Vnet/IP bus.Two SCP461-11S1 modules can form 1:1 hot standby redundant configuration,standby processor synchronizes safety data in real-time,bumpless switchover occurs automatically once main CPU fails.Safety logic program can be downloaded,edited and diagnosed via ProSafe-RS engineering software.

Installation

Install on SSC60 chassis dedicated backplane slot,connect Vnet/IP shielded network cable to dual Gigabit Ethernet ports,configure safety logic and redundancy parameters via ProSafe-RS engineering software.Hot swap supported under redundant configuration.

Interface

‑Dual 1Gbps Vnet/IP RJ45 ethernet ports

‑RS232C service debug port

‑USB maintenance port

‑Internal ESB bus backplane connector

‑LED indicators for run,standby,alarm and fault status

Circuit feature

Dual MPU cross-comparison design,ECC memory error correction,hardware watchdog circuit,continuous hardware self-diagnosis,galvanic isolation on network ports,high diagnostic coverage＞99%,strong anti-electromagnetic interference,meet safety critical long-term uninterrupted industrial operation requirements.

Feature

SCP461-11S1 belongs to Yokogawa ProSafe-RS high-performance SCS safety CPU series.Suffix -11S1 is special version of SCP461-11.Common faults:backup battery aging,Gigabit network port damage,memory failure,backplane poor contact.Confirm firmware version before replacement.

Diagnostic

CPU operation error,memory fault,safety communication link loss or module hardware fault triggers alarm and upload diagnostic information to DCS HIS operator station.

Built‑in function

Safety interlock,emergency shutdown control,SOE event recording,alarm processing and safety network communication management for SCS safety control station,used for SIS safety spare replacement.

Product Brief

SCP461-11S1 is Yokogawa ProSafe-RS SCS high-performance SIL3 safety processor module,supports 1:1 hot standby bumpless switchover.Check SSC60 chassis model and system firmware compatibility before ordering.ESD anti-static protection required during installation.