Subsea Control Module Standard Functions/Features

• Four HP hydraulic outputs
• Twenty-two LP hydraulic outputs
• Dual HP and LP hydraulic inputs via shuttle valve
• HP and LP ESD valve
• Directly mounted digital control valves to single manifold block
• HP and LP vents to sea or closed loop returns

External Overview

• Carbon steel fabricated housing, painted to standard subsea paint specification
• Installation and intervention by ROV assisted running tool, funnel or diver onto mounting base
• Dielectric fluid filled pressure compensated housing and atmospheric SEM housing
• Designed for use up to 3000 meters of water
• 1.5 atmosphere nitrogen filled electronics housing with pressure and temperature monitoring
• Dual HP and LP supplies, incorporating individual hydraulic supply line filters with B3 = 200 rated elements
• Control of hydraulic valve actuators by stainless steel body, sheer seal type solenoid valves
• Earth strap for bonding and low resistance connection to the module mounting base on the manifold cathodic protection system
• Connection points legibly identified by proprietary laminated nameplates
• Stand alone sacrificial anodes for cathodic protection will be provided based on isolation for six months on the seabed
• Two outgoing electro-hydraulic ROV/diver stabplates both mounted on SCM mounting bamounting base

SEM Standard Functions

• Standard unit has single SEM (dual SEM optional) providing 4 to 20 mA (standard), discrete input/output instrumentation and controls interfaces
• Fully dual redundant power supplies and communication channels
• Housekeeping functions including internal voltage/current monitoring, internal pressure, temperature and humidity
• Mounting, power and communication interfaces for third party devices, IWIS compatible
• Fast scan analog data capture with configurable sample rates
• Ethernet, RS232 and RS4XX (2 off) communication ports; fully IWIS PPP compatible for true open architecture
• Quad Access Control provides media synchronization to enable two pairs of quad to be individually used, avoiding cross-talk issues
• Multi-drop architecture with individual remote device frequency and bit-rate configuration/selection to optimiza system data and control performance

Communications

Topside DCS and third party interfaces:

• Serial, Ethernet, fiber-optic solutions with a full range of standard industry protocols available

Subsea interfaces:

• Transparent RS232, RS4XX and Ethernet connectivity
• Profibus, CANbus, Modbus RTU and TCP implemented
• Full IWIS PPP compliant interface
• Fiber optics