RCU501 is a high performance, general purpose, real-time process control computer for use in a
wide variety of system applications in both on- and offshore installations. The processor core is
an embedded Power PC™ architecture and the module is approved for Ex Zone 2 applications.
Application types
• Dynamic Positioning Systems
• Thruster Control / Steering Systems
• Navigation Sensor Integrator
• Integrated Process Control Systems
• Alarm and monitoring Systems
• Safety Systems
Function
• Dual ethernet LAN process networks
• Dual RedundancyNet interface for
redundant RCU confi guration
• Dual Remote IO process BUS (RBUS)
• 4 general purpose Digital Input channels
• 4 general purpose Digital Output
channels
• 32 serial lines for 3rd party interface
• 2 PROFIBUS channels for 3rd party
interface
• 2 CANBUS channels for 3rd party
interface
Feature
• Single unit topology: SIL 1 compliant
• Dual unit topology: SIL 2 and SIL 3
compliant
• Triple unit topology
• Ex Zone 2 approved
• Compliant to the following protocols:
1. Modbus (Serial and TCP)
2. NMEA 0183
3. PROFIBUS/PROFIsafe
4. CAN/DeviceNet
• 3rd party vendor specifi c protocols are
available upon request
• Power:
1. Redundant power input with power
alarm monitoring
2. Inrush current and over-voltage
protection
• Enhanced watchdog with fail-safe
function and system status output
Benefi ts
The following built-in functions
minimize system downtime:
• Extended Built-in Self- Test (BIST)
for computer diagnostics and fault
identifi cation during start-up and runtime
• Prepared for online remote diagnostics
• Prepared for online fi rmware upgrade
• Bootable from fi le server or local fl ash
memory
• Easy installation and replacement
1. DIN Rail mounting
2. All connections are pluggable
3. 3 digit address switches
• Hot swap in redundant applications,
dual and triple Hot-Standby redundancy,
1oo2 redundancy
• Status LED indication (Normal/Error)
• RoHS compliant
Computer performance
• RCU501 performance is application
dependant and governed by process
complexity, updating frequency and
number of interfaced I/O. Maximum
updating frequency is 50 Hz.
• Confi guration guidelines:
1. ESD/PSD: max. 800 I/O,
F&G: max. 700 I/O
both at scan rate: 1 Hz
2. Process/ Automation:
max. 2000 I/O,
design advice: 1280 I/O
both at scan rate: 1 Hz
3. Anti-surge: 3 loops, Scan rate: 50 Hz
4. Dynamic Positioning: Triple
redundant DP system combined
with Position Mooring. (Scan rate
is adapted to signal processing and
varies from 1 to 10 Hz).
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