Model 922-420

SUBSEA QUALIFIED 4-20 mA GATEWAY


The Model 922-420 provides an advanced SIIS Level 1 gateway to a SIIS level 3 network, and is ideally suited to interface with modern control systems. It has been designed and qualified specifically for permanent subsea installation and is highly fault tolerant by using protection and redundant circuitry.

Advanced diagnostics provide real time health monitoring of the system and include optical SFP information, temperature, voltage, humidity, Ethernet link status, and Ethernet switch configuration. The model 922-420 uses a common unified software interface, like all of Focal’s SOC products, making integration faster and easier.

Optical communication performance can be extended by using Focal’s subsea qualified fiber-optic SFP modules. Option are available supporting tiebacks or step outs of up to 200 km.

Features

  • 8 isolated SIIS level 1 (4-20 mA) channels
  • 1-port SIIS level 3 (100 Base-T(X) Ethernet) switch
  • Qualified per ISO 13628-6 / API 17F
  • MTBF > 200,000 hours at +40 C
  • Advanced diagnostics and configuration using Modbus TCP
  • DHCP-configured IP address with static IP backup
  • 3U Eurocard form-factor with options for front panel or heat sink
  • Failsafe remote firmware update

Benefits

  • Proven SIIS level 1 & level 3 solution for subsea communications
  • Reduces cost by using standard configurations
  • Simplifies integration with unified software interface
  • Supports copper or fiber-optic connections with qualified SFP modules
922-420 Specifications
SIIS Level 1 (4-20 mA)
No. Channels
8 (8 on 21-pin Micro-D)
Sampling
1 ms
Resolution
±0.25% F.S.
Protection
Over-voltage up to ±25V; ESD ±15 kV air, ± 8 kV contact
Isolation
250 Vrms
SIIS Level 3 (Optical and Copper Ethernet)
No. Ports Copper: 1 (1 on Front 9-pin Micro-D)
Optical: 2 (2 on Front SFP Port)
Format
SIIS level 3, 10/100 Base-T(X)
Connectors
Harness 1 x 21-pin Micro-D
Front 1 x 9-pin Micro-D
2 x SFP (optical port)
Power
Consumption
SIIS-Medium, 5.5 W typical (6 W max.)
Voltage
+20 to +28 VDC, regulated
Current
0.2 A (0.5 A max.)
Protection
ESD, EMI, over-voltage, reverse voltage, overcurrent (no fuses)
Management
Ethernet Switch
Layer 2, Broadcast storm protection, rate limiting, flow control, 802.1q VLAN, DHCP, 802.1p port Priority, port mirroring
Diagnostics and Configuration
LED, Webserver, Modbus TCP / RTU, CLI, TELNET
Redundancy
Automatic, < 3 s
Firmware
Fail safe remote firmware update
Mechanical
Dimensions
3U Eurocard, 160 mm x 100 mm x 4 HP
Mounting
Eurocard 3U rack or 4 x M3 hardware
Options
Front panel
Life Cycle
Design Life
> 20 years @ +40°C
MTBF
> 200,000 hrs @ +40°C
Testing
Factory Acceptance Test (FAT) at min. and max. temperature
Options
Environmental Stress Screening, thermal or vibration
Environmental
Temperature
-20°C to +70°C (operation)
-40°C to +85°C (storage)
Humidity
5% to 85% RH, non-condensing
Vibration
5 g, per ISO13628-6 / API 17F
Shock
30 g, per ISO 13628-6 / API 17F
Qualification
ISO 13628-6 Q1 / API 17F
Options
8000 PSI rated
 

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Typical Applications

  • Subsea communications
  • Long distance step out or tie back
  • Interface to devices (e.g. sensors, valves, pumps)
  • Subsea Electronics Modules (SEM) and other subsea distribution nodes
  • Upgrades available for legacy communication systems