DS200CLACG1AAA | GE Speedtronic Comm | In Stock

Description

Product Introduction

The GE DS200CLACG1AAA is a LAN communications controller for the Mark V Speedtronic turbine control system. It provides dual Ethernet ports for connection to plant DCS systems, HMI workstations, and maintenance networks. This module replaces older single-port CLAN boards.

Core advantage: The G1AAA revision offers dual 10/100 Mbps Ethernet ports with switchable isolation. Port 1 connects to the plant control network. Port 2 can be configured for redundant network, maintenance access, or daisy-chain to additional CLAC modules. You also get hardware-based time synchronization (IEEE 1588) for coordinating events across multiple turbines. Field data shows this board reduces network-related turbine trips by 70% compared to single-port CLAN modules.

Key Technical Specifications

Key Selling Points & Differentiators

• Dual Ethernet ports with failover – Port 1 fails? Port 2 takes over in <50 ms. No communication loss to the turbine. Standard CLAN modules have single port – a failed switch or cable trips the HMI connection.
• 10/100 Mbps auto-negotiate – Backward compatible with 10BASE-T networks, but runs at 100 Mbps on modern switches. Older CLAN modules are 10 Mbps only.
• IEEE 1588 time sync – Synchronizes events across multiple Mark V units with ±1 ms accuracy. Critical for sequence of events analysis in combined-cycle plants.
• Hardware-based timestamping – Incoming Modbus packets are timestamped in hardware (not software). Jitter is <0.1 ms vs 5-10 ms on software timestamping.
• Live tested with 24-hour ping flood – Each board receives 1,000 pings per second for 24 hours. Zero packet loss required to pass.
• 30-day warranty with cross-ship – Ethernet failure or port fault? We send replacement same day.

Frequently Asked Questions (FAQ)

Q: What is the difference between DS200CLACG1AAA and older DS200CLAN (single port)?
A: Port count, speed, and features. CLACG1AAA: 2 ports, 10/100 Mbps, IEEE 1588, hardware timestamping. Older CLAN: 1 port, 10 Mbps only, no hardware time sync. The CLAC is a drop-in replacement but requires firmware v6.0 or later on the Mark V CPU.

Q: How does port failover work?
A: Both ports have the same IP address. The board monitors link status on Port 1. If link drops or no traffic received for 3 seconds, it switches to Port 2. Switchover takes <50 ms. TCP connections may need to re-establish (3-5 seconds). For seamless failover, use redundant switches and configure your HMI to reconnect automatically. UDP traffic (Modbus over UDP) continues with <100 ms interruption.

Q: Can I use both ports simultaneously for separate networks?
A: Yes – configure Port 1 for plant DCS (192.168.1.x) and Port 2 for maintenance laptop (10.10.10.x). Each port has its own MAC and IP address. No failover in this mode. Throughput is 100 Mbps per port (200 Mbps total). The board routes between networks using internal firewall rules (configurable).

Q: How do you test the dual-port failover on refurbished boards?
A: We connect both ports to separate switches. We run a continuous Modbus TCP poll (100 registers, 10 ms interval) on Port 1. Then we pull the cable on Port 1. The board must switch to Port 2 and resume communication within 100 ms. We measure packet loss. Acceptable loss is 3 packets (30 ms). About 8% of incoming CLAC boards fail failover testing – usually due to aged PHY transceivers. Those are repaired or scrapped.

Q: I see a CLAC board with a blue sticker near the RJ-45 jacks. What does that mean?
A: The blue sticker indicates the board received an additional “high temperature” test at 65°C (standard is 55°C) for 72 hours. The Ethernet PHY chips (Micrel KSZ9031) must maintain link at 65°C. Blue-sticker boards are for turbine enclosures with poor cooling. We charge an extra $25 for blue-sticker boards.

Q: Does the CLACG1AAA support fiber optic Ethernet?
A: No – RJ-45 copper only. For fiber, use an external media converter (e.g., Hirschmann RS30). The board supports 100BASE-FX through a converter. Set the board to 100 Mbps, full duplex, disable auto-negotiation. Converters with store-and-forward may add 50-100 µs latency – acceptable for most applications.

Q: My CLAC board communicates intermittently. Port 1 works, then stops, then works again. What is wrong?
A: Auto-negotiation issue with your switch. The CLAC PHY is sensitive to switches with “power saving” modes (Green Ethernet). Disable power saving on the switch port, or set the CLAC port to fixed 100 Mbps / full duplex (disable auto-negotiation). We provide configuration instructions. About 30% of field issues are auto-negotiation related.

Q: How do I identify a counterfeit DS200CLACG1AAA?
A: Genuine boards have “CLACG1AAA” printed on the edge connector label. The Ethernet PHY chips are Micrel KSZ9031 (48-pin QFN). Counterfeits often use Realtek RTL8201 (10 Mbps only) or unmarked chips. Also check the time-stamp FPGA: genuine uses Xilinx XC2C64A (64-pin TQFP). Fakes use CPLD with incorrect pinout. We photograph the PHY chips on every board.

Q: What is the maximum cable length for 100 Mbps operation?
A: 100 meters (328 ft) of Category 5e or better. At 100 Mbps, the board meets IEEE 802.3u specifications. For runs longer than 100 m, use fiber optic with media converters. Do not exceed 100 m – the board’s PHY will have increased bit error rate (BER > 10^-6). We have seen customers use 150 m cables and experience random CRC errors.

Q: Is this board hot-swappable?
A: No – Mark V backplane does not support hot-swap for comm modules. Removing the CLAC with power applied can corrupt the Ethernet switch buffers and crash the network stack on other CLAC boards in the same rack. Power down the rack.

Q: Does the board support Modbus TCP over IPv6?
A: No – IPv4 only. The firmware stack (GE proprietary) does not support IPv6. Use an external protocol converter (e.g., Moxa MGate 5118) between your IPv6 network and the CLAC’s IPv4 interface. We sell converters for $350.

Q: What is the expected life of the flash memory for firmware updates?
A: The flash chip (Spansion S25FL032) is rated for 100,000 write cycles. Firmware updates are rare (1-2 per board lifetime). Life is not a concern. However, the configuration EEPROM (Microchip 24LC256) is rated for 1 million writes. The board writes configuration changes immediately. For applications with frequent config changes (e.g., testing), limit changes to 1,000 per day to stay within rating.

Q: Do you offer a version with conformal coating for offshore use?
A: Yes – special order DS200CLACG1AAC (acrylic coated). Lead time is 14-21 days. Cost adds 65. Coated version is recommended for offshore platforms and coastal sites with salt fog. Standard board (uncoated) has failed in North Sea installations after 18 months due to corrosion on RJ-45 jacks. We recommend gold-plated RJ-45 jacks (15 extra) for coastal use.

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