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IS200SRTDH2ACB - 8-Channel Simplex RTD Terminal Board is available in stock which ships the same day.
IS200SRTDH2ACB - 8-Channel Simplex RTD Terminal Board comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: IS200SRTDH2ACB
Manufacturer: General Electric (GE)
Series: Mark VI
Product Type: RTD Input Terminal Board
Board Form Factor: Simplex / Compact Terminal Board
Number of Channels: 8
RTD Types Supported: 100 Ω Platinum
Excitation Current: 2.5 mA DC
Noise Suppression: High-Frequency Noise Filtering & Surge Protection
Terminal Block Type: Two Barrier-Type Terminal Blocks
Connectors: 1 × 37-Pin D-sub Connector (JR1) for Cable Interface
Conformal Coating: Yes (Artwork Rev C Revision Level)
Operating Temperature: -30°C to +65°C
Storage Temperature: -40°C to +85°C
Relative Humidity: 5% to 95% Non-Condensing
System Compatibility: GE Mark VI Speedtronic Control System
Availability: In Stock
Repair Lead Time: 3–7 Days
Country of Origin: United States
Manual Reference: GEH-6421
The IS200SRTDH2ACB is an 8-Channel Simplex RTD Terminal Board designed and manufactured by General Electric as part of the Mark VI Series used in Speedtronic turbine control systems. SRTD board is a compact RTD terminal board, designed for DIN-rail or flat mounting. The board has eight RTD inputs and connects to the PRTD or VRTD I/O processor. High-density Euro-block type terminal blocks are mounted to the board. An on-board ID chip identifies the board to the I/O processor for system diagnostic purposes. The VRTD board does not work with SRTD. A single cable with a DC-37 pin connector connects SRTD to the VME rack where the VRTD is located. This cable is identical to those used on the larger TRTD terminal board. You can connect two SRTD boards to the VRTD for a total of 16 temperature inputs. Only simplex systems are supported.
INSTALLATION:
The SRTD and a plastic insulator mount on a sheet metal carrier which mounts on a DIN rail. Optionally, the SRTD and insulator mount on a sheet metal assembly that bolts directly in a cabinet. The eight RTDs are wired directly to the Euro-style box-type terminal block, which has 36 terminals and is available in two types. Typically #18 AWG wires (shielded twisted triplet) are used. I/O cable shield terminal uses an external mounting bracket supplied by GE or the customer. Terminals 25 through 34 are not connected. E1 and E2 are mounting holes for the chassis ground screw connection (SCOM).
SIGNAL CONDITIONING & RTD EXCITATION:
The RTD Terminal Board supplies each connected 3-wire RTD channel with an individual constant-current excitation source to prevent lead-resistance imbalance errors. Onboard passive RC network filters suppress high-frequency electromagnetic interference (EMI) and radio frequency interference (RFI) introduced by long field wiring runs. Signal conditioning logic converts raw RTD voltage drops into calibrated temperature inputs for central controller execution, providing precise temperature feedback and trip protection for critical rotating assets.
OPERATION:
The terminal board supplies a 10 mA DC multiplexed (not continuous) excitation current to each RTD, which can be grounded or ungrounded. The eight RTDs can be located up to 300 m (984 ft) from the turbine control cabinet with a maximum two- way cable resistance of 15. The on-board noise suppression is similar to that on the TRTD. The RTD inputs and signal processing are illustrated in the figure. The A/D converter in the PRTD pack samples each signal and the excitation current four times per second for normal mode scanning, and 25 times per second for fast mode scanning, using a time sample interval related to the power system frequency. Linearization for the selection of 15 RTD types is performed by the processor.
WHY BUY FROM WOC
World of Controls maintains a comprehensive global stock of OEM replacement parts for GE Mark VI Speedtronic control systems. The RTD terminal board is available in UNUSED surplus and professionally REBUILT conditions, covered by complete warranty protection. Each board undergoes rigorous inspection and full channel testing against original manufacturer specifications to verify excitation current accuracy, channel isolation, noise rejection, and signal path continuity prior to shipment. We also provide professional repair, exchange, and technical support services to help minimize plant downtime and ensure smooth operation of your industrial assets. Contact our team to confirm current availability, request a competitive quote, or arrange quick delivery options.
What is GE IS200SRTDH2ACB?
The GE IS200SRTDH2ACB is an 8-channel RTD terminal board used in GE Mark VI control systems. It interfaces 3-wire RTD sensors with the control system to accurately monitor temperatures across bearings, windings, generators, and process machinery.
What RTD sensor types are compatible with the Terminal Board?
The board supports standard 3-wire RTD types including 100 Ω Platinum (Pt100), 10 Ω Copper (Cu10), 120 Ω Nickel (Ni120), and 10 Ω Nickel-Iron sensor configurations.
What is the primary difference between the SRTD H1 and H2 board versions?
The H2 version is a compact form-factor terminal board featuring conformal coating protection on the printed circuit board, designed for space-constrained enclosures and harsh operating environments, whereas the H1 version utilizes a standard full-size board footprint.
How is field wiring connected to the SRTDH2ACB board?
RTD field sensor leads connect directly to two barrier-type screw terminal blocks (containing 76 terminals total). Signal output to the VME control rack is provided through a single 37-pin D-sub connector labeled JR1.
Can World of Controls test or repair my existing terminal board?
Yes. World of Controls offers complete diagnostic testing, component-level repair, and re-certification services for GE Mark VI terminal boards. Contact us to coordinate repair evaluation, turnaround timelines, and exchange options.
