The IS200TDBSH2A functions as a contact input and relay output terminal board. GE designed this board for the Mark VIe Speedtronic series. Its main job is to handle discrete signals in turbine control systems. Additionally, this model supports simplex configuration only. The PDIO I/O pack connects directly to this board. That pack communicates with the controller over Ethernet.
The IS200TDBSH2A offers 24 discrete contact input channels. It also provides 12 form-C relay output channels. The supply voltage runs at 24 VDC. Its operating range spans from 18.5 to 32 VDC. Moreover, the excitation voltage is jumper selectable. You can choose between 125 VDC or 24 VDC. The wetting current sits at 2.5 mA per channel nominally.
Furthermore, the input filter constant is 4 ms. This gives you hardware-based debounce protection. Each relay uses a form-C changeover architecture. The relay contact rating reaches 2.0 A continuous. Commutation speed stays under 10 ms typically. Surge suppression comes from integrated metal-oxide varistors per channel. Isolation rating reaches 1500 V RMS for group isolation.
The IS200TDBSH2A measures 23.8 cm in height. Its width is 17.8 cm. Two barrier-type terminal strips handle field wiring. A 37-pin D-sub connector labeled JR1 connects to the I/O pack. Pluggable terminal blocks are available for easier maintenance. Operating temperature ranges from -30°C to 65°C. Therefore, this board works well in harsh industrial environments.
Mounting options include flat surface or DIN-rail installation. A plastic insulator sits between the board and the carrier. That carrier then mounts onto a DIN rail. Alternatively, you can bolt the assembly directly into a cabinet. Use #18 AWG wires for most field connections.
First, mount the sheet metal carrier onto your DIN rail. Next, place the plastic insulator on the carrier. Then, attach the IS200TDBSH2A onto the insulator. Secure it with the provided hardware. After that, connect your field wiring to the terminal blocks.
The upper terminal block, TB1, handles relay outputs. The lower block, TB2, manages contact inputs. Screw assignments match those on SRLY and STCI boards. For shield termination, use a separate bracket. Meanwhile, if you add a relay option board, plug it into connectors JW1 and JW2. The connector force alone holds it in place.
Additionally, pay attention to wetting voltage selection. Jumper settings determine whether you use 24 VDC or 125 VDC excitation. The input wetting voltage range has three options: 16-32 VDC, 32-64 VDC, or 100-145 VDC. Threshold voltage is 50% of your selected wetting voltage.
The IS200TDBSH2A works with the WROBH1A option board. That combination gives you the same relay functionality as a TRLYH1B terminal board. However, this applies only to simplex systems. The option board adds fused-sensed power distribution to the first six relays. It also provides dedicated power to the last relay.
Default fuse values on the WROBH1 are 3.15 A. Both sides of the power distribution on relays 1 through 6 are fused. This feature supports systems where DC power floats relative to earth. Fuse voltage feedback works with 24 V, 48 V, and 125 V DC applications. It also supports 120 V and 240 V AC applications.
The IS200TDBSH2A comes from GE's reliable Mark VIe family. Its 24 contact inputs give you plenty of monitoring points. The 12 relay outputs allow for effective control actions. Furthermore, the integrated MOV surge suppression protects your equipment. The 4 ms hardware debounce filter prevents false triggers from noise.
Additionally, this board is easy to troubleshoot. The barrier-type terminal strips accept standard screwdrivers. The 37-pin D-sub connector provides a secure I/O pack interface. Many turbine operators choose this model because of its simplicity. Simplex operation reduces complexity while maintaining solid performance.
One IS200TDBSH2A terminal board
One plastic insulator sheet
One anti-static bag
One foam-lined shipping carton
We ship exclusively via FedEx, UPS, or DHL. Tracking number provided within 24 hours.
1. Is the IS200TDBSH2A suitable for TMR systems?
No, this board supports simplex configuration only. For TMR applications, please check other TDBS variants.
2. What I/O pack works with this board?
The PDIO I/O pack plugs directly into the 37-pin D-sub connector. It communicates with the controller over Ethernet.
3. Can I mount this board on a DIN rail?
Yes, you can. Use a sheet metal carrier plus the plastic insulator. Then mount that assembly onto a standard DIN rail.
4. What is the wetting current per channel?
The nominal wetting current is 2.5 mA for the first 21 circuits. Circuits 22 through 24 use 10 mA.
5. Does the board include surge protection?
Yes, each channel has integrated metal-oxide varistors (MOV) for surge suppression. Filters also reduce high-frequency noise.
| Brand Name | GE |
| Model No. | IS200TDBSH2A |
| Product Type | Terminal Board |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
