IS200STCIH2A GE MKVI, Simplex Contact Input Terminal Board

Description:

The IS200STCIH2A is a Simplex Contact Input terminal board from General Electric's Mark VI series. This board is designed for either DIN-rail or flat mounting and supports up to 24 contact inputs. It can handle nominal excitation voltages of 24, 48, and 125 V DC from an external source. The board features noise suppression to guard against surges and high-frequency interference. It is compatible with the PAIC I/O Pack, which connects via a D-type connector and communicates with the controller over Ethernet. The board is intended for use in simplex systems only.

The IS200STCIH2A board, along with a plastic insulator, is mounted on a sheet metal carrier that can be installed on a DIN rail or bolted into a cabinet. Contact inputs are usually wired directly to the terminal block using #18 AWG wires, with shields attached to a separate bracket. The board includes a right-angle header compatible with various commercially available pluggable terminal blocks, totaling 52 terminals.

The board functions similarly to the TBCI model but is designed for the specified excitation voltages of 24, 48, and 125 V DC. The excitation ranges are 16 to 32 V DC, 32 to 64 V DC, and 100 to 145 V DC, respectively, with a threshold voltage at 50% of the excitation voltage. The first 21 circuits have a maximum current of 2.5 mA, and circuits 22 through 24 can handle up to 10 mA. The 24 V DC power supply is current-limited to 0.5 A and protected by polymer positive temperature coefficient (PTC) fuses. Each input includes filters to reduce high-frequency noise and suppress surges. The board routes discrete input voltage signals to the I/O processor, which converts them to digital signals for transmission to the controller.

- Channels: 24 dry contact voltage input channels.
- Excitation Voltage: Nominal 24 V DC, with a range of 18.5 to 32 V DC (pluggable terminal block).
- Current Input: The first 21 circuits draw 2.5 mA, while the last three circuits draw 10 mA.
- Hardware Filter: 4 ms for input.
- Fault Detection: Includes monitoring for excitation voltage loss and unresponsive contact inputs in test mode.

The board features a 37-pin female D-type connector and a three-position female plug, with over 80 resistors, capacitors, diodes, and a single integrated circuit on the board.

Datasheet Link:

IS200STCIH2A GE MKVI, Simplex Contact Input Terminal Board PDF Datasheet