DS200DDTBG1A LCI auxiliary I/O terminal board 、Voltage surge protection

Product ID: DS200DDTBG1A
Manufacturer: General Electric
Series: Mark V
Product function: LCI auxiliary I/O terminal board
Power requirements: +5 V DC, 6 A
Number of relay channels: 12
Power supply voltage: 28 V DC
Voltage range: 18-32 VDC
Operating temperature: -30 to +65 degrees Celsius
Dimensions: Height 15.9 cm x width
17.8cm repair: 3-7 days
Availability: Available
The DS200DDTBG1A is an LCI-assisted I/O terminal board manufactured and designed by General Electric as part of the Mark V series used in GE Speedtronic control systems. The DS200DDTB board (DDTB) is a high voltage terminal board used to assist the connection of I/O signaling systems. The board is connected to the DS200ADMA (ADMA) modular subboard mounted on the DS200DSPC (DSPC) digital signal processor control board. High-density connectors and ribbon cables connect the DDTB to the ADMA board. The DDTB is powered by the ADMA board. DDTB provides signal conditioning, scaling, buffering, and isolation to enable the DSPC board's digital signal processor (DSP) to access system-level signals in harsh environments. External wiring connections from high-voltage signals, contact I/O, current measurement (via low-level Hall effect devices), or high-current CT can be connected to DDTB terminals. The DDTB board has G1 and G2 versions. G2 lacks certain features of G1, noted where applicable.

Features:

High voltage AC input: There are two isolated inputs for connecting the high voltage AC signal. They use step-down transformers, passive filters and buffers to provide a ±5 V peak-to-peak signal (693 V rms applied) to the VCO input of the ADMA board. These inputs have a single screw terminal with a rating and isolation voltage that can withstand 1000 V peak transients.

High current signal inputs: There are six inputs with current detection resistors for ±5 amp continuous current signals (for CT inputs). They are differential buffered and can withstand a common mode voltage of ±12 V. Each input is filtered and scaled. These inputs have screw terminals with voltage surge protection.

Low current signal inputs: There are three inputs with current detection resistors for ±0.224 amp continuous current signals (for LEM current sensor signals). They are differential buffered and can withstand a common mode voltage of ±12 V. Each input is filtered and scaled. These inputs have screw terminals with voltage surge protection.

4-20 mA current loop input: Two CT or LEM input channels can be reassigned as receivers for the 4-20 mA current loop input signal. This alternative allocation is done by resetting certain jumpers. The input resistance is 192Ω, simulating input offset, so 0 mA produces a negative full scale and 20 mA produces a positive full scale. Open-loop detection and input normalization are managed by software.

Non-dedicated voltage input: Differential input voltage amplifiers are provided to power analog VCO inputs on the ADMA board. The amplifier has a gain of 1/2 and allows a range of ±10 V input signals. These inputs have screw terminals with voltage surge protection.