GE IS200TPIMG1A Protective Interface Terminal Board
Configured for discrete trip‑signal routing in Mark VI turbine protection networks, the GE IS200TPIMG1A (TPIM) provides direct physical/electrical execution. It isolates field‑level protection wiring from controller logic, manages E‑Stop and relay feedback circuits, and supports simplex or TMR protection architectures.
Backplane Communication Velocity and I/O Density Behavior
GE Mark VI protection boards maintain deterministic backplane communication velocity to ensure synchronous trip‑signal propagation across TREG, TRPG, TRLY, and TPIM modules. The IS200TPIMG1A operates as a passive interface; it contains no firmware and therefore introduces zero latency beyond physical relay/contact propagation. In TMR systems, TPIM supports 2‑out‑of‑3 voting logic by providing clean, isolated discrete paths for controller‑level voting algorithms.
Frequently Asked Questions
Q: Can the IS200TPIMG1A be removed while the panel is energized? A: No. Removal under power is not recommended. De‑energize the panel to avoid undefined relay states or transient trip signals.
Q: Does the board introduce latency in TMR voting logic? A: No. TPIM is passive; voting latency is determined by the Mark VI controller firmware.
Q: Is the board compatible with TREG and TRPG? A: Yes. TPIM is designed to operate with TREG (positive trip power), TRPG (negative trip power), and TRLY (trip relay board).
Field Installation Guidelines
Mount on DIN rail using GE‑approved hardware.
Maintain segregation between 24 V dc trip circuits and higher‑energy wiring.
Use shielded cable for E‑Stop and relay feedback lines; terminate shields at a single grounding point.
Verify fuse seating and continuity before energizing the panel.
Ensure terminal blocks are fully latched; avoid over‑tightening screws.
Label all field wiring to support maintenance and fault tracing.
Confirm correct ribbon‑cable orientation when connecting to controller modules.
