GE IS220PDIOH1A PDIO Combined Discrete Input‑Output I/O Pack

Description

Hardware & Electrical Specifications

‑ Model：IS220PDIOH1A ‑ Part Number：IS220PDIOH1A ‑ Module Type：PDIO Combined Discrete Input‑Output I/O Pack ‑ Mounting：Installed in Mark VIe I/O pack rack ‑ Power supply：24 VDC backplane power, operating range 22.8‑28.6 VDC; field contact input supports 5‑125 VDC depending on matched terminal board ‑ Input channels：24 optically‑isolated discrete contact input channels, dry‑contact sensing, fixed 4 ms hardware debounce filter, software filter configurable ‑ Output channels：12 relay drive output channels, drives external relay coils on matched terminal board ‑ Communication interfaces：  • Dual redundant 100 Mbps RJ45 IONet Ethernet ports for controller communication  • DC‑62‑pin connector for connection to matching discrete I/O terminal boards ‑ Compatible terminal boards：TDBSH2A/4A/6A (simplex), TDBTH2A/4A/6A (TMR redundant) ‑ PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance ‑ On‑board protection：ESD protection, MOV surge suppression, optical channel isolation 1500 V, built‑in self‑diagnosis for input channel, output drive circuit and hardware fault detection ‑ Compatibility note：Cannot run standalone; must match Mark VIe I/O pack rack, main controller and corresponding TDBS / TDBT terminal boards; full signal‑loop simulation test mandatory after replacement。

Environmental Specifications

‑ Operating temperature：‑30 ℃ ~ +65 ℃ ‑ Storage temperature：‑40 ℃ ~ +85 ℃ ‑ Relative humidity：5%‑95% non‑condensing ‑ Installation location：Indoor turbine control cabinet ‑ EMC compliance：IEC 61000‑6‑2 ‑ Certifications：CE, UL Class I Div 2 hazardous location certification

Mechanical Data

‑ Weight：approx 0.45 kg ‑ Dimension：Standard Mark VIe I/O pack module form‑factor ‑ Handling note：ESD‑sensitive PCB; discrete signal acquisition and relay drive circuit, anti‑static wrist‑strap mandatory during handling ‑ Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Collect field discrete on‑off status signals from limit switches, interlock contacts, push‑buttons and relay dry contacts.
2. Execute hardware‑level input debounce filtering, optical isolation and digitization; provide high‑precision SOE time‑stamping for contact state‑change events.
3. Receive control commands from main controller via IONet bus, output drive signals to terminal‑board relays for interlock logic and auxiliary equipment control.
4. Transmit digital status data, SOE event records and output feedback status to main controller through redundant IONet bus.
5. Continuous self‑diagnosis for input channels, output drive circuit and module hardware; report open‑circuit, short‑circuit and hardware fault alarm status.
6. LED status indication:   ‑ Green LED：Module power supply normal / RUN status   ‑ Yellow LED：Channel signal / IONet link activity indicator   ‑ Red LED：Module FAIL / channel fault alarm

Installation & Wiring Requirements

1. Cut off I/O pack rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Insert module into designated slot of I/O pack rack, lock module latch to ensure reliable backplane contact.
3. Field discrete signal wiring strictly follow GE Speedtronic Mark VIe wiring manual; signal cables shall be separated from high‑power cables; connect shielding to dedicated ground terminal.
4. Complete protective grounding according to GE system specification.
5. After replacement: verify I/O pack power‑on status, check each DI channel status reading, perform DO loop commissioning and SOE function test.
6. Replacement note: For TMR triple‑redundant system application, hardware consistency and firmware‑version matching shall be verified; full signal‑loop simulation test mandatory before unit put‑into‑service.