The GE IS220PDOAH1B, also cataloged as the IS220PDOA Discrete Output Module, operates as a dedicated hardware component for discrete output control signal execution and relay switching within GE Mark VIe Speedtronic turbine control networks.
Hardware Specifications
Parameter
Specification
Model
IS220PDOAH1B
Brand
GE
Origin
USA
Weight
1.00 lbs (0.45 kg)
Dimensions
Standard Mark VIe I/O Pack Size
Operating Temp
-30 to 65 deg C (-22 to 149 deg F)
Power Consumption
28 VDC, 0.71 A Nominal Input
Module Type
BPPC-Type Discrete Output Pack
Signal Interface
Discrete Output (DO)
Network Protocols
Dual IONet Ethernet Communication (TX/RX Link)
System Series
Mark VIe Speedtronic Control Platform
Backplane Bus Communication Velocity & Firmware Flash Compatibility
The GE IS220PDOAH1B discrete output pack receives digital command signals over redundant Ethernet TX/RX links (IONet) and drives field relay circuitry via its matching terminal board. Designed to maintain deterministic I/O scan timing, the pack supports high backplane bus communication velocity and real-time output feedback monitoring. Full firmware flash compatibility allows online software updates and channel diagnostics managed directly through GE ControlST software platforms without disrupting adjacent rack hardware.
Frequently Asked Questions
Q: What power supply parameters are required to operate the IS220PDOAH1B module?
A: The module operates on a nominal 28 VDC power feed drawing approximately 0.71 A, delivered via the terminal board backplane.
Q: How does the IS220PDOAH1B communicate with the main Mark VIe controller?
A: The module interfaces directly with the system controller via dual Ethernet IONet connections (TX/RX links) for high-speed deterministic command execution.
Q: Can the IS220PDOAH1B I/O pack be replaced while the system panel is energized?
A: Yes, the module supports live replacement (hot-swapping) on its terminal board, provided proper electrostatic discharge (ESD) and safety procedures are followed.
Field Installation Guidelines
Isolate primary control power to the specific output terminal board prior to servicing or installing the IS220PDOAH1B module.
Put on a grounded anti-static wrist strap connected to an unpainted metal chassis ground point before touching the unit.
Align the rear D-sub connectors of the IS220PDOAH1B pack with the mating headers on the terminal board.
Push the pack firmly until fully seated, then tighten both mechanical retaining screws to ensure low-impedance ground contact.
Connect both IONet Ethernet cables to the designated TX/RX ports before re-energizing the 28 VDC supply.
