GE IS220PHRAH1A Mark VIe HART Analog I/O Module

Configured for high-density analog acquisition and turbine signal processing in Mark VIe platforms, the GE IS220PHRAH1A (IS220PHRAH1A Analog I/O Pack) provides direct physical/electrical execution. The distributed I/O module conditions up to 10 analog input signals and drives 2 analog outputs while multiplexing bidirectional HART communication across dual-redundant Ethernet IONet networks

Hardware Specifications

Backplane Bus Communication Velocity & I/O Density Scaling

The IS220PHRAH1A packs high-density analog acquisition and HART digital communication into a compact module footprint. Dual RJ-45 Ethernet interfaces establish deterministic network communication with host Mark VIe controllers over primary and secondary IONet links. Analog input signals pass through second-order low-pass filters (12.5 Hz and 48.3 Hz poles) before digitized by a 16-bit ADC, maintaining a normal 5 ms scan execution speed. Integrated firmware flash compatibility enables dual HART modems (Modem A covering inputs 1-5 and output 1; Modem B covering inputs 6-10 and output 2) to route Asset Management System (AMS) digital records while ensuring continuous channel-to-channel isolation and output loop tracking.

Frequently Asked Questions

Q: How does the HART multiplexing architecture affect parameter update rates across field devices?

A: The 12 HART channels are split between two internal modems. If only one channel on a modem is active, data updates roughly once per second. If all six channels assigned to a modem are active, update latency scales to approximately eight seconds per channel.

Q: Can the IS220PHRAH1A module be plugged in while system power is active?

A: Yes, power can be applied by plugging in the 3-pin side power connector without de-energizing the main power cable because the module includes internal soft-start circuitry that controls initial current inrush.

Field Installation Guidelines

• Mount the terminal board securely and plug the PHRA pack directly into the DC-62 pin connector.

• Adjust the mounting bracket location so that no right-angle mechanical force is applied to the DC-62 pin connector interface.

• Secure the I/O pack mechanically using the threaded studs adjacent to the dual Ethernet ports.

• Connect ENET1 to the Ethernet network associated with the R controller in redundant Mark VIe architectures.

• Verify that terminal board 250-ohm burden resistors are engaged when configuring channels 1 through 8 for 4-20 mA current loop mode to ensure accurate 5 VDC conversion at 20 mA full scale.