Product Overview
IS220PAICH1A and IS220PAICH2A are PAIC analog input/output I/O packs for the Mark VIe system. Each pack provides the electrical interface between one or two I/O Ethernet networks and an associated analog input terminal board.
Both variants handle ten analog inputs and two analog outputs. Inputs 1–8 can be configured for 1–5 V dc, ±5 V dc, ±10 V dc, or 0–20 mA; inputs 9–10 support 0–20 mA or ±1 mA. The difference that affects output selection is the first analog-output path: IS220PAICH2A adds hardware support for 0–200 mA on that output, while IS220PAICH1A supports two 0–20 mA current-loop outputs.
Technical Data
| Technical item | IS220PAICH1A | IS220PAICH2A |
|---|---|---|
| Brand | GE | |
| Product type | PAIC analog input/output I/O pack | |
| Analog inputs | 10 | |
| Inputs 1–8 | 1–5 V dc, ±5 V dc, ±10 V dc, or 0–20 mA | |
| Inputs 9–10 | 0–20 mA or ±1 mA | |
| Analog outputs | 2 × 0–20 mA current loop | 2 outputs; first output supports 0–200 mA with extra hardware |
| Input converter | 16-bit A/D | |
| Normal scan | 5 ms (200 Hz) | |
| Operating temperature | −30 to +65 °C | |
| Pack interfaces | Dual RJ45 Ethernet, 3-pin power, DC-37 terminal-board connector | |
Configuration
The pack monitors the configured analog signal path, including input limits, converter references, output-current feedback and analog-output relay feedback. Use the LED and infrared serial indications with the configured channel range to distinguish a field signal from a pack-level symptom.
Record the channel-by-channel range selection before any hardware exchange. The ten analog inputs do not all share the same permitted current/voltage options, so the configured range must be checked against the actual transmitter connection.
Technical Diagram
The manual connection figure is a reference for the associated acquisition, terminal-board and I/O-pack signal path. Use it together with the installed terminal-board identifier and application configuration; it does not replace the channel-specific wiring record.
For a channel issue, compare the configured range, terminal-board connection and observed field value before disturbing shared pack hardware. The figure is clickable for close inspection.
Analog Monitoring
Inputs 1–8 can be configured for voltage or current ranges, while inputs 9–10 have their own supported current ranges. Validate the configured range, measured field signal and terminal-board mapping before changing a pack or acquisition board.
A monitoring investigation should compare LED or infrared information with the measured field value and converter/reference status. This prevents an isolated transmitter, terminal-board or range-selection issue from being treated as a pack-wide problem.
Product FAQ
Which input ranges must be verified for IS220PAICH1A / IS220PAICH2A before a transmitter is reconnected?
Match the configured channel range to the actual voltage or current transmitter signal.
Why does IS220PAICH1A / IS220PAICH2A require matching pack, acquisition-board and terminal-board IDs?
The hardware set is checked by the application and a mismatch can prevent correct channel operation.
How can a suspected IS220PAICH1A / IS220PAICH2A analog-channel fault be separated from a transmitter fault?
Compare the measured field signal, configured range and terminal path before changing shared hardware.
What IS220PAICH1A / IS220PAICH2A indication is useful after a power-up problem?
Use the pack LEDs and infrared diagnostics with the documented startup checks.
When should IS220PAICH1A / IS220PAICH2A analog output current feedback be investigated?
When the commanded output and observed field response disagree after the load path is verified.
What should be recorded before replacing IS220PAICH1A / IS220PAICH2A?
The configured ranges, board IDs, terminal-board mapping and affected channel numbers.
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