Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Analog I/O Pack (PAIC) |
| Compatible System | GE Mark VIe Speedtronic |
| Analog Inputs | 10 Channels Total |
| Input Config (Ch 1-8) | 5 V, 10 V, or 4-20 mA (Software Configurable) |
| Input Config (Ch 9-10) | 1 mA or 4-20 mA |
| Analog Outputs | 2 Channels, 0-20 mA Range |
| High-Current Option | Output 1 supports 0-200 mA via additional hardware |
| Data Interface | Dual RJ-45 Ethernet Connectors (ENET1/ENET2) |
| Field Connection | Single DC-37 Pin Connector |
| Power Input | 3-Pin Connector with Soft-Start Functionality |
| Diagnostics | Front Panel LED Indicators |
Product Introduction
The GE IS220PAICH2A 336A4940CSP11 is a mixed-signal analog I/O pack designed for the Mark VIe Speedtronic control system. It serves as the electrical interface bridging field devices and the controller, processing 10 configurable analog inputs and 2 analog outputs via a direct DC-37 pin connection to the terminal board.This pack handles signal conditioning internally, sensing voltage across load terminal resistors located on the mating terminal board for current loop inputs. The GE IS220PAICH2A 336A4940CSP11 features an inherent soft-start function to control current surges during live insertion, and the second output channel includes hardware for a 0-200 mA range when required. (Field tip: Always verify the DC-37 pinout against your specific terminal board revision before wiring; pin assignments vary between TBAC types.)
Installation & Configuration Guide
Preparation (10 min)
- Verify the mating terminal board part number matches the PAIC configuration.
- Confirm Ethernet network topology (single vs. dual ring) for ENET1/ENET2.
- Gather tools: #2 Phillips, torque screwdriver, DC-37 extraction tool.
Removal (5–10 min)
- Remove the two mechanical mounting bolts securing the pack to the terminal board bracket.
- Disconnect the 3-pin power connector and dual RJ-45 Ethernet cables.
- Release the DC-37 connector locking mechanism and slide pack off. Do not pull by the cables.
- Self-correction: I initially forgot to mention the mounting bracket alignment. Always check that the bracket is not bent before installing the new pack; misalignment stresses the DC-37 connector.
Installation (10 min)
- Align the GE IS220PAICH2A 336A4940CSP11 with the DC-37 connector. Push evenly until fully seated.
- Reinstall the two mechanical mounting bolts. Torque to spec to prevent connector stress.
- Reconnect power and Ethernet cables. ENET1 typically connects to the R controller network.
- Verify the pack is mechanically secure and not applying lateral force to the DC-37.
Power-On & Test (10 min)
- Apply power. Observe front panel LEDs for power and communication status.
- Use ToolboxST to verify the pack is recognized on the Ethernet network.
- Force analog output values and verify with a multimeter at the terminal board.
- Apply known signals to analog inputs and confirm scaling in ToolboxST.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Action |
|---|---|---|
| No Power LED | 3-pin connector loose | Reseat power connector. Measure 24V at pack input. |
| Ethernet Link Down | Cable or port failure | Swap ENET1/ENET2 cables. Check switch port status. |
| AI Reading Zero | Open current loop | Check field wiring and terminal board load resistor. |
| AO Not Responding | ToolboxST config error | Verify output channel is enabled and scaled correctly. |
| Intermittent Comm | DC-37 connector stress | Check mounting bolt torque. Inspect connector for bent pins. |
Dimensions, Mounting & Wiring Notes
- Form Factor: Mark VIe I/O Pack
- Mounting: DC-37 backplane + 2x front mounting bolts
- ⚠️ Warning: Never apply force to the DC-37 connector. Misalignment causes intermittent failures and pin damage.
- Wiring: Field wiring connects to the terminal board, not directly to this pack.
- Clearance: Maintain 0.5″ clearance around Ethernet connectors for cable bend radius.
FAQ
Is this a standalone card?
No. The GE IS220PAICH2A 336A4940CSP11 is an I/O pack that must be mated to a compatible terminal board. It cannot function alone.Can I hot-swap this pack?
Yes. The soft-start circuit allows live insertion without powering down the terminal board or system.What does the “336A4940CSP11” suffix mean?
It’s the manufacturing lot and revision code. Always match the full part number when replacing to ensure hardware compatibility.I see “PAICH1A” in some listings. Is that the same?
No. PAICH1A is a different variant with different channel configurations. GE IS220PAICH2A 336A4940CSP11 has 10 AI and 2 AO; verify your application needs.How do I configure the analog inputs?
Use ToolboxST. Each of the first 8 channels can be set to 5V, 10V, or 4-20mA. Channels 9-10 support 1mA or 4-20mA. Configuration is software-based, no jumpers.What’s the warranty on refurbished units?
We provide a 1-year warranty on all tested units. Each pack undergoes 24-hour burn-in, Ethernet handshake verification, and full-range I/O calibration testing.Can I use this with Mark VI (non-e) systems?
No. The GE IS220PAICH2A 336A4940CSP11 is designed for Mark VIe Ethernet-based I/O. Mark VI uses different I/O packs with parallel backplane interfaces.
