Product Core Brief

• Model:
• Brand: GE Fanuc / GE
• Series: Series 90-30 PLC
• Core Function: Switches 12/24VDC loads via 8-channel positive logic (sourcing) transistor outputs for solenoids, relays and indicator lights.
• Product Type: 8-Point Sourcing Discrete DC Output Module
• Key Specs: 2A per channel | Internally fused groups | 1500V field-to-logic isolation Note: Discontinued legacy hardware; factory new stock limited, surplus and refurbished units widely traded. Hot swapping is not supported for Series 90-30 backplanes.

Key Technical Specifications

• Channel Configuration: 8 sourcing outputs, split into two internally fused groups (Channels 1–4, 5–8)
• Supported Load Voltage: 12–24 VDC (+20%, -15%)
• Continuous Current Rating: 2 A per channel
• Fuse Limits: 2 A per fuse at 60°C; 4 A per fuse at 50°C
• Response Time: ≤2 ms ON / ≤2 ms OFF
• Maximum Inrush Current: 9.4 A for 10 ms
• ON-State Voltage Drop: ≤1.2 V
• OFF-State Leakage Current: ≤1 mA
• Isolation Rating: 1500 VAC 1-minute withstand between field circuits and backplane logic
• Backplane Power Draw: 55 mA @5 VDC (all outputs energized)
• Status Indicators: 8 channel status LEDs + fuse fault LED
• Operating Temperature: 0°C to 60°C horizontal cabinet mounting
• Storage Temperature: -40°C to 85°C
• Form Factor: Single-width Series 90-30 slot
• Compatible Chassis: IC693CHS391, IC693CHS392, IC693CHS397, IC693CHS398
• Termination: Plug-in captive screw terminal block

Product Introduction

This unit delivers high-current DC switching for machine-level discrete control. Positive logic sourcing outputs supply positive DC potential to connected loads, a common topology for solenoid valves and auxiliary contactor coils.

Built-in grouped fuses offer short-circuit protection without external fuse terminals. The galvanic isolation prevents field-side electrical noise from propagating onto the PLC backplane.

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking and hardware revision. Inspect backplane edge pins for bending or corrosion; check terminal housing for cracks.
2. Live Testing: Install into validated Series 90-30 rack, apply external 24VDC field power. Cycle each channel continuously against resistive loads over a 24-hour run-in period.
3. Electrical Testing: Use Fluke 115 to monitor backplane rail stability. Insulation resistance testing must exceed 10MΩ between field terminals and chassis protective ground.
4. Firmware/Config Backup: Record module hardware revision. Photograph terminal wiring layout before disassembly.
5. Final QC & Packaging: Place unit inside anti-static shielding. Attach dated QC test tag documenting channel switching validation prior to shipment.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ No Hot Swap Support: Series 90-30 backplanes lack hot-swap bus logic. Live removal triggers rack communication faults and risks permanent backplane damage. Full rack power shutdown required. ❗ Sourcing vs Sinking Mix-Up: This positive logic sourcing module cannot directly replace negative logic IC693MDL731. Mismatched wiring results in non-functional loads. ❗ Temperature-Dependent Fuse Limits: Sustained high ambient temperature reduces allowable group current. Do not run all channels at full 2A load above 50°C cabinet temperature. ❗ Inductive Load Back EMF: Unsuppressed coils generate voltage transients. Install freewheeling diodes across DC inductive loads to extend transistor service life. ❗ ESD Dangers: Un-grounded handling can damage output drive circuits. Static faults often appear as intermittent channel dropout with no visible external damage.

Replacement Guide:

1. Pre-install: Activate lockout-tagout on rack power and external field supply; back up hardware configuration and photograph wiring.
2. Removal: Unplug terminal block, unlatch module and slide straight out without twisting edge connectors.
3. Install: Seat new unit fully into vacant slot, lock latches, reattach terminal block and replicate all wiring connections.
4. Power-on Test: Restore power, download saved configuration, cycle each output and confirm no fuse fault indicators illuminate.

FAQ (Frequently Asked Questions)

Q: Does this module support hot swapping? A: No. The Series 90-30 architecture does not support live module insertion or removal. Full rack shutdown is mandatory.

Q: What is the difference between and IC693MDL731? A: = positive logic sourcing output. IC693MDL731 = negative logic sinking output. They are not direct drop-in replacements unless field wiring is modified.

Q: Are the internal fuses field-replaceable? A: Yes. If the fuse fault LED activates, inspect field wiring for shorts and replace the blown internal fuse with matching rating. Never uprate fuses.

Q: Can this module be used inside PACSystem RX3i racks? A: No. Form factor and backplane signaling are exclusive to Series 90-30 chassis. It cannot operate within RX3i systems.

Q: What happens if load current exceeds fuse rating? A: The internal fuse opens, the fuse fault LED illuminates, and all outputs within the affected group cease operation. The remaining group continues working normally.

Q: Will hardware configuration transfer directly to a replacement unit? A: I/O configuration imports without modification. After replacement, cycle all outputs and verify each channel switches reliably under load.