Product Core Brief

• Model:
• Brand: GE Fanuc / GE
• Series: Series 90-30 PLC
• Core Function: 8-channel analog output module, converts digital register values to configurable voltage/current signals for control valves, positioners and variable frequency drives.
• Product Type: Multi-Channel Analog Output Module
• Key Specs: 15/16-bit resolution (range dependent) | Software-selectable ranges | Requires external 24VDC field supply Note: Discontinued legacy hardware; factory new stock scarce, surplus and refurbished units widely traded. Base hardware variant; suffix variants (-B, -C) are updated PCB revisions. Hot swapping is not supported on Series 90-30 backplanes.

Key Technical Specifications

• Channel Layout: 8 single-ended analog output channels
• Supported Signal Ranges (per-channel software configuration): 0–10 V, ±10 V, 0–20 mA, 4–20 mA
• Resolution: 4–20mA: 0.5 µA per LSB 0–20mA: 0.625 µA per LSB Voltage ranges: 0.3125 mV per LSB
• Full Module Update Time: 8 ms for all 8 channels
• Load Limits: Voltage mode: Minimum 2 kΩ load resistance Current mode: Maximum 850 Ω load resistance
• Backplane Power Draw: 110 mA @5 VDC
• External Field Supply: 20–30 VDC nominal 24 VDC; max 315 mA
• Isolation Rating: 1500 VAC 1-minute withstand between field circuits and logic backplane
• Diagnostics: Open-circuit detection on current loop channels, external field power loss fault reporting
• Status LEDs: Module Power OK, User Supply OK indicator
• Operating Temperature: 0°C to 60°C horizontal cabinet mounting
• Storage Temperature: -40°C to 85°C
• Form Factor: Single-width Series 90-30 rack slot
• Compatible Chassis: IC693CHS391, IC693CHS392, IC693CHS397, IC693CHS398
• Supported Programming Software: Logicmaster 90, Proficy Machine Edition
• Fail-Safe Function: Configurable output state (hold last value / preset value) on communication loss

Product Introduction

This unit delivers analog modulating control for continuous process applications. Each channel can be independently set to voltage or current mode without hardware jumpers. If communications between module and CPU are interrupted, outputs can maintain last value or drive to a predefined safe level.

Built-in open-loop detection monitors 4–20mA loops for broken wiring, enabling early fault alarming. It supports installation in both main chassis and serial expansion remote I/O racks, widely used on Series 90-30 machine and plant retrofit projects.

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking. Inspect backplane edge pins for bending or corrosion; examine terminal connector housing for cracks.
2. Live Testing: Install into validated Series 90-30 rack, apply backplane power and external 24VDC field supply. Perform full-scale ramp testing on all channels with precision load resistors over a continuous 24-hour cycle.
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 firmware revision. Photograph terminal wiring layout before disassembly.
5. Final QC & Packaging: Place unit inside anti-static shielding. Attach dated QC test tag listing channel calibration test results prior to shipment.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ No Hot Swap Support: Series 90-30 backplanes lack hot-swap bus logic. Live removal crashes rack communications and risks permanent backplane trace damage. Full rack power shutdown mandatory. ❗ Load Resistance Boundary: Current loops with load resistance above 850Ω trigger clipped output and open-circuit fault alarms. Verify actuator impedance before wiring. ❗ External Field Supply Mandate: Backplane logic power cannot drive field loads. Loss of the external 24VDC supply forces all outputs to configured fail-safe state. ❗ Channel Wiring Separation: Do not route high-power cables alongside analog wiring to minimize induced noise that causes signal drift. ❗ ESD Dangers: Un-grounded handling can degrade analog output circuitry. Static damage typically manifests as slow channel offset drift after commissioning. ❗ Revision Mix Note: can mechanically interchange with -B/-C revisions, always complete post-replacement calibration checks to eliminate minor measurement offsets.

Replacement Guide:

1. Pre-install: Activate lockout-tagout on rack power and external field supply; back up hardware configuration and photograph all analog wiring connections.
2. Removal: Disconnect terminal block wiring, unlatch module and slide straight out without twisting backplane connectors.
3. Install: Seat new unit fully into vacant slot, lock latches, re-establish all field wiring connections.
4. Power-on Test: Restore power, download saved configuration, run full-scale channel verification and clear all diagnostic fault codes.

FAQ (Frequently Asked Questions)

Q: Does this module support hot swapping? A: No. Series 90-30 architecture does not implement hot-swap functionality. Complete rack power shutdown is required before removing or installing the unit.

Q: What is the difference between and IC693ALG392C? A: Base catalog number defines identical core analog output functionality. The -C suffix represents a specific PCB hardware revision. Mechanically interchangeable, always perform full channel calibration after cross-revision replacement.

Q: Can this module be installed 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: Can channels mix voltage and current modes on the same module? A: Yes. Each channel can be independently configured for voltage or current ranges in programming software. No hardware changes required.

Q: Does this module support HART protocol instruments? A: No. The analog circuits are standard analog outputs without HART modulation capability.

Q: Will saved configuration load directly onto a replacement unit? A: I/O configuration imports without modification. After replacement, verify each channel’s full-scale output accuracy and confirm open-loop fault detection functions correctly.

Q: Can this module be fitted into serial expansion remote racks? A: Yes, compatible with IC693CHS392 remote expansion baseplates, though hot-swap rules remain unavailable for all Series 90-30 backplanes.