Product Core Brief

• Model:
• Brand: GE Fanuc / GE
• Series: Genius Field Control (IC670 Distributed I/O)
• Core Function: 8-channel isolated voltage-source analog output module, converts digital Genius bus data to bipolar ±10VDC analog signals for valve positioners, analog drives and field instruments.
• Product Type: Isolated Voltage Source Analog Output Module
• Key Specs: 8 fully isolated channels | ±10 VDC sourcing output | 14-bit resolution | Requires external 24VDC field supply Note: Discontinued legacy Genius distributed I/O hardware; factory new stock exhausted, surplus and refurbished units widely traded. The -JA suffix denotes specific PCB hardware revision. This module belongs to Genius remote I/O system; cannot be directly inserted into Series 90-30 or RX3i backplanes without Genius base carrier. Hot swap is not supported on Genius field stations.

Key Technical Specifications

• Channel Layout: 8 galvanically isolated voltage-source analog outputs
• Output Range: Fixed −10 VDC ~ +10 VDC
• Resolution: 14-bit DAC
• Full Scale Accuracy: ±0.1% FS at 25°C
• Minimum Load Resistance: 5 kΩ per channel
• Update Rate: Configurable Genius bus scan cycle dependent
• External Field Supply: 24 VDC (18–30 VDC operating range)
• Isolation Rating: Channel-to-bus galvanic isolation
• Status Indicators: Module OK indicator
• Backplane Power Draw (Genius carrier): Dependent on base station power supply
• Operating Temperature: 0°C ~ +55°C horizontal cabinet mounting
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Standard IC670 Genius I/O module; mounts into IC670CHS002 Genius carrier baseplate
• Compatible System: Series 90-30 / RX3i CPUs equipped with Genius bus master modules (IC693BEM331 / IC694BEM331)
• Supported Software: Logicmaster 90, Proficy Machine Edition
• Topology: Connects to Genius differential RS485 serial bus

Product Introduction

This unit is an analog output module for GE Genius distributed remote I/O field stations. It receives digital setpoint values over the Genius bus and generates isolated ±10V analog voltage signals to control modulating equipment.

Voltage-source topology supplies positive/negative voltage to field loads. Channel isolation prevents field noise from propagating onto the Genius communication bus. Widely deployed on legacy process plant retrofit projects using Genius distributed I/O architecture, where remote panels are linked to main PLC via long-distance Genius bus cabling.

Important: This is voltage output only. It cannot generate 4–20mA current signals without external precision load resistors.

QA & Testing SOP (Transparency Building)

1. Incoming Inspection: Verify part marking and -JA revision suffix. Inspect backplane edge pins for bending or corrosion; check terminal connector housing for cracks.
2. Live Testing: Install into validated IC670CHS002 Genius carrier baseplate. Establish Genius bus communication, download test output values, verify ±10V range and channel isolation over continuous 24-hour test cycle.
3. Electrical Testing: Use Fluke 115 to monitor output voltage 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 confirming channel output validation prior to shipment.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ No Hot Swap Support: Genius field station carriers do not support hot swap. Any module insertion or removal requires full station power shutdown to avoid Genius bus communication failure. ❗ Hardware Platform Restriction: Must install on IC670CHS002 Genius carrier baseplate. Cannot plug directly into Series 90-30 or RX3i CPU backplanes. ❗ Voltage-only Limitation: This module outputs ±10V voltage signals. It is not a current loop module; 4–20mA transmitters require separate Genius analog output modules. ❗ Minimum Load Resistance: Load resistance below 5kΩ causes voltage sag and degraded accuracy. Validate actuator input impedance before wiring. ❗ Genius Bus Termination: Maintain proper 120Ω termination at both ends of the Genius RS485 bus to avoid intermittent communication errors. ❗ ESD Dangers: Un-grounded handling damages analog DAC and bus interface circuits. Static faults manifest as drifting analog outputs or Genius bus dropout.

Replacement Guide:

1. Pre-install: Activate lockout-tagout on Genius field station power; back up Genius bus configuration and photograph analog field wiring.
2. Removal: Disconnect analog field wiring, unlatch module and slide straight out without twisting backplane connectors.
3. Install: Seat new unit fully into vacant slot on IC670CHS002 carrier, lock latches, re-establish all analog wiring connections.
4. Power-on Test: Restore field station power, confirm module OK LED status; verify Genius bus detects the field station, download saved configuration and execute full analog channel output testing.

FAQ (Frequently Asked Questions)

Q: Does this module support hot swapping? A: No. Genius field station architecture does not support live module insertion/removal. Full station power shutdown is mandatory.

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

Q: Can this module connect directly to Series 90-30 CPU backplane? A: No. It is Genius remote I/O module. Requires IC670CHS002 carrier and Genius bus master module on the main PLC rack.

Q: Can this module output 4–20mA current signals? A: No, native ±10V voltage output only. External precision resistors are required to convert voltage to current loops.

Q: Can both voltage and current output modules be mixed on the same Genius field station? A: Yes, multiple analog and discrete I/O modules can be fitted on one IC670CHS002 carrier subject to power budget limits.

Q: Will saved Genius configuration load directly onto a replacement module? A: Genius network configuration does not reside on the module itself. After replacement, confirm the field station node address and verify all analog output channels operate correctly.

Q: What is the maximum cable length for the Genius bus? A: Maximum 213 m at 153.6 kbps; lower baud rates allow longer cable runs, and 120Ω termination is required at bus endpoints.