Description
3. Key Technical Specifications
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Parameter
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Specification
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Channels
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2 single-ended analog current outputs
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Output Range
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4-20mA (default) / 0-20mA (jumper-selectable)
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Resolution
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12-bit (4μA/LSB for 4-20mA; 5μA/LSB for 0-20mA)
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Update Rate
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5ms per channel (all channels updated simultaneously)
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Accuracy
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±0.5% full scale (FS) @ 25°C; ±1% FS over 0°C–60°C
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Isolation
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1500V RMS (field-to-logic); no channel-to-channel isolation
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Load Resistance
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0–750Ω (4-20mA range); 0–500Ω (0-20mA range)
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Power Consumption
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100mA @ 5V DC (backplane); 215mA @ 24V DC (isolated supply)
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Operating Temperature
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0°C to 60°C (32°F to 140°F)
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Mounting
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DIN rail/panel-mountable (fits 5-slot/10-slot Series 90-30 baseplates)
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GE IC693ALG391
4. Product Introduction
The GE IC693ALG391 is a 2-channel analog current output module designed for GE Series 90-30 PLC systems, enabling precise control of industrial devices (e.g., valves, actuators, pumps) via 4-20mA or 0-20mA signals. It converts 12-bit digital data from the PLC into analog current outputs, with a 5ms update rate suitable for real-time process control.
This module’s 1500V RMS field-to-logic isolation protects the PLC from electrical noise and ground loops, critical for harsh industrial environments. The jumper-selectable output range (4-20mA/0-20mA) allows flexibility for integrating diverse field devices, while the 12-bit resolution ensures accurate signal transmission over long cable runs.
5. Firmware/Software Versions & Upgrade Notes
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Recommended Firmware: v3.0.1 (last stable Series 90-30 release; fixes communication bugs in v2.9.x).
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Compatibility:
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PLC Compatibility: Works with all Series 90-30 CPUs (e.g., IC693CPU331, IC693CPU350).
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Configuration Tools: Programmable via Logicmaster 20/30 or Proficy Machine Edition (no additional drivers required).
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Upgrade Risks:
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Upgrading firmware to v3.0.1 requires a cold restart of the PLC (no hot-swap).
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Downgrading to v2.9.x may cause output drift if calibration data is incompatible.
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6. Frequently Asked Questions (FAQ)
1. Can I hot-swap the IC693ALG391 while the PLC is running?
No. Hot-swapping risks backplane short circuits. Power down the rack, verify 5V/24V stability, then replace. The module’s 100mA backplane draw demands stable power—test with a multimeter before installation.
2. Is the IC693ALG391 compatible with Series 90-70 PLCs?
No. Use IC694ALG391 for Series 90-70 (identical form factor, updated pinout).
3. How do I switch between 4-20mA and 0-20mA output ranges?
Use the jumpers on the I/O terminal board (included with the module). For 4-20mA, leave the jumpers in the default position; for 0-20mA, move the jumpers to the “0-20mA” setting. Verify the range in the PLC software (e.g., Proficy Machine Edition) after changing.
4. What’s the warranty for this “New Surplus” unit?
12 months, covering manufacturing defects. We perform:
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Incoming traceability checks (OEM serial verification).
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24h load test (100mA continuous output).
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Megger insulation test (>10MΩ).
5. Why is this cheaper than OEM but pricier than refurbished?
This is New Surplus: unused stock with full QC (anti-static packaging, calibration backups). Refurbished units often have degraded capacitors or untested isolation—leading to unplanned downtime.
6. How to verify the IC693ALG391’s output accuracy?
Use a loop calibrator to inject a 4-20mA signal into the module. Monitor the
%AQregisters in Proficy—values should match the input. If there’s a discrepancy, check the jumper settings or field wiring (shielded STP cable, ground to “GND” terminal).7. Can I use the IC693ALG391 for voltage output?
No. This module is designed for current output only. For voltage output, use IC693ALG392 (0-10V/±10V).
GE IC693ALG391
Critical Implementation Notes
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Wiring: Use shielded twisted-pair (STP) cable for field connections to reduce EMI. Ground the shield to the module’s “GND” terminal.
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Power Budget: At 100mA/channel, a 10-channel system draws 1A—ensure the PLC’s 5V DC backplane can supply 2A minimum.
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ESD Protection: Use grounded wrist straps during installation. The module’s CMOS outputs are sensitive to >50V ESD.
