Product Details
The GE HE693DAC420, also cataloged as the HE693DAC420 Isolated Analog Current Output Module, operates as a dedicated hardware component for converting digital controller commands into 4-20 mA or 0-20 mA current loops within Series 90-30 PLC systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | HE693DAC420 |
| Brand | GE / GE Fanuc |
| Origin | USA |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 90 mA @ 5 VDC / 120 mA @ 24 VDC |
| Number of Channels | 4 Channels |
| Output Range | 4-20 mA or 0-20 mA |
| Resolution | 14 bits (13 bits plus sign D/A resolution) |
| Isolation | 1500 VAC (RMS) Channel-to-Channel and Channel-to-Ground |
| Power Supply | External 24 VDC User-Supplied Loop Power |
| Current Surge on Power-up | 250 mA for 10 ms @ 5 VDC / 900 mA for 30 ms @ 24 VDC |
| Load Impedance | Less than or equal to 1.1 kohm @ 24 V Loop Voltage |
| Maximum Linearity Error | 0.10% Full Scale (4-20 mA) / 0.15% Full Scale (0-20 mA) |
| Relative Humidity | 5% to 95%, non-condensing |
Deterministic Networks and I/O Density Scaling
The HE693DAC420 module integrates into the Series 90-30 backplane to execute deterministic data updates from the main CPU card. High channel-to-channel and channel-to-ground isolation limits electrical noise propagation across the backplane bus interface, preserving communication velocity across expanded sub-rack configurations. Digital-to-analog processing pathways maintain firmware flash compatibility across standard Series 90-30 rack backplanes while providing stable current outputs under dynamic load resistance variations.
Frequently Asked Questions
Q: Does the HE693DAC420 require an external power source to drive the 4-20 mA loops?
A: Yes. The module relies on an external 24 VDC user-supplied power source to energize the isolated output loops in addition to the 5 VDC backplane logic draw.
Q: Can the HE693DAC420 module be installed or removed from the Series 90-30 rack while backplane power is active?
A: No. Power to the Series 90-30 rack must be completely isolated prior to inserting or removing the module to prevent electrical damage to backplane bus pins and internal D/A converter circuitry.
Field Installation Guidelines
- De-energize the Series 90-30 rack power supply and isolate external 24 VDC loop power before mounting or wiring the module.
- Slide the HE693DAC420 module firmly into the designated rack slot until the top and bottom retaining clips latch into the backplane baseplate.
- Wire the external 24 VDC field power supply to the terminal connector, maintaining correct polarity to support the internal isolation circuitry.
- Route 4-20 mA field current loop wiring using twisted-pair shielded cables to prevent inductive noise pickup from adjacent power lines.
- Ground all cable shields at a single Earth ground terminal near the panel entrance to avoid establishing ground loop currents.
- Verify that maximum loop resistance on each output channel does not exceed 1.1 kohms under 24 VDC operation before powering up the system.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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