Product Details
Configured for contact status monitoring and discrete signal processing in ControlEdge HC900 rack assemblies, the Honeywell 900G01-0202 (900G01 Digital Input Module) provides direct physical/electrical execution. Operating with 16 single-ended channels, the unit evaluates voltage contact states supplied at 15 VDC nominal from the controller. The hardware features rapid signal transitions with an OFF-to-ON response time under 4 ms and an ON-to-OFF response time under 6 ms at 2.6 mA nominal switching current, routing discrete data directly to the backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 900G01-0202 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 0.354 kg (2.0 kg shipping weight) |
| Dimensions | 137 mm H x 35.6 mm W (5.4 in H x 1.4 in W) |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Backplane loading: 5 VDC at 130 mA max; 24 VDC at 40 mA max |
| Input Channels | 16 single-ended input channels |
| Contact Voltage | 15 VDC nominal (supplied by controller) |
| Max Contact Resistance | 1000 ohms |
| Switching Current | 2.6 mA nominal |
| Response Time | OFF to ON: 4 ms max; ON to OFF: 6 ms max |
| Isolation | Galvanic isolation between field wiring and module backplane |
Channel-to-Channel Isolation & DCS Field Interfacing
The Honeywell 900G01-0202 digital input module uses internal galvanic isolation to separate incoming field wiring channels from microcontroller and backplane logic paths. This structural isolation limits high-voltage transients and ground loop currents from transferring back to central controller electronics. Isolating the 16 single-ended discrete channels prevents electrical noise propagation across shared system backplanes, preserving the signal integrity of adjacent analog I/O processing 4-20 mA HART loop protocol instruments and process sensors.
Frequently Asked Questions
Q: What is the maximum contact resistance permitted for field dry contact switches connected to the 900G01-0202?
A: The input channel circuitry supports field contact wiring with a maximum total loop contact resistance of 1000 ohms.
Q: What are the backplane current draw requirements for the 900G01-0202 module during operation?
A: The module draws up to 130 mA maximum from the 5 VDC backplane supply rail and up to 40 mA maximum from the 24 VDC supply rail.
Field Installation Guidelines
- Insert the 900G01-0202 module into the designated slot of the ControlEdge HC900 rack until top and bottom retention tabs snap into the chassis.
- Terminate external discrete field wiring onto the corresponding removable terminal block (RTB) while ensuring loop resistance remains under 1000 ohms.
- Connect all field cable drain wires to the dedicated cabinet ground bus bar to maintain isolation efficacy against electromagnetic interference.
- Maintain unobstructed vertical convective cooling clearance above and below the 137 mm module housing inside the enclosure.
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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