Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 900G32-0001 |
| Manufacturer | Honeywell |
| Product Type | Digital Input Module (32-Channel, Sinking) |
| Platform | ControlEdge HC900 Hybrid Process Controller |
| Input Channels | 32 (Sinking) |
| Channel Grouping | 2 Groups × 16 Points, Galvanic Isolation Between Groups |
| Input Voltage Range | 10 VDC to 32 VDC |
| Peak Voltage | 32 VDC |
| ON Voltage Threshold | 9.5 VDC Minimum |
| OFF Voltage Threshold | 3.5 VDC Maximum |
| Input Current | 1.7 mA @ 12 VDC; 3.5 mA @ 24 VDC |
| Response Time | ≤5 ms (OFF→ON and ON→OFF) |
| Isolation | Group-to-Group and Input-to-Chassis, 30 VDC Max |
| Backplane Power Loading | 5 V: 215 mA Max; 24 V: 0 mA |
| Operating Temperature | 0°C to +60°C |
| Terminal Block | 36-Pin European Screw Terminal (Compatible with 900TCK-0200) |
| Dimensions | 137 mm H × 35.6 mm W × 66 mm D |
| Weight | Approximately 175 g |
Main Features and Advantages
High-Density Channel Count: The 900G32-0001 packs 32 input points into a single slot, a density that directly translates to reduced cabinet footprint and lower per-channel cost. For projects where panel space is at a premium or where expansion capacity is limited, the 900G32-0001 allows engineers to accommodate a large number of discrete status signals without adding additional racks or remote I/O drops.
Group Isolation for Fault Containment: The 900G32-0001 splits its inputs into two independently isolated groups of 16 channels each. This isolation architecture ensures that a field wiring fault, ground loop, or voltage transient affecting one group does not propagate to the other, preserving control functionality for half the module‘s channels even under adverse conditions. The 30 VDC group-to-group and input-to-chassis isolation rating provides a robust barrier against common-mode noise.
Wide Input Range with Noise Immunity: The 900G32-0001 accepts input voltages from 10 VDC to 32 VDC, far exceeding the typical 24 VDC nominal field supply. This extended range tolerates voltage drops across long cable runs and ensures reliable operation even when supply voltage sags. The defined switching thresholds—9.5 VDC minimum for ON and 3.5 VDC maximum for OFF—create a hysteresis window that prevents contact bounce and electrical noise from causing spurious state transitions.
Diagnostic Visibility: Every input channel on the 900G32-0001 has a dedicated LED indicator, giving technicians immediate visual confirmation of signal state at the module faceplate. This granular visibility accelerates troubleshooting during commissioning and reduces mean time to repair by eliminating the need to trace signals through wiring diagrams or interrogate the control system for basic state information.
