Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | Honeywell 10310/2/1 |
| Alternative Part Number | 10310/2/1 CC10800 |
| Manufacturer | Honeywell |
| Product Type | Earth Leakage Detector (ELD) Module |
| System Family | Fail Safe Control (FSC) |
| Supply Voltage | 24 VDC (max. 30 VDC) |
| Supply Current | Max. 60 mA |
| Supported DC Systems | 24 VDC, 48 VDC, 60 VDC, 110 VDC |
| Connection Modes | DC continuous, 1 Hz, 0.25 Hz (switch selectable) |
| Earth Voltage (No Fault) | -12 VDC |
| Earth Voltage (Fault) | -30 to +125 VDC |
| Earth Fault Threshold | 5.5 mA (± 1 mA) |
| Max. Earth Current | 25.0 mA (± 5 mA) |
| Reset Input Voltage (Rst24) | 18 to 70 VDC |
| Reset Input Voltage (Rst110) | 40 to 130 VDC |
| Output Contact Voltage | 115 VDC max. |
| Output Contact Current | 2 A max. |
| Approvals | CE, UL |
| Dimensions | Approx. 20.3 × 15.2 × 2.5 mm |
| Weight | Approx. 0.2 kg |
Main Features and Advantages
Adjustable Connection Modes: The Honeywell 10310/2/1 offers three selectable earth connection strategies via front-panel switch 1. The standard DC position provides continuous earth reference monitoring, while the 1 Hz position accommodates solenoids or relays that could remain energized by negative earth voltage. The 0.25 Hz position enables earth fault location using external current clamp instrumentation, giving maintenance personnel the flexibility to troubleshoot complex grounding issues.
Flip-Flop Fault Memory: When an earth fault is detected, the 10310/2/1 Honeywell sets an internal flip-flop that de-energizes the output relay and maintains the fault state until an intentional reset is performed. This latching behavior ensures that even momentary fault events are captured and indicated, preventing intermittent earth leakage conditions from going unnoticed during unattended operation.
Multiple Reset Options: The Honeywell 10310/2/1 supports three distinct reset methods: manual reset via front-panel switch 2, remote reset through the Rst24 input (18-70 VDC), or remote reset through the Rst110 input (40-130 VDC). This flexibility allows integration with plant control systems for automated fault acknowledgement while retaining local manual reset capability for maintenance activities.
Comprehensive Self-Test: A built-in 1.5 kOhm resistor enables internal earth fault simulation when switch 2 is placed in the TEST position. This manual self-test function verifies both the 10310/2/1 Honeywell detection circuitry and the external earth connection integrity, providing confidence in the module‘s operational readiness before relying on it for safety-critical monitoring.
Wide System Compatibility: The Honeywell 10310/2/1 supports monitoring of 24 VDC, 48 VDC, 60 VDC, and 110 VDC DC systems, making it adaptable to a broad range of FSC deployment configurations. This multi-voltage capability reduces spare parts inventory requirements and simplifies system design across different plant areas with varying DC distribution voltages.
