Description
1. At-A-Glance Executive Brief
- Model: VR-H4116
- Brand: HIMA
- Part Type: Safety Relay Module
- Lifecycle Status: Active / Legacy System Migration Support
- System Compatibility: HIMA HIMatrix and HIMax Safety Systems
- Weight: 0.30 kg
2. Technical Introduction
Plants operating high-integrity safety loops frequently encounter insulation breakdown or channel-coupling anomalies that threaten emergency shutdown reliability. The HIMA VR-H4116 functions as a compact safety relay module engineered to handle fault-tolerant signal switching within safety instrumented architectures. It provides galvanic isolation between field-side actuators and low-voltage logic execution layers, preventing transient voltage spikes or ground loops from corrupting critical safety-related control functions.
3. Core Technical Specifications
| Parameter | Value |
| Manufacturer | HIMA Paul Hildebrandt GmbH |
| Input Voltage | 24 VDC (-15% to +20%) |
| Current Consumption | ~20 mA (Power Dissipation: 1W to 2W) |
| Output Contacts | 1 sealed, potential-free change-over relay (AgNi, hard gold-plated) |
| Switching Voltage Range | 1 mV to 250 VAC/VDC |
| Max Switching Current | 4 A (Fused via 4 A time-lag internal fuse) |
| Switching Capacity (AC/DC) | Up to 1000 VA (AC); 120 W at 30 VDC / 40 W at 250 VDC |
| Response / Reset Time | ~7 ms response / ~5 ms reset |
| Operating Temperature | -25°C to +50°C |
4. Field Engineer’s Tech Notes
- Inductive Load Suppression: Always install dedicated flyback diodes or RC snubber networks across external inductive loads tied to the output change-over contacts. Omitting arc suppression on solenoid valves or relay coils will rapidly pit the hard gold-plated AgNi contacts, causing premature contact welding and failing cyclic proof tests.
- Internal Fuse Replacement: The unit utilizes an internal 4 A time-lag fuse to protect against short circuits. When troubleshooting a dead output channel, verify the fuse status before condemning the entire module, ensuring replacement elements match identical time-lag ratings to maintain SIL compliance.
5. Adaptive QA & Testing Protocol
Before inventory dispatch, each HIMA VR-H4116 safety relay undergoes bench verification utilizing a 24VDC power source simulation. Testing includes verifying coil pull-out and drop-out voltage thresholds, executing a minimum of 50 switching cycles under loaded conditions, and performing a high-potential insulation resistance test across the open contacts to confirm galvanic isolation boundaries. Verified test logs or serialized video records are available upon request to procurement teams.
6. Buyer’s FAQ
- What operational warranty comes with this safety relay?All New Surplus (NSFP) and fully refurbished VR-H4116 units carry an inclusive 12-month operational warranty from the invoice date.
- Is this component certified for explosive atmospheres?Yes, the module carries ATEX Zone 2 ratings, though field deployment requires installation inside an enclosure meeting a minimum of IP54 protection.
- What is the shipping turnaround for urgent plant requirements?In-stock parts ship same-day from our domestic US warehouse via priority freight carriers to reduce unplanned downtime.
