High-Density Switching Solution
This board delivers 32 relay outputs in a compact form factor for space-constrained control cabinets. It handles high-density discrete switching requirements across multiple process loops simultaneously. Many facilities choose this module for its exceptional contact durability and fast response times. The unit integrates seamlessly into existing Yokogawa DCS architectures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ARM55C ARM55C-000 |
| Dimensions | 250 mm × 150 mm × 50 mm (W × H × D) |
| Weight | 1.20 kg |
| Power Supply | 24 V DC ±10% |
| Power Consumption | 12 W typical (all relays energized) |
| Output Channels | 32 form-A (SPST-NO) relays |
| Contact Rating | 2 A at 250 V AC / 30 V DC |
| Switching Voltage | 250 V AC / 30 V DC maximum |
| Switching Current | 2 A maximum per contact |
| Contact Resistance | ≤100 mΩ initial |
| Mechanical Life | 10,000,000 operations |
| Electrical Life | 50,000 operations at rated load |
| Response Time | ≤15 ms (energize), ≤10 ms (de-energize) |
| Coil Voltage | 24 V DC |
| Coil Power | 0.5 W per relay |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -20°C to +70°C |
| Humidity Range | 5% to 85% RH (non-condensing) |
| Status Indicators | 32 LED indicators (one per channel) |
| Terminal Type | 4 × 16-pin ribbon cable connectors |
| Mounting | Backplane or DIN rail (with optional adapter) |
| Certifications | CE, UL, CSA |
Output Configuration and Channel Layout
This board organizes its 32 relays into four banks of eight channels each. Each bank features a separate common terminal for flexible wiring arrangements. The form-A contacts provide normally open switching for simple on-off control tasks. This configuration suits most digital output applications in process automation.
Power Consumption and Thermal Management
The unit consumes 12 W with all relays in the energized position. Individual relays draw 0.5 W from the 24 V DC supply. The board dissipates heat efficiently through its enlarged surface area. Proper cabinet ventilation ensures stable operation within the rated temperature range.
Mechanical Construction and Dimensions
This module measures 250 mm wide and weighs approximately 1.20 kg. The increased channel count requires a larger PCB compared to lower-density variants. Four ribbon cable connectors facilitate quick wiring to external termination panels. The board mounts on standard Yokogawa backplanes using dedicated guide rails.
Status Indication and Diagnostics
Thirty-two individual LEDs display the real-time status of every output channel. A glowing LED indicates the corresponding relay coil has received an energize command. This comprehensive visual feedback simplifies loop testing and fault finding. Control room operators can monitor output states without physical panel access.
Contact Performance and Switching Lifespan
These relays achieve 10 million mechanical operations without electrical loading. Under full rated loads, the contacts sustain 50,000 switching cycles reliably. This performance meets the demands of frequent on-off applications like burner control. Gold-plated contacts minimize oxidation and maintain low contact resistance throughout the service life.
Safety Approvals and Quality Standards
The ARM55C ARM55C-000 holds CE, UL, and CSA certifications for global industrial use. These marks guarantee compliance with electrical safety and EMC directives. Each unit undergoes 100% functional testing before shipment. This thorough quality process ensures trouble-free installation and long-term dependability.
Details
| Weight | 1.2 kg |
|---|---|
| Dimensions | 250 × 150 × 50 mm |
Reviews
There are no reviews yet.