Core Functionality and Application
This board delivers reliable switching capabilities for discrete control applications. It provides 16 independent relay outputs for driving solenoid valves, motor starters, and alarm devices. Industrial facilities depend on this module for safe load management across production lines. The unit ensures consistent performance in demanding process automation environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ARM15A sarm15a |
| Dimensions | 150 mm × 110 mm × 40 mm (W × H × D) |
| Weight | 0.65 kg |
| Power Supply | 24 V DC ±10% |
| Power Consumption | 6 W typical (all relays energized) |
| Output Channels | 16 form-C (SPDT) relays |
| Contact Rating | 5 A at 250 V AC / 30 V DC |
| Switching Voltage | 250 V AC / 30 V DC maximum |
| Switching Current | 5 A maximum per contact |
| Contact Resistance | ≤50 mΩ initial |
| Mechanical Life | 20,000,000 operations |
| Electrical Life | 100,000 operations at rated load |
| Response Time | ≤10 ms (energize), ≤5 ms (de-energize) |
| Coil Voltage | 24 V DC |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -20°C to +70°C |
| Humidity Range | 5% to 85% RH (non-condensing) |
| Status Indicators | 16 LED indicators (one per channel) |
| Terminal Type | Pluggable screw terminal blocks |
| Wire Gauge | 0.2 mm² to 2.5 mm² |
| Certifications | CE, UL, CSA, TÜV |
Relay Output Configuration
Each of the 16 channels uses a form-C contact arrangement with normally open and normally closed terminals. The relays handle switching voltages up to 250 V AC or 30 V DC. Individual contacts carry a continuous current of 5 A maximum. This configuration supports both AC and DC load types without additional interfacing components.
Power Management and Energy Storage
This board draws approximately 6 W when all relays remain in the energized state. The unit does not incorporate onboard energy storage devices for contact operation. Coil suppression diodes protect the driving circuitry from inductive kickback during de-energization. This protective measure enhances overall system reliability significantly.
Physical Characteristics and Mounting
The assembly measures 150 mm wide with a total weight of 0.65 kg. This form factor fits standard Yokogawa mounting racks without modifications. Pluggable terminal blocks simplify field wiring and future maintenance tasks. The board mounts securely using four M4 screws on the designated backplane.
Visual Status Indication
Sixteen front-facing LEDs provide immediate visual feedback for each output channel. An illuminated LED signifies the corresponding relay coil is energized. This direct indication assists operators during loop checks and troubleshooting. Technicians can quickly verify output states without using external meters.
Durability and Operational Lifespan
The relays offer a mechanical life of 20 million operations under no-load conditions. Under rated electrical loads, these contacts last for 100,000 switching cycles. This long service life reduces replacement frequency and maintenance costs. The board’s robust construction withstands typical industrial vibration and temperature fluctuations.
Certifications and Safety Compliance
The ARM15A sarm15a carries CE, UL, CSA, and TÜV certifications for international acceptance. These approvals confirm compliance with stringent safety and electromagnetic compatibility standards. Every board passes functional testing before leaving the factory. This rigorous quality control guarantees dependable field performance.
Details
| Weight | 0.65 kg |
|---|---|
| Dimensions | 150 × 110 × 40 mm |
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