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PVA-KL26: KOPPEN & LETHEM Digital Signal Module / Relay Module
The PVA-KL26 is a 12/24 VDC digital signal module / relay module manufactured by KOPPEN & LETHEM of the Netherlands. It is widely used in industrial control and marine applications, integrating a plug-in LED status indicator and RC circuit (for arc suppression and voltage transient protection).
Core Features
| Parâmetro | Especificação |
| Manufacturer | KOPPEN & LETHEM (sometimes associated with Doedijns) |
| Tensão operacional | 12/24 CCV (wide‑voltage design) |
| Funções principais | Signal conversion, switching control, status indication |
| Key Components | Plug‑in LED indicator, RC circuit (arc suppression) |
| Mounting Style | Plug‑in design for quick installation, removal and maintenance |
| Campos de aplicação | Industrial automation, ship control systems, hydraulic equipment control |
Vantagens do produto
- Intuitive Status Monitoring: LED indicator displays real-time operating status, reducing the risk of misoperation
- Proteção de Circuito: Built-in RC circuit effectively suppresses arcing and voltage transients, extending service life
- Fácil instalação: Plug-in design saves maintenance time and cost
- Adaptabilidade Ambiental: Suitable for harsh industrial and marine environments
Aplicações Típicas
The PVA-KL26 is commonly used for:
Signal conversion and control in marine automation systems
Remote control circuits for hydraulic machinery
Status monitoring and alarm systems for industrial equipment
Relay contact protection and signal amplification
Notas
- Ensure the supply voltage is within 12-24 VDC to avoid overvoltage damage
- Observe correct polarity during installation to prevent damage to the LED indicator and internal circuits
- The RC circuit must be matched to the load for optimal arc suppression
- For use in dry, dust-free environments only; additional protection is required in humid conditions
PVA-KL26 Detailed Technical Specification Manual
(KOPPEN & LETHEM Digital Signal / Relay Module)
The PVA-KL26 is a 12/24 VDC digital signal module / relay interface module specially designed by KOPPEN & LETHEM (Holanda) for industrial and marine environments. It integrates status indication and arc suppression functions, ideal for signal conversion and control under harsh operating conditions.
- Parâmetros elétricos principais
| Parâmetro | Valor | Observações |
| Tensão operacional | 12/24 CCV (wide‑voltage compatible) | Polarity protection, reverse‑connection resistant |
| Control Input Signal | 24 VDC logic level | Compatible with standard PLC digital outputs |
| Contact Rating | 2 A @ 24 CCV / 1 A @ 250 VAC | Carga resistiva; derate for inductive loads |
| LED Indicator | Plug‑in red LED | Lights up when powered, clear status visibility |
| RC Arc Suppression Circuit | Built‑in standard RC network | Suppresses contact arcing and voltage transients, extends contact life |
| Insulation Resistance | ≥ 100 MΩ (at 500 CCV) | Between input‑output‑ground |
| Dielectric Strength | 1500 VAC for 1 minuto | Between input‑output‑ground |
| Consumo de energia | < 1 C | Low power, suitable for continuous operation |
- Mecânico & Características Físicas
| Parâmetro | Valor | Observações |
| Montagem | Padrão 35 mm DIN rail mounting | Snap‑in design for easy installation/removal |
| Module Dimensions | C 22.5 mm × H 90 mm × D 60 milímetros | Standard DIN rail module size |
| Peso | Aprox.. 80 g | Lightweight, economiza espaço no armário |
| Connector Type | Plug‑in terminal block | Accepts 2.5 mm² wire, tool‑free wiring |
| Ingress Protection | IP20 | For indoor control cabinet use |
| Material da Habitação | Flame‑retardant ABS plastic | UL94 V‑0 rated, high fire resistance |
III. Environmental & Condições Operacionais
| Parâmetro | Valor | Observações |
| Temperatura operacional | −25 °C ~ +70 °C | Wide temperature range for marine/industrial use |
| Temperatura de armazenamento | −40 °C ~ +85 °C | Safe storage under extreme temperatures |
| Relative Humidity | 5% ~ 95% (non‑condensing) | Adaptable to high‑humidity marine environments |
| Vibração & Shock | IEC 60068‑2‑6 / IEC 60068‑2‑27 | Complies with marine and industrial anti‑vibration standards |
| EMC | EM 55011 / EN 61000‑6‑2 | Immune to electromagnetic interference, suitable for industrial automation |
- Pin Configuration & Wiring Definition
(Standard 6-pin terminal block)
| Pin No. | Function Definition | Wiring Description |
| 1 | V+ (Positive Power) | Connect to 12/24 VDC positive |
| 2 | V− (Negative Power) | Connect to 12/24 VDC negative / GND |
| 3 | IN (Signal Input) | Connect to control signal (24 VDC active high) |
| 4 | COM (Comum) | Relay contact common terminal |
| 5 | NÃO (Normalmente aberto) | Closed when relay is energized |
| 6 | NC (Normalmente fechado) | Closed when relay is de‑energized |
- Detailed Functional Features
- Arc Suppression Technology
Built-in RC snubber circuit (padrão: 100 Oh / 0.1 μF) absorbs back EMF from inductive loads at contact break, effectively suppressing arcing and extending contact life by 3-5 vezes.
- Status Monitoring System
Red LED provides real-time module status indication
Simple fault diagnosis: LED off = power fault; LED on but no contact action = internal circuit fault
- Projeto de Segurança
Polarity protection prevents damage from reverse power connection
Overcurrent protection guards against output short circuits
Surge voltage suppression protects internal electronic components
- Application Limitations & Notas
Adaptação do tipo de carga
Cargas indutivas (motores, válvulas solenóides): recommended derating to 50% of rated value
Capacitive loads (capacitores, lamps): current-limiting resistor required to prevent inrush current
Especificações de instalação
Avoid installation near heat sources (> 70 °C)
Maintain at least 5 mm clearance around the module for heat dissipation
Ensure secure wire crimping during wiring to prevent poor contact
Diretrizes de Manutenção
Regularly check LED status and terminal tightness
Insulation test recommended every 6 months in harsh environments
Replace the entire module if faulty; internal repair is not recommended
VII. Modelos Alternativos & Compatibilidade
| Modelo Alternativo | Marca | Compatibility Description |
| PVA‑KL26‑EX | KOPPEN & LETHEM | Intrinsically safe version for hazardous areas |
| RM22UA02 | Schneider Elétrica | Functionally compatible, slight dimensional differences |
| DILM25‑10 | Siemens | Higher contact capacity, usable as alternative |
PVA-KL26 Standard Pin / Terminal Configuration
This module uses a 6-pin plug-in screw terminal block.
When facing the front of the module with terminals downward, terminal numbers are 1 para 6 from left to right.
| Terminal No. | Marcação | Descrição da função |
| 1 | IN+ | Positive digital control signal input (24 CCV) |
| 2 | IN− | Negative signal input / common ground |
| 3 | V+ | Positive operating power (12/24 CCV) |
| 4 | V− | Negative operating power / GND |
| 5 | NÃO | Normally open relay output contact |
| 6 | COM | Relay contact common terminal |
Important Notes
- This model has only NO (normalmente aberto) contatos, no NC (normalmente fechado)
- Input with reverse polarity protection; LED lights when IN+ is active
- Built-in RC snubber on output allows direct driving of inductive loads such as solenoids and coils
- Terminal suitable wire cross-section: 0.5-2.5 mm²
