Schneider RXM4ABF7 Auxiliary Relay

Segmento	Código	Significado
RXM	RXM	Basic identifier for Schneider Zelio series plug-in miniature auxiliary relays
4	4	Contact quantity: 4 change-over contacts (4 C/O / 4PDT), fits 14-pin socket base
AB	AB	Functional features: with lockable test button + mechanical indicator window; 1F7 = without LED, 2F7 = with LED
x	1-2	LED status: 1 = No LED, 2 = With LED indicator
F7	F7	Tensão da bobina: 120V e, 50/60Hz

Observação: RXM4ABF7 provided by user is an incomplete model. The full models are RXM4AB1F7 (without LED) and RXM4AB2F7 (with LED).

Especificações básicas

Parâmetro	Valor	Observações
Série de produtos	Harmony Zelio RXM	Industrial-grade plug-in miniature relay
Configuração de contato	4 C/O (4 conjuntos de contatos de mudança, 4 NÃO + 4 NC)	14-pin Faston flat terminals
Rated Load Current	6A @ 250V AC / 6A @ 28V DC	Compliant with IEC standard
UL Rated Current	8A @ 30V DC / 6A @ 277V AC	Padrão norte-americano
Max Switching Voltage	250V CA/CC	IEC standard
Max Switching Capacity	1500VA (AC) / 168C (CC)	Under rated working condition
Min Switching Capacity	170mW (10mA @ 17V)	Suitable for low-level signal circuits
Tensão da bobina	120V e, 50/60Hz	Corresponding to F7 code
Consumo de energia da bobina	Aprox.. 1020mW	Typical value
Vida útil mecânica	≥10⁷ operations	No-load operation
Vida útil elétrica	≥10⁵ operations	Under rated load
Frequência operacional	≤18000 times/hour (sem carga), ≤1200 times/hour (on-load)	–
Dimensão (L×A×P)	21mm × 27mm × 35mm	Tamanho compacto, save cabinet space
Tipo de montagem	Tipo de plug-in, compatible with RXMZE series sockets	por exemplo. RXMZE2S114M (14-alfinete)
Contact Material	Silver-nickel alloy (AgNi) with gold-plated flash layer	Improve conductivity and durability
Temperatura operacional	-40°C ~ +55°C	Ampla faixa de temperatura para ambientes industriais
Certificações	CE, CSA, UL, EN/IEC, RoHS	Meet international safety standards

Marca	Modelo	Matching Level	Descrição da diferença
Omron	MY4N-GS AC120V	★★★★★	4PDT, 6UM, with LED, 14-alfinete, substituição direta
Siemens	3RT2017-1BB41	★★★★☆	4PDT, 6UM, with LED, verify pin compatibility
ABB	CR-M4SS AC120V	★★★★☆	4PDT, 6UM, with test button, slight size difference
Contato Fênix	REL-MR-120AC/21HC/4	★★★★☆	4PDT, 6UM, with LED, same socket mounting way
Weidmüller	DRM570730LT	★★★★☆	4PDT, 6UM, with LED, 120Bobina V CA

AC Coil (F7=120V AC, B7=24V AC, P7=230V AC)

DC Coil (BD=24V DC, JD=12V DC, MD=220V DC)

5.1 Falhas de contato (Mais Comum)

Fenômeno de falha	Causa	Soluções
Soldagem por contato	Sobrecarga, electric arc discharge, contact wear	1. Check overload current
		2. Install RC snubber circuit to suppress arc
		3. Replace relay for severe damage
Poor Contact Conductivity	Oxidação de contato, dust contamination, contact deformation	1. Clean contacts with dedicated cleaner
		2. Check contact pressure
		3. Replace burnt relay
Increased Contact Resistance	Thickened oxide layer on contact surface	1. Polish contact surface gently with fine sandpaper
		2. Match load properly

5.2 Falhas na bobina

Fenômeno de falha	Causa	Soluções
Burnt Coil	Sobretensão, long-term energization, high ambient temperature	1. Stabilize power supply voltage
		2. Optimize control circuit to avoid continuous power-on
		3. Improve heat dissipation
Coil No Response	Circuito aberto da bobina, fiação errada, power failure	1. Meça a resistência da bobina com multímetro (normal: hundreds of ohms)
		2. Check wiring connection
		3. Confirm power supply status
Coil Buzzing Noise	Uneven armature surface, damaged core short-circuit ring	1. Clean and flatten armature and iron core
		2. Replace faulty relay

5.3 Mechanical Faults

Fenômeno de falha	Causa	Soluções
Slow Action / Falha ao reiniciar	Dust & oil intrusion, spring deformation, vibration displacement	1. Clean internal components
		2. Adjust spring tension
		3. Fasten installation to reduce vibration
Invalid Test Button	Button mechanical jamming, internal spring damage	1. Clean button mechanism
		2. Replace relay if unreparable

Applicable Fields

Automação Industrial: PLC signal amplification, motor control circuit, inverter start-stop control
Automação Predial: HVAC damper & valve control, water pump logic control, controle de iluminação
Sistema de energia: Switchgear secondary circuit, protection signal switching, instrument signal isolation
Comida & Bebida: Production line interlock control, safety door signal feedback, temperature control circuit
Indústria Automotiva: Welding workshop equipment control, robot signal relay, production line safety circuit

Casos de aplicação típicos

Caso 1: Blast Furnace Hydraulic Station Control in Steel Plant

Aplicativo: Drive hydraulic solenoid valves to control furnace top equipment

Modelo: RXM4AB2BD (24Em DC, with LED)

Effect: Quick fault diagnosis via lockable test button, reduce downtime by 40%

Caso 2: HVAC System for Commercial Buildings

Aplicativo: Control fan coil electric valves and fresh air damper actuators

Modelo: RXM4AB2F7 (120V e, with LED)

Effect: Compact structure saves cabinet space; LED indicator facilitates quick status inspection

Caso 3: Packaging Machinery Production Line

Aplicativo: Signal isolation and amplification between PLC and actuators (cilindros, motores)

Modelo: RXM4AB1P7 (230V e, without LED)

Effect: Offline circuit testing available without shutdown, improve production efficiency

Seleção & Installation Guidelines
Seleção de modelo: Select by contact quantity (2/3/4 C/O), tensão da bobina (CA/CC), LED indicator and test button demand
Socket Matching: RXM4AB series must adopt 14-pin sockets such as RXMZE2S114M to ensure correct pin alignment
Correspondência de carga: Do not exceed rated voltage and current; install RC snubber circuit for inductive loads
Ambiente de instalação: Evite altas temperaturas, humid and dusty places, ensure good ventilation
Especificação de fiação: Wire strictly according to contact numbers to prevent short circuit

Notícias Notícias comerciais