1. Introdução
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Allen-Bradley 1746-P2 SLC 500 Power Supply. The 1746-P2 is designed to provide reliable power to the SLC 500 programmable controller system, ensuring stable performance for industrial automation applications.
Please read this manual thoroughly before attempting to install or operate the unit. Retain this document for future reference.
2. Informações de segurança
AVISO: Electrical shock hazard. Always disconnect power before installing, removing, or wiring modules in the racks. Never operate any module selector switch while the circuit is energized. Failure to follow these instructions may result in serious injury or death.
Observe all local and national electrical codes. Installation and maintenance should only be performed by qualified personnel.
Figura 2.1: parte superior view of the 1746-P2 Power Supply, showing the Allen-Bradley branding and a critical safety warning label regarding live circuits.
- Assegure-se de que o sistema esteja devidamente aterrado.
- Use only specified fuse types and ratings for replacement.
- Use copper wire rated for 75°C or higher for all connections.
3. Produto acabadoview
The Allen-Bradley 1746-P2 is a power supply module designed for use with the SLC 500 chassis. It converts incoming AC line voltage into the necessary DC voltages required to power the SLC 500 processor and I/O modules within the rack. This module is part of Series C, indicating its revision level.
Figure 3.1: The Allen-Bradley 1746-P2 Power Supply shown connected to an SLC 500 chassis, illustrating its typical installation configuration.
Figura 3.2: Um close-up view of the product label on the 1746-P2 Power Supply, displaying model number, serial number, and electrical specifications.
4. Instalação
The 1746-P2 power supply is designed for direct mounting into any slot of an SLC 500 chassis. Ensure the chassis is securely mounted in its intended location before installing the power supply.
4.1 Procedimento de montagem
- Ensure all power to the SLC 500 chassis is disconnected and locked out.
- Align the 1746-P2 module with an available slot in the SLC 500 chassis.
- Slide the module firmly into the slot until it is fully seated and the locking mechanism engages.
- Verify that the module is securely fastened to the chassis.
Figura 4.1: parte inferior view of the 1746-P2 Power Supply and an SLC 500 rack, showing the interconnect cable (1746-C7) which links the power supply to the backplane.
Figura 4.2: Uma análise detalhada view of the 1746-C7 Rack Interconnect cable, essential for connecting the power supply to the SLC 500 backplane.
5. Fiação
Proper wiring is critical for the safe and reliable operation of the 1746-P2 power supply. Refer to the product label for specific terminal designations and voltage requisitos.
5.1 Conexão de alimentação de entrada
- The 1746-P2 accepts two ranges of AC input voltage: 85-132 VAC or 170-265 VAC.
- The operating frequency is 50/60 Hz.
- Connect the incoming AC power lines to the designated input terminals on the power supply. Ensure correct phase and neutral connections as per local electrical codes.
- Always use 75°C rated copper wire for all power connections.
5.2 Potência de saída
The power supply provides the following DC outputs to the SLC 500 backplane:
- 5 VDC a 5 Amperes
- 24 VDC a 0.96 Amperes
- User 24 VDC at 0.2 Amperes
Figura 5.1: Detalhado view of the power supply label, highlighting the input line voltage requirements and the various DC output specifications.
6. Operação
Once the 1746-P2 power supply is correctly installed and wired, apply the specified AC input voltage. The power supply will automatically convert and distribute the necessary DC voltages to the SLC 500 backplane, powering the processor and I/O modules. There are no user-adjustable controls on the power supply module itself for normal operation.
Refer to the SLC 500 processor and I/O module manuals for specific operational details of the overall system.
7. Manutenção
Routine maintenance helps ensure the longevity and reliability of the 1746-P2 power supply.
7.1 Inspeção
- Periodically inspect the power supply and its connections for any signs of damage, loose wiring, or excessive dust accumulation.
- Certifique-se de que as aberturas de ventilação estejam desobstruídas para evitar o superaquecimento.
Figura 7.1: Um close-up view of the ventilation grille on the 1746-P2 Power Supply, emphasizing the importance of keeping these areas clear for proper cooling.
7.2 Limpeza
If cleaning is necessary, disconnect all power to the unit. Use a soft, dry cloth or a low-pressure air duster to remove dust and debris. Do not use liquid cleaners or solvents.
7.3 Substituição de fusíveis
If a fuse requires replacement, ensure power is disconnected. The specified fuse replacement is a 250V 3A FUSE (SANO SOC SD4 or BUSSMANN AGC 3). Always replace with a fuse of the identical type and rating.
8. Solução De Problemas
This section provides basic troubleshooting steps for common issues. For complex problems, contact qualified technical support.
8.1 No Power to SLC 500 System
- Check Input Power: Verify that the correct AC line voltage (85-132 VAC or 170-265 VAC, 50/60 Hz) is supplied to the power supply terminals.
- Verifique os fusíveis: Inspect the internal fuses of the power supply. If a fuse is blown, replace it with the specified type (250V 3A FUSE, SANO SOC SD4 or BUSSMANN AGC 3).
- Assentos modulares: Ensure the 1746-P2 module is fully seated in the SLC 500 chassis slot.
- Cabo de interconexão: Verify the 1746-C7 interconnect cable is properly connected between the power supply and the backplane.
8.2 System Instability or Errors
- Volumetage Saída: While not user-adjustable, ensure the power supply is providing stable output voltages (5VDC, 24VDC). This may require specialized test equipment.
- Sobrecarga: Check if the total current draw from the SLC 500 modules exceeds the power supply's capacity.
- Fatores ambientais: Ensure the operating temperature is within the specified range and there is adequate ventilation.
9. Especificações
| Parâmetro | Especificação |
|---|---|
| Número do modelo | 1746-P2 |
| Série | C |
| Vol de entradatage Alcance | 85-132 VCA ou 170-265 VCA |
| Frequência de entrada | 50/60 Hz |
| Output 1 (5 VDC) | 5 Amperes |
| Output 2 (24 VDC) | 0.96 Amperes |
| Output 3 (User 24 VDC) | 0.2 Amperes |
| Substituição de fusíveis | 250V 3A FUSE (SANO SOC SD4 or BUSSMANN AGC 3) |
| Tipo de fio recomendado | 75°C Copper Wire |
| Dimensões do produto (C x L x A) | 6 x 6 x 3.5 polegadas |
| Peso | 1.35 libras |
| Operating Temperature Code | T3C |
| Hazardous Location Rating | Class 1, Groups A, B, C and D, Div 2 |
10. Garantia e Suporte
Warranty information for the Allen-Bradley 1746-P2 Power Supply is typically provided at the point of purchase or through official Allen-Bradley (Rockwell Automation) channels. Please refer to your purchase documentation or contact your supplier for specific warranty terms and conditions.
For technical support, service, or additional product information, please contact Allen-Bradley (Rockwell Automation) directly or an authorized distributor. Their official website often provides comprehensive resources, including updated manuals, software, and contact information for support services.
