849A-ZOA24 ALLEN-BRADLEY Pneumatic Timing Relay

Review ALLEN-BRADLEY Ser. Pneumatic Timing Relay

The Allen-Bradley 849A-ZOA24 pneumatic timing relay is a versatile and reliable component in industrial automation systems, designed to convert pneumatic signals into precise electrical actions. This timing relay, specifically a model from Rockwell Automation's Allen-Bradley line, combines the proven heritage of Allen-Bradley control components with advanced pneumatic technology.

The 849A-ZOA24 boasts an impressive operating range, capable of handling inputs as low as 3 psi (0.2 bar) and outputs up to 120 psi (8.3 bar). Its no-shadow contact design ensures optimal performance even when the coil is activated, minimizing potential contact bouncing. It can be used to control motors, solenoids, and other electrical devices with precision and accuracy.

Each timing relay includes two normally open (NO) contacts and one form-C changeover contact. The contacts can be used in either NO or normally closed (NC) configurations to suit various applications. An adjustable time delay feature is built into the relay, offering a time delay range of 5 ms to 255 seconds. This adaptability makes the 849A-ZOA24 an ideal component for use in sequencing, timing, or interlocking applications.

The 849A-ZOA24 is designed for improved maintenance and durability, with a captive screw design for the cover and mounting screws, minimizing the risk of lost screws or improper mounting. It is also sealed to IP67, ensuring the internal components remain protected against dust, water, and other contaminants, contributing to its long life.

This pneumatic timing relay operates at a wide temperature range, suitable for use in diverse environments, from -40 C to 70 C (-40 F to 158 F). Furthermore, the use of manufactured pressure limiting exhaust ports in the timing relay ensures that the exhaust pressure remains below 35 psi (2.5 bar) to maintain safety in your overall system. The wiring for this component is field selectable on the PCB to provide both single-phased and three-phased outputs, allowing for added flexibility.

In summary, the Allen-Bradley 849A-ZOA24 pneumatic timing relay is a robust and reliable solution for your precise timing and sequencing needs. Its extensive features, including adjustable time delay, wide temperature range, and various wiring options, make it adaptable to various automation systems and industrial applications.

Pros and Cons of Buying an Allen-Bradley 849A-ZOA24 Pneumatic Timing Relay

The Allen-Bradley 849A-ZOA24 Pneumatic Timing Relay is a reliable and versatile device used in various industries for automation and control applications. Here are some pros and cons of investing in this product.

1. Durable design: The Allen-Bradley 849A-ZOA24 is built with a robust and durable design, making it suitable for harsh industrial environments. Its pneumatic operation ensures reliable performance even in the presence of electromagnetic interference (EMI) and radio frequency interference (RFI).

2. Versatile application: The timing relay can be used for various applications such as time delay control, interlocking, and sequencing in industrial automation systems. It offers multiple output options, including normally open and normally closed contacts, which allows for flexibility in system design.

3. Easy installation and maintenance: The relay is easy to install, and its field-adjustable features allow for simple configuration without requiring extensive electrical knowledge. It also has cable connections for ease of wiring and a tamper-proof design which reduces maintenance requirements.

1. Limited timing functions: The Allen-Bradley 849A-ZOA24 is limited to providing simple on/off timing functions, which may not be suitable for more complex control applications. It may not be able to handle advanced functions such as proportional control or variable timing.

2. Limited operating temperature range: The relay is designed for operation within a temperature range of -20 C to 50 C. Operating outside this temperature range could potentially damage the device.

The Allen-Bradley 849A-ZOA24 Pneumatic Timing Relay is an excellent choice for simple automation applications requiring reliable, pneumatically operated, and rugged devices. Its ease of installation, versatile output options, and durable design make it a preferred alternative to electromechanical or solid-state relays for applications where electromagnetic interference is a concern. However, for applications requiring more advanced timing functions or a broader operating temperature range, other types of relays may be more suitable.

Based on the pros and cons discussed, this relay could be recommended for industries such as mining, oil & gas, and manufacturing that require reliable machinery operation and want to minimize electromagnetic interference. It is best for simple timing applications involving short duration time delays and thermal protection. However, for more complex control applications, or applications where variable timing functions are required, alternative timing relays, or controllers might be preferable options.

Details:

specifications genpurrelays:

• brand: Allen-bradley
• mpn: 849a-zoa24
• part type: Pneumatic Timing
• country/region of manufacture: United States

seller genpurrelays:

• city: waukesha, wisconsin
• # reviews: 3504
• rating: 99.5%

returns genpurrelays:

• policy: no returns

shipping genpurrelays:

• type: calculated
• class: standard
• carrier: usps
• service: usps ground advantage
• transit: 6-12 days

payments genpurrelays:

• credit card: diners-club
• wallet: paypal
• other

offer genpurrelays:

• options: ship-to-home
• in stock #: 5
• availability: in stock
• sold #: 26
• started: december 27, 2024
• prices: $240.38–$935.00
• item condition:
  • New
  • Used
  • Seller refurbished

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays