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Allen Bradley SLC 150 1745-E157

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1745-E157

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The 1745-E157 is an I/O expansion unit from Allen Bradley’s SLC 150 series. It accommodates an input voltage range between 18 and 30 volts DC, providing support for 20 input counts and 12 output counts, facilitating efficient control in various applications.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1745-E157

ManufacturerAllen Bradley
Product TypeI/O Expansion Unit
Product LineSLC 150
Part Number1745-E157
Weight2.81 lbs (1.28 kg)
Input Voltage18–30V DC
Number of Input Counts20 inputs
Number of Output Counts12 outputs
On-State Voltage10 VDC
Off-State Voltage4 VDC
Input Current8 mA at 24 VDC
Transistor Output Current0.5 A per point
Relay Contact Rating1.5 A at 120 VAC
Minimum Operating Temperature0 °C
Maximum Operating Temperature60 °C
Installation Altitude1000 m
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The Allen Bradley 1745-E157 serves as an I/O expansion unit specifically designed for the SLC 150 series. This unit operates effectively within an input voltage scope of 18 to 30 volts DC, allowing for a range of power supply configurations. With the ability to manage 20 input signals, this device facilitates extensive monitoring and control functionalities. Additionally, it includes 12 output signals, making it adept for numerous applications in automation systems.

When engaged, the on-state voltage is specified at 10 VDC, while the off-state voltage measures 4 VDC. Input current consumption is rated at 8 mA with a 24 VDC supply, ensuring efficient operation. The transistor outputs can handle a current of up to 0.5 A for each point, facilitating reliable signal transmission. For relay outputs, the contact rating reaches 1.5 A at 120 VAC, suitable for various load types.

The operational temperature range for the 1745-E157 is defined from a minimum of 0 °C to a maximum of 60 °C, which supports a wide array of environmental conditions. Furthermore, this module is certified for installation at altitudes of up to 1000 meters, thus enhancing its versatility in industrial settings. Overall, the 1745-E157 I/O expansion unit delivers reliable performance for applications that require robust input and output management.

Revision Part #Also known as
1745-E157 Ser A1745-E157/A, Series A, Rev A
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