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Allen Bradley 1746-IO8

Zhangzhou Rayon Automation Technology Co., Ltd. Purchase the available dual-function Allen Bradley 1746-IO8 module, which includes both digital input and digital output. It is specially designed to save PLC rack slots. As a professional supplier, we offer a wide range of models.

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Product Description

In China, Zhangzhou Rayon Automation Technology Co., Ltd. It is a supplier and an exporter. The Allen Bradley 1746-IO8 provided is a dry contact, and it does not supply power to the load. You need to separately connect an external power line (the L line) to the common terminal of the output end to form a circuit. With the minimum rack occupation, it can meet the basic switch quantity control requirements.

Parameters

Parameter	Specification
Model number	Allen Bradley 1746-IO8
Channel count	4 input channels + 4 output channels (Hybrid I/O module)
Backplane current consumption (5V)	50 mA - Drawn from the PLC rack backplane
External power supply (24V)	0 mA - No need for external 24V power supply
Heat dissipation power	2.5 W
Terminal type	Removable screw terminal block - Facilitates maintenance, allowing the module to be removed without disconnecting wires
Wire diameter	14 - 22 AWG
Isolation voltage	1500V AC (lasting 1 second) - Between the system backplane and the field terminal block
Input parameters: Input signal type	120V AC
Input parameters: Operating voltage range	85 - 132V AC - Frequency: 47 - 63 Hz
Input parameters: Guaranteed on-off voltage	≥ 79V AC
Input parameters: Guaranteed off voltage	≤ 20V AC
Input parameters: Input current (on)	14 mA (typical value @ 120V)
Input parameters: Input leakage current (off)	2 mA (typical value)

Characteristics

Allen Bradley 1746-IO8 simplifies system wiring. It has 4 input and 4 output functions, supports industrial standard 120V AC signals, and the output terminals use mechanical dry contacts. It can control 120V/240V AC loads and also drive low-voltage DC loads such as 24V DC. It operates with 5V DC power supply from the SLC 500 rack backplane, without the need for an external 24V DC penetrating power supply. Additionally, with the detachable plug-in terminal block design, there is no need to dismantle the on-site hard wiring, reducing maintenance downtime.

Real Case

Allen Bradley 1746-IO8 is responsible for receiving signals from photoelectric switches and limit switches in simple material sorting or conveyor belt nodes, and outputs precise control to pneumatic solenoid valves or warning buzzers through relays. In the renovation and upgrade of old equipment with limited space, if the control box cannot accommodate two independent modules, it can replace the original while saving space and directly reuse the original 120V AC on-site wiring.