AB 1769-L24ER-QB1B CompactLogix 5370 L2 Controllers

AB 1769-L24ER-QB1B CompactLogix 5370 L2 Controllers

Precautions before installation

Electrostatic protection: The equipment is sensitive to electrostatic discharge, so it is necessary to touch grounded objects, wear a grounded wrist strap, and avoid touching the connectors and pins of the component boards during operation.

System Composition and Power Supply: The control system consists of a controller, embedded power supply, and I/O points. The embedded power supply is a 24V DC input and requires connection to an external Class 2 or SELV-approved power supply that is in the same enclosure as the controller.

Installation Procedure

SD Card Installation: Verify that the SD card is locked, unlocked for read/write and locked for read only, prior to installation. Insert the SD card in the correct orientation, ensure it is in place and close the SD card door.

System Mounting

DIN rail mounting: Can be mounted on EN 50 022 - 35 x 7.5 mm or EN 50 022 - 35 x 15 mm DIN rails, use zinc plated yellow chromate steel DIN rails to ensure a good earth connection, hook and then press down to lock.

Panel Mounting: Mount with two M4 or #8 pan head screws, drill holes using the assembly module as a template, taking care to align the holes, and ground the panel through the ground plate after mounting.

Power Connection: When connecting the external power supply, make sure the power supply is installed and set up correctly, strip the wires according to the specification and then connect the +24VDC and COM terminals, pay attention to the FG terminal for connecting to the field devices, and the power control device should be installed at the +24VDC terminal.

Embedded I/O Module Wiring: Embedded I/O modules of different controller models have different configurations, for example, 1769-L24ER-QB1B has 16 24V DC digital inputs and 16 24V DC digital outputs. When wiring, make sure the system is powered off first, strip the wires and insert them as required, and use a screwdriver to press the spring release clips when unplugging the wires.

Key Issues

What do I need to be aware of when installing the CompactLogix 5370 L2 controller in a hazardous area?

It must be installed in a suitable enclosure, using electrical code-compliant wiring methods, with specified communication cables, and in an area that is free of hazards during installation and operation to avoid arcing that could cause an explosion.

What are the differences in I/O module configurations between the different CompactLogix 5370 L2 controller models?

The 1769-L24ER-QB1B has 16 24V DC digital inputs and 16 24V DC digital outputs; the 1769-L24ER-QBFC1B has 4 24V DC digital inputs, 4 24V DC digital outputs, 4 high-speed counters, and 2 high-speed counter outputs; and analogue input and output configurations vary from model to model. The configuration of analogue inputs and outputs varies from model to model, depending on the model.

What should I do if I have static electricity problems when installing the CompactLogix 5370 L2 controller?

Follow static protection guidelines, discharge static electricity by touching a grounded object, wear a grounded wrist strap, avoid touching connectors, pins, and circuit assemblies on the component board, use a static-safe workstation, and store the device in antistatic packaging.