ABB UAC318AE HIEE300744R0001 Digital I/O Controller Module

Product Description

The ABB UAC318AE HIEE300744R0001, also cataloged as the UAC318AE Digital I/O Controller Module, operates as a dedicated hardware component for discrete signal acquisition and output execution within ABB distributed control and drive system backplanes.

Hardware Specifications

Backplane Bus Communication and I/O Density Scaling

The module interfaces with the host controller through a deterministic backplane bus or external fieldbus network. Furthermore, I/O density scales by populating adjacent rack slots with identical or heterogeneous modules, thereby allowing the system to expand discrete channel counts without replacing the central processor. Consequently, firmware revision on the UAC318AE must match the host controller's compatibility matrix to prevent communication timeouts or I/O mapping errors. Additionally, when deploying multiple modules in a single rack, the total backplane current draw accumulates and must be verified against the rack power supply's rated output.

Frequently Asked Questions

Q: Does the UAC318AE support hot-swap insertion while the host system is powered?

A: Hot-swap capability depends on the specific host rack and backplane design. In AC 800M and certain Advant/Master configurations, the module can be inserted or removed under power only if the rack supplies individual channel power isolation and the firmware supports live insertion. Always verify the host system manual before attempting hot-swap procedures.

Q: What is the maximum backplane current consumption of this module?

A: The module draws its operating power from the 24 VDC supply rail. However, the input and output channel loads are externally sourced. Total current depends on the number of active output channels and their connected loads. For a 16-channel relay variant with all outputs active at 3 A each, the external supply must deliver at least 48 A plus the module's internal logic consumption, which is typically under 200 mA at 24 VDC.

Q: Can the communication protocol be switched between Modbus RTU and PROFINET via firmware?

A: No. The communication interface is hardware-determined by the module variant. A Modbus RTU variant cannot be converted to PROFINET through firmware flashing. Therefore, confirm the exact variant code against the nameplate before procurement.

Field Installation Guidelines

Mount the module on a standard DIN rail or secure it to the designated rack/backplane slot inside a control cabinet. Next, tighten all terminal screws to the torque specified in the ABB installation manual to prevent loose connections and intermittent signal loss. Furthermore, route signal cables separately from high-voltage power wiring to minimize electromagnetic interference. Additionally, connect the shield of each signal cable to the cabinet ground at one end only, using a dedicated ground busbar. Finally, verify that the operating voltage at the module terminals falls within the 20.4-27.6 VDC range before applying power. For AC variants, confirm the input voltage matches the nameplate rating prior to energization.

Other Attributes

• Series: Advant DCS/800xA
• Country of Origin:  Germany/Sweden/Finland
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of ABB

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