Allen-Bradley 193-ESM-IG-30A-T E3 Plus Replacement Solution

Product Overview

Allen-Bradley 193-ESM-IG-30A-T E3 Plus Replacement Solution: Seamless Transition from Legacy Motor Protection Systems

The Allen-Bradley 193-ESM-IG-30A-T is an Ethernet/IP I/O Expansion Module designed for the E3 Plus Electronic Overload Relay series, widely deployed across industrial motor control centers (MCCs), DeviceNet-based control cabinets, and CompactLogix/ControlLogix automation architectures. As legacy motor protection systems age and original spare parts become increasingly difficult to source, facilities engineers and procurement teams are actively seeking verified replacement and upgrade pathways that minimize downtime, preserve existing wiring infrastructure, and maintain communication protocol compatibility.

This product page provides a complete migration reference for engineers transitioning from discontinued or end-of-life motor protection modules to the 193-ESM-IG-30A-T, or sourcing a direct replacement unit for an existing E3 Plus installation. Whether your facility is running a legacy 193-EC2 or 193-ECPM overload relay that no longer supports your expanded I/O requirements, or you are replacing a failed expansion module in a live production line, this guide covers wiring compatibility, communication protocol continuity, physical installation constraints, and procurement assurance.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from a legacy motor protection architecture to the 193-ESM-IG-30A-T typically involves coordinating several interdependent components within the same control cabinet or MCC section. In most retrofit projects, the host E3 Plus overload relay — such as the 193-EC2 or 193-ECPM — remains in service, and only the expansion module is replaced or upgraded. This approach preserves the existing motor branch circuit wiring, contactor interlocking, and overload trip setpoints, dramatically reducing commissioning time.

For facilities migrating from a DeviceNet backbone to an Ethernet/IP network, the 193-ESM-IG-30A-T works in conjunction with a 1756-ENBT or 1756-EN2T EtherNet/IP communication module installed in the ControlLogix chassis. Engineers replacing a 1769-SDN DeviceNet Scanner with an Ethernet/IP-native architecture will find that the 193-ESM-IG-30A-T eliminates the need for a separate network bridge, simplifying the control cabinet layout and reducing the number of active network nodes.

In applications where the MCC section also houses a PowerFlex 40 or PowerFlex 525 variable frequency drive, the Ethernet/IP protocol of the 193-ESM-IG-30A-T allows unified network management of both the drive and the motor protection module through a single EtherNet/IP switch port, reducing cabling complexity. Terminal modules such as the 1492-CABLE series wiring accessories are commonly used alongside this expansion module to maintain organized, labeled wiring within the cabinet.

For I/O-intensive retrofit projects, the 193-ESM-IG-30A-T is often deployed alongside 1734 POINT I/O modules mounted on the same DIN rail section, providing additional discrete and analog I/O capacity without requiring a separate I/O rack. In larger system architectures, a 1756-L73 ControlLogix controller or 1769-L33ER CompactLogix controller serves as the primary PLC, with the 193-ESM-IG-30A-T appearing as an EtherNet/IP device node in the I/O tree. Programming engineers typically use Studio 5000 Logix Designer to add the module’s EDS file, configure the connection parameters, and map the I/O data to the controller tags — a process that typically takes under 30 minutes for experienced integrators.

Where signal isolation is required between the motor protection circuit and the PLC analog input card, a signal isolator or loop-powered transmitter may be inserted in the 4–20 mA current loop. This is particularly relevant in older facilities where the existing cable runs were not shielded to modern EMC standards. In such cases, the 193-ESM-IG-30A-T’s Ethernet/IP interface provides inherent noise immunity advantages over legacy serial or DeviceNet connections.

Retrofit Guidance FAQ

Q: Can I reuse my existing terminal block wiring when replacing the expansion module?
A: Yes. The 193-ESM-IG-30A-T uses the same side-mount connector interface as other E3 Plus expansion modules. Existing field wiring connected to the host overload relay’s terminal blocks does not need to be disturbed. Only the expansion module itself is swapped.

Q: Do I need to update the PLC program when migrating from a DeviceNet-based expansion module?
A: A partial program update is required. The DeviceNet scanner configuration (e.g., 1769-SDN) must be replaced with an EtherNet/IP connection configuration. The I/O data structure of the 193-ESM-IG-30A-T is well-documented in the Allen-Bradley product manual, and the EDS file is available for import into Studio 5000. Tag remapping is straightforward for engineers familiar with Logix-based programming.

Q: Will the 193-ESM-IG-30A-T fit in the same physical space as my existing expansion module?
A: The E3 Plus expansion module family shares a common mechanical footprint and DIN rail mounting profile. The 193-ESM-IG-30A-T occupies the same cabinet space as predecessor expansion modules, requiring no panel modifications or additional mounting hardware.

Q: What communication protocol does this module use, and is it compatible with my existing network infrastructure?
A: The 193-ESM-IG-30A-T communicates exclusively via EtherNet/IP. It requires a standard 100 Mbps Ethernet port on your managed or unmanaged industrial switch. If your existing network runs DeviceNet, a protocol migration to Ethernet/IP is required, which typically involves replacing the DeviceNet scanner card in the PLC chassis with an EtherNet/IP adapter module.

Q: How do I verify the module is functioning correctly after installation?
A: After installing the module and configuring the EtherNet/IP connection in Studio 5000, verify the module status LED (MS) shows solid green and the network status LED (NS) shows solid green. Use the controller’s I/O tree to confirm the module is in the “Running” state. Perform a test trip of the overload relay to confirm the expansion module’s I/O data updates correctly in the PLC tag database.

Warranty Assurance

Every 193-ESM-IG-30A-T unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes functional verification including communication interface testing, I/O channel continuity checks, and visual inspection for physical damage. Units that fail pre-shipment testing are quarantined and not dispatched.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our after-sales response team is reachable via email at [email protected] or by phone at +86 18359293191. Replacement units are typically dispatched within 3–5 business days of claim verification. We maintain buffer stock of high-demand Allen-Bradley E3 Plus series components to support rapid replacement fulfillment for production-critical applications.

For procurement teams requiring documentation, we can provide a packing list, commercial invoice, and test report upon request. Shipments originate from Xiamen, China, with DHL Express, FedEx International Priority, and sea freight options available depending on order volume and urgency.