Horner HE-XE105 Retrofit-Compatible DC Input Module

Horner HE-XE105 Retrofit-Compatible Digital DC Input Module for Legacy Automation Systems

The Horner HE-XE105 is a digital DC input module designed for the Horner XE Series programmable logic controller platform. As legacy automation systems age and original spare parts become increasingly difficult to source, the HE-XE105 serves as a critical retrofit-compatible replacement for facilities operating older Horner-based control architectures. Whether you are managing a planned upgrade, responding to an unexpected module failure, or executing a phased migration away from discontinued hardware, the HE-XE105 provides a reliable, drop-in-compatible solution that minimises engineering rework and reduces total downtime exposure.

NINERMAS maintains verified stock of the HE-XE105 with a 12-month warranty on every unit shipped, supporting procurement teams that require long-term spare parts commitments for critical production lines.

Upgrade Compatibility Table

Retrofit Planning for Existing Automation Systems

Integrating the HE-XE105 into an existing control cabinet requires a structured pre-installation review. Engineers should begin by auditing the current XE Series rack configuration, confirming available slot positions and verifying that the backplane power budget can accommodate the additional module load. The HE-XE105 draws its logic power from the XE rack backplane, so the installed Horner HE-XPS100 or equivalent XE Series power supply module must be assessed for remaining capacity before the new input module is seated.

Terminal wiring is a common source of commissioning delays during retrofit projects. Field wiring connected to the legacy input module must be documented — including wire gauge, signal polarity, and shield grounding — before the old module is removed. The HE-XE105 uses a standard removable terminal block, which simplifies re-termination, but technicians should confirm that existing cable lengths reach the new module position if the slot assignment changes during the rack reorganisation.

Module address configuration is handled within the Cscape programming environment. When replacing a failed or discontinued input module, the replacement HE-XE105 must be assigned the same I/O address as the original to avoid requiring a full program re-download. If the original address mapping is unknown or the program has been lost, a full I/O audit using Cscape’s online monitoring mode is recommended before the switchover.

For facilities also upgrading their communication infrastructure, the HE-XE105 integrates cleanly into XE racks that include Horner HE-XEC100 or HE-XEC200 Ethernet communication modules. Sites running CsCAN networks alongside the XE platform should verify that the HE-XCPN100 CsCAN network adapter is correctly configured and that node addressing does not conflict with the newly installed input module’s rack position.

Where the retrofit scope extends beyond a single module replacement to a broader I/O expansion, engineers may also need to evaluate the Horner HE-XE205 digital output module and HE-XE305 analogue input module to complete the I/O complement within the same rack. Signal isolators — such as DIN-rail-mounted loop-powered isolators — should be considered for any field signals that originate from equipment operating at different ground potentials, particularly in older facilities where earthing practices may not meet current standards.

HMI integration is another area requiring attention during XE Series retrofits. If the control system includes a Horner OCS (Operator Control Station) — such as the HE-XW1E0 or a comparable XL Series panel — the HMI screen logic referencing the replaced input module’s register addresses must be reviewed and updated in Cscape before the system is returned to production. Failure to update HMI register mappings is a frequent cause of post-retrofit alarm nuisance and operator confusion.

Programming cable access is required for any offline program verification. The Horner HE-PC1 USB programming cable or equivalent MJ1 serial programming cable should be on-site during the retrofit to allow direct connection to the XE controller’s programming port, enabling live diagnostics and forced I/O testing before the system is handed back to operations.

Downtime Control During System Migration

Minimising production downtime during an HE-XE105 module replacement requires careful pre-staging and a clearly defined switchover sequence. The recommended approach is to complete all wiring preparation, program verification, and module address confirmation during a scheduled maintenance window — ideally with the machine in a safe, de-energised state.

Where a hot-swap is not possible and the process cannot tolerate an extended outage, a parallel wiring strategy can be employed: the replacement HE-XE105 is pre-wired on a temporary DIN rail adjacent to the existing rack, the program is verified in simulation mode using Cscape’s offline emulation, and the physical switchover is executed as a single, rapid module exchange with pre-terminated connectors ready to plug in.

Original program logic should be backed up to a PC using Cscape before any hardware changes are made. This backup protects against accidental program loss during the module swap and provides a reference for verifying that all I/O points are correctly mapped after the replacement module is installed. Retaining the original program also allows a rapid rollback if unexpected compatibility issues arise during commissioning.

Field technicians should confirm that all safety interlocks — including any Horner HE-XSAFE or third-party safety relay modules installed in the same cabinet — remain correctly wired and functional after the retrofit. Safety circuit continuity testing should be completed before the machine is returned to automatic operation.

NINERMAS pre-tests every HE-XE105 unit prior to shipment, providing a factory test report on request. This pre-shipment verification reduces the risk of receiving a non-functional module and supports the goal of completing the retrofit within a single planned maintenance window.

Retrofit Support FAQ

Q1: Is the HE-XE105 a direct drop-in replacement for the original Horner XE Series digital DC input module?
A: Yes. The HE-XE105 is designed to seat directly into an XE Series rack slot and uses the same backplane connector and terminal block format as the original module. No mechanical modification to the rack or cabinet is required. Module address assignment must be confirmed in Cscape to match the original configuration.

Q2: What commissioning steps are required after installing the HE-XE105?
A: After physical installation, connect the programming cable to the XE controller and open the project in Cscape. Verify that the I/O configuration reflects the HE-XE105 at the correct rack slot and address. Use Cscape’s online monitoring to force individual inputs and confirm field wiring continuity before returning the system to automatic mode.

Q3: Can the HE-XE105 be used in a rack that also contains analogue and communication modules?
A: Yes. The XE Series rack supports mixed module configurations. The HE-XE105 can coexist in the same rack with analogue input/output modules, Ethernet communication modules, and CsCAN network adapters, provided the total backplane power budget is not exceeded. Consult the XE Series hardware installation guide for slot power allocation details.

Q4: What warranty and stock availability does NINERMAS offer for the HE-XE105?
A: NINERMAS maintains in-stock inventory of the HE-XE105 and offers a 12-month warranty on every unit. Each module is pre-tested before shipment. Long-term spare parts supply agreements are available for customers requiring guaranteed stock commitments for critical production lines. Contact our team for volume pricing and lead-time confirmation.

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