Product Overview
The CON021 is a universal signal conditioner from EPRO that converts low-level field signals—thermocouple, RTD, millivolt, voltage, and 4–20 mA—into isolated, linear analog outputs suited for PLCs and distributed control systems. Engineers include CON021 in control cabinets and I/O racks where precise isolation and compact form factor reduce ground-loop issues and lower cabinet real estate. Typically, maintenance teams assemble mixed-vendor spare kits that contain ABB DO810 boards, ABB I/O modules, ABB AC 800M controllers, and industrial automation spare parts; the CON021 often serves as the flexible front-end for multiple sensor types in those kits.
In installations, technicians mount the CON021 near termination blocks or junction boxes to shorten sensor extension leads and improve accuracy. For instance, in a boiler-house retrofit a tech installed CON021 adjacent to the boiler junction and restored stable temperature control within hours. e.g., in a municipal water pump station, technicians replaced legacy relays with CON021 to recover 24/7 monitoring within a day. Xiamen Xiongba E-commerce Co., Ltd. Branch specializes in industrial automation distribution and global procurement and supports pre-shipment testing and serial-number traceability for units supplied.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | CON021 |
| Manufacturer | EPRO |
| Product Type | Universal Signal Conditioner / I/O Interface Module |
| Power | 24 VDC nominal (18–30 VDC acceptable) |
| Communication / Protocol | Analog conditioned outputs (0–10 V, 0–5 V, ±V, or 4–20 mA) |
| Operating Temperature | -20 °C to +60 °C |
| Mounting | DIN rail or panel bracket (compact module) |
| Protection / Ingress | IP20 (module level); enclosure-dependent |
| Dimensions (HxWxD) | ~110 × 35 × 90 mm (module with bracket) |
| Weight | ~0.18 kg |
| Typical Interfaces | Thermocouple, RTD, mV, ±V, 4–20 mA inputs; isolated analog outputs |
| Compliance | CE, RoHS (verify part-specific approvals with datasheet) |
(Values are representative; confirm exact ratings and pinouts with the official datasheet before wiring or procurement.)
Key Features and Benefits
The CON021 is built for signal fidelity and operational flexibility. First, it supports multiple input types—thermocouple, RTD, mV, voltage and current—so one module can replace several dedicated transmitters, reducing spares complexity and cabinet clutter. Second, galvanic isolation between input and output prevents ground loops and common-mode noise that corrupt low-level signals; this yields cleaner trending and fewer nuisance alarms. Third, adjustable span and zero let technicians scale outputs precisely to host DCS tags, which simplifies commissioning.
Beyond signal conditioning, CON021 is designed for field serviceability: accessible trim points, status LEDs, and standard mechanical mounting cut mean time to repair. Additionally, the module’s conservative thermal and component ratings increase operational longevity, lowering lifecycle cost. Integration is straightforward with common DCS or PLC architectures—mapping CON021 outputs to ABB I/O modules or an ABB AC 800M requires only standard analog channel mapping rather than protocol conversion. For maintenance planners, the consolidation of multiple sensor types into a single module reduces SKU count in industrial automation spare parts inventories and shortens procurement cycles.
Application Scenarios
Power generation: install CON021 in turbine auxiliary cabinets to linearize thermocouples and feed isolated analog channels to the DCS for cascade control and accurate historian trending. This placement minimizes lead length and improves closed-loop stability.
Oil & gas and petrochemical: use CON021 on process skids to collect multiple thermocouple types, condition the signals, and provide isolated outputs to safety PLCs and the operator station—reducing nuisance trips caused by noisy extension wiring.
Water & wastewater: during brownfield retrofits, technicians keep CON021 on hand to reuse existing field sensors while producing clean DCS inputs, avoiding costly sensor swaps and shortening outage windows.
Mining and metals: in heat-treatment lines, CON021 conditions furnace thermocouples for stable control, reducing scrap and improving repeatability.
Discrete manufacturing and HVAC: consolidate rooftop and production-line thermocouple islands into rack-mounted conditioners like CON021 to simplify alarm aggregation and spare-parts logistics.
Across these industries, CON021 addresses real problems—noisy signals, multiple sensor types, and long extension runs—by centralizing conditioning and isolation. Teams that pair CON021 with ABB DO810 or ABB I/O modules gain a predictable, low-effort path to integrate heterogeneous sensors into their DCS without time-consuming protocol gateways.
Related Models
CON020 — previous generation universal conditioner (legacy footprint).
CON030 — Ethernet-enabled gateway variant for networked aggregation.
CON021-HT — higher-temperature spec variant for hot environments.
CON-DUP — redundant power-capable twin module for critical loops.
IO-TERM-16 — companion termination plate for multi-channel wiring.
CON-MODEXP — expansion module adding relay alarm outputs.
CON-RACKBASE — rack/backplane for mixed module installations.
Installation and Maintenance
Before installation, confirm cabinet space, mounting method (DIN rail or panel bracket), and a regulated 24 VDC supply. Mount CON021 as close as practical to sensor junctions to reduce extension-wire length and thermoelectric offsets. Grounding is essential: bond cabinet earth at a single point, tie thermocouple shields at the panel, and separate signal and power conduits to minimize EMI. Also, leave access room for trim adjustments and LED observation during initial commissioning.
For maintenance, perform visual LED checks and torque terminal screws during scheduled outages; document baseline I/O values immediately after commissioning so trend analysis detects drift early. Back up any host-side scaling or mapping before replacing a module. If intermittent noise remains after wiring verification, swap CON021 from spares and bench-test the suspect unit to isolate root cause. Use historian trends and event logs to set replacement intervals based on empirical failure patterns, and keep at least one spare CON021 for critical loops to avoid extended downtime.
Product Warranty
The CON021 is covered by a one-year warranty and free replacement service provided by Xiamen Xiongba E-commerce Co., Ltd. Branch (not the OEM). For warranty claims concerning CON021, customers should contact Xiamen Xiongba with the purchase order and module serial number; Xiamen Xiongba offers pre-shipment testing, datasheet verification, and serial-number traceability to confirm correct configuration before dispatch. Xiamen Xiongba will coordinate replacement logistics, advise on suitable drop-in or refurbished alternatives when originals are obsolete, and provide technical assistance to minimize plant downtime during claims.
