Description

K-Tron KCM-2 | OEM SmartConnex II Weigh Feeder Process Control Module

Product Core Brief

Model: KCM-2
Brand: K-Tron (Coperion K-Tron)
Series: SmartConnex II Feeder Control System
Core Function: Dedicated controller for loss-in-weight & volumetric feeders, real-time gravimetric flow regulation
Type: Feeder Control Module (KCM)
Key Specs: Works with SFT-II / SFT-III load cells | Integrated motor drive interfaces | Multiple industrial communication protocols
Condition Note: Legacy mature controller; OEM original production continues, stocked surplus units fully tested before delivery

Key Technical Specifications

Parameter	Specification
Full Part Number	KCM-2
System Platform	SmartConnex II
Supported Equipment	Loss-in-weight feeders, vibratory feeders, screw feeders
Compatible Load Cell	K-Tron SFT-II, SFT-III series weighing sensors
Drive Support	DC motor, stepper motor, vibratory drive, external VFD interface
Communication Protocols	Modbus RTU, Modbus TCP, Profibus DP, Ethernet/IP, DeviceNet, DF1
Power Input	103–264 VAC, 47–63 Hz
Operating Temperature	0 °C ~ +50 °C
Enclosure Rating	IP65 / NEMA 4
User Interface Options	Local LCD keypad (KCM-KD) / LED status display (KCM-SD)
Control Algorithm	Proprietary feed predictive algorithm for low-speed short-term accuracy
Local I/O	Digital input/output, analog 4–20mA input/output for interlock signals
Configuration Tool	SmartConfig PC software for parameter download & calibration

K-Tron KCM-2

Product Introduction

K-Tron KCM-2 is the core controller of the SmartConnex II control platform, designed exclusively for gravimetric loss-in-weight feeders. It collects weight signals from load cells, calculates actual material feed rate, and adjusts feeder motor speed dynamically to maintain stable target throughput.

This unit integrates weighing signal processing, closed-loop flow control and drive output in one enclosure. It supports automatic feeder calibration, material refill control, comprehensive alarm diagnostics and seamless data exchange with upper-level DCS/PLC. Optional stainless steel housing meets washdown requirements for food, pharmaceutical and hygienic production environments.

Application Scenarios & Pain Points

Unstable feeding accuracy often originates from aging feeder controllers. Drifting weight sampling and outdated control logic create inconsistent material ratios, leading to defective batches. Continuous extrusion, compounding and chemical reaction processes cannot tolerate long downtime during controller replacement.

Typical Application Scenarios:

Plastics Compounding & Extrusion – Continuous gravimetric feeding of polymer pellets, additives and powders
Chemical Process Plants – Precise continuous dosing of raw materials for reaction systems
Food & Pet Food Manufacturing – Accurate formulation mixing with hygienic feeder packages
Pharmaceutical Production – Controlled feeding of active ingredients for tablet and coating processes

Case Reference

A plastic compounding plant in Fujian suffered periodic flow fluctuation on twin-screw extruders. Troubleshooting traced the root cause to an aging KCM-2 with unstable load cell signal acquisition. The facility had no spare controller on hand. After installing our pre-tested KCM-2 spare, feed rate deviation returned within process tolerance. The procurement team added two spare controllers to their MRO inventory to avoid unexpected production stops.

Compatibility & Replacement Matrix

KCM-2 → KCM-2 : Direct replacement; Re-upload feeder KGR parameter file after replacement

KCM-2 → Early generation KCM (KCM-1) : Not plug-and-play; Different hardware architecture, requires full program reconfiguration

KCM-2 → K10 / K10S Controller : Not directly interchangeable; Full system modernization and wiring modification required

KCM-2 → Third-party generic feeder controllers : Not recommended; Incompatible with K-Tron SFT load cell signal protocols, accuracy risks exist

Quality Control Procedure (SOP)

Incoming Inspection

Serial number verification; Visual inspection of enclosure, PCB, wiring terminals and display. Check for corrosion, burn marks and physical damage.
Bench Functional Live Test

Test platform equipped with simulation load cell and feeder drive simulator. Complete power cycle testing, weight signal sampling, speed regulation and alarm function verification. Generate formal test report.
Electrical Parameter Testing

Insulation resistance test, power supply ripple inspection, communication interface connectivity verification.
Circuit & Configuration Recording

Record hardware configuration; Photograph board and interface status for customer reference.
Final QC & Packing

QC engineer signs test report. Unit packed with anti-static protection, bubble wrap. Test photos and reports can be provided upon request.

Field Installation Pitfall Guide

Missing Parameter File (KGR File)

Fault risk: After replacement, feeder cannot run normally without matched feeder parameter file.

Tip: Back up KGR configuration file from original controller before removal. I have seen multiple plant shutdowns caused by lost parameter files.
Improper Load Cell Wiring & Shield Grounding

Risk: Noise interference causes weight signal jitter and unstable feeding.

Tip: Follow official wiring manual; single-point grounding for load cell cable shielding. Do not ground both cable ends.
Power-off Waiting Requirement

Risk: Internal high-voltage capacitors remain charged after power cut; premature enclosure opening leads to electric shock.

Tip: Cut power and wait minimum 3 minutes before opening the controller housing.
ESD Damage

Risk: Static electricity damages internal CPU and weighing signal circuits during maintenance.

Tip: Wear ESD wrist strap and use anti-static mat when opening the enclosure.
Incorrect Battery Maintenance

Risk: Internal CR2032 battery failure leads to configuration loss after power failure.

Tip: Replace battery every 5 years. Only use specified battery model; replace under power-off condition.