KUAX671 671.022.16 Cam Controller

The KUHNKE KUAX671 671.022.16 represents a specialized variant within the KUAX 671 family, engineered for applications where process continuity is critical. Unlike standard models where a single short circuit shuts down all outputs, the 671.022.16 features selective output shutdown—only the faulty output is disabled while the remaining 15 outputs continue normal operation. This unique capability makes it indispensable for assembly lines, packaging machinery, and continuous web processes where an unexpected full system stop would cause material waste or production delays.

Beyond fault isolation, the KUHNKE KUAX671 671.022.16 integrates a diagnostic reporting system using two dedicated output channels (A00 and A01). Output A00 reports either a short circuit condition at any output or a parity error in the active program, without stopping controller operation. Output A01 monitors the Lithium battery voltage and triggers when it falls below 3.4 V, giving maintenance personnel a 4-week window to replace the battery while the unit remains powered on. These diagnostic outputs can be wired to a PLC, warning light, or building management system for remote alerting.

Operationally, the KUHNKE KUAX671 671.022.16 retains all core capabilities of the KUAX 671 series: absolute encoder support (180/360/1000 steps/rev), up to 128,000 cams distributed across 8 programs, and programming via the KUAX 671 PG hand terminal or PC-based NOBES software. The controller uses a 24 V DC power supply and features optically isolated outputs (open emitter, 0.4 A per channel) with integrated freewheeling diodes for inductive loads.

When a short circuit occurs on any output, the KUHNKE KUAX 671.022.16 disables only the faulty channel while leaving the other 15 outputs fully operational. This prevents a single failed valve or solenoid from stopping an entire production line, making this controller ideal for continuous processes where downtime directly impacts material waste and profitability.

The KUHNKE KUAX 671.022.16 provides two external alarm outputs that signal specific fault conditions. A00 activates for short circuits or parity errors; A01 activates when the internal Lithium battery drops below 3.4 V. These signals can be wired directly to a PLC input, a stack light, or a building management system, enabling remote condition monitoring without requiring an operator to check the controller front panel.

Unlike standard KUAX 671 controllers that shut down outputs upon detecting a parity error, the KUHNKE KUAX 671.022.16 continues normal operation while reporting the error via the PARITY LED and diagnostic output A00. This allows production to continue until a scheduled maintenance window, at which point the affected program can be deleted (using DEL key) and reloaded from a backup.