Giddings & Lewis 840-21252-01 HMI Operator Panel

Technical SpecificationsModel：840-21252-01 Brand：Giddings & Lewis Product Type: CNC machine operator HMI display panel for PiC900 control system

Module Feature:Function: Human-machine interface terminal for G&L PiC900 CNC system, used for program editing, axis jog operation, parameter setup, machine status monitoring and fault diagnosis on heavy boring mills and machining centers. Display: Industrial LCD display with keypad / touch interface Communication: Serial bus interface to connect with PiC900 CPU Operation function: G-code program upload/download, manual jog, alarm message display, axis position real-time readout Front panel: Sealed industrial front panel, dust and splash resistance for machine cabinet environment LED indicators: POWER, COM, ALARM status lights Hardware self-diagnosis: Panel self-test, communication link detection, backlight fault monitoring Programming software: PiCPro for HMI screen configuration and parameter management

Electrical ParametersRated supply:24VDC control power Power consumption:Max 22W

Mechanical & Structure:Mounting: Cabinet cutout panel mount Weight:4.2kg Protection class:IP54 on front face

Environmental:Operating temperature:0℃ ~ +50℃ Ambient humidity:5~85% non-condensing Certification:CE Status:Manufacturer discontinued legacy CNC HMI panel

System compatibility840-21252-01 works with Giddings & Lewis PiC900 control platform, compatible with PiC900 CPU boards, I/O modules and SERCOS servo drives. Widely fitted on G&L 70A horizontal boring mills and PMC series CNC boring machines.

Function840-21252-01 is industrial HMI operator panel manufactured by Giddings & Lewis. It serves as the operator interface between machinist and PiC900 CNC controller. Operators can execute manual jog, edit part programs, view real-time axis position, check alarm logs and modify machine parameters. The sealed front panel withstands workshop dust and coolant splashes. It is critical operating terminal spare for legacy heavy G&L CNC machine tools.

InstallationFollow lockout/tagout safety procedure before installation. Disconnect 24VDC power supply. Install panel into electrical cabinet cutout and secure mounting clamps. Connect 24VDC power cable and serial communication cable to PiC900 controller. Configure panel address and screen parameters in PiCPro software. Power on and test display, keypad and communication function.

Interface24VDC power terminal,serial communication port,front panel keypad/display,on-board POWER / COM / ALARM LED indicators for Giddings & Lewis 840-21252-01.

DiagnosticNo display:Check 24VDC control power supply or backlight failure. COM alarm:Serial cable damage, loose connector or wrong panel address. Keypad no response:Front panel membrane wear or internal board fault.

Product Brief840-21252-01 is Giddings & Lewis legacy PiC900 CNC HMI operator panel,for machine operation,program edit and status monitoring on heavy CNC boring mills,discontinued machine tool HMI spare.