cov khoom

Lub watchdog module saib xyuas cov txheej txheem tsis suav nrog: • daim ntawv thov lub voj voog lub sijhawm ua tiav siab tshaj plaws txhawm rau txhawm rau txheeb xyuas seb cov txheej txheem puas ua tiav nws txoj haujlwm raug thiab tsis yog looping (hang-up). • daim ntawv thov lub voj voog tsawg kawg yog lub sijhawm ua tiav txhawm rau txhawm rau txheeb xyuas yog tias lub tshuab ua haujlwm ua tiav nws txoj haujlwm raug thiab tsis hla qhov program. • 5 Vdc voltage xyuas rau overvoltage thiab undervoltage (5 Vdc ± 5%). • nco yuam kev logic los ntawm CPU, COM thiab MEM modules. Nyob rau hauv cov ntaub ntawv ntawm lub cim xeeb yuam kev, lub watchdog tso zis yog de-energized. • ESD cov tswv yim los de-energize lub watchdog tso zis ntawm nws tus kheej los ntawm lub processor. Qhov no ESD cov tswv yim yog 24 Vdc thiab galvanically cais tawm ntawm sab hauv 5 Vdc. Txhawm rau kom muaj peev xwm ntsuas WD module rau txhua qhov haujlwm, WD module nws tus kheej yog 2-tawm-ntawm-3-tsim kev pov npav. Txhua ntu saib xyuas cov kev ntsuas tau piav qhia saum toj no. Qhov siab tshaj plaws WDG OUT tso zis tam sim no yog 900 mA (fuse 1A) 5 Vdc. Yog hais tias tus naj npawb ntawm cov zis modules ntawm tib 5 Vdc mov yuav tsum muaj ntau dua tam sim no (tag nrho ntawm WD input tam sim no ntawm cov zis modules), ces yuav tsum tau siv lub watchdog repeater (WDR, 10302/1/1), thiab cov load yuav tsum muab faib rau WD thiab WDR.