7713395 R2 79
4.4.3 Plenum Door Safety Switch
The plenum door safety switch is mounted on the top right-hand corner of the plenum entry door.
Note
When the door is open, the emergency stop alarm will appear on the HMI screen. This will turn OFF all
outputs from the PLC. It does NOT shut off power into either Control Panel. The Power ON lamp will
remain lit on the main Control Panel. Close plenum door for dryer operation.
DoorOpen:E‐Stopactive
(Closedoortoresetalarm)
DoorClosed:Switchisaligned.
Normaloperationpermitted
Theplenumdoorsafetyswitchismountedinthetopright‐handcorneroftheplenum
entrydoor.Whenthedooris open,theemergencystopalarmwillappearontheHMI
screen.ThiswillturnOFFalloutputsfromthePLC.ItdoesNOTshutoffpowerinto
eitherControl
Panel.ThePowerONlampwillremainlitonthemainControlPanel.
Closeplenumdoorfordryeroperation.Besuretofollowproperlock‐out/tag‐out
procedurespriortoenteringthedryer.
Be sure to follow proper lockout/tagout procedures prior to entering the dryer.
CONTINUOUS MIXED-FLOW GRAIN DRYER WITH COMMANDER CONTROL SYSTEM 4. OPERATION