Pellerin Milnor Corporation 35
3.2.6 Photoeyes and Proximity Switches
BNWUUH01.C11 0000351752 A.5 B.21 A.16 11/15/21 3:20 PM Released
Figure 18. Speed Sensor (photoeye) on Some Machines
View of Cylinder Pulley and Speed Sensor
Legend
1...Cylinder pulley (cone)
2...Bracket attached to bearing
housing.
3...Speed sensor (photoeye). The sen-
sor sees the holes in the cone and
gives pulse data to the controller. If
dust collects on the lens, this data
can be incorrect. An error will oc-
cur and operation will stop.
Figure 19. Proximity Switches These are examples. Your machine can look different.
1 Station Press
Centrifugal Extractor Shuttle Conveyor
Typical Proximity Switch
Legend
→...Area that must be clean. Remove contamination with a soft cloth. If
the area is hard to reach, use a cloth on the end of a wood dowel or
metal rod. If necessary, use a safe cleaning agent.
3.2.7 How to Do a Test of Emergency Stop Mechanisms
BNWUUH01.C05 0000335566 A.5 B.21 A.4 2/23/21 11:58 AM Released
This test applies to machines that have one or more stop mechanisms in addition to the Stop but-
ton (
). Do this test at the intervals given in the maintenance summary.
Definitions:
3-wire circuit a series electrical circuit on a Milnor
®
machine that must close before the ma-
chine can operate. If a switch in the circuit opens, machine movement stops and the operator
alarm (a buzzer and a display message) comes on. When you push the start button (
), this
closes the 3-wire circuit, which stops the operator alarm and lets the machine operate.
emergency stop mechanism a manual control that opens the 3-wire circuit when a person or
object operates the control. Examples - emergency stop button, kick plate, pull cord.
Routine Maintenance
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