Photoeyes And Proximity Switches; How To Do A Test Of Emergency Stop Mechanisms; Figure 18 Speed Sensor (Photoeye) On Some Machines - Milnor MWF36J8 Bedienungsanleitung

3.2.6

Photoeyes and Proximity Switches

Figure 18. Speed Sensor (photoeye) on Some Machines
View of Cylinder Pulley and Speed Sensor
3.2.7

How to Do a Test of Emergency Stop Mechanisms

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
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 (
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.
emergency stop button a red push button on a yellow field that locks when a person pushes it
(the electrical contacts stay open). It is necessary to turn the button clockwise to unlock it. A
machine can have zero or more emergency stop buttons.
kick plate a metal plate on a shuttle conveyor that operates a switch when an object applies suf-
ficient force to the plate. The kick plate is usually the first component of the shuttle to hit an
object in the shuttle path. All Milnor
the two sides of the machine.
WARNING: — You can be killed or severely injured if a shuttle strikes you even if you
pull cord a wire on a conveyor that operates a switch when a person pulls the wire. All Milnor
free-stand conveyors (a conveyor that is not a component of a larger machine) have pull cords
on the two sides of the conveyor.
Pellerin Milnor Corporation
® shuttles that go left/right on a path have kick plates on
come in contact with the kick plate first.
Never do a test of the kick plate when the shuttle operates.
�
BNWUUH01.C11 0000351752 B.1 G.3 C.2 12/13/21, 11:31 AM Released
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.
BNWUUH01.C05 0000335566 B.1 G.3 A.4 2/23/21, 11:58 AM Released
® machine that must close before the ma-
Routine Maintenance
Legend
), this
®
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