How to Use Milnor
®
Electrical Schematic Diagrams
PELLERIN MILNOR CORPORATION
Figure 2: Time Delay Relay (CD)
Coil and Contacts Legend
.
A. Coil
B. Contacts
CL=Control, Latch Relay (Figure 3)—A relay which latches in an energized or set position
when operated by one coil (the latch/set coil). The relay stays latched even though coil voltage
is removed. The relay releases or unlatches when voltage is applied to a second coil (the
unlatch/reset coil).
Figure 3: Latch Relay (CL)
Coils and Contacts Legend
.
A. Coils
B. Contacts
CR=Control, Relay (Figure 4)—A relay whose contacts switch immediately when voltage is
applied to its coil and revert to normal when the voltage is removed.
Figure 4: Standard Relay (CR)
Coils and Contacts Legend
.
A. Coil
B. Contacts
CP=Control, Photo-Eye (Figure 5)—Photo-eyes sense the presence of an object without direct
physical contact. Photo-eyes consist of a transmitter, receiver, and output module. These
components may be housed in one assembly with the transmitter bouncing light off of a
reflector to the receiver, or these components can be housed in two separate assemblies with
the transmitter pointed directly at the receiver. The photo-eye can be set to turn on its output
either when the light beam becomes blocked (dark operate) or when it becomes un-blocked
(light operate).
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