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Specifications
Case: Polycarbonate
Contact Rating: 10 A
Coil Circuit Resistance: 339 ohms ± 10% 12 Volt
678 ohms ± 10% 24 Volt
Minimum Latch Voltage: 12 Volt model: 10 VDC
24 Volt model: 20 VDC
Minimum Latch Current: 12 Volt model: 30 mA
24 Volt model: 30 mA
Operating Temperature Range: -40 to 176°F (-40 to 80°C)
Installation and Operation of the
518PH and 518APH TATTLETALE
®
518-92178N
Revised 02-01
Section 25
(00-02-0187)
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
✔ Disconnect all electrical power to the machine.
✔ Make sure the machine cannot operate during installation.
✔ Follow all safety warnings of the machine manufacturer.
✔ Read and follow all installation instructions.
Please read the following information before installing. A visual inspection of this product for damage during shipping is
recommended before mounting. It is your responsibility to have a qualified person install this unit.
GENERAL INFORMATION
2-5/16 in.
(59 mm)
2-5/8 in.
(67 mm)
2-15/32 in.
(63 mm)
Applies to 518APH model.
9/16 in.
(14 mm)
13/16 in.
(21 mm)
Panel
Lockwasher
Hex
Nut
Instruction
Plate
TATTLETALE
®
25/64 in.
(10 mm) dia
1/4 in.
(6 mm) dia
Mounting Holes
Installation
Dimensions and Installation
“Loop Circuit” Wire Length in Miles @ 77°F (25°C)
Resistance in Ohms
Maximum recommended Loop Circuit resistance
for proper operation of TATTLETALE
®
.
CAUTION: Certain dangers to human safety and to equipment may occur if some equipment is stopped without pre-warning. It is recommended
that monitored functions be limited to alarm only or to alarm before shutdown.
518-92178N page 1 of 2