
Installing Accessories
E-S 500 / 502 Classic Series Instruction Manual
5.8
Accessory manuals for most make and model accessories
can be found on the web at:
www.EstateSwing.com/accessories
The accessory manuals you have or find at the above address may be
written to coincide with that manufacturers model of gate opener. To
determine correct terminals on your Estate Swing operator, use the
accessory terminal section of your Estate Swing manual. The following are
some common terms and abbreviations found in manuals:
Normally Open – abbr. N/O – Indicates a circuit that is left open during
normal operation of the gate operator. When a device closes this circuit it
signals the operator to perform a function. This circuit is the main circuit for
entry devices. (i.e. keypads, exit wands, push buttons, etc.)
Normally Closed – abbr. N/C – Indicates that in order for the gate opener
to be active this circuit must be closed. When a device opens this circuit it
stops the motion of the gate operator. This circuit is the main circuit for
safety devices. (i.e. photo eyes, safety loops, etc.)
Common – abbr. COM – This is the matching terminal for both Normally
Open and Normally Closed circuits to be connected to. Accessory wiring
that begins in a N/O or N/O terminal must have a wire that ends in a
Common terminal.
Ground – abbr. GND or GRD – Ground is sometimes also known as
negative. Common terminals are the same as Ground terminals. Ground
can also be the negative spade of the battery if it is being used in
association with positive voltage.
If a device has both a N/O and a N/C wire, both are never used at the
same time. Some devices can be used as either an opening device or a
safety device (i.e. gate crafters exit wand, NIR photo eye, etc.) If being
used as an opening device use the N/O and if being used as a safety
device use the N/C terminals.
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