MSO-0008P-012 NCC, MSO-0008P-012 Datasheet - Page 111

• Manufacturer Part Number: MSO-0008P-012
• Description: Socket, Relay; 8 Pin Octal
• Manufacturer: NCC
• Type: Octalr

Specifications of MSO-0008P-012

• Number Of Contacts: 8
• Time Range: 0.05 Sec. to 999 Min.
• Output Rating: 10 A @ 240 VAC Max.; 100 mA @ 5 VDC Min.
• Operating Temperature: –23°C to +55°C

AMETEK National Controls Corp. • 1725 Western Drive • West Chicago, Illinois 60185 • Tel: [phone] • 630-231-5900 • FAX: [phone] • www.nationalcontrols.com
Ms One one-thousandth of a second
(.001 or 10
Minimum Load Current For electro-
mechanical contacts, it is the minimum
current the contacts will reliably switch
without the contact resistance contribut-
ing a substantial error in the circuit. See
Holding current.
Mode of Operation Logical function of a
controller based on input parameters.
Momentary Initiation The initiation of a
controller cycle by a start pulse of shorter
duration than the complete cycle. The ini-
tiation could be with a momentary contact
closure or voltage pulse.
Momentary Loss of Power A short
removal of input power to the controller or
controlled circuit. See Brownout.
Momentary Switch A spring loaded
set of contacts, that when the actuator
is pressed, the contacts either close or
open depending on contact configuration.
When the actuator is released the con-
tacts will resume their normal state.
MOV Metal oxide varistor.
Noise An undesirable electrical phenome-
non which is generated by various means
(e.g., switching large loads, light dimmers,
electrical storms). This phenomenon
consists of random voltages and currents
induced into electrical circuits, if severe
enough, erratic operation of these circuits
can result.
Nominal Voltage The middle point of
two extremes of voltage as defined by the
tolerance.
Normally Closed Contact (NC) The
condition or position of a particular con-
tact with respect to a common contact
in its normal or quiescent (unenergized)
state. A normally closed contact repre-
sents a closed circuit.
Normally Open Contact (NO) The con-
dition or position of a particular contact
with respect to a common contact in its
normal or quiescent (unenergized) state. A
normally open contact represents an open
circuit.
Octal Plug A circular 8-pin male connec-
tor with an indexing key for proper orienta-
tion in the mating socket.
-3
second).
Offset A fixed difference between the
controller setpoint and the actual control
point of a system under stable operating
conditions.
Ohm A unit of electrical resistance and
impedance named after Georg S. Ohm.
A conductor has a resistance of one
ohm when a current of one ampere flows
through it with a potential of one volt
across its terminals.
ON/OFF Time Ratio The ratio of ON time
to OFF time specified as a fraction or per-
centage of the total period.
On State Voltage The voltage measured
across a solid state output device when it
is in the ON state. For all practical consid-
erations the value is the same for Peak or
RMS measurements. NOTE: The portion
of the sine wave before the solid state
device turns ON is not to be included in
this measurement.
Operating Temperature The range of
ambient temperature in which a controller
is designed to operate within its specifi-
cations. May be stated in Fahrenheit or
Celsius.
Operating Voltage The range of input
voltage within which a controller is
designed to operate. Usually, it is stated
as a nominal value with a maximum and
minimum tolerance (e.g., 120 VAC +10%).
Optical Isolation Utilizing light to isolate
one control circuit from another; mainly
used to safely interface a low level control
signal with a high power output, as in a
solid state relay.
Output The result delivered by a circuit or
device. Also, the terminal or other location
where such result is delivered.
Parallel A type of circuit connection in
which loads are connected side by side
across a common voltage source.
Phase The instantaneous angular posi-
tion which a sine wave occupies in its
cycle. The position is usually measured
in degrees as referenced to zero and
referred to as phase angle.
Polarity The positive and negative orien-
tation of a source of power or signal.
Potential Difference The voltage differ-
ential between two points.
Potentiometer (POT) A three terminal
device which consists of a fixed resistor
with terminations on each and a moveable
contact (wiper) that can travel between
the two terminations. Also called a vari-
able resistor.
Power In a Direct Current circuit it is the
product of applied potential difference and
current. In an Alternating Current circuit it
is the product of the effective values of the
voltage and current with the cosine of the
phase angle between current and voltage.
The units of measurement are VA or watt.
Power Factor The ratio of true power to
apparent power in an alternating current,
or a ratio of resistance to impedance.
Quick Connect Terminals (Fast-on) A
solderless friction type termination used in
industrial controls to facilitate field wiring
of electrical control systems.
RC Resistor/capacitor network. See also
Snubber Network.
Rectifier (Diode) An electronic device
which allows current to flow in only one
direction. It is used to convert AC to DC.
Repeatability (Repeat Accuracy) The
percent variation of time within a group of
consecutive timing cycles, starting with
the second operation, when the timing
device is operated under constant condi-
tions of operating voltage, ambient tem-
perature, and ON/OFF times.
Reset Time The time a controller takes to
return to its initial parameters when input
power is removed.
Resistance The opposition to electric
current flow. All conductors offer some
resistance and the basic unit of resistance
is the ohm.
Resolution The degree of accuracy to
which a controller can be set to or the
degree of accuracy of an output function,
as in a digital readout of a specific output.
Rheostat A variable resistor having one
moveable contact (wiper), and one termi-
nal fixed at one end of the resistance. A
potentiometer can be connected as rheo-
stat by connecting the wiper to either one
of its other terminals.
GLOSSARY
6-3