MSO-0008P-012 NCC, MSO-0008P-012 Datasheet - Page 106

• 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
5-6
2-20 A Current Monitor
IST-200T Series
FEATURES
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Operating Logic: The Current Monitor
senses AC load current passing through its
torroid transformer. In the OVER-CURRENT
mode, the on-board relay will initiate the
TRIP DELAY timer and illuminate the FAULT
LED when the sensed current is greater
than the TRIP POINT setting. If the sensed
current is still greater than the TRIP POINT
setting after the TRIP DELAY timer has
elapsed, the on-board relay will energize.
ed, the on-board relay will be un-energized
as long as the sensed current is greater
than the TRIP POINT setting. Once the
sensed current drops below the TRIP POINT
setting, the TRIP DELAY timer will start tim-
ing and the FAULT LED will illuminate. If the
sensed current is still less than the TRIP
POINT setting after the TRIP DELAY time
has elapsed, the on-board relay will ener-
gize and its contacts will change state.
reset itself when the sensed current returns
to its non-fault value if the NON-LATCH
mode is selected. However, if the LATCH
mode is selected, the on-board relay will
remain energized regardless of any sub-
sequent change in the sensed current. To
reset the fault in this mode, either remove
input power from unit and reapply it, or
switch to NON-LATCH mode.
a range of 2 to 20 A with a single loop of the
load wire passed through the torroid trans-
former. Greater sensitivity can be achieved
by passing multiple loops of the load wire
If the UNDER-CURRENT mode is select-
The Current Monitor will automatically
The Current Monitor is designed to sense
100% functionally tested
Low cost
Fault status LED
Adjustable trip delay timer
Adjustable trip point from 2 to 20 A
Selectable ouput modes:
– Latching
– Non-latching
Selectable sensing modes:
– Over-current
– Under-current
120 VAC and 240 VAC models
50/60 Hz operation
SPDT 10 A relay output
Epoxy encapsulated
CURRENT MONITORS
File #E59090
through the torroid transformer; two
turns would change the range to 1 to
10 A, four turns would change it to 0.5 to
5 A.
TYPICAL APPLICATION
As long as the operating current of the
motor is less than 10 A, the alarm will not
sound. If the motor draws greater than 10 A
for longer than 4.5 seconds, the FAULT LED
will light and the alarm will sound. Because
the NON-LATCH mode is set, the fault con-
dition will clear as soon as the current draw
of the motor drops below 10 A. When the
fault is cleared, the FAULT LED will turn off
and the alarm will stop sounding. If, how-
ever, the LATCH mode was selected and
an OVER-CURRENT fault is detected, the
fault will not clear when the motor current
draw dropped below 10 A. In this case, the
alarm would continue to sound until reset of
the Current Sensor by either removing and
reapplying power or by switching to NON-
LATCH mode.
SETTINGS:
MODE SELECT SWITCH:
LATCH
UNDER
CURRENT
MODE SELECT SWITCH
TRIP POINT: approx. 10 amps
TRIP DELAY: approx. 4.5 sec.
Non-Latching
Over-Current
NON-
min.
min.
POINT
DELAY
TRIP
TRIP
max.
max.
AC CURRENT SENSOR
LATCH
OVER
CURRENT
FAULT
COM
NO
NC
L1
L2
ALARM
MOTOR
Supply
Motor
120 or 240 VAC
Input Voltage
Voltage