NK TECHNOLOGIES ATQ Series User manual

INSTRUCTIONS
1. Route monitored wire through aperture, mount using
two screws and mounting feet.
2. Connect 0-5Hz/0-10Hz output to PLC (or other meter
device) using 14-18 AWG copper wires. Ensure
polarity is correct for Sink or Source connection (see
“Output Wiring” section) and programmed PLC
settings match recommended bandwiths.
3. Power supply must be 24VAC/VDC. Connect using 14 -
18 AWG copper wires. Power LED should be on
whenever power is connected to the unit.
4. Choose input range by positioning the Range Jumper.
Facing the 3-pin jumper, position jumper over top two
pins for High range, bottom two pins for Mid range,
and no jumper for Low range.
5. With current flowing through unit, check for proper
operation by confirming frequency output is propor-
tion to input current.
ATQ SERIES
AC Transducers
Frequency Output, Avg. Responding
ATQ 1 - 10K - 24U - SP
OUTPUT:
05K 0-5kHz
10K 0-10kHz
RANGE
0 - 0-2 or 5 Amps
1 - 0-10,20 or50 Amps
2 - 0-100,150 or 200 Amps
SENSOR TYPE:
ATQ - AC current transducers, average responding
Model Number KeySpecifications
Quick “How To” Guide
CASE STYLE
SP- Split Core
Input Maximums
ATQ0 0-2A 125 250
0-5A 125 250
ATQ1 0-10A 125 250
0-20A 150 300
0-50A 215 400
ATQ2 0-100A 300 600
0-150A 450 800
0-200A 500 1,000
MAXIMUMINPUTAMPS
MODEL RANGE 6SEC. 1SEC.
POWER SUPPLY:
24U- 24VAC/DC3
3511 Charter Park Drive, San Jose, CA 95136
Toll free: 800-959-4014 Phone: [phone]
Fax: [phone]
[email protected], www.nktechnologies.com ATQInstructions, 09/10,Rev3P/N29-210-0001
Know Your Power
Other NK Technologies Products Include:
AC & DC Current Operated Switches & Transducers
Ground Fault Sensors
1φ& 3φPower Transducers
Current & Potential Transformers (CTs&PTs)
Output Open collector transistor, opto-
isolated pulse width
Pulse Width 5kHz: On -- 90-100 µS, Off: Variable
10kHz: On -- 45-50 µS, Off: Variable
Current 2mA @ 8 VDC minimum
15mA @ 24 VDC maximum
Voltage 5-27 VDC
Limits Capped to 125% of range
05K model: 6.25kHz max
10K model: 12.5kHz max
Accuracy 1%FS
Isolation Voltage 5kV (Input to Output, Power to
Output)
Response Time 100 mS (to 90% of step change)
Input Freq. Range 10-400Hz
Input Current Ranges FieldSelectablefrom 0-200ACAmps
(SeeOrdering Information)
Power Supply 24VAC/VDCnominal
(19.2-26.4VAC/VDCrange)
Power Consumption <1VA
Case UL 94V-0 Flammability rated
thermoplastic
Environmental -20 to 50 Deg. C, 0-95% RH, non-
condensing
PATENTED

For All Versions
Run wire to be monitored through opening in the sensor.
ATQ Series transducers work in the same environment as
motors, contactors, heaters, pull-boxes, and other electrical
enclosures. They can be mounted in any position or hung
directly on wires with a wire tie. Just leave at least one inch
(25mm) distance between sensor and other magnetic de-
vices.
Split-Core Versions (SP Suffix)
Press the tab in the direction as shown to open the sensor.
After placing the wire in the opening, press the hinged por-
tion firmly downward until a definite click is heard and the
tab pops out fully.
KEEP SPLIT-CORE SENSORS CLEAN.
Silicone grease is factory applied on the mating surfaces to prevent
rust and improve performance. Be careful not to allow grit or dirt
onto the grease in the contact area. Operation can be impaired if
the mating surfaces do not have good contact. Check visually
before closing.
Description
Installation
Output Wiring
Range Select
Connect output wiring from PLC or other meter device to
the sensor. Use 14 to 18 AWG copper wire and tighten
terminals to 4 inch-pounds torque. Terminals are desig-
nated as follows: terminal 3 “C” for collector, terminal 4
“E” for emitter. Be sure to observe output polarity for a
SINK or SOURCE connection (diagrams below).
ATQ Series transducers feature field selectable ranges.
These ranges are factory calibrated, eliminating time con-
suming and inaccurate field setting of zero or span.
1. Determine the normal operating amperage of your moni-
tored circuit
ATQ Series transducers combine a current transformer and
a signal conditioner into a single package. This provides
higher accuracy, lower wiring costs, easier installation and
save valuable panel space. The frequency output is com-
patible with high speed counter inputs. This allows an au-
tomation system equipped with only Digital Inputs (DIs) to
accept and process an analog value.
ATQ Series provide an “Average Responding” output. Se-
lect ATQ Series for constant speed motors or On/Off loads
such as lamps or heaters.
2. Select the range that is equal to or slightly higher than
the normal operating amperage.
3. Place the range jumper in the appropriate position
(note: ATQ0 has only two ranges corresponding to
“High” or “Low” jumper positions.
.
1. Sensor has no output
A. Control Power is not connected or the right voltage Check
power supply voltage and connections.
B. Output Polarity is not properly matched. Check and cor-
rect wiring polarity
C. Split Core models: The core contact area may be dirty.
Open the sensor and clean the contact area.
2. Output Signal Too Low
A. The jumper may be set in a range that is too high for cur-
rent being monitored. Move jumper to the correct range.
B. The load current is not sinusoidal.
C. Monitored current is below minimum required.
Loop the monitored wire several times through the aper-
tureuntil the “sensed” currentrisesabove minimum. Sensed
Amps = (Actual Amps) x (Number of Loops). Count loops
on the inside of the aperture.
3. Sensor is always at 0 Hz
A. Monitored load is not AC or is not on. Check that the
monitored load is AC and that it is actually on.
4. Output Signal is always at maximum Hz
A. The jumper may be set in a range that is too low for cur-
rent being monitored. Move jumper to the correct range.
Trouble Shooting
OutputConnectionNotes:
• Captive screw terminals, 14-18 AWG solid or stranded.
•Open Collector transitor output, opto-isolated.
•See label for ranges & jumper positions
•Observe Polarity
SINK Connection SOURCE Connection
Power Wiring
Connect the power wires to Terminals 1 & 2. Use 14-18
AWG copper wire and tighten terminals to 4 inch-pounds
torque. The power input is not polarity sensitive. The
POWER LED should be lit to indicate whenever control
power is supplied to the unit.
PowerConnectionNote:
Be sure that the power applied matches the nominal volt-
ageshown on thelabel (24VAC/VDC)! Highervoltages may
cause damage to the unit.