Cutler Hammer, Div of Eaton Corp EACR Series, EAC Series Installation Instructions
Installation Instructions
CurrentWatch™ EAC and EACR Series Current Sensors
WARNING
IN ORDER TO AVOID ELECTRIC SHOCK OR OTHER POSSIBLE INJURY:
• DO NOT USE THIS PRODUCT FOR HUMAN SAFETY APPLICATIONS.
IT WAS NOT DESIGNED, TESTED OR RECOMMENDED FOR THIS
USE.
• DO NOT USE THIS PRODUCT IN HAZARDOUS LOCATIONS (E.G.
EXPLOSIVE ATMOSPHERES). IT WAS NOT DESIGNED, TESTED OR
RECOMMENDED FOR THIS USE.
• ENSURE THE PRODUCT IS PROPERLY WIRED TO THE CORRECT
POWER SUPLLY FOR THE APPLICATION. REFER TO THE
SPECIFICATIONS AND WIRING DIAGRAMS IN THIS MANUAL.
MODELS COVERED IN THIS MANUAL
Catalog Number Description
EAC105SC Self-Powered, Solid Core, 0-5V DC Output, 10/20/50A Range
EAC205SC Self-Powered, Solid Core, 0-5V DC Output, 100/150/200A Range
EAC105SP Self-Powered, Split Core, 0-5V DC Output, 10/20/50A Range
EAC205SP Self-Powered, Split Core, 0-5V DC Output, 100/150/200A Range
EAC110SC Self-Powered, Solid Core, 0-10V DC Output, 10/20/50A Range
EAC210SC Self-Powered, Solid Core, 0-10V DC Output, 100/150/200A Range
EAC110SP Self-Powered, Split Core, 0-10V DC Output, 10/20/50A Range
EAC210SP Self-Powered, Split Core, 0-10V DC Output, 100/150/200A Range
EAC0420SC 24V DC Loop-Powered, Solid Core, 4-20 mA Output, 2/5A Range
EAC1420SC 24V DC Loop-Powered, Solid Core, 4-20 mA Output, 10/20/50A Range
EAC2420SC 24V DC Loop-Powered, Solid Core, 4-20 mA Output, 100/150/200A Range
EAC0420SP 24V DC Loop-Powered, Split Core, 4-20 mA Output, 2/5A Range
EAC1420SP 24V DC Loop-Powered, Split Core, 4-20 mA Output, 10/20/50A Range
EAC2420SP 24V DC Loop-Powered, Split Core, 4-20 mA Output, 100/150/200A Range
EACR0420SC 24V DC Loop-Powered, Solid Core, 4-20 mA Output, 2/5A Range
EACR1420SC 24V DC Loop-Powered, Solid Core, 4-20 mA Output, 10/20/50A Range
EACR2420SC 24V DC Loop-Powered, Solid Core, 4-20 mA Output, 100/150/200A Range
EACR0420SP 24V DC Loop-Powered, Split Core, 4-20 mA Output, 2/5A Range
EACR1420SP 24V DC Loop-Powered, Split Core, 4-20 mA Output, 10/20/50A Range
EACR2420SP 24V DC Loop-Powered, Split Core, 4-20 mA Output, 100/150/200A Range
P51917 Rev 01
291002131
INTRODUCTION (Con’t)
The CurrentWatch™ EACR Series
provide “True RMS” output. Available
only with a 4-20 mA output. Select EACR
Series sensors for applications involving
variable speed or SCR-controlled loads.
INSTALLATION
Considerations for all EAC and EACR Series models…
• Run wire to be monitored through the aperture (opening) in the
switch body
• These sensors can be located in the same environment as motors,
contactors, heaters, pull-boxes and other electrical enclosures
• Mounting can be done in any position or hung directly on a wire
with a wire tie
• Be sure to leave at least one inch distance between sensor and
other magnetic devices
Considerations for split-core models only…
• Press the tab in the direction
shown in the diagram to the right.
• After placing the wire in the
aperture, press the hinged portion
fi rmly downward until a click is
heard and the tab pops out fully.
• Keep split-core contact areas
clean. Silicon grease is factory applied on the mating surfaces to
prevent rust and improve performance. Be careful not to allow
grit or dirt into the grease in the contact area, particularly on core
mating surfaces of split core models. Sensor operation could be
impaired if mating surfaces do not have good contact. Check
visually before closing.
QUICK INSTALL GUIDE
The below steps can be followed to quickly install a CurrentWatch™
EAC or EACR Series switch.
1. Run the wire to be monitored through the aperture
2. Mount the sensor to a surface if needed
3. Connect output wiring
a. Use up to 14 AWG copper wires
b. If using a 0-5 or 0-10V DC output model, make sure output
load is at least 1 megohm
c. If using a 4-20 mA output model, make sure loop voltage is
correct (see “Output Wiring” section)
4. Select range
a. Choose the correct range by positioning the Range Jumper
Important:
Keep contact areas clean
To open:
Press tab inward
towards hinge
INTRODUCTION
The CurrentWatch™ EAC Series combine a
current sensor and signal conditioner into
a single package. The EAC Series are
available in solid or split core with 4-20 mA,
0-5V DC or 0-10V DC outputs.
Effective: April 2007 Page 1
Questions? Call our Sensor Application Engineers at (800) 426-9184.
P51917 Rev 01
291002131
RANGE SELECTION
The CurrentWatch™ EAC Series sensors feature fi eld selectable ranges.
The ranges are factory calibrated, eliminating time consuming and
inaccurate fi eld setting of zero or span.
Setting Range
1. Determine the normal operating amperage of your monitored
current
2. Select the range this is equal to or slightly higher than the normal
operating amperage
3. Place the Range Jumper in the appropriate position
OUTPUT WIRING
Connect control or monitoring wires to the sensor. Use up to 14 AWG
copper wire and tighten terminals to 5 inch-pounds torque. Be sure the
output load or loop power does not exceed the sensor rating.
Connection Notes:
• Captive screw terminals
• Use 14-22 AWG solid or stranded
• Observe polarity
• See label for ranges and jumper positions
Model Wiring Diagram
Current Output
Models (4-20 mA)
Voltage Output
Models
(0-5/0-10V DC)
Loop Voltage Requirements:
• EAC Series: Min. Loop Voltage = 5V + (Loop Resistance x 20 mA)
• EACR Series: Min. Loop Voltage = 12V + (Loop Resistance x 20 mA)
Power
Supply
Monitored
Wire
Monitored
Wire
Notes for Voltage Output Models:
• Recommended output load greater than 1 megohm
• Add 1.3% error for 100 kilohm
Load (Controller, Meter...)
Load (Controller, Meter...)
MAXIMUM INPUT AMPS
Maximum Amps
Range
0-2A 80A 125A 250A
0-5A 100A 125A 250A
0-10A 80A 125A 250A
0-20A 110A 150A 300A
0-50A 175A 215A 400A
0-100A 200A 300A 600A
0-150A 300A 450A 800A
0-200A 400A 500A 1,000A
Continuous 6 sec. 1 sec.
TROUBLESHOOTING
Problem
Sensor has no output Power supply is not properly
Output signal is
too low
Output signal is
always at maximum
Output signal is
always at 4 mA
Solution for Current
Output Models
sized. Check power supply
voltage and current rating.
Polarity is not properly matched. Check and correct wiring polarity.
For split core models, the core contact area may be dirty. Open the
sensor and clean the contact area.
The jumper may be set in a range that is too high for current being
monitored. Move jumper to the correct range.
The load current is not sinusoidal
(EAC Series only). Select an EACR
Series sensor that works on
distorted waveforms.
Monitored current is below minimum required. Loop the monitored wire
several times throug the aperture until the “sensed” current rises above
minimum. (‘Sensed Amps’ is equal to ‘Actual Amps’ multiplied by the
‘Number of Loops.’)
The jumper may be set in a range that is too low for current being
sensed. Change the jumper position.
Monitored load is not AC or is not
on. Check that the monitored load
is AC and that it is actually on.
Solution for Voltage
Output Models
Monitored load is not AC or is not
on. Check that the monitored load
is AC and that it is actually on.
Output load may be too low.
Check output load, making sure
it is at least 100 kilohm and
preferably 1 megohm.
—
SPECIFICATIONS
Specifi cation Models with
4-20 mA Output
Power Supply 24V DC
Loop-Powered
Output Signal 4-20 mA 0-5V DC 0-10V DC
Output Limit EAC Series:
32 mA
EACR Series:
23 mA
Output Load — Recommended 1 megohm, add 1.3% error
Response Time EAC Series:
300 ms
EACR Series:
100 ms
Frequency Range EAC Series:
20-100 Hz
EACR Series:
10-400 Hz
(Both Sinusoidal)
Accuracy 1% FS
Isolation Voltage UL Listed to 1,270V AC, Tested to 5,000V AC
Sensing Aperture Solid Core Models: 0.75 in. (19mm) dia.
Split Core Models: 0.85 in. (21.7mm) sq.
Housing UL94 V0 Flammability Rated
Environmental Operating Temperature: -4 to +122° F (-20 to +50° C)
Humidity: 0-95% RH, Non-Condensing
Approvals UL and ULC Listed
CE Certifi ed
Models with
0-5V DC Output
Self Powered–No Power Supply Needed
10V DC 15V DC
for 100 kilohm (see “Output Wiring”)
100 ms
50-60 Hz (Sinusoidal)
Models with
0-10V DC Output
Effective: April 2007 Page 2
Questions? Call our Sensor Application Engineers at (800) 426-9184.
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