Automationdirect.com AcuAMP ACT Series Інструкція з монтажу - Сторінка 2
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Друкувати сторінкуDescription
The ACT/ACTR Series transducers combine a current
transformer and a signal conditioner into a single package.
This provides higher accuracy, lower wiring costs, easier
installation and saves valuable panel space. Both the ACT
and ACTR are available in a split core housing with a 4-20mA
output proportional to the primary AC current. ACTR series
feature a True RMS output. They are designed for application
on distorted current wave forms such as VFD outputs.
Installation
Place wire or bus bar to be monitored through the sensing
aperture.
The ACT/ACTR 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 or snapped
directly to a 35mm DIN rail. Just leave at least one inch
distance between sensor and other magnetic devices.
Power Supply
Minimum Power Supply = 12 VDC + Total Loop Voltage
Drop
32V
LOOP
22V
POWER
(VDC)
12V
0
250
500
Total Loop Impedance (Ohms)
Intended for use with a Class 2 source with the secondary fused
to limit power to a maximum of 100 VA.
Output Wiring
Connect control or monitoring wires to the sensor. Use up to
22 to 14 AWG rated minimum 75°C copper wire and tighten
terminals to 5-7 in-lbs torque. Be sure the output load does
not exceed 600 ohms with 24VDC power supply.
Connection Notes:
• Captive screw terminals
• 14-22 AWG solid or stranded
• Observe polarity
(PLC, meter)
Model Range Select
The ACT/ACTR Series transducers feature factory-calibrated
Operating
ranges. This eliminates time-consuming and inaccurate field
Range
setting of zero or span.
1.
Determine the normal operating amperage of your
750
1000
monitored circuit using load specifications or a test
ammeter.
2.
Select the model with a range that is equal to or slightly
higher than the normal operating amperage.
-
+
-
-
+
+
Load
24VDC
Power
Troubleshooting
1. Sensor has no output.
A. Power supply is not properly sized.
Check power supply voltage and current rating.
B. Polarity is reversed.
Check and correct output wiring polarity.
2. Output signal too low.
A. The range may be too high for current being monitored..
Exercise care when selecting the model range.
B. The load current is not sinusoidal.
Select an ACTR transducer for use with distorted waveforms.
C. Monitored current is below minimum required.
Loop the monitored wire several times through the aperture
until the "sensed" current rises above minimum.
Sensed Amps = (Actual Amps) x (Number of Loops).
Count loops on the inside of the aperture.
3. Sensor is always at 4mA.
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 20mA.
The range is too low for current being monitored.
Select a model with a higher range.