Automationdirect.com ACT750 Instructions d'installation - Page 2

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Description
ACT 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.
ACT Series are available in fixed or split core with
4-20 mA or 0-10 VDC outputs. Select ACT Series for
constant speed loads, On/Off loads or sinusoidal
waveform loads.
ACTR Series units are available in 4-20 mA output only.
The ACTR Series provides a "True RMS" output. Select
ACTR Series for variable speed, SCR controlled loads or
non-sinusoidal waveform loads.
Installation
For All Versions
Run wire to be monitored through the opening in the
sensor. ACT and 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. Leave at least one inch
distance between the sensor and other magnetic
devices.
Split-Core Versions (-S Suffix)
Press the tab in the direction as shown to open the
sensor. After placing the wire in the opening, press the
hinged portion firmly downward until a definite click is
heard and the tab pops out fully.
I
m
K
e
A
e r
T
P
T
o
w
KEEP SPLIT-CORE SENSORS CLEAN.
K
E
E
P
S
P
I L
- T
C
O
R
E
S
E
N
S
O
R
S
C
L
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.
Connect control or monitoring wires to the sensor. Use
up to 12 AWG copper wire and tighten terminals to 5
inch-pounds torque. Be sure the output load or loop
power requirements are met (see diagram at right).
Connection Notes:
Range Selection
ACT Series transducers feature field selectable ranges.
The ranges are factory calibrated, eliminating time
consuming and inaccurate field setting of zero or span.
1 1 . . S S e e n n s s o o r r h h a a s s n n o o o o u u t t p p u u t t
2 2 . . O O u u t t p p u u t t s s i i g g n n a a l l t t o o o o l l o o w w
p
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.
3 3 . . O O u u t t p p u u t t s s i i g g n n a a l l i i s s a a l l w w a a y y s s a a t t m m a a x x i i m m u u m m
Output Wiring
• Captive screw terminals
• 12 - 22 AWG solid or stranded wire
• Observe polarity
• See label for ranges and jumper positions
1. Determine the normal operating amperage of the
monitored circuit
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
(750/2000 series have a 3-position switch rather than a
Troubleshooting
jumper).
0-10 VDC Models
A. Polarity is not properly matched.
Check and correct wiring polarity
B. Monitored load is not AC or is not on.
Check that the monitored load is AC and is actually on.
C. Split Core models: The core contact area may be dirty.
Open the sensor and clean the contact area.
A. The jumper may be set in a range too high for current
being monitored.
Move jumper to the correct range.
B. Output load too low
Check output load; be sure it is at least 100K , and
preferably 1M ..
C. Monitored current is below minimum required.
Loop the monitored wire through the aperture sever-
al times until the "sensed" current rises above mini-
mum.
Sensed Amps = (Actual Amps) x (Number of Loops).
Count loops on the inside of the aperture.
A. The jumper may be set in a range too low for current
being monitored (750/2000 series have a 3-position
switch rather than a jumper).
Move jumper to the correct range.
–
–
24 VDC
Power
+
+
Supply
Load
–
–
+
(Controller,
Meter, etc.)
4-20mA
Voltage Output
Transducer
Transducer
Troubleshooting
4-20 mA Models
1 1 . . S S e e n n s s o o r r h h a a s s n n o o o o u u t t p p u u t t
A.. Power supply is not properly sized.
Check power supply voltage and current rating.
B. Polarity is not properly matched.
Check and correct wiring polarity
C. Split Core models: The core contact area may be dirty.
Open the sensor and clean the contact area.
2 2 . . O O u u t t p p u u t t s s i i g g n n a a l l t t o o o o l l o o w w
A. The jumper may be set in a range too high for current
being monitored.
Move jumper to the correct range.
B. The load current is not sinusoidal (ACT only).
Select an ACTR transducer that works on distorted
wave forms.
C. Monitored current is below minimum required.
Loop the monitored wire through the aperture
several times until the "sensed" current rises
above minimum.
Sensed Amps = (Actual Amps) x (Number of Loops).
Count loops on the inside of the aperture.
3 3 . . S S e e n n s s o o r r i i s s a a l l w w a a y y s s a a t t 4 4 m m A A
A. Monitored load is not AC or is not on.
Check that the monitored load is AC and is
actually on.
4 4 . . O O u u t t p p u u t t s s i i g g n n a a l l i i s s a a l l w w a a y y s s a a t t 2 2 0 0 m m A A
A. The jumper may be set in a range too low for current
being monitored (750/2000 series have a 3-position
switch rather than a jumper).
Move jumper to the correct range.
Load
+
(Controller,
Meter, etc.)