Chauvin Arnoux AEMC Simple Logger SL Series Service manual

Chauvin Arnoux® Inc.
15 Faraday Drive • Dover, NH 03820 USA • [phone] • Fax [phone] • www.aemc.com
Issue 19 “WATTS CURRENT” TECHNICAL BULLETIN Summer 2019
Phase Rotation
Meter Model 6610
Inside This Issue:
Featured Product:
Phase Rotation Meter
Model 6610
Recording Alarms on the
PowerPad III®Model 8336
New DataView®Installation
Introducing the Simple Logger®
(SL) Series
New AEMC Products:
Current Probe MiniFlex®Model MA114
AC Current Probes Models LM102 and LM103

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C
Featured Product:
Phase Rotation Meter Model 6610
orrect phase rotation in 3-phase AC electrical networks is critical for many applications,
such as motor control, radar and telecommunication systems, servo mechanisms, and
demodulators. Incorrect rotation can severely damage and even destroy equipment, creating
safety issues for facilities and personnel.
There are a variety of available products designed to test
phase rotation and identify potential problems. These
generally require attaching the instrument directly to live
conductors, which can be hazardous to operators unless all
safety measures are strictly followed.
To help address this issue, AEMC Instruments offers the
Phase Rotation Meter Model 6610. This instrument uses
static induction to identify rotation on 3-phase systems and
detect live and open/de-energized phases. This makes it
ideal for installing rotating machinery or motors, and for
checking generator phase rotation direction.
The Model 6610 features three color-coded voltage sensing detector clips that can connect to a
network by clipping onto the conductor’s insulation, without making direct contact with live
conductors.
Sidebar: Phase Rotation and
Pump Motors
A good example of the importance
of correct phase rotation involves
pump motors. These typically
incorporate curved blades for
moving liquid.
If a pump motor rotates backward,
it propels the liquid in the wrong
direction – potentially catastrophic
when pumping wastewater or other
dangerous liquids. In addition, if the
curved blades rotate in reverse,
they can hit the motor’s internal
housing and snap its drive shaft.
Traditionally, pump motor rotation is
verified by turning the motor on
briefly, a process known as
“bumping.” Although the motor only
runs for a short time, bumping still
causes some internal damage
every time it is performed.
The Model 6610 eliminates the
need for bumping. This may
significantly prolong the life of the
pump motor.

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Phase order is determined as soon as the leads are connected. LEDs and an audible buzzer
indicate the presence of live wires and phase sequence.
The Model 6610 is safety rated for 1000 V in CAT III and 600 V in CAT IV. Other features
include:
•Correct phase wiring verification
•Open or de-energized phase detection
•Operating voltage range from 75 to 1000 VAC
•Frequency range from 45 to 65 Hz
•Magnetic mounting system for easy attachment to the AC distribution panel under
measurement
•LED brightness control
•Low battery indicator
Quick note about safety:
Although the Model 6610 can detect voltage in a conductor, it is not designed specifically to
ensure personal safety. We recommend verifying the voltage detection feature using an
instrument with dedicated voltage detection, such as the AEMC Digital Multimeter Model
5212, before handling any conductors identified as de-energized.
Using the Model 6610 is very simple:
1. Start by pressing the red ON/OFF button. The instrument performs a quick self-check,
during which the LEDs on the front panel briefly light. After two seconds, all LEDs except
the battery indicator turn off.
2. Connect the leads to the network under test. Leads are color coded, to ensure correct
connection. The black clip is marked L1, the red clip L2, and the blue clip L3.

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The clip on each lead should be placed around the conductor’s insulation; direct contact
with the live conductor is unnecessary.
Position the clip on each conductor so that the point of the triangle mark on the jaw is
centered on the conductor. Note that the clip orientation has no effect.
3. After the three leads are connected, check the phase LEDs. Each LED should be lit,
indicating the conductor to which the associated lead is connected is live. If the LED fails
to light, this indicates the conductor is de-energized. This allows you to confirm the
presence or absence of voltage within the conductor.
Note that if the network to which you are connected is a Delta-
type hookup, the LED connected to the ground/earth phase
blinks.
4. When all three leads are connected, the instrument checks
phase rotation.
If rotation is present and in the expected clockwise direction – in
other words, the phase sequence is black, then red, then blue --
the green ABC LED lights and the audible alarm beeps
repeatedly.
If the detected rotation is in the opposite direction, the red
BAC LED lights and the alarm emits a continuous sound.
5. When the test is complete, disconnect the leads and turn off the
instrument.
This concludes our brief demonstration of the Model 6610. For more
information about this and all other AEMC products, please visit our
web site.

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I
Recording Alarms on the
PowerPad
®
III Model 8336
n the Spring 2019 issue of the Tech Bulletin , we discussed performing a transient search on the
PowerPad®III Model 8336. This instrument is a three-phase power quality analyzer that
enables technicians and engineers to perform diagnostics and power quality analysis on one-,
two- or three- phase networks.
An important feature of the Model 8336 is alarm mode. This enables you to capture
measurements that fall outside user-defined thresholds. Alarms can be used for applications
such as recording network blackouts with half-cycle resolution (VRMS, ARMS, URMS), determine
energy consumption overages, and monitor compliance with a power supply quality contract. Up
to 40 alarm settings capturing up to 16,000 separate alarm events s can be configured.
In this article, we explain the basic steps for setting up, running, and viewing an alarm search on
the instrument. This includes downloading alarms to a computer and viewing them in DataView®.
We assume the instrument is powered ON and connected to the distribution system under test.
We also assume DataView®with the PowerPad III Control Panel has been installed on your
computer. For instructions on how to perform these tasks, consult the instrument’s User Manual.

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Alarm Configuration and Scheduling
You can configure and schedule alarms either through the instrument’s front panel interface, or
through the DataView PowerPad III Control Panel. Both methods are described below.
Instrument Front Panel
1. Press the button.
•If there are no recordings stored in the instrument, the Detection Schedule screen
appears.
•If there are recordings in the instrument, the Detection List screen is displayed. In this
case, press the button to display the Detection Schedule screen.
2. Press the function button under the icon to display the Alarm Mode screen.
This defines the alarms used by the Alarm mode function.
Unassigned alarms are identified by a question mark.

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3. To edit an alarm field, highlight it using the up and down arrow buttons, then confirm the
selection by pressing .
4. To activate an alarm, highlight its number in
the left-most column and press . A red dot
indicates the alarm is active. The other fields
(left to right) are as follows:
•Type (42 types of alarms can be configured)
•Harmonic order (for alarms that include
harmonics data)
•Target (4L, 3L, N, Σ)
•Direction (> or <)
•Trigger threshold
•Trigger delay
•Hysteresis (see Sidebar)
The Alarm Mode screen consists of 8 pages,
each listing 5 alarms. Use the and
buttons to browse through the pages.
5. When you finish changing alarm settings, press
to return to the Detection Schedule screen
(see Step 1 above). This screen displays three
input fields:
•Start defines the time and date when the
recording starts.
•Stop specifies when the recording ends.
•Name allows you to name the test. This
can be 8 characters long.
6. Use the arrow and buttons to highlight,
select, and edit the Start, Stop, and Name
fields.
7. Press the button to write the settings to
the instrument.
8. If not enough memory is available, an error
message appears informing you of this.
Otherwise, the alarm detection session will begin at the scheduled start time and date. If a
session is scheduled but not yet started, the message DETECTION ON STANDBY
appears on the screen until the start time is reached, at which point the message changes
to DETECTION IN PROGRESS.
Sidebar: Hysteresis
On PowerPad III instruments,
hysteresis defines a “lag” in alarm
deactivation. To understand how this
works, consider a “
>
” alarm with no
hysteresis. The instant the trigger
threshold is exceeded the alarm
activates, and deactivates the instant
the measurement falls below the
threshold. In this situation, multiple
alarms may be recorded if the
measurement is very close to the
threshold – each time the measurement
fluctuates slightly above and below the
trigger, a separate alarm is reported.
This can result in multiple alarms being
detected for a single spike event.
Hysteresis filters out these alarms by
introducing a measurement lag into the
process. In our example, if we set
hysteresis to 5%, an alarm will remain
active until the measurement falls 5%
below the trigger threshold. This also
applies to
<
alarms: if the threshold is
passed, the alarm remains active until
the measurement exceeds the
threshold by the hysteresis percentage.
By adjusting hysteresis, we can control
the sensitivity of the alarm trigger. If
your recording session results in a high
number of alarms, you can set
hysteresis higher. If the recording
captures few alarms, you can lower the
setting to ensure actual fast, short-lived
events are not being missed.

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9. When the session is active, the icon blinks at the top of the screen, along with a status
bar showing the progress of the session. In addition, the (stop) button appears in
place of . The session will continue until the memory is full, you press , or until
the stop time/date is reached.
10.When the alarm detection session is finished, it appears in the Detection List screen. You
can now open the session and view its contents, as explained later in this article.
Alarm Configuration: DataView
For instructions about installing DataView, consult the instrument's user manual. Then proceed
as follows:
1. Turn ON the instrument and connect the instrument to the computer using the supplied
USB cable.
2. Start the PowerPad III Control Panel by opening the DataView folder on your desktop and
clicking the PowerPad III icon.
3. Click Instrument in the Control Panel menu bar and select the option Connect an
Instrument. Then complete the connection process (press F1 if you need assistance.)
4. With the instrument connected, click Instrument, then click Configure. This displays the
Configure Instrument dialog box.
5. Open the Alarm Conditions tab.

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This tab lets you configure up to 40 alarms. For each alarm you can set the following (not
all these fields apply to each type of alarm):
•Data to Capture is a drop-down list of all the choices of quantities (including None)
for which an alarm can be set. After you select a quantity, you can enable/disable its
alarm by selecting the check box that appears to the right of the measurement's
name.
•Phases specifies the phase to be monitored. Options are 3L, N, and 4L.
•< or > specifies whether the alarm activates when a quantity exceeds a defined
threshold, or activates when it falls below that threshold.
•Threshold defines the limit that activates the alarm.
•Duration sets the period the condition must exist before it is recorded as an alarm.
•Hysteresis selects the hysteresis percentage for the quantity. Options are 1%, 2%,
5% and 10%.
6. With configuration complete, you can now schedule the alarm session. To do this, click the
Schedule tab. This controls when different types of recording sessions in the instrument
start and stop, including alarms.

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7. At the top of this tab is a read-only field that displays the electrical hook-up, as defined in
the General tab of the Configure Instrument dialog box. The remaining fields on this tab
are as follows:
•Instrument Clock displays the current time of the instrument's system clock. You
can change this by clicking the Set button and completing the Date/Time dialog box.
•Record Now when checked starts a recording immediately when the configuration is
written to the instrument. When you select this option, the Duration field is displayed
to allow you to set the length of the alarm detection session. Options range from 30
minutes (default) up to 8 weeks. Selecting Record Now also automatically checks
the Use the same dates, times, and names for the recordings and searches and
Schedule Recording options.
•Use the same dates, times, and names for the recordings and searches specifies
that any selected recording sessions start and stop at the same date and time, and
also are stored under the same session name. If both this field and the Record Now
field are checked, all Starting Time and Ending Time fields on this tab are disabled;
all selected sessions will start and end in accordance with the specified duration. If
this field is checked and the Record Now field is not checked, the top row of
Starting Time, Ending Time, and Name fields is enabled; and the date/time/name
fields that individually apply to transients, inrush, and alarm searches are inactive
and grayed out. Session names can be up to eight alphanumeric characters long. If
this field is unchecked, you must enter an individual start and stop date/time and
session name for each selected recording.
•Schedule Recording, Schedule Transient Search, and Schedule Inrush Search
when checked enable you to schedule a recording session, transient search, and
inrush search respectively. Consult the PowerPad III Control Panel Help for
instructions on how to complete these fields.
•Schedule Alarm Search when checked schedules an alarm recording session,
using the settings configured in the Alarm Conditions tab of the Configure
Instrument dialog box.
8. When you are finished selecting settings, click OK. The recording will run immediately or at
the scheduled time, depending on the selected settings.