pico Technology PicoLog CM3 User manual

Copyright © 2011 Pico Technology Ltd. All rights reserved.
PicoLog CM3
User's Guide
plcm3.en-2
Current Data Logger

IPicoLog CM3 Current Data Logger User's Guide
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
Contents
.....................................................................................................................................11 Introduction
...........................................................................................................................................1
1 Overview
...........................................................................................................................................2
2 Safety warnings
...........................................................................................................................................3
3 Standards compliance
...........................................................................................................................................3
4 Warranty
...........................................................................................................................................4
5 Legal information
...........................................................................................................................................5
6 Minimum PC requirements
.....................................................................................................................................62 Product information
...........................................................................................................................................6
1 Pack contents
...........................................................................................................................................6
2 Connections
...........................................................................................................................................8
3 Ethernet setup utility
...........................................................................................................................................9
4 Setting up
...........................................................................................................................................12
5 Specifications
..............................................................................................................................................13
Index

PicoLog CM3 Current Data Logger User's Guide 1
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
1 Introduction
1.1 Overview
The PicoLog CM3 is a three-channel, high-resolution current
data logger for monitoring current on up to three channels.
With high accuracy and low noise, the PicoLog CM3 is ideal
for recording data from three-phase supplies. The USB and
Ethernet interfaces allow the logger to be used as a USB-only
device, as a USB-powered device with Ethernet interface, or
as a Power-over-Ethernet (PoE) device. Using the Ethernet
interface, the PicoLog CM3 can be located anywhere on a
LAN or on the internet.
Programmer's Guide
All the software that you need for everyday use of the PicoLog CM3 is supplied with
the unit. For more advanced applications, you can write your own software.
Information on programming is published in a separate guide:
PicoLog CM3 Data Logger Programmer's Guide (plcm3pg.en.pdf)
Driver Installation
The driver was installed automatically when you installed PicoLog Recorder software.
Alternatively, you can download the driver from our website at http://www.picotech.
com.

Introduction2
Copyright © 2011 Pico Technology Ltd. All rights reserved.plcm3.en
1.2 Safety warnings
We strongly recommend that you read the general safety information
below before using your product for the first time. If the equipment is not
used in the manner specified then the protection provided may be
impaired. This could result in damage to your computer and injury to
yourself and others.
DO NOT exceed the maximum input range. The PicoLog CM3 is rated to measure
voltage up to 1 V RMS, while the supplied clamps have a range of 0 to 200 A. Any
signal in excess of these values may cause permanent damage to the unit and/or the
clamps.
DO NOT rely on the product to provide a protective safety earth. The unit does
not have a protective safety earth.
DO NOT attempt to repair the unit. The unit contains no user-serviceable parts.
Repair or calibration of the unit requires specialised test equipment and must be
performed by Pico Technology or its authorised distributors.
DO NOT attempt to feed current directly through the unit. You must use a
voltage-output current clamp.
DO NOT attempt to use a current transformer directly. You must use a voltage-
output current clamp.
DO NOT install a current clamp over any live, exposed conductors. You must
not make an electrical connection to the conductor, as doing so may be dangerous
and could cause damage to the equipment, your computer and may cause injuries to
yourself and others. The TA138 clamps supplied with the PicoLog CM3 are suitable for
work on uninsulated high-voltage cables. You MUST ensure that appropriate safety
precautions have been made in order to isolate the cable you wish to clamp before
fitting takes place. When using alternative current clamps, you should check their
suitability for this usage.

PicoLog CM3 Current Data Logger User's Guide 3
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
1.3 Standards compliance
This page details the standards to which the PicoLog CM3 and/or TA138 current clamp
currently meets.
FCC Classification
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his or her own
expense.
For safety and maintenance information see the safety warning.
IEC standard
The supplied TA138 clamps comply with the following standards: IEC1010-1 (1995)
Category II 600 V, and Category III 300 V.
CE standard
The PicoLog CM3 Data Logger meets the intent of the EMC directive 89/336/EEC
and has been tested to EN61326-1:2006 Class A Emissions and Immunity
standard.
The product also meets the intent of the Low Voltage Directive and has been
designed to meet the BS EN 61010-1:2010 Safety requirements for electrical
equipment for measurement, control, and laboratory use standard.
The supplied TA138 clamps comply with the following standards: EN61010-1 (2001)
Category II 600 V, and Category III 300 V.
1.4 Warranty
Pico Technology warrants upon delivery, and for a period of 5 years unless otherwise
stated from the date of delivery, that the Goods will be free from defects in material
and workmanship.
Pico Technology shall not be liable for a breach of the warranty if the defect has been
caused by fair wear and tear, willful damage, negligence, abnormal working conditions
or failure to follow Pico Technology's spoken or written advice on the storage,
installation, commissioning, use or maintenance of the Goods or (if no advice has
been given) good trade practice; or if the Customer alters or repairs such Goods
without the written consent of Pico Technology.

Introduction4
Copyright © 2011 Pico Technology Ltd. All rights reserved.plcm3.en
1.5 Legal information
The software supplied with this product is licensed, not sold. Pico Technology Limited
grants a licence to the person who installs this software, subject to the conditions
listed below.
Access. The licensee agrees to allow access to this software only to persons who
have been informed of these conditions and agree to abide by them.
Usage. The software in this release is for use only with Pico products or with data
collected using Pico products.
Copyright. Pico Technology Limited claims the copyright of, and retains the rights to,
all material (software, documents etc.) contained in this release. You may copy and
distribute the entire release in its original state, but must not copy individual items
within the release other than for backup purposes.
Liability. Pico Technology and its agents shall not be liable for any loss, damage or
injury, howsoever caused, related to the use of Pico Technology equipment or
software, unless excluded by statute.
Fitness for purpose. Because no two applications are the same, Pico Technology
cannot guarantee that its equipment or software is suitable for a given application. It
is your responsibility, therefore, to ensure that the product is suitable for your
application.
Mission-critical applications. This software is intended for use on a computer that
may be running other software products. For this reason, one of the conditions of the
licence is that it excludes usage in mission-critical applications; for example, life-
support systems.
Viruses. This software was continuously monitored for viruses during production, but
you are responsible for virus-checking the software once it is installed.
Support. If you are dissatisfied with the performance of this software, please contact
our technical support staff, who will try to fix the problem within a reasonable time. If
you are still dissatisfied, please return the product and software to your supplier
within 14 days of purchase for a full refund.
Upgrades. We provide upgrades, free of charge, from our web site at www.picotech.
com. We reserve the right to charge for updates or replacements sent out on physical
media.
Trademarks. Windows is a registered trademark of Microsoft Corporation in the USA
and other countries. Pico Technology Limited, and PicoLog are trademarks of Pico
Technology Limited registered in the United Kingdom and other countries.

PicoLog CM3 Current Data Logger User's Guide 5
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
1.6 Minimum PC requirements
To ensure that your PicoLog CM3 operates correctly, you must have a computer with
at least the minimum system requirements to run one of the supported operating
systems, as shown in the following table. The performance of the data logger will be
better with a more powerful PC.
Item
Specification
Operating
system
Windows XP SP2
Windows Vista
Windows 7
32 bit and 64* bit versions supported
Processor
As required
by Windows
Memory
Free disk
space
Ports
USB and optional Ethernet ports
* While the driver will run on a 64 bit operating system, the driver itself is 32 bit, and
therefore will run as 32 bit.

Product information6
Copyright © 2011 Pico Technology Ltd. All rights reserved.plcm3.en
2 Product information
2.1 Pack contents
Please check that your PicoLog CM3 pack contains the following items:
PP803
Quantity
Reorder code
Description
1
PR136
PicoLog CM3 Current Data Logger
3
TA138
AC current clamp
1
MI106
USB lead
1
TA076
Ethernet patch cable
1
DI025
Software and Reference CD
1
DO112
USB Installation Guide
PP815
Quantity
Reorder code
Description
1
PR136
PicoLog CM3 Current Data Logger
1
MI106
USB lead
1
TA076
Ethernet patch cable
1
DI025
Software and Reference CD
1
DO112
USB Installation Guide
2.2 Connections
Important:
Do not connect your PicoLog CM3 to the PC until
you have installed the software.
Diagrams
A: Signal and ground* connection sockets for current clamp 1
B: Signal and ground* connection sockets for current clamp 2
C: Signal and ground* connection sockets for current clamp 3
D: Ethernet port
E: USB port
F: Ethernet Data indicator - Flashes to indicate Ethernet data transfer.
G: Ethernet Link indicator - On when Ethernet port connected to an active device.
H: Power/Status indicator - On when power is applied. Flashes to indicate conversion
in progress.
*Ground is provided via electrical connection to the USB ground

PicoLog CM3 Current Data Logger User's Guide 7
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
USB connection
To use the PicoLog CM3 with its USB connection, connect
the USB port on the rear of the device to a USB port on
your computer using the cable provided.
The first time you connect the device, Windows will install
the driver and then tell you that the device is ready for
use. You can then run PicoLog Recorder software to start
making measurements.
Ethernet port connection
Before connecting to the PicoLog CM3's Ethernet
port, you must first configure the Ethernet settings.
LAN connection
To use the PicoLog CM3 on a local-area network (LAN),
connect it to your network switch or network router using
the Ethernet cable provided.
Direct connection
You can also connect the PicoLog CM3 directly to the
network port on your computer. For this connection, you
will need to use an Ethernet crossover cable (not
supplied).
Power over Ethernet (PoE)
The PicoLog CM3 can obtain its power from the Ethernet
port as a Powered Device (PD) according to the PoE
standard (802.3af). To use this feature, you must connect
the unit to Power Sourcing Equipment (PSE) such as a
network switch, router or power injector that also supports
the PoE standard. Any standard Ethernet cable up to
100 m (about 328 ft) in length can be used.
Current clamp connection
The PicoLog CM3 is compatible with Pico Technology
TA138 current clamps.
Each current clamp has both a red and a black 4 mm
connector, which plug directly into the red and black
connections on the front panel of the PicoLog CM3.
Once the current clamp(s) are connected, they are easily
fitted around a supply cable by use of the lever on edge of
the clamp.

Product information8
Copyright © 2011 Pico Technology Ltd. All rights reserved.plcm3.en
2.3 Ethernet setup utility
Setup utility
1. Connect the unit to your computer using the USB port.
2. Run the Ethernet Settings utility. There is a shortcut to this utility in the Pico
Technology program group under the Windows Start menu.
3. Set the Device Types control to "PicoLog CM3".
4. The serial number of your device should appear in the device list. Click the device
once to select it.
5. Set the Enable Ethernet Settings check box.
6. Enter the IP address and port that you wish to give the device. You may need to
ask your network manager for an IP address that does not conflict with existing
devices on the network.
7. Click Save.
8. You can now either continue to use the PicoLog CM3 as a USB device, or unplug
the USB cable and reconnect the device using its Ethernet port.
Power-saving tip
If you wish to stop using the PicoLog CM3 in Ethernet mode, you can use
the Ethernet Settings utility to disable its Ethernet port. This reduces the
power consumption of the device when used in USB mode.
Ethernet and USB
Do not use the PicoLog CM3 in USB mode when it is being powered by
Power-over-Ethernet (PoE). This could cause the unit to radiate
electromagnetic energy outside the limits permitted by FCC and EU
regulations, and could also cause it to produce spurious measurements. It
will not, however, cause permanent damage to the unit.

PicoLog CM3 Current Data Logger User's Guide 9
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
2.4 Setting up
Set up the PicoLog CM3 as follows:
1. From the File menu in the PicoLog Recorder software, select New settings.
The Recording dialog box appears:
2. Click OK. The Sampling Rate dialog box appears:
3. Click OK. The Converter details dialog box appears.
4. From the Converter type drop-down list, select either PLCM3 (USB) or PLCM3
(Ethernet). The dialog box will then show the converter list, as shown below:

Product information10
Copyright © 2011 Pico Technology Ltd. All rights reserved.plcm3.en
5. USB connection: Select the device with the correct type and serial number, and
click OK.
Ethernet connection: Any PicoLog CM3 devices visible to your computer on
your local network will appear in the list. Select the device with the correct type,
serial number and IP address, and click OK. If your device does not appear in the
list, type its IP address and port number in the boxes below the list.
When you click OK, the PicoLog CM3 channels window will appear:
6. In the PicoLog CM3 channels window, double-click on Ch1 unused. The Edit
PicoLog CM3 Channel dialog box appears:
7. Type in a name for the channel, if required.
8. Select the data type required i.e 1 mV/A, 10 mV/A , 100 mV/A, or Voltage.

PicoLog CM3 Current Data Logger User's Guide 11
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
9. Now click OK. Readings from the PicoLog CM3 will appear in the monitor window:

Product information12
Copyright © 2011 Pico Technology Ltd. All rights reserved.plcm3.en
2.5 Specifications
Range (voltage)
0 - 1 V AC RMS
Accuracy
(voltage)
1% <200 mV (RMS)
2.5% <1 V (RMS)
Range
(with supplied
current clamps)
(1 mV/A) 0.1 to 200 A AC RMS
Accuracy
(with supplied
current clamps)
(1 mV/A range) 0 to 200 A ±3%
RMS Noise
60 µ V
Resolution
24-bit
Conversion Time
Per Enabled
Channel
(approx.)
720 ms
Number of inputs
3
Connectors
4 mm Sockets
Input impedance
>1 M AC Coupled
Overvoltage
protection
±30 V DC
Output
USB or Ethernet
Power
Powered by USB or Ethernet:
USB: 5 V ±10% @ <100 mA
USB (Ethernet enabled): 5 V ±10% @ <200 mA
Ethernet: 48 V ±20% @ <40 mA (< 2 W)
Temperature
range
20°C to 28°C for stated accuracy
0°C to 50°C operating
-20 to +60°C storage
Humidity range
20% to 80% RH non-condensing, operating
5% to 95% RH non-condensing, storage
Dimensions
W 135 x L 184 x H 36 mm
(5.31 x 7.24 x 1.42 in.)
Software
PicoLog data logging software.
Drivers for Windows XP (SP2 or later)/Vista/Windows 7.
Examples for C/C++, Excel, LabVIEW.
Ethernet port
Conforms to IEEE 802.3 10Base-T.
Compatible with 10/100/1000Base-T networks.
Conforms to IEEE 802.3af Power-over-Ethernet (PoE).
USB port
Conforms to USB 2.0 Full-Speed (12 Mbps)

PicoLog CM3 Current Data Logger User's Guide 13
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en
Index
A
Access 4
Accuracy 12
C
Connection
Ethernet 8
LAN 8
USB 6
Connectors 12
Conversion time 12
Copyright 4
D
Dimensions 12
E
Environmental conditions 12
Ethernet
connection 8
F
Fitness for purpose 4
I
Inputs
impedance 12
number of 12
L
Legal information 4
Liability 4
Linearity 12
M
Mains voltages 2
Maximum input range 2
Mission-critical applications 4
N
Noise, RMS 12
O
Output 12
Overview 1
Overvoltage protection 12
P
Pack contents 6
PC requirements 5
Power-over-Ethernet (PoE) 8
R
Range 12
Repairs 2
Resolution 12
S
Safety
warning 3
Safety warnings 2
Sensor 12
Setting up 9
Software 12
Specifications 12
Support 4
T
Trademarks 4
U
Upgrades 4
Usage 4
USB 5
connection 6
V
Viruses 4
W
Warranty 3

PicoLog CM3 Current Data Logger User's Guide 15
Copyright © 2011 Pico Technology Ltd. All rights reserved. plcm3.en

Pico Technology
James House
Colmworth Business Park
ST. NEOTS
Cambridgeshire
PE19 8YP
United Kingdom
Tel: [phone]
Fax: [phone]
www.picotech.com
Copyright © 2011 Pico Technology Ltd. All rights reserved.
plcm3.en-2
28.06.11