Onset EG4100 Series User manual

EG4xxx Owner’s Manual

Version 1.0

Onset Computer Corp

470 MacArthur Blvd

Bourne, MA 02532

www.onsetcomp.com

800-564-4377

loggerhelp@onsetcomp.com

April 18, 2018

EG4xxx Owner’s Manual 2 INSTALLATION

1 Introduction

Thank you and congratulations to your purchase of an Onset EG4xxx device!

Properly installed, the device will be able to record and report energy usage and

production for years to come.

The ﬁrst and second section of this manual describes installation and commis-

sioning of the product. The third section provides operating instructions and is

followed by a section on equipment maintenance. The appendices provide the

device speciﬁcations and a reference to troubleshooting information.

2 Installation

Installation must be performed by a licensed electrician according to all applicable

local, national, and international codes.

CAUTION: The EG4xxx power connector carries high voltage. For safety,

the device must be installed in a suitably rated enclosure for the installation en-

vironment. The enclosure must have a screw-on or locking cover that prevents

accidental touch of the power connector.

2.1 What’s included in the box

•1×EG4xxx device

•1×AC Power plug (5-position plug)

•1×DC Power plug (2-position plug)

•0–30×Current transformers (CTs) w/ 8ft wires & plug (as ordered)

•1×HomePlug AV wall-outlet adapter w/5ft Ethernet cable (if ordered)

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2 INSTALLATION EG4xxx Owner’s Manual

2.2 Materials required for installation

•Per phase: Use of proper smallest available breakers or rated fuse taps for

the install per local NEC rules. Usually 15A circuit breaker or single multi-

pole breaker depending on phases used.

•Black, red, and white stranded AWG 12 wire; length depending on instal-

lation location. Thermal resistance to at least 75◦C. Blue wire is needed in

addition for 3-phase installations. Use wire that has insulation rating greater

than the max voltage inside the panel. Note: wire colors may vary based on

country and electrical service.

•Electrical tape

•Conduit and couplings as needed

•Mounting and wire organization hardware as needed

•If installed outside, appropriately rated enclosure (e.g. IPX4/NEMA4)

2.3 Tools required for installation

•#0 slotted screw driver (needed if length of CT-wires needs to be adjusted)

•Circuit-breaker ﬁnder (if using HomePlug power-line communication)

•Voltage meter

Additionally, for device commissioning and installation veriﬁcation:

•Clamp-on AC current meter

•Laptop with Ethernet cable

2.4 Nomenclature and Symbols

In the US, residences typically receive power through split-phase power distribu-

tion which is provided through two hot legs, a neutral, and a protective ground.

Most commercial and industrial buildings receive power through 3-phase power

distribution provided through 3 hot phases, a neutral and protective ground.

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EG4xxx Owner’s Manual 2 INSTALLATION

Throughout the rest of this document, we use the term “phase” to refer both to the

phases of 3-phase power distribution as well as the two legs used in split-phase

power distribution.

The following table describes the symbols used on the device:

Symbol: Description:

Caution, risk of danger.

2.4.1 Measurement Category

Measurement Category III is for measurements performed in the building installa-

tion. Examples are measurements on distribution boards, circuit-breakers, wiring,

including cables, bus-bars, junction boxes, switches, socket-outlets in the ﬁxed

installation, and equipment for industrial use and some other equipment, for ex-

ample, stationary motors with permanent connection to the ﬁxed installation.

2.5 Safety Warnings

Please follow the installation instructions in this manual for wiring diagram and

proper selection of CTs.

To reduce the risk of electric shock:

•Do not connect device to a circuit operating at >277 Vrms to neutral.

•Always open or disconnect circuits from Power Distribution System of

building before installing or servicing the unit or attached current trans-

formers.

2.6 Installation Location

The EG4xxx is usually installed near the power-distribution panel of a building,

where there is easy access to the power circuits to be measured.

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2 INSTALLATION EG4xxx Owner’s Manual

The EG4xxx is permanently connected equipment. A 15A circuit-breaker shall be

included (one per phase) in close proximity of the device and within easy reach

of the operator. The breakers shall be marked as the disconnecting device for

EG4xxx. The breakers shall be wired to the device in compliance with the NFPA 8

National Electrical Code using a conductor size of at least AWG12 and tightened

to 10 ft·lb.

The EG4xxx is a listed device and must be installed inside a suitable enclosure.

The enclosure the EG4xxx is installed in must be rated according to the environ-

ment it is used in. For example, outdoor installations require an outdoor-rated

enclosure (e.g., IPX4/NEMA4).

Select an installation location that is not exposed to direct sunlight or the elements.

Otherwise, the warranty may be voided.

Do not install the device in a way that would make it difﬁcult to operate the dis-

connecting device (circuit breakers).

2.7 Device Overview

Figure 1: EG4xxx inputs and outputs

As shown in Figure 1, the EG4xxx has three input connectors: the AC Mains is a

5-pin connector used to wire the device to the building supply. The DC Connector

is a 2-pin connector for monitoring or powering from a DC voltage. The CT

Connector is used to connect current transformers (CTs) or other sensors. The

LCD and multi-switch provide some user interface.

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EG4xxx Owner’s Manual 2 INSTALLATION

The unit also has an Ethernet port (RJ45 connector) which can be used to hard-

wire the device to a Local Area Network (LAN). It also has two USB ports (Type-

A Female) to interface to various other IT devices.

An LCD shows a basic user interface with readouts from the set variable registers.

It may be controlled through the multi-switch for basic control and conﬁguration.

2.7.1 LCD

The LCD is an installation aid shown in Figure 2. When powered on, the LCD

will show a logo as the device boots. During this time the backlight will ﬂicker

showing boot activity. Once the LCD shows the ﬁrst register screen, the device is

automatically recording data if conﬁgured to do so.

Figure 2: EG4xxx LCD

2.7.2 AC Mains Connector

This connector is shown in Figure 3 and the pin-out is as follows:

April 18, 2018 6

2 INSTALLATION EG4xxx Owner’s Manual

Figure 3: AC Mains Connector

Pin: Name: Description:

1L1 Wire to phase 1 of building supply.

2NWire to building’s Neutral.

3L2 Wire to phase 2 of building supply for split- and three-phase

installs.

4 Unused. Leave unconnected.

5L3 Wire to phase 3 of building supply for three-phase installs.

The AC Mains Connector is CAT III rated (for measurements performed in the

building installation, such as circuit breakers). Pin L1 serves three purposes: it

powers the device (2W typical, 12W maximum), the voltage on the line is mea-

sured to calculate power used/generated on phase L1, and it carries the power-

line signal for communicating with the HomePlug AV wall-plug adapter. The pin

must be wired to the building’s power supply with a voltage in the range from 85–

277Vrms (to neutral). In contrast, pins L2 and L3 are used purely as voltage-taps

so power used/generated on phases L2 and L3 can be calculated. Wiring these pins

is necessary only if there are CTs measuring current(s) on L2/L3. The voltage on

these lines can be 0–277Vrms (Vac or Vdc).

To measure any signal on the AC Mains Connector L1 and N must be powered

with at least 85Vrms. If no voltage is supplied to this port, then the unit will

not measure any signal from L1, L2, or L3. The unit can continue to operate if

2.7.3 DC Connector

This connector is shown in Figure 4 and the pin-out is as follows:

7 April 18, 2018

EG4xxx Owner’s Manual 2 INSTALLATION

Figure 4: DC Connector

Pin: Name: Description:

1+Wire to DC signal.

2-Wire to ground.

The DC Connector CAT III rated for use from -60 – 60Vdc. It can measure the

voltage across that full range but if powered by the DC port, there must be at

least 9Vdc. If an installation utilizes both the AC Mains Connector as well as

DC Connector, and DC power is used to power the unit, there must be more than

12Vdc to ensure unit pulls power from the DC port.

2.7.4 CT Connector

This connector is shown in Figure 5. It provides 15 or 30 positions for the CT

plugs illustrated in Figure 9. The silk-screened numbers indicate which CT should

be connected to which pair of pins. Pins that are to receive the black wire of the

CTs are marked with a circle with black interior, pins for the white wires are

marked with a circle with white interior.

Figure 5: CT Connector

April 18, 2018 8

2 INSTALLATION EG4xxx Owner’s Manual

The CT Connector is rated for wiring one to thirty units of the CTs listed in Sec-

tion B.6. The input voltage rating is 0.333Vrms at the rated current.

NOTE: There is no risk of damage if a CT plug is accidentally inserted such

that it straddles the pins for two different CTs. If this happens, the EG4xxx will

not be able to measure power properly but otherwise there are no ill effects. To

correct the problem, simply remove and re-insert the plug at the right position.

2.7.5 Ethernet (LAN) and USB Connector

This connector is shown in Figure 6. It provides hard-wired Ethernet connectivity

via an RJ45 plug and two USB host ports via Type-A Female plugs.

Figure 6: Ethernet Connector

The green LED in the top-left corner of the connector turns on (green) when an

Ethernet cable is plugged in and a valid Ethernet carrier signal has been detected.

The LED goes dark brieﬂy whenever data is being exchanged over the cable. The

yellow LED in the top-right corner of the connectors is a speed indicator. It turns

on (yellow) operating at 100Mbps and is off (dark) when operating at 10Mbps.

9 April 18, 2018

EG4xxx Owner’s Manual 2 INSTALLATION

The USB ports are USB2.0 compatible and can supply up to 1A at 5V. They may

be used with various supported IT devices such as RS485-to-USB converters or

WiFi adapters.

2.7.6 Multi-switch

Figure 7 is a close-up of the multi-switch. The user can slide the switch Left or

Right for navigation and push the switch into the unit to select.

Figure 7: Multi-Switch

The multi-switch can be used to navigate the LCD menu system. By default, any

action seen from the multi-switch will wake the backlight to ensure a viewable

interface.

2.7.7 Time Reference

During normal operation, the EG4xxx maintains accurate time by synchronizing

with an NTP server, such as one of the public servers available at ntp.org. Since

NTP provides atomic-clock accuracy, there is usually no need to set the time man-

ually.

When the NTP server is not accessible, either temporarily (e.g., after a power fail-

ure) or permanently (e.g., at a remote site), the EG4xxx relies on a Super Capacitor

backed real-time clock to maintain proper time.

The backup is designed only to cover relatively short power outages. The Super

Capacitor takes about 5 minutes to fully charge, and will keep correct time for

approximately 8 hours without power.

When power is restored after such an event, the EG4xxx will attempt to restore

proper time via the NTP server. If unavailable, and the Super Capacitor is de-

pleted, the device will fall back to using the time that was in effect when the last

April 18, 2018 10

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