Amprobe Dmii PRO User Manual

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AMPROBE®

DMII™PRO

Data Logger Recorder

User ’s Manual

Amprobe thanks you for purchasing the DMII PRO. For your safety, please read
this instruction manual in its entirety.

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Part No. 995758
Rev.A

SAFETY PRECAUTIONS & WARNINGS

1.Read this manual in its entirety before proceeding.

2.This equipment should only be used by trained professionals who
are familiar with electrical hazards.

3.In many instances you will be working with dangerous levels of
voltage and/or current, therefore, it is important that you avoid direct
contact with any uninsulated current-carrying surfaces. Wear lineman
gloves, safety glasses and protective clothing at all times.

4.Before installing or removing batteries and/or fuses, disconnect all
inputs to the instrument and remove power cord from the outlet.

5.Before applying test leads to circuit under test, make certain that
leads are plugged into proper jacks.

6.Before using the DM-II PRO, always check condition of instrument
and accessories. Replace any damaged parts.

7.The unit should be checked on a known live line to verify it is
operating before using.

!

Page 2

R Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Phase Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5, 6, 7

CT Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Clock Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Language Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Communication Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Fund (Fundamental Frequency) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Meter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11, 12, 13, 14, 15

Record Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16, 17, 18, 19

Viewing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20, 21, 22, 23, 24, 25, 26

Symbols & Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Fuse Replacement/Voltage Protection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Total Power Quantities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Setting Voltage Selection Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32, 33

User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Helpful Hints in using this manual:
All button commands will be represented in a bold typeface.

For example - Press HOLD button

You will be able to walk your way through the commands by following the Steps indicated in each
section.

For example - Step 1, Step 2, etc.

Page 3

Congratulations! You have just purchased Amprobe’s DM-II (PRO) Data Logger Recorder. This
instrument was designed to assist you in your work. We have written this manual in a user
friendly, easy-to-follow format. Follow the steps and you will find it to be simple to use.

As you browse through the screens, you will find there are four sections. We will walk you
through them with ease. First, in order to begin, you must

Step 1 - TURN

THE DM-II ON

Push the ON/OFF button and hold it for a second. The green or red light will come on.

• Green indicates your instrument is powered by 110V.

• Red indicates your instrument is powered by batteries. Batteries are used as a
power back-up. If the power is interrupted, the DMII will continue recording using its
internal batteries.

The LCD screen will briefly display an information screen, then will finally switch to a SET-UP
screen.

Step 2 - ADJUST THE BRIGHTNESS OF YOUR LCD SCREEN

Since the LCD screen is sensitive to temperature, the brightness of your screen may
vary as the ambient temperature changes. If your screen is very dark

or completely

black, push the red ENTER button on your keypad and hold the key.

While holding ENTER button, push left ARROW button simultaneously and hold for a few
seconds.

If your screen is very light

, or BLANK push the red ENTER button and right ARROW button

simultaneously and hold for a few seconds.

R Introduction

Page 4

ENTER

In order to prepare your DM-II PRO for operation, follow the various steps indicated in the dia­grams that follow:

STEP 1 - Press SET-UP button (phase should be highlighted).
STEP 2 - Press ENTER
STEP 3 - Scroll through the 4 Phase screens. Before you press OK, check Drawings

A through D (on pages 6 - 7) for instructions for connecting test leads. Press OK after the test
leads are connected.

R Phase Set-up

Page 5

R Phase Set-up (cont’d.)

DRAWING A

3-Phase 4-Wire

(phase to neutral measurement)

DRA

WING B

3-Phase 3-Wire

(phase to phase measurement)

Page 6

NOTE: V2 and I4 inputs are NOT used.

NOTE: Use 3-Phase 3-Wire set-up (below) for phase voltage measurement on 3-phase 4-wire system.

R Phase Set-up (cont’d.)

DRAWING C

1-Phase 2-Wire

DRAWING D

1-Phase 3-Wire

Page 7

R CT Set-up

Check if the type of CT’s you are using matches the set-up on the DM-II PRO.

To set up the ACF-3000 itself, please refer to the ACF-3000 DM manual.

To change a CT set-up on the DM-II
Step 1

- Simply highlight CT in Setup screen using up/down arrows on the keypad and press
ENTER (red square).

Step 2

- Using same arrow keys, highlight desired CT.

Step 3

- Press ENTER again.

PROPER SET-UP

TYPE OF CURRENT TRANSDUCERS RANGE OF THE DM-II

DM-CT or Standard CTs 0-1000 amps CT DM-CT
DM-CT CE shipped with every DM-II PRO
ACF-3000DM Optional flexible CTs set-up 30-300 amps CT ACF3000 300

ACF-3000 DM Optional flexible CTs 300-3000 amps CT ACF3000 3000

Page 8

R Language Set-up

R Clock Set-up

To change a language:
Step 1

- In the SET-UP screen, using arrow keys select a lang and press ENTER

Step 2

- Select your desired language.

Step 3 - Press ENTER.

If you are satisfied with the choice of language on your screen, skip this section.

Page 9

Step 1

- Under SET-UP screen, using arrows on the keypad, select clock, then press ENTER.

Step 2

- If clock needs to be changed, using arrow keys, change time and date.

Step 3 - Once correct information has been obtained, press OK to return to SET-UP screen.

R Communication Set-up

You may skip this section. No set-up is required at this stage. The Communication Mode is used
only

when downloading data to a computer. Disregard the baud rate indicated on your screen, it will
be selected before you download to your PC. Please refer to the software section of your manual on
how to use this feature.

Page 10

R Fund (Fundamental

Frequency) Set-up

Step 1

- Select a FUND under SET-UP screen.

Step 2

- Using arrows on keypad, press ENTER to toggle between 50 or 60 Hz.

Step 3 - Once the user selects the fundamental frequency of the system, this frequency will

become the default setting.

Page 11

R Meter Mode

VERIFYING A

PROPER SET-UP OF THE DM-II PRO

IMPORTANT NOTE:
Always perform this check. it will only take you a minute to verify a correct set-up, but you may
lose weeks or months of work if the DM-II PRO was set-up improperly.

Step 1

- Push the METER button. Check the following:

• P (Real Power) on each of the phases should be positive. If it is negative, reverse the
direction of the CT to make the color dot and Amprobe logo face the opposite way.

• Check if voltage and amperage (current) ranges on each of the phases are within expected
values. For example if nominal voltage of the system is 480V, but you are reading only
270V something is apparently wrong. In this case double -check the set-up of the test leads
and the DM-II itself.

The meter mode allows you to view real time readings of voltage, current, power, power factor.
Step 2

- Begin meter mode by pressing METER button. For definitions of terms see Pages 16 & 17.
Depending on phase set-up, there are different screens for you to view data.

METER MODE SCREENS FOR DIFFERENT PHASE SET-UPS

Meter mode for 3

ø4W - Page 12

Meter mode for 3

ø3W - Page 13

Meter mode for 1ø2W - Page 14

Meter mode for 1

ø3W - Page 15

For details on how to scroll through the screens, refer to the drawing on Page 12.