Rockwell Automation 1405-M610 User Manual

Installation Instructions

Bulletin 1405 (M610) Operating Instructions

Overview

The MiniPowermonitor (1405-M610) measures and displays voltage and current parameters of low voltage AC power systems:

• Line-to-neutral and line-to-line voltages

• Instantaneous currents

• 15-minute averaged currents

• Peak currents

L-L

L1-L2

L2-L3

L1-L3

L-N

15min

max

The MiniPowermonitor is a compact unit, with a 96 x 96 mm (3.78 x

3.78 in) front panel and a depth of only 65 mm (2.56 in).

The module’s display is arranged in 3 lines, each with 4 digits. The red 14 mm (0.55 in) high LED characters are easily readable from a distance, in high ambient light conditions, and from acute viewing angles. The measurement mode is indicated by 5 LED lamps that show which parameter is displayed at that time.

Phase voltage and current measurements are made by sequential scanning at 2 samples per second, so that 3 phase measurements are made in 1.5 seconds. The updated average current value is displayed approximately every 60 seconds, interjected into the cyclical sequence of displayed parameters. Parameter values can be read out of sequence, using the function (F) key on the front panel.

1 Publication 1405-IN001B-EN-P - October 2003

2 Bulletin 1405 (M610) Operating Instructions

Installation

Only qualified personnel should install and wire this equipment. Refer to the following safety guidelines prior to installation.

ATTENTION

Only qualified personnel, following accepted safety procedures, should install and wire the MiniPowermonitor. Before beginning any work, disconnect all sources of power and verify that they are de-energized and locked out. Failure to follow these instructions may result in personal injury or death, property damage or economic loss.

Never open a current transformer (CT) secondary circuit with primary current applied. Wiring between the CTs and the MiniPowermonitor should include a shorting terminal block in the CT secondary circuit. Shorting the secondary with primary current present allows other connections to be removed if needed. An open CT secondary with primary current applied produces a hazardous voltage, which can lead to personal injury, death, property damage or economic loss.

1. Install your MiniPowermonitor within a suitable enclosure. Make sure the enclosure provides adequate clearance for ventilation and wiring of the module. dimensions and spacing guidelines for the MiniPowermonitor.

2. Determine your wiring mode and install wiring between the MiniPowermonitor and your power system. Connections on page 3 for more information.

3. Configure the current transformer (CT) ratios to match those used in your power system connections. Transformer Ratio Setting and Display Test on page 4 for more information.

Refer to Dimensions on page 6 for

Refer to Input

Refer to Current

Grounding

MiniPowermonitors do not need to be grounded because of the isolated enclosures. Follow all local requirements for grounding of PT and CT secondaries.

Publication 1405-IN001B-EN-P - October 2003

Bulletin 1405 (M610) Operating Instructions 3

Input Connections

Input connections are at the rear, through a single 12-way plug-in terminal block with spring clamps. The terminal block can accept wire

I2+

I2-

Shorting terminal block

(Wye connection optional)

Gnd

(if req'd)

I3-

I3+

sizes from 28 to 14 AWG (0.08 to 2.5 mm

L1 L2 L3

I1-

I1+

M610

The module uses industry-standard current transformers with a 5A secondary for line current measurement.

• Internal shunt resistance for 5A current transformers: 0.01 ohm.

Aux Supply: With this option, instrument power is supplied by a separate 120V or 240V line, independent of the measured power lines. A second connector block (2-pin, spring-clamp terminals type) is added at the rear with this option.

TIP

Terminals 2 and 4 (counting from left to right) are not used. No connections should be made to these terminals.

A unit with the 120V supply option is not designed to operate on 240V or any other voltage. Likewise, a unit with the 240V supply option is not designed to operate on 120V or any other voltage. Units designed for 400V and 480V operation do not have an auxiliary supply connection and receive power from the measurement line. Ensure that each unit is properly supplied with a power source that matches the voltage designation of your unit.

Publication 1405-IN001B-EN-P - October 2003

4 Bulletin 1405 (M610) Operating Instructions

L 1

L1 - L2

L 2

L1 - L3

L 3

L2 - L3

L 1

L1 - L2

L 2

L1 - L3

L 3

L2 - L3

Current Transformer Ratio Setting and Display Test

To select one of the pre-programmed standard current transformer

L- L

ratios, start with the module switched-off. Press and hold the function “F” key while switching on the power, and for about 3 additional

L- N

seconds.

All segments of the LED displays and all the LED lamps light up one after the other in rapid sequence to confirm the integrity of the

min

displays.

Max

Press the function “F” key again to initiate the current transformer ratio setting routine. When it is pressed once, the value “1” is

L- L

displayed on the third line of the display. This is the first in the series of industry-standard current ratio values that are pre-programmed in

L- N

the 1405-M610. It is indicated as the nominal value of the line current (I

nominal

min

Pressing the function “F” key repeatedly steps the displayed value through each successive standard current transformer ratios. The

Max

transformer ratio is I transformer secondary rating.

values of I

nominal

:1 or I

nominal

:5, depending on the current

You may select from the following

(1)

1 / 2

/ 5 / 10 / 15 / 20 / 25 / 30 / 40 / 50 / 60 / 75 / 80 / 100 / 125 / 150 / 200 / 250 / 300 / 400 / 500 / 600 / 750 / 800 / 1000 / 1200 / 1250 / 1500 / 1600 / 1800 / 2000 / 2500 / 3000 / 4000.

Publication 1405-IN001B-EN-P - October 2003

(1)

The actual value is 2.5A

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