M-system LTCE User manual

Brand: M-system

Model: LTCE

Type: User manual

M-system LTCE

The M-system LTCE is an AC current transducer that converts alternating current from a current transformer into a standard process signal. It features true RMS sensing and a high-density mounting design, making it suitable for various applications such as:

Centralized monitoring and control of motors, pumps, or heaters by DCS
Monitoring power line and power supply current

With its wide input range (0-120% of rating), overload capacity (4000% of rating for 1 second), and accuracy of ±0.5%, the LTCE provides reliable and precise current measurements. It also offers a variety of output options, including DC current (4-20 mA, 0-20 mA), DC voltage (0-12 V DC), and AC voltage (1-5 V).

M-system LTCE

Centralized monitoring and control of motors, pumps, or heaters by DCS
Monitoring power line and power supply current

MODEL: LTCE

Power Transducer Series LT-UNIT

AC CURRENT TRANSDUCER

Functions & Features

• Converts alternating current from a current transformer

into a standard process signal

• Minimum ripple

• True RMS sensing

• Isolation up to 2000 V AC

• High-density mounting

• Conforms to IEC 60688

• CE marking

Typical Applications

• Centralized monitoring and control of motors, pumps or

heaters by DCS

• Monitoring power line and power supply current

(1.54)

143 (5.63)

111

(4.37)

mm (inch)

MODEL: LTCE–[1][2]–[3][4]

ORDERING INFORMATION

• Code number: LTCE–[1][2]-[3][4]

Specify a code from below for each [1] through [4].

(e.g. LTCE-5A-K3/T)

• Special output range (For codes Z & 0)

[1] INPUT

Current

1: 0 – 1 A AC

2: 0 – 2 A AC

5: 0 – 5 A AC

[2] OUTPUT

Current

A: 4 – 20 mA DC (Load resistance 500 Ω max.)

D: 0 – 20 mA DC(Load resistance 500 Ω max.)

F: 0 – 10 mA DC (Load resistance 1000 Ω max.)

G: 0 – 1 mA DC (Load resistance 10 kΩ max.)

J: 0 – 5 mA DC (Load resistance 2000 Ω max.)

Z: Specify current (See OUTPUT SPECIFICATIONS)

Voltage

1: 0 – 10 mV DC (Load resistance 10 kΩ min.)

2: 0 – 100 mV DC (Load resistance 100 kΩ min.)

3: 0 – 1 V DC (Load resistance 1000 Ω min.)

4: 0 – 10 V DC (Load resistance 10 kΩ min.)

5: 0 – 5 V DC (Load resistance 5000 Ω min.)

6: 1 – 5 V DC (Load resistance 5000 Ω min.)

0: Specify voltage (See OUTPUT SPECIFICATIONS)

[3] AUXILIARY POWER SUPPLY

AC Power

K3: 100 – 120V AC

(Operational voltage range 85 - 132 V AC, 47 - 66 Hz)

L3: 200 – 240V AC

(Operational voltage range 170 - 264 V AC, 47 - 66 Hz)

DC Power

R: 24 V DC

(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

V: 48 V DC

(Operational voltage range 48 V ± 10 % , ripple 10 % p-p max.)

P: 110 V DC

(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

(CE not available)

[4] OPTIONS

Terminal cover

blank: Without

/T: With

GENERAL SPECIFICATIONS

Connection: M4 screw terminals (torque 1.2 N·m)

Screw terminal: Chrome-plated steel

Housing material: Flame-resistant resin (black)

Isolation: Input to output to power

Input waveform: Up to 15 % of 3rd harmonic content

Overrange output: 0 to 120 % at 1 – 5 V

Zero adjustment: -5 to +5 % (front)

Span adjustment: 95 to 105 % (front)

INPUT SPECIFICATIONS

Frequency: 50 or 60 Hz

Operational range: 0 – 120 % of rating

Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4

sec.,

120 % continuous

Input burden:

0.1 VA (input 0 – 1 A)

0.2 VA (input 0 – 2 A)

Rugghölzli 2

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Fax +41 (0)56 222 10 12

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MODEL: LTCE

0.5 VA (input 0 – 5 A)

CURRENT [%]

2000 4000

TIME [s]

• Overload Capacity

OUTPUT SPECIFICATIONS

• DC Current: 0 – 20 mA DC

Minimum span: 1 mA

Offset: Max. 1.5 times span

Load resistance: Output drive 10 V max.

• DC Voltage: 0 – 12 V DC

Minimum span: 5 mV

Offset: Max. 1.5 times span

Load resistance: Output drive 1 mA max.; at ≥ 0.5 V

OUT

10V

■ OPERATION DIAGRAM (example)

2.5 5A

OUT

20mA

2.5 5A

INSTALLATION

Power Consumption

•AC Power input: Approx. 2 VA

•DC Power input: Approx. 1.7 W (15 mA at 110 V)

Operating temperature: -10 to +55°C (14 to 131°F)

Operating humidity: 30 to 85 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 400 g (0.88 lbs)

PERFORMANCE in percentage of span

Accuracy: ±0.5 % (at 23°C ±10°C or 73.4°F ±18°F,

45 – 65 Hz)

Magnetic field (ext. origin) effect: ± 0.5 % (400 A/m)

Response time: ≤ 1 sec. (0 – 100 % ±1 %)

Ripple: 0.5 %p-p max.

Line voltage effect: ±0.25 % over voltage range

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 2000 V AC @1 minute

(input to output to power to ground)

Impulse withstand voltage: 1.2 / 50 μsec., ±5 kV

(input to output or ground)

STANDARDS & APPROVALS

CE conformity:

EMC Directive (2004/108/EC)

EMI EN 61000-6-4

EMS EN 61000-6-2

Low Voltage Directive (2006/95/EC)

EN 61010-1

Measurement Category II (input, output)

Installation Category II (power)

Pollution Degree 2

Input to output or power: Reinforced insulation (550 V)

Output to power: Reinforced insulation (300 V)

IEC Standard: IEC 60688

Rugghölzli 2

CH - 5453 Busslingen

Tel. +41 (0)56 222 38 18

Fax +41 (0)56 222 10 12

[email protected]

www.sentronic.com

Produkte, Support und Service

SEN

TRONIC

MODEL: LTCE

CONNECTION DIAGRAM

–

OUTPUT

LOAD

SOURCE

U(+)

V(–)

POWER

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

6 7

1 2 3

[4 (.16)]143 (5.63)

DIN RAIL

35mm wide

8 (.31)

27 (1.06)

39 (1.54)

• When mounting, no extra space is needed between units.

98 (3.86)

80 (3.15)

111 (4.37)

2–M4 MTG HOLE

7–M4 SCREW

10 (.39)

(.12)

TERMINAL COVER (option /T)

Specifications are subject to change without notice.

Rugghölzli 2

CH - 5453 Busslingen

Tel. +41 (0)56 222 38 18

Fax +41 (0)56 222 10 12

[email protected]

www.sentronic.com

Produkte, Support und Service

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TRONIC

LTCE

P. 1 / 2EM-3351 Rev.5

AC CURRENT TRANSDUCER

MODEL

LTCE

INSTRUCTION MANUAL

BEFORE USE ....

Thank you for choosing M-System. Before use, please check

contents of the package you received as outlined below.

If you have any problems or questions with the product,

please contact M-System’s Sales Ofﬁce or representatives.

■ PACKAGE INCLUDES:

Signal conditioner ......................................................... (1)

■ MODEL NO.

Conﬁrm Model No. marking on the product to be exactly

what you ordered.

■ INSTRUCTION MANUAL

This manual describes necessary points of caution when

you use this product, including installation, connection and

basic maintenance procedures.

POINTS OF CAUTION

■ CONFORMITY WITH EC DIRECTIVES

• This equipment is suitable for use in Pollution Degree

2 environment and in Installation Category II, with the

maximum operating voltage 550V for input to output or

power, and 300V for output to power.

Prior to

installation, check that the insulation class of this

unit satisﬁes the system requirements.

• Altitude up to 2000 meters

•

The equipment must be mounted inside a panel.

• Insert noise ﬁlters for the power source, input and output

connected to the unit. COSEL Model NAC-04-472, TDK

Model ZCAT 3035-1330 or equivalent is recommended.

•

The

equipment must be installed such that appropriate

clearance and creepage distances are maintained to con-

form to CE requirements. Failure to observe these re-

quirements may invalidate the CE conformance.

■ POWER INPUT RATING & OPERATIONAL RANGE

•

Locate

the power input rating marked on the product and

conﬁrm its operational range as indicated below:

100 – 120V AC rating: 85 – 132V, 47 – 66 Hz, approx. 2VA

200 – 240V AC rating: 170 – 264V, 47 – 66 Hz, approx. 2VA

24V, 48V DC rating: Rating ±10%, approx. 1.7W

110V DC rating: 85 – 150V, approx. 1.7W

■ GENERAL PRECAUTIONS

• Before

you remove or mount the unit, turn off the power

supply and input signal for safety.

■ ENVIRONMENT

• Indoor use

•

When heavy dust or metal particles are present in the air,

install the unit inside proper housing with sufﬁcient ven-

tilation.

• Do

not install the unit where it is subjected to continuous

vibration. Do not subject the unit to physical impact.

• Environmental

temperature must be within -10 to +55°C

(14 to 131°F) with relative humidity within 30 to 85% RH

in order to ensure adequate life span and operation.

■ WIRING

• Do not install cables (power supply, input and output)

close to noise sources (relay drive cable, high frequency

line, etc.).

• Do

not bind these cables together with those in which

noises are present. Do not install them in the same duct.

■ AND ....

• The

unit is designed to function as soon as power is sup-

plied, however, a warm up for 10 minutes is required for

satisfying complete performance described in the data

sheet.

COMPONENT IDENTIFICATION

INSTALLATION

■ DIN RAIL MOUNTING

Set the unit so that its DIN rail adaptor is at the bottom.

Position the upper hook at the rear side of the unit on the

DIN rail and push in the lower. When removing the unit,

push down the DIN rail adaptor utilizing a minus screw-

driver and pull.

■ WALL MOUNTING

Refer to “EXTERNAL DIMENSIONS.”

Body

Connection

Diagram

Zero Adjustment

Span Adjustment

Specifications

DIN Rail

35mm wide

Spring Loaded

DIN Rail Adaptor

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Produkte, Support und Service

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LTCE

TERMINAL CONNECTIONS

Connect the unit as in the diagram below or refer to the con-

nection diagram on the side of the unit.

CHECKING

1) Terminal wiring: Check that all cables are correctly con-

nected according to the connection diagram.

2) Power

input voltage: Check voltage across the terminal

6 – 7 with a multimeter.

3) Input: Chec

k that the input signal is within 0 – 100% of

full-scale.

4) Output:

Check that the load resistance meets the de-

scribed speciﬁcations.

ADJUSTMENT PROCEDURE

This unit is calibrated at the factory to meet the ordered

speciﬁcations, therefore you usually do not need any cali-

bration.

For matching the signal to a receiving instrument or in case

of regular calibration, adjust the output as explained in the

following.

■ HOW TO CALIBRATE THE OUTPUT SIGNAL

Use a signal source and measuring instruments of sufﬁcient

accuracy level. Turn the power supply on and warm up for

more than 10 minutes.

ZERO:

Apply 0% input and adjust output to 0%.

2) SPAN: Apply 100% input and adjust output to 100%.

3) Check ZERO adjustment again with 0% input.

4) When ZERO value is changed, repeat the above proce-

dure 1) – 3).

MAINTENANCE

Regular calibration procedure is explained below:

■ CALIBRATION

Warm up the unit for at least 10 minutes. Apply 0%, 25%,

50%, 75% and 100% input signal. Check that the output

signal for the respective input signal remains within accu-

racy described in the data sheet. When the output is out of

tolerance, recalibrate the unit according to the “ADJUST-

MENT PROCEDURE” explained earlier.

EXTERNAL DIMENSIONS unit: mm (inch)

–

OUTPUT

LOAD

SOURCE

U(+)

V(–)

POWER

6 7

1 2 3

[4 (.16)]143 (5.63)

DIN RAIL

35mm wide

8 (.31)

27 (1.06)

39 (1.54)

• When mounting, no extra space is needed between units.

98 (3.86)

80 (3.15)

111 (4.37)

2–M4 MTG HOLE

7–M4 SCREW

10 (.39)

(.12)

TERMINAL COVER (option /T)

Rugghölzli 2

CH - 5453 Busslingen

Tel. +41 (0)56 222 38 18

Fax +41 (0)56 222 10 12

[email protected]

www.sentronic.com

Produkte, Support und Service

SEN

TRONIC

M-system LTCE User manual

Brand: M-system

Model: LTCE

Type: User manual

M-system LTCE

Centralized monitoring and control of motors, pumps, or heaters by DCS
Monitoring power line and power supply current

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M-system LTCE User manual

M-system LTCE User manual

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