Basler-electric BE3-74TD User Manual download pdf (Page 1)

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+1 618.654.2341 (USA)

info@basler.com

Model

BE3-74TD, BE3-74TH,

and BE3-74TL

INTRODUCTION

BE3 milliamp sensing alarm relays monitor analog signals

from transducers that measure current, voltage, watts, hertz,

vars, or power factor. These transducers are used to

indicate the status of a system or component. BE3-74T

relays operate when the adjustable trip point is reached. An

adjustable time delay is provided to avoid nuisance tripping

due to transient changes in sensed current. All BE3 milliamp

sensing alarm relays have a POWER LED to indicate the

condition of the power supply. BE3-74TL and BE3-74TH

relays have a RELAY LED to indicate the trip output status.

The BE3-74TD relay has an OVER LED to indicate

overcurrent trip and an UNDER LED to indicate an

undercurrent trip.

SPECIFICATIONS

Operating Power

All units require external operating power.

Nominal Voltage: 120 Vac, 240 Vac, 380 Vac, 480

Vac, or 24 Vdc

Frequency: 45 to 65 Hz

Burden

Vac: 2 VA

Vdc: <3 W

Sensing Input

Nominal Current: 0 to 1 mA, 4 to 20 mA, or 0 to

20 mA (specify nominal range)

Burden: 10 kΩ/V

Overload: 2 times nominal continuously or

10 times nominal for 3 s

Setpoint

Overcurrent Range: Adjustable 40 to 120% (±3%) of

nominal

Undercurrent Range: Adjustable 0 to 80% (±3%) of

nominal

Time Delay: Adjustable 0 to 10 s

Repeatability: Greater than 0.5% of full span

Differential: Fixed at 5% of nominal

Operating Time: 200 ms typical

Output

Relay Type: D.P.D.T.

AC Rating: 250 V, 5 A, non-resistive,

1200 VA

DC Rating: 125 V, 1 A, resistive, 120 W

Mechanical Life: 5 million operations

Temperature

Operating Temperature: 0°C (32°F) to 60°C (140°F)

Functional Temperature: –25°C (–13°F) to 70°C (158°F)

Storage Temperature: –40°C (–40°F) to 70°C (158°F)

Temperature Coefficient: 0.03% per °C (300 ppm/°C)

Humidity

Relative Humidity: 95% non-condensing

Physical

Mounting: DIN rail 1.38” by 0.29” (35 mm by

7.5 mm)

Case: Complies with IEC 529, DIN

40050, BS 5490

Case Material: Complies with UL 94VO

Weight

Single Function: 0.88 lb (0.4 kg)

Multiple Function: 1.32 lb (0.6 kg)

Size

Single Function: 2.17” wide (55 mm)

Multiple Function: 3.93” wide (100 mm)

Agency

cULus listed to UL 508 and CSA C22.2 No. 14

CE compliant

GOST-R certified per the relevant standards of Gosstandart

of Russia

OPERATION

BE3-74TH and BE3-74TL relays have two user-adjustable

controls marked SET and DELAY. The BE3-74TD relay has

four controls: UNDER SET, UNDER DELAY, OVER SET,

and OVER DELAY. The SET control adjusts the relay trip

point. An overcurrent trip causes the relay output to energize

when the current rises above the SET threshold. The

overcurrent SET level is adjustable from 40 to 120% (±3%)

of nominal input (I

nom

). An undercurrent trip causes the relay

output to de-energize when the current decreases below the

SET threshold. The undercurrent SET level is adjustable

from 0 to 80% (±3%) of I

nom

. The DELAY control adjusts the

time from when a fault is detected until the output contacts

change state. The DELAY control is adjustable from 0 to 10

seconds (200 ms typical operating time).

Setting Example

A BE3-74TD with a nominal input type of M (4 to 20 mA) has

the following settings:

• UNDER SET - 50%

• UNDER DELAY - 5 s

• OVER SET - 100%

• OVER DELAY - 5 s

An undercurrent condition is detected when the sensed

current decreases to 10 mA. The UNDER output de-

energizes 5 seconds after the undercurrent condition is

detected. An overcurrent condition is detected when the

sensed current increases to 20 mA. The OVER output

energizes 5 seconds after the overcurrent condition is

detected.

INSTALLATION

BE3 dc milliamp sensing alarm relays are designed for

mounting on standard DIN rails that comply to DIN-EN

50022. Mounting involves hooking the top edge of the cutout

on the base of the case over one edge of the DIN rail. The

opposite side of the cutout containing the release clip is then

pushed over the opposite side of the DIN rail. To remove or

reposition the relay, lever the release clip and move the

relay as required. BE3 relays should be installed in a dry,

Publication

9321100990

Revision

Instructions

Date

04/14

2014

1 2

Instructions 1

Summary of Contents

Page 1 - Instructions

www.basler.com +1 618.654.2341 (USA) [email protected] Model BE3-74TD, BE3-74TH, and BE3-74TL INTRODUCTION BE3 milliamp sensing alarm rel

Page 2

vibration-free location where the ambient temperature does not exceed the operating temperature range. Connections to the relay should be made using w

Related models: BE3-74TH | BE3-74TL |

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Basler-electric BE3-74TD User Manual Page 1

Browse online or download User Manual for Relay Basler-electric BE3-74TD. Basler Electric BE3-74TD User Manual

Summary of Contents

Related models: BE3-74TH | BE3-74TL |

Comments to this Manuals

Basler-electric BE3-74TD User Manual Page 1

Browse online or download User Manual for Relay Basler-electric BE3-74TD. Basler Electric BE3-74TD User Manual

Summary of Contents

Related models: BE3-74TH | BE3-74TL |

Comments to this Manuals

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