84874130 Datasheet 84874130 | P1-P3

Temperature control relay for lift service rooms

according to EN81

35 mm HWT81 Part number 84874130

Control relay designed to monitor the temperature in lift machine rooms in accordance with standard EN81

PT100 input

Adjustable control between 5 °C and 40 °C

Independent setting of high and low thresholds

Built-in phase control option

Part numbers

Specifications

Type

Function

Nominal voltage (V)

3-phase control

84874130

HWT81

Under/Overtemperature window mode + phase sequence and failure

24→240VAC/DC

3x208→480VAC

Supply

Supply voltage Un

24V→240VAC/DC

Voltage supply tolerance

-15 %, + 10 % AC

-10 %, +10 %

Operating range

20,4V→264VAC

21,6V→264VDC

Polarity with DC voltage

AC supply voltage frequency

50 / 60 Hz

10 %

Power consumption at Un

3.5 VA in AC/0.6 W in DC

Immunity from micro power cuts

10 ms

Inputs and measuring circuit

Low temperature measurement selection

1 °C, 1 °C, 3 °C, 5 °C, 7 °C, 9 °C, 11 °C

High temperature measurement selection

34 °C, 36 °C, 38 °C, 40 °C, 42 °C, 44 °C, 46 °C

Temperature measurement input resistance

1330

Fixed hysteresis

2 °C

Display precision

2 %

Max. length of Pt100 probe cables

10 m

Timing

Delay on thresold crossing

1→10s

Display precision

0, + 10 %

Reset time

8 s

Delay on pick

-up

200 ms

Maximum response time on disappearance of fault

3.5 s for a temperature fault

500 ms for a phase fault

Output

Type of contacts

No cadmium

Maximum breaking voltage

250 V AC/DC

Max. breaking current

5 A AC/DC

Min. breaking current

10 mA / 5 V DC

Electrical life (number of operations)

1 x 10

Breaking capacity (resistive)

1250 VA AC

Maximum rate

360 operations/hour at full load

Operating categories acc. to IEC/EN 60947

-5-1

AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14

Mechanical life (operations)

30 x 10

Insulation

Insulation coordination (IEC/EN 60664

-1)

Overvoltage category III : degree of pollution 3

Rated impulse withstand voltage (IEC/EN 60664

-1)

4 kV (1,2 / 50

Dielectric strength (IEC/EN 60664

-1)

2 kV AC 50 Hz 1 min.

Insulation resistance (IEC/EN 60664

-1)

> 100 M

Ω

500 V DC

General characteristics

Display power supply

Green LED

Temperature indication

Yellow LED (HWT81)

"Phase" indication

Yellow LED (HWT81)

High threshold relay

Yellow LED (HT81, HT81

-2)

Low threshold relay

Yellow LED (HT81, HT81

-2)

Casing

35 mm

Mounting

On 35 mm symmetrical DIN rail, IEC/EN 60715

Mounting position

All positions

Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected

05/06/2014 www.crouzet.com

Accessories

Overview

Temperature control relays for lift machine rooms are designed for monitoring the temperature between 5 °C and 40 °C according to standard EN81.

Material : enclosure plastic type VO to UL94 standard

Incandescent wire test according to IEC 60695-2-

11 & NF EN 60695

-2-11

Protection (IEC/EN 60529)

Terminal block : IP 20

IP 30 casing

Weight

121 g

Connecting capacity IEC/EN 60947

-1

Rigid : 1 x 4

- 2 x 2.5

1 x 11 AWG - 2 x 14 AWG

Flexible with ferrules : 1 x 2.5

- 2 x 1.5

1 x 14 AWG - 2 x 16 AWG

Max. tightening torques

IEC/EN 60947

-1

0,6→1Nm/5,3→8,8Lbf.In

Operating temperature IEC/EN 60068

-2

20→+50°C

Storage temperature IEC/EN 60068

-2

40→+70°C

Humidity IEC/EN 60068

-2-30

2 x 24 hr cycle 95 % RH max. without condensation 55 °C

Vibrations according to IEC/EN60068

-2-6

10→150Hz,A=0.035mm

Shocks IEC/EN 60068

-2-6

5 g

Standards

Marking

CE (LVD) 73/23/EEC

EMC 89/336/EEC

Product standard

NF EN 60255

6 / IEC 60255

6 / UL 508 / CSA C22.2 N°14 / EN 81

-1

Electromagnetic compatibility

Immunity EN 61000

-6-

2/IEC 61000

-6-2

Emission EN 61000

-6-

4/EN 61000

-6-3

IEC 61000

-6-

4/IEC 61000

-6-3

Emission EN 55022 class B

Certifications

UL, CSA, GL

Conformity with environmental directives

RoHS, WEEE

Inputs and measuring circuit

Phase control voltage range

208V→480V(-15 % / +10 %) *

Phase failure detection with regeneration

> 30 % of the average of the 3 phases

Frequency of measured signal

50→60Hz

1 Hz

Relay drop

-out voltage (phase failure)

70 %

3-phase input resistors

600 K

Timing

Maximum response time in the event of a 3

-phase fault

(ms)

500 ms

Output

Type of output

2 single pole NO relay

Insulation

Galvanic isolation of power supply/measurement

Yes, between power supply and PT100 (transformer)

Yes, between power supply and output (transformer and relay)

Yes, between power supply and 3-phase network (transformer) Yes, between 3-phase network and output (relay)

No, between 3-phase network and PT100 (leakage current limited by several high-value resistors)

Yes, between PT 100 and output (relay)

Nominal insulation voltage

400 V

Comments

Description

Code

Removable sealable cover for 35 mm casing

84800001

Principles

Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected

05/06/2014 www.crouzet.com

HWT81 operating principle :

As long as the temperature controlled by the PT100 stays between the two preset thresholds on the front face, the temperature relay is closed.

When the temperature exceeds one of the preset thresholds on the front face (upper or lower threshold), the preset time delay on the front face (Tt) is activated. The yellow temperature LED (R1)

flashes. At the end of the time delay, if the temperature still exceeds the preset threshold, the output relay opens and the yellow LED is extinguished.

The output relay R1 closes instantaneously when the temperature returns within the window of the two preset thresholds on the front face plus or minus the fixed hysteresis.

The unit also monitors correct sequencing of phases L1, L2 and L3 of the 3-phase network and the total phase failure in the event of phase regeneration (<70 %).

After a time delay on pick-up (t) and as long as the presence and sequence of the phases are correct, relay R2 and the R2 "phase" LED are active. When a fault appears, the "phase" relay opens

and the R2 "phase" LED is extinguished instantly (response time from the appearance of a fault).

On disappearance of the fault, both relay R2 and the phase control LED are activated (response time from the disappearance of a fault). See "Phase failure and phase sequence" curve on page

If the PT100 probe is wired incorrectly (missing or short-circuited), output relay R1 opens and the yellow R1 LED flashes.

Legend

High threshold

Low threshold

Hysteresis

Monitored temperature

Threshold crossing delay adjustable on front face (Tt)

Dimensions (mm)

Connections

Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected

05/06/2014 www.crouzet.com

P1-P3 P4-P4

84874130

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Manufacturer:

Crouzet

Description:

Controllers HT81 24 240VAC/DC PT

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84874130