Sontay Re-3p-12 User manual

Tel: +44 (0)1732 861200 - E-mail: [email protected]om - Web: www.sontay.com

Page 1 of 4

RE-3P-12_18

3-Phase Din-Rail Mount 12 & 18kW

Issue Number: 7.1

Date of Issue: 28/04/2020

Four Elms Road Edenbridge

Kent TN8 6AB UK

Features & Benefits

Selectable control input

Over temperature protection with auto reset

LED Indication

Efficient electronic switching

No additional heat sinks or RFI filters required

Technical Overview

The 12 & 18kW 3-phase DIN Rail mounting controllers are suitable for providing control of electric heating loads from an analogue signal. Applications

include electric heating coils, heating cables and electric furnaces.

The units utilise solid-state switching with “zero crossing technology” to provide accurate switching control. All items are provided with an alarm output for

over temperature protection and LED Indication of Output ON, and are designed to mount on DIN rail.

Specification

Input signal Selectable

0-10V, 0-5V, 2-10V or 4-20mA

Power supply 24Vac/dc ±10%

Supply (load) 380-440ac 50/60Hz

Max. load per phase:

12kW 16A

18kW 25A

Dissipated heat:

12kW 23W

18kW 35W

Terminal connections Rising cage

Over temperature:

Trip in temp. @ 90°C

Trip out temp. @ 85°C

LED indication ON when output is on

Alarm output (as power supply) 0V when over temp

alarm is active

Ambient temperature 0-45°C without de-rating *

Dimensions (W, H, D) 170 x 110 x 102mm

Conformity CE Marked

Country of origin UK

* Units are rated at 45°C. If using at higher ambient temp, de-rate the

units by 10% for every 5°C above 45°C

The products referred to in this data sheet meet the requirements of EU

2014/30/EU and 2014/35/EU

Product Codes

RE-3P-12 12kW, 3-phase 16A (per phase), Din-rail Mount

Heating Regulator

RE-3P-18 18kW, 3-phase 25A (per phase), Din-rail Mount

Heating Regulator

WEEE Directive:

At the end of the products useful life please dispose

as per the local regulations.

Do not dispose of with normal household waste.

Do not burn.

Tel: +44 (0)1732 861200 - E-mail: [email protected]om - Web: www.sontay.com

Page 2 of 4

RE-3P-12_18

3-Phase Din-Rail Mount 12 & 18kW

Issue Number: 7.1

Date of Issue: 28/04/2020

Four Elms Road Edenbridge

Kent TN8 6AB UK

SAFETY REQUIRMENTS & ADVICE SHEET

Introduction

The objective of this leaflet is to provide information to ensure that the safety of the person(s) installing or maintaining the equipment is not compromised

and its location and method of installation does not endanger others, either during or after installation. Customers should be aware of the Health and

Safety at Work Act 1974 (HSW 1974) and the EC “Provision and Use of Work Equipment Regulations 1992” (PUWER). Both are available from the Health

and Safety Executive (HSE) publications, within the UK.

Installation

CE Directives

These are European regulations which apply to our industry. They affect the equipment emissions and immunity to Radio Frequency Interference (RFI) and

various elements of safety for electrical equipment.

The European Community ‘CE’ Directives that mainly concern Sontay Ltd are the Low Voltage Directive (LVD) and the Electromagnetic Compliance

Directive (EMC).

A Declaration of Conformity may be supplied with the product or supplied on request.

Torque Settings

Good working practises must be adhered to ensuring appropriate electrical and mechanical installation. This would include the mechanical fixing of

potentiometer bushes and electrical set screw and/or pillar connections. These Electrical Connections and Mechanical Fastenings must not be over

tightened. We would recommend a typical torque setting of 1 to 5Nm. For specific product information, see appropriate product data sheet, where

applicable.

Cooling Requirements

The use of an additional heatsink (this could be a conductive panel) suitably attached or mounted with the unit, will help to dissipate heat away from the

device(s). An alternative or additional method would be forced air-cooling (using a fan), to assist the natural convection of airflow over an existing

heatsink within the unit. The product fins should be mounted in line with the forced and/or natural airflow.

The equipment’s environment and its initial ambient temperature also need to be considered, as this could have an adverse effect on the overall operating

conditions.

Fusing

We recommend that semiconductor, fast acting to BS88 IEC 269, type fuses or circuit breakers (Semiconductor - MCB) should be used for unit and/or

device protection. The appropriate maximum load current should be known to select the required fuse or MCB, but must not exceed the equipment

rating. The I² t (A² s) rating of the selected fuse must be less than that of the equipment so as to protect the equipment’s discrete device. Further

appropriate fusing may be required for protection of the unit supply using standard fuse links and holders. Failure to address these requirements and the

use of incorrectly selected fuses may cause the equipment to fail.

Earthing

The protective conductor terminal of the equipment must be utilised at all times and bonded to a ‘good’ Earth (ground). The earth bonding (strapping)

leads of any combined equipment should be as short as possible and be substantial, i.e. at least rated higher than the equipment’s load. For further

information, refer to BS7671. Following these simple guidelines will ensure optimum use of any appropriate filter circuits which may be required.

Insulation (over-voltage category) and Protection from electric shock Classification of Equipment

All equipment, unless otherwise stated, is rated to CLASS II Insulation (Over-voltage category) and CLASS I (Protection category).

Maintenance

Before any servicing is carried out, reference should be made to appropriate installation instructions, drawings and labelling which may come with the

equipment. Personnel should switch off the unit supply before accessing or removing any safety cover and be aware of hazardous live parts.

Safety Interlocks for Sontay RE Electric Heater Battery Controllers

Sontay Ltd. recommends that the installation and maintenance of all RE electric heater battery controllers should be done with reference to BS

7671:2008+A3:2015 (Requirements for Electrical Installations. IET Wiring Regulations).

All users of the IET Wiring Regulations should be aware of changes in Amendment No. 3 to the 17th Edition. Amendment No. 3 came into effect on 1 July

2015.

For international installations, please refer to local regulations for guidance.

Tel: +44 (0)1732 861200 - E-mail: [email protected]om - Web: www.sontay.com

Page 3 of 4

RE-3P-12_18

3-Phase Din-Rail Mount 12 & 18kW

Issue Number: 7.1

Date of Issue: 28/04/2020

Four Elms Road Edenbridge

Kent TN8 6AB UK

SAFETY REQUIRMENTS & ADVICE SHEET (continued)

Adherence to BS 7671, Chapter 42 (Protection Against Thermal Effects), and in particular;

420.3 –General Requirements,

421 –Protection Against Fire Caused by Electrical Equipment

o421.1

o412.2

422 –Precautions Where Particular Risks of Fire Exist

o422.1.2

o422.1.3

should be undertaken, and as a minimum, a mains isolation switch, a load-breaker switch and a contact breaker should be installed in the electric heater

battery controller supply. The supply to the contactor coil should be interrupted by an over-temperature (hi-limit) thermostat located in the heater battery

and also upon detection of airflow loss (fan proving), via an air flow switch, air DP switch across the fan or fan current switch in the fan supply.

Additionally, EN 61508-1:2010 (Functional safety of electrical/electronic/ programmable electronic safety-related systems. General requirements)

stipulates the general requirements for electrical, electronic and programmable electronic safety devices, and covers the safety systems of electrical

equipment and their components that could have an impact on the safety of people and the environment if they fail. BS EN 61508-1 also applies to

protection and control systems, and helps organisations to identify hazards to improve overall equipment safety in the workplace.

Failure to incorporate these safety interlocks may result in the invalidation of fire insurance, building and contents insurance, and in extreme cases may

result in the disconnection of the electrical supply by the distributor.

Operation, Installation & Configuration

The RE-3P has been designed to control electric heating loads in proportion to the incoming, selectable analogue signal. Control of the load is facilitated by

the use of solid-state semiconductor devices and feature zero crossing point switching of the AC load which virtually eliminates RFI problems.

Caution

In normal operation the heat sink surface can exceed 90°C. Dangerous voltages exist on the PCB and particular care should be taken. RE-3P must be

installed in accordance with the relevant statutory regulations and installation must be carried out by an experienced and fully qualified engineer.

Ventilation

The RE-3P is suitable for use up to a maximum ambient temperature of 45°C which should not be exceeded. If necessary, enclosures or control panels

should be ventilated with a cooling fan, particularly if the unit is being used to run at full power to provide forced cool air movement over the heat sink.

Over Temperature Monitoring

The RE-3P is provided with an electronic thermal cut-out fitted to the heat sink to protect against over temperature. The unit will switch off the load if the

heat sink temperature exceeds 95°C and will automatically reconnect the load once the heat sink temperature has dropped below 85°C. Upon switching,

the alarm output from the control PCB will change from 24V to 0V.

The heat sink temperature will not reach 95°C under normal operating conditions. However, this might occur if the ambient temperature exceeds 45°C.

The RE-3P is suitable mounting on DIN Rail and must be installed with the heat sink cooling fins orientated vertically. There should be a minimum of

100mm vertically between units.

Electrical Installation

Installation must be carried out by a suitably trained electrician, and in accordance with the relevant statutory regulations.

Load Supply and Back-up Protection

High speed fuses or miniature circuit breakers should be utilised to provide back-up protection to the switching devices. It is recommended that a load

disconnect switch and a contactor are installed in the load supply. The supply to the contactor coil should be interrupted by an over-temperature

thermostat located in the heater battery and also upon detection of airflow loss.

Tel: +44 (0)1732 861200 - E-mail: [email protected]om - Web: www.sontay.com

Page 4 of 4

RE-3P-12_18

3-Phase Din-Rail Mount 12 & 18kW

Issue Number: 7.1

Date of Issue: 28/04/2020

Four Elms Road Edenbridge

Kent TN8 6AB UK

Whilst every effort has been made to ensure the accuracy of this specification, Sontay cannot accept responsibility for damage, injury, loss or expense

from errors or omissions. In the interest of technical improvement, this specification may be altered without notice.

Operation, Installation & Configuration (continued)

Control Supply

The unit is supplied as standard with the requirement for a 24Vac/dc auxiliary power supply. The external power supply common is linked to the 0-10V

Input Signal common. Screened cable should be used for connections to BMS Controllers, where possible the cable screen should be connected to a

functional earth and at one end only to avoid earth loops.

Cycle Time

The unit is supplied with the cycle time set to minimum (fully anticlockwise). An on board potentiometer is provided to facilitate adjustment of the cycle

time in the range of 5 (default) to 60 seconds. Adjustment is not normally required, incorrect adjustment can cause an overload condition.

Maximum Heating Load

The power rating of the units are given as a guide. The maximum current (which is dependent on the actual supply voltage and heating load) must not be

exceeded.

Jumper Settings & Connections

Voltage inputs: Current inputs: