Raychem EMDR-10 Manual de usuario

EMDR-10

Control unit

Regelgerät

Régulateur

ENGLISH

Supplied Items

Control Unit

Air Temperature Sensor

Moisture Sensor

Fixing Brackets (Hard-46)

Label

Manual

DEUTSCH

Lieferumfang

Regelgerät

Temperatursensor

Feuchtesensor

Abstandshalter (Hard-46)

Aufkleber

Montage- und Bedienungsanleitung

FRANÇAIS

Contenu du conditionnement

Régulateur

Sonde de température ambiante

Sonde d’humidité

Supports (Hard-46)

Etiquette

Manuel

ENGLISH

Table of Contents

Supplied Items .......................................................................................... 2

1. Description ........................................................................................... 5

1.1 Intended Purpose ........................................................................... 5

1.2 Technical Data................................................................................ 5

1.3 Care and Maintenance.................................................................... 6

2. Installation ............................................................................................ 6

2.1 Safety Remarks .............................................................................. 6

2.2 Installation and Dimensions of the Control Unit............................... 6

2.3 Installation and Dimensions of the Temperature Sensor ................. 7

2.4 Installation and Dimensions of the Moisture Sensor........................ 7

2.5 Electrical Layout ............................................................................. 8

3. Function................................................................................................ 8

3.1 Display Elements ............................................................................ 8

3.2 Parameter Adjustments................................................................... 9

3.3 Moisture Sensor Fuse..................................................................... 9

4. Fault Messages and Trouble Shooting................................................ 10

5. Connection Diagrams.......................................................................... 11

5.1 EMDR-10 with directly connected Heating Cable.......................... 11

5.2 EMDR-10 with Contactor .............................................................. 12

5.3 Alarm Output................................................................................. 12

DEUTSCH

Inhaltsverzeichnis

Lieferumfang............................................................................................. 2

1. Beschreibung...................................................................................... 13

1.1 Einsatzzweck................................................................................ 13

1.2 Technische Daten......................................................................... 13

1.3 Pflege und Wartung ...................................................................... 14

2. Installationsanleitung........................................................................... 14

2.1 Sicherheitshinweise ...................................................................... 14

2.2 Montage und Abmessungen des Regelgerätes ............................ 14

2.3 Montage und Abmessungen des Temperatursensors................... 15

2.4 Montage und Abmessungen des Feuchtesensors ........................ 15

2.5 Elektrische Auslegung .................................................................. 16

3. Funktion .............................................................................................. 16

3.1 Anzeigeelemente .......................................................................... 16

3.2 Parametereinstellungen ................................................................ 17

3.3 Feuchtesensorsicherung............................................................... 17

4. Störmeldungen und Fehlersuche ........................................................ 18

5. Anschlussbilder................................................................................... 19

5.1 Anschlussbild EMDR-10 Dachrinnenband

direkt angeschlossen ................................................................... 19

5.2 Anschlussbild EMDR-10 mit Leistungsschütz ............................... 20

5.3 Anschlussbild Alarmausgang........................................................ 20

EMDR-10

FRANÇAIS

Table des Matières

Contenu du conditionnement .................................................................... 2

1. Description ......................................................................................... 21

1.1 Domaine d’application .................................................................. 21

1.2 Caractéristiques techniques.......................................................... 21

1.3 Entretien ....................................................................................... 22

2. Installation .......................................................................................... 22

2.1 Sécurité ........................................................................................ 22

2.2 Installation et dimensions du régulateur........................................ 22

2.3 Installation et dimensions de la sonde de température ................. 23

2.4 Installation et dimensions de la sonde d’humidité ......................... 23

2.5 Protection électrique..................................................................... 24

3. Fonctionnement.................................................................................. 24

3.1 Affichage....................................................................................... 24

3.2 Paramétrage ................................................................................. 25

3.3 Fusible de la sonde d’humidité ..................................................... 25

4. Messages d’erreur et dépannage ....................................................... 26

5. Schémas de câblage .......................................................................... 27

5.1 EMDR-10 avec connexion directe du ruban chauffant ................. 27

5.2 EMDR-10 avec contacteur............................................................ 28

5.3 Sortie d’alarme.............................................................................. 28

1. Description

1.1 Intended Purpose

The electronic control unit EMDR-10 is specifically designed for the control of gutter heating

systems. Depending on outdoor temperature and moisture in the gutter the heating cable will

only be switched on if necessary to ensure a correct drain of the snow water.

1.2 Technical Data

Control Unit

Supply voltage 230 VAC, ±10%, 50Hz

Power consumption max. 4 VA

Max. Switching capacity Imax 10(4)A / 230 VAC, SPST,potential 230 VAC

Temperature –3°C to +6°C (factory setting +2°C)

adjustment range

Lower limit temperature test –25°C to –5°C (factory setting adjustment range –15°C)

Operating differential ±0.5 K

Measuring accuracy ±1.5 K

Moisture adjustment range 1 (max. sensitivity) to 10 (min. sensitivity) (factory setting 5)

Post heating time 0 to 60 minutes (factory setting 60 minutes)

adjustment range

Alarm relay Imax 2(1)A / 230 VAC, SPDT, potential-free

Moisture sensor (output) Imax 1A / 230 VAC, SPST potential

230 VAC with fuse 5 x 20mm T1A

according to IEC127-2/V

Mounting DIN rail according to DIN EN 50022-35

Low voltage directive EN 60730

EMC EN 50081-1 (emission) and

EN 50082-1 (immunity)

Terminals 2.5 mm2(stranded conductors), 4 mm2(solid conductors)

Protection class II (panel mounted)

Housing

Ambient temperature range* 0°C to +50°C

Ingress protection IP20

Housing material Noryl (self-extinguishing according to UL 94 V-0)

Weight approx. 350 g

Dimensions 106 x 90 x 58 mm

* Continuous operation must be assured and the device must be protected from the penetration

of moisture.

Ambient temperature sensor

Sensor type VIA-DU-10

Ingress protection IP54

Terminals 2.5 mm2

Sensor cable 2 x 1.5 mm2, max. 100 m (not included)

Exposure temperature –30°C to +80°C

Mounting Wall mounting

Moisture sensor (HARD-45)

Sensor type PTC

Power consumption 9 W to 18 W

Ambient temperature range –30°C to +65°C continuous

Supply voltage 230 VAC, ±10%, 50Hz

Connection cable 3 x 1.5 mm2, 4 m, the connection

cable can be extended to max. 100 m at 3 x 1.5 mm2

AC 230V 50/60Hz

IP 20

Relais: 10(4)A, AC 230V

Alarm: 2(1)A, AC 230V

Do not open while energized

Nicht unter Spannung öffnen

Ne pas ouvrir sous tension

EMDR-10

T2A IEC127–2/V

PE PE PE 1 2 3 4 5 6 7 8 9 1011

°C

–25

–20 –15

–10

–5

TEST

°C

–3

–2

–101234

20 30 40

min

345678

106

1.3 Care and Maintenance

To clean the EMDR-10 only use a soft and dry cloth.

The use of solvents or other liquids may lead to serious damage of the unit.

The function of the control unit and the heating cable can be checked in the test mode

(see item 3.2 parameter adjustments).

2. Installation

Only for electricians!

Attention: Mistakes during connecting up the device can cause damage to the control unit. The

company is not liable for any damage caused by faulty connections and/or incorrect handling.

2.1 Safety Remarks

– Before working on the device, switch off the power supply!

– The device may only be connected up and serviced by authorized, trained personnel!

– Electrical connection has to be carried out according to the enclosed connection diagram.

– The device is only designed to be connected to fixed cables.

– The wires of the moisture sensor are carrying mains voltage, the ones of the temperature

sensor as well as the alarm contact have to be considered as carrying mains voltage

according to VDE.

The relevant installation regulations must be observed.

– Do not lay sensor cables together with other live wires in order to avoid disturbances.

– Moreover, you must ensure adequate protection against disconnection of all leads in compli-

ance with the requirements of EN 60730, part 1. This can be achieved for example by fixing

the cables with cable clips.

– Local standards for electrical connection must be observed.

– If the device does ot work please first check all connections and the mains power supply.

2.2 Installation and Dimensions of the Control Unit

The device is designed for mounting on DIN rail (DIN EN 50022-35) in switchboxes and distribu-

tion boxes. The circuit breaker and an eventually necessary contactor can be mounted directly

beside the unit.

Dimensions:

2.3 Installation and Dimensions of the Temperature Sensor

A good positioning of the temperature sensor is crucial for the correct and efficient operation

of the snow melting system. The temperature sensor should be placed on the North side of the

building, in a position where it will always be away from direct sunlight. Moreover, it must be

protected against other influences, i.e. it may not be mounted above doors or windows and not

close to lamps or floodlights.

A position on the wall just below a gutter is recommended.

The connection wire of the sensor may be extended to max. 100 m at a lead diameter of 1.5 mm

The wires of the temperature sensor has to be considered as carrying mains voltage according

to VDE. The relevant installation regulations must be observed. Connection diagram see item 5.

Dimensions:

52 40

2.4 Installation and Dimensions of the Moisture Sensor

A good positioning of the moisture sensor is crucial for the correct and efficient operation of the

snow melting system.

The moisture sensor and heating cable(s) served / controlled by the same control unit should be

positioned in the same roof area. The moisture sensor is usually placed in a gutter at the lowest

position in the system adjacent to one of the drainpipes. This is usually where water / snow is

last cleared from the gutter, hence ensuring that the whole protected area is cleared before the

heating system turns off. The exact positioning will depend on the particular building and the

prevailing weather conditions. If experience shows that the system shuts down before snow is

removed from a key area, then the sensor should be moved to that area.

For mounting the sensor in the gutter use the fixing brackets (Hard-46) to fix the sensor adjacent

and parallel to the heating cable. Ensure that the sensor remains flat and is not in contact with

the heating cable.

The connection wire of the moisture sensor may be extended to max. 100 m at a lead diameter

of 3 x 1.5 mm2. Connection diagram see item 5.

The wires of the moisture sensor are carrying mains voltage!

Dimensions:

Ø 9,5

12 x 6

active sensor length

500

650

4 m

2.5 Electrical Layout

- The length of the heating cable determines number and size of the fuse.

- The use of a FI safety switch (30 mA) is obligatory stipulated by Raychem!

- Local standards for electrical connection must be observed.

- The device may only be connected up by an authorized electrician.

- Use C-characteristic circuit breaker!

Maximum heating cable length for –10°C start-up temperature at 230 VAC

Heating cable GM-2X / 8BTV-2-CT

6 A (directly connected) 25 m

10 A (directly connected) 40 m

13 A (with contactor) 50 m

16 A (with contactor) 60 m

20 A (with contactor) 80 m

3. Function

The control unit has four LEDs for indication of the operating conditions and four dials for the

adjustment of different parameters.

The air temperature is measured by means of a temperature sensor. When the air temperature

falls below the value adjusted at the control unit, then the corresponding yellow LED will light up

and after approx. 10 minutes the moisture sensor is activated.

If moisture is present at the sensor then the corresponding yellow LED will light up, the heating

is switched on, and the red LED will light up. The heating cable remains on until

– the air temperature rises above the set value

– the moisture falls below the set value

– the air temperature falls below the adjusted lower temperature limit

and the set post-heating period has elapsed.

3.1 Display Elements

The LEDs indicate following operating conditions:

LED green

Device in operation (mains voltage)

LED yellow

Adjusted air temperature threshold fallen below

LED flashes in case of fault at the air temperature sensor (break or short circuit)

LED yellow

Adjusted moisture threshold exceeded

LED flashes in case of fault at the moisture sensor (break)

LED red

Heating cable energized

3.2 Parameter Adjustments

The following parameters can be set by means of the respective dial:

Adjustment of the air temperature threshold.

The moisture sensor is being put into operation below this value.

Adjustment of the moisture threshold.

Above this value the heating cable is being energized, if the air temperature is below

the setpoint.

1 = max. sensitivity, 10 = min. sensitivity

Adjustment of the lower temperature limit.

Below this value the heating cable will be switched off. At the same time the mois-

ture measurement will be switched off.

In addition this dial can be used to test the unit by turning the potentiometer shaft

to the left stop. After that the heating cable (resp. contactor) will be energized for

max. 10 minutes. If the shaft is turned to the right again during these 10 minutes

then the TEST will be stoped and the unit works in normal operation mode with the

adjusted lower temperature limit.

If the potentiometer is left in the TEST position then the unit will automatically

return to normal operation mode after the test period of 10 minutes and works with

a lower temperature limit of –25°C

This lower temperature limit can be set to a different value at any time.

A new test period can be activated by turning the shaft from the left stop to the right

(minimum to –20°C) and then back again to the left stop.

Adjustment of the post-heating period.

The correct adjustment of the post-heating period is dependent on the local weather

conditions, the location, and the requested heating power.

The conditions have to match with the requirements for an economical operation.

Minimum time over which the heating cable stays activated when the conditions of

temperature and humidity are no longer met e.g. temperature increases above set

level or moisture is lower than set level.

Use the following table as a guide:

Description Suggested setting

Air temperature threshold +2°C

Moisture threshold 5

Lower temperature limit –15°C

Post-heating period 60 minutes

Periodic inspection: It is recommended to inspect and test the control unit as well as the heating

cable circuits annually.

3.3 Moisture Sensor Fuse

The control unit is equipped with a fuse in the output for the moisture sensor which protects

this output against overload and short circuit. In case this fuse has to be replaced you may

exclusively use a fuse (5 x 20 mm) type T1A according to IEC127-2/V. Other fuse types are not

permissible and may lead to serious damage of the unit.

°C

–3

–2

–101234

345678

°C

–25

–20 –15

–10

–5

TEST

20 30 40

min

4. Fault Messages and Trouble Shooting

The following faults are being detected by the control unit:

Fault Reaction

Break or short circuit of the temperature sensor LED “temperature“ flashes,

alarm relay and load relay switch off

Break of the moisture sensor LED “humidity” flashes,

Short circuit of the moisture sensor alarm relay and load relay switch off

Additionally, under short circuit conditions,

Moisture sensor fuse will rupture.

Power failure Alarm relay and load relay switch off

Notice:

- A short circuit at the moisture sensor leads to the triggering of the fuse.

- By that a short circuit is being detected as well because it leads to a break of the sensor cir-

cuit.

In case of a fault at the moisture sensor the moisture measuring circuit will be switched off. The

LED “moisture” will continue to flash. After repair of the moisture sensor the fault signal has to

be cleared by activating the TEST mode (turn the potentiometer for the lower temperature limit

to the left stop and shortly after that back again to the requested lower temperature limit). When

the air temperature falls below the value adjusted at the control unit, then the moisture sensor is

activated and tested again after approx. 10 minutes.

Trouble shooting:

Symptoms Probable causes Correction

Heating cable not heating Moisture sensor not positioned Re-position following the instructions

(snow is not melting) correctly (e.g. not flat in the gutter) in the “Assembly of the Moisture

Sensor” section of this manual

Temperature sensor located in Re-position following the

direct sunlight instructions in the “Assembly of

the Temperature Sensor” section of

this manual

Temperature below set Moisture not detected This is normal operation: low temper-

point, but heating cable ature AND moisture must be detected

fails to operate before the heating cable is energized

Less than 10 minutes have elapsed The moisture sensor is not checked

since the temperature fell below the for the presence of moisture until

setpoint 10 minutes after the temperature falls

below the setpoint

Snow present, Moisture dial set too high Set the moisture dial to a lower

but heating cable fails value

to operate

Poor positioning of the moisture Re-position following the instructions

sensor in the “Assembly of the Moisture

Sensor” section of this manual

Snow begins to clear, Poor positioning of the moisture Re-position following the the instruc-

but the heating cable sensor tions in the “Assembly of the

turns off too soon Moisture Sensor” section of this

manual

Moisture dial set too low Set the moisture dial to a higher value

Temperature has fallen below This is normal operation

minimum temperature setpoint

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