GW20825 - Digital timer switch Gewiss - Free user manual and instructions

Product Type	Programmable digital time switch
Brand	Gewiss
Model	GW20825
Category	Digital time switch
Power supply	230 V ~ (mains); rechargeable battery ML 1220 (backup)
Dimensions (format)	2 modules (Playbus or System)
Display	Backlit LCD
Programming	Daily and weekly, up to 12 switchings per hour, 5-minute step
Operating modes	Automatic, manual, Off
Relay output	1 NO/NC, 8 A (AC1) / 4 A (AC15), 250 V~
Remote control	Via GSM system GW90821 (SMS)
Backup in case of power failure	Backup battery (24 h autonomy)
Installation	Flush or surface mounting on DIN rail (via supports)
Protection class	Indoor use, environment free of dust and water
Standards	Compliant with national standards and IEC 60364 / HD 60364
Maintenance	Clean with a dry cloth; do not use abrasive products
Spare parts / repairability	Replaceable battery (ML 1220); no other user-serviceable parts
Safety	Follow installation and operating instructions strictly
Provided accessories	Instruction manual

Frequently Asked Questions - GW20825 Gewiss

How to program the GW20825 time switch?

Press the SET/PROG button twice. The display shows 'PROG' and the first day flashes. Select the day with ▲▼, confirm with MODE. Then set the switching time (in 5-minute steps) and the ON/OFF state. Repeat for each day. To copy a program to the next day, press ▲ and ▼ simultaneously during programming.

What to do in case of a power outage?

The switch is equipped with a backup battery that maintains the time and day for about 24 hours. Programs are not lost. If the battery is discharged, after power returns you may need to set the time again.

How to switch to manual mode?

Press the MODE button several times until the display shows 'MAN'. Then use ▲ and ▼ to select the ON or OFF state of the output. Manual mode forces the relay to stay in that state until changed.

How to set the time and day?

Press SET/PROG once. 'SET' appears. The day flashes: choose with ▲▼ (1= Monday...7= Sunday) and confirm with MODE. Then the time flashes: set the hours then minutes in the same way. Programming exits automatically after 30 seconds of inactivity.

Can I copy a program over several days?

Yes, during programming, after setting the schedules for a day, press ▲ and ▼ simultaneously within 30 seconds. The program is copied to the next day. You can repeat to copy over several consecutive days.

How to use the GSM remote control?

The switch connects to the GSM system GW90821 via the serial terminals. Send an SMS with predefined commands to change the mode (MAN/AUTO/OFF) or the ON/OFF state, or to request the current state. A confirmation is sent back by SMS.

What do the symbols on the screen mean?

The LCD screen displays the time profile, relay status (ON/OFF), day, time, mode (OFF/MAN/AUTO), and a remote control symbol. In AUTO mode, the profile segments indicate ON (high) or OFF (low) for each hour.

How to replace the battery?

Remove the small cover on the back of the housing (figure A). Use a small screwdriver to extract the battery (figure B). Replace with an identical ML 1220 battery. Observe polarity. The battery is only for backup; the device operates normally on mains.

What is the programming resolution?

Programming is done in 5-minute steps. You can set up to 12 relay switchings per hour, i.e., one switching every 5 minutes maximum.

Can the switch be installed outdoors?

No, it is designed for indoor use in an environment free of dust and water. It must be installed in accordance with applicable electrical standards (IEC 60364 / HD 60364).

USER MANUAL GW20825 Gewiss

16:28 07 AM PM OFF MAN AUTO SET PROG MODE SET PROG

16:28 AUTO SET

Technical line drawing of an air conditioner unit with internal components and a separate cover (no text or symbols)

Warning ! The safety of this appliance is only guaranteed if all the instructions given here are followed scrupulously.

These should be read thoroughly and kept in a safe place.

System-Playbus products can be installed in environments which are dust-free and where no special protection against the penetration of water is required.

They shall be installed in compliance with the requirements for household devices set out by the national standards and rules applicable to low-voltage electrical installations which are in force in the country where the products are installed, or, when there are none, following the international standard for low-voltage electrical installations IEC 60364, or the European harmonization document HD 60364.

GEWISS sales organization is ready to provide full explanations and technical data on request.

CONTENTS

USER INSTRUCTIONS page

• General description 20
• Control description 21
• Operating modes.... 22
• Setting parameters.... 23
• Programming 24
• Automatic operation 26
• Manual operation 26
• Visual display unit.... 27
• Remote control.... 27
• Operating in case of blackout.... 28
• Preset parameters.... 28

INSTALLATION INSTRUCTIONS

• Assembly 29
• Terminal description 30
• Battery removal.... 30

FUNCTIONAL FEATURES/TECHNICAL DATA.... 31

General description

The programmer is used for the timed management of a load, with programming on a daily and weekly basis using a relay output.

The programmer is fitted with a backlighted LCD visual display unit (VDU) and four control buttons for managing the device.

16:28 07 AM PM OFF MAN AUTO SET PROG MODE SET PROG

Control description

USER INSTRUCTIONS	Symbol
1 MODE: select mode	MODE
2 Increment/Select parameters
3 Decrement/Select parameters
4 SET/PROG: Set programs/Programming	SET/PROG
VDU SIGNALS
5 Daily program profile
6 Relay status (ON/OFF)
7 Command signal by GSM remote control unit (via SMS)
8 Day
9 Time
10 Operating mode	OFF MAN AUTO

Warning: at switch-on the programmer carries out a self-diagnosis of approximately 15 seconds displaying all the icons on the VDU.

Operating mode

The programmer provides three different operating modes:

• MANUAL
• AUTOMATIC
• OFF

The MODE key is used to switch from one mode to another.

1 2 3 4 5 6 7 16:28 ON MAN

In manual mode it is possible to set the output in a permanent state. The time, the day of the week, the message MAN and the indication of the relay status (ON/OFF) are displayed on the VDU.

1 2 3 4 5 6 7 16:28 ON PM 0 3 6 9 12 AUTO

In automatic mode the device uses a program set by the user, which can also be differentiated for each day of the week. The time, the day of the week, the message AUTO and the current relay status (ON/OFF) are displayed on the VDU. The message AM or PM shows which fraction of the day is displayed in the hourly profile.

The segment relative to the current time blinks in the hourly profile with the representation of the status of the output (high segment ON, low segment OFF).

1 2 3 4 5 6 7 16:28 OFF OFF

In OFF mode the N.A. relay contact is kept constantly open while the N.C. contact is closed.

The time, the day of the week and the message and indication of the relay status (OFF) are displayed on the VDU.

Setting parameters

The SET/PROG key is pressed once to set the parameters.

The message SET is displayed on the VDU.

At this point the following can be modified, in sequence:

• the day of the week
• the hour
• the minutes

The value of each parameter is confirmed by pressing the MODE key.

The setting phase is exited by pressing the SET key again or, in automatic mode, 30 seconds after the last key entry.

16:28 AUTO SET

Setting the day of the week

When the day of the week bar blinks, select the day of the week using the keys(Monday=1, Tuesday=2.....

Sunday=7).

The value set is confirmed by pressing the MODE key within 30 seconds.

1 2 3 4/5 6 7 16:28 AUTO SET

Setting the hour

When the hour figures blink, set the hour using the A V keys.

The values set are confirmed by pressing the MODE key within 30 seconds.

1 2 3 4 5 6 7 16:28 AUTO SET

Setting the minutes

When the minutes figures blink, set the minutes using the keys.

The values set are confirmed by pressing the MODE key within 30 seconds.

Programming

The SET/PROG key is pressed twice to personalise the preset daily/weekly program or to make a modification to a previously set cycle.

1 2 3 4 5 6 7 00:00 AM 0 3 6 9 12 AUTO PROG

a) The message PROG is displayed on the VDU while the bar for the first day of the week starts to blink.

The required day is selected with the keys

The selection is confirmed by pressing the MODE key within 30 seconds.

1 2 3 4 5 6 7 00:00 ON AM 0 3 6 9 12 AUTO PROG

b) The profile of the day selected is displayed on the VDU. c) The time starts to blink.

The keys are used to select the start hour from which it is required to modify the proposed profile; while the time profile is being incremented, the column relative to the selected time will blink. The selection is confirmed by pressing the MODE key within 30 seconds.

1 2 3 4 5 6 7 0 1:00 AM ON 0 3 6 9 12 AUTO PROG

The message ON (or OFF) blinks on the VDU.

The keys can be used to modify the output status,

The modification takes effect starting from the time selected and extends until the next transition or until the end of the day that is being programmed if there are no subsequent transitions.

The choice is confirmed by pressing the MODE key within 30 seconds.

Programming

1 2 4 5 6 7 0 1:00 OFF AM AUTO PROG

e) The time blinks, select the start hour from which it is required to select a new switch as described in point c).

The time is incremented/decremented in steps of 5 minutes each time the keys are pressed.

It is therefore possible to define up to 12 relay switches every hour.

The programming is confirmed by prolonged pressure on the MODE key.

A move is made automatically to programming the next day.

The programming phase is exited by pressing the SET key or, in automatic mode, 30 seconds after the last key entry.

Save and propose again

If, however, it is required to copy the program directly to the next day, the programming just done is confirmed by pressing the keys simultaneously 30 seconds.

In this mode the program just run is saved and also proposed again the next day; to copy and save the same program over several days, repeat the operation of simultaneously pressing the keys within 30 seconds.

On completion of weekly programming the SET/PROG key is pressed to return to normal operating.

Automatic operation

The program is started by selecting automatic mode by pressing the MODE key until the AUTO symbol is displayed on the VDU.

In AUTO operating mode the hourly profile relative to the fraction of the day in progress (AP/PM) is displayed.

The profile relative to the other fraction of the day can be displayed by pressing the AV keys simultaneously. The indication is active for 5 seconds, after which the current profile reappears.

Manual operation

1 2 3 4 5 6 7 16:28 ON MAN

The manual operating mode activated by pressing the MODE key until the MAN message is displayed on the VDU.

The keys are used to set the required output status. The selected status (ON/OFF) is displayed on the VDU.

Visual display unit

The LCD visual display unit is provided with backlighting which is active for 5 secs whenever a key is pressed.

In SET or PROG mode the backlighting remains active during parameter setting and programming. It is deactivated on exit from these modes.

Remote control

The programmer can be connected to the GW90821 GSM remote control unit using a serial connection. SMS commands (e.g. from a cellular telephone) can be used to:

• Set the operating mode (MAN/AUTO/OFF)
• Set the output status (ON/OFF)
• Request the current status

Each command SMS sent to the device will be answered by a corresponding SMS in confirmation (with non-configurable predefined text); the status request message provides a reply including the following information:

• current operating mode (OFF/AUTO/MAN)
• output status (ON/OFF)

Whenever the output status or operating mode are modified from the remote control unit, the symbol is displayed on the VDU.

The symbol also appears for the current contact status request. The symbol remains displayed on the VDU until a key is pressed.

Operating in case of blackout

The device is fitted with a backup battery that guarantees updating of the time and day of the week in case of blackout.

When power is supplied by the battery alone there is an autonomy of 24 hours in the following conditions:

• time display active
• backlighting inactive
• output status display inactive
• relay switching not enabled (the relay contact retains the status prior to the blackout)
• front keys inactive (except when all 4 keys are pressed simultaneously)

In the absence of power, simultaneously pressing all four front keys causes disconnection of the backup battery inside the device.

This function is used to preserve the efficiency of the battery when the device is not used for a long period.

The battery is connected again automatically once the device has been connected to the power mains.

The set programs are not lost either in the case of a blackout or in that of battery disconnection.

Preset parameters

Day of the week	1 : Monday
Time	00:00
Output status (MAN mode)	OFF (MAN)

INSTALLATION INSTRUCTIONS

Assembly

Example of installation using plates and 2 module supports (Playbus for GW30413 or System for GW20825 -GW21825)

Technical line drawing of an air conditioner unit with internal components and wiring (no text or symbols)

INSTALLATION INSTRUCTIONS

Terminal description

N L 1 2 3 4 5 6

1 2 3

Cabling terminals

Power supply

L - Phase

N - Neutral

Output relay

1 - NA contact

2 - NC contact

3 - Common

Serial line

4 - TX (output data)

5 - GND (common)

6 - RX (input data)

Battery removal

A

A 1 2 3 6

B

B 1 2 3 4 5 6 e of the device, as grammer's battery own in figure A. ended for extracting

In case of necessity (e.g. having to dispose of the device, as laid down by the WEEE standards), the programmer's battery is accessible by removing the cover as shown in figure A. The use of a small screwdriver is recommended for extracting the battery as shown in figure B.

TECHNICAL DATA

Operating modes

Time programming resolution

Max. n° of settable relay switches

Remote control

Output contact

Power supply

Dimensions

Automatic, manual, off

5 minutes

12 per hour

With GW 90821 GSM remote control unit

Relay, without potential

1 NA/NC 8A (AC1)/4A (AC15), 250Vac

Mains (230V ac) – normal operation

Rechargeable battery (ML1220) – mains blackout

2 Playbus or System modules

FRANÇAIS

ATTENTION - IMPORTANT

16:28 07 AM PM OFF MAN AUTO SET PROG MODE SET PROG

16:28 AUTO SET

Programmation minutes

Technical line drawing of an air conditioner unit with internal components and a separate panel (no text or symbols)

INSTRUCTIONS POUR L'INSTALLATION

Description bornes

N L 1 2 3 4 5 6

1 2 3

Bornes de câblage

Alimentation

L - Phase

N - Neutre

Relais de sortie

1 - Contact NO

2 - Contact NF

3 - Commun

Ligne sérielle

16:28 07 AM PM OFF MAN AUTO SET PROG MODE SET PROG

Descripción mandos

16:28 AUTO SET

Technical line drawing of an air conditioner unit with internal components and a separate panel (no text or symbols)

16:28 07 AM PM OFF MAN AUTO SET PROG MODE SET PROG

16:28 AUTO SET

Technical line drawing of an air conditioner unit with internal components and a separate panel (no text or symbols)

Automatisch, manuell, off.

5 Minuten

12 in der Stunde

According to article 9 paragraph 2 of the European Directive 2004/108/EC and to article R2 paragraph 6 of the Decision 768/2008/EC, the responsible for placing the apparatus on the Community market is:

GEWISS S.p.A Via A. Volta, 1 - 24069 Cenate Sotto (BG) Italy Tel: [phone] Fax: [phone] E-mail: [e-mail]

[phone]

8.30 - 12.30 / 14.00 - 18.00