User manual
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microlming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represent the technical status at the time of printing.
© Copyright 2018 by Conrad Electronic SE. 1566302_3_V1_0618_02_VTP_m_en
Soldering relay (only with item no. 1566302)
First, a suitable relay must be soldered into the relay board.
The following tools and accessories are required for soldering:
• soldering iron or soldering station
• electronic solder
• at nose pliers
• electronic side cutter
The relay is normally mounted on the board top (on the side with the assembly print/connection
terminals). It is soldered to the underside of the board.
After the relay is inserted into the circuit board, make sure that the connection wires of the
relay are bent off by approx. 45°. This prevents the relay from falling off when the circuit board
is turned around.
Switch on your soldering iron or soldering station and heat up to about 320 to 400 °C (in ac-
cordance with the tin-solder being used). Observe the operating instructions of the soldering
iron or soldering station; improper handling, may lead to danger of burns and re!
Solder the relay terminals carefully. Make sure you always have a clean soldering tip during
the soldering process. Clean the tip with a wet cleaning sponge or dry cleaner before each
soldering procedure.
The soldering process should only be performed as long as necessary and for as short a time
as possible. Heat up the soldering joint and the connection lead with the soldering tip and add
some tin-solder. Wait until the solder has blended neatly and then remove the soldering tip. The
soldering joint should be cone-shaped and shiny.
Remove the protruding connecting leads above the soldering joint by using the electronic wire-
cutter. Make sure that no wire ends recoil; risk of injury!
Finally, recheck the soldering joints for cleanness and make sure that no short-circuits have
been created.
Installation and connection
It is important that you read these operating instructions, including the safety instruc-
tions thoroughly and carefully before rst use to ensure that you will launch the relay
board properly! If in doubt, let a specialist do the installation and connection.
Only connect boards when they are disconnected from voltage/current. Otherwise,
there is a risk of a life-threatening electric shock!
a) Installation
The relay board must be installed so that accidental contact is avoided. Here also a sufcient
distance to low voltage or non-mains-carrying circuit parts must be observed. Secure the board
so that it will not come loose.
Warning! There is a risk of a life-threatening electric shock if the work is done incor-
rectly!
b) Connection
• Two-pole connection terminal “IN”: Control voltage (230 V/AC, 50 Hz) connection for switch-
ing the relay contacts (connection phase/L and neutral conductor/N is not important)
When control voltage is applied, a control LED will go on next to the connection
terminals. You can route the LED light. to the front of an enclosure using suitable
light conductors, for example.
• Two three-pole connection terminals “CO/ NC/NO”: Relay switching contacts; two potential-
free switching contacts
CO = Common switching contact
NC = Switch output “normally closed” (closed when idle)
NO = Switch output “normally open” (open when idle)
Secure all cables carrying mains voltage appropriately. Ensure appropriate strain
relief of the mains cables dependent on the place where the relay board is installed.
Maintenance
The relay board is maintenance-free. However, check the connection leads for damage from
time to time and that the connections are mechanically secured.
Only an authorised expert may perform repairs.
Before you start working on the module, disconnect the mains cable from voltage/
current; the same also applies to all devices connected to the relay contacts.
Disposal
Electronic devices are recyclable material and do not belong in the household
waste. Dispose of an unserviceable product in accordance with the relevant statu-
tory regulations.
Technical data
Item no. 1566302 1566303
Version without relay with relay
Control/operating voltage 230 V/AC, 50 Hz 230 V/AC, 50 Hz
Switching power
(ohmic, resistive load)
according to relay max. 150 W, max. 1250 VA
Switching current according to relay, max. 8 A max. 5 A
Switching voltage depending on the relay,
max. 250 V/AC/DC
max. 125 V/DC,
max. 250 V/AC
Switching contacts according to relay Relay, 2x changeover
contacts, potential-free
Dimensions (L x W x H) 72 x 20 x 36.5 mm 72 x 20 x 36.5 mm
You can nd the relays suitable for the item no. 1566302 on the product website at
www.conrad.com.
Necessary relay contact layout Dimensions on the board