Relays and Optocoupler

These cards are developed to control and record external circuits. By using optocouplers the controlling system is always protected by galvanic isolation.
Optocouplers switch external circuits galvanically isolated or can record switching activities of external circuits. Relays switch external circuits mechanically.

 
Ethernet  
 
    Relay Opto-Input Opto-Output
Bus Numbers Type Capacity / Power Number of Opto-In Voltage Number of Opto-Out Voltage
                 
ETHOPTOREL8Eth 8 switch-on 1A / 15W 8 5V-30V - -
Ethernet 8 Opto In + 8 Relay Card
Input edge detection ( 8 Flipflops through software readable ),
Timeout detection ( switches all outputs off if software hangs ),
Samples for .NET, Visual Basic, Visual-C/C++, Borland Delphi, Borland Builder,
Labview, Sun Java, Agilent VEE, LabWindows/CVI  More info...

                 
ETHOPTOREL8Eth 8 switch-on 1A / 15W 8 5V-30V - -
Ethernet 8 Opto In + 8 Relay Card
Input edge detection ( 8 Flipflops through software readable ),
Timeout detection ( switches all outputs off if software hangs ),
Samples for .NET, Visual Basic, Visual-C/C++, Borland Delphi, Borland Builder,
Labview, Sun Java, Agilent VEE, LabWindows/CVI  More info...

                 
ETHOPTOREL8_3AEth 8 switch-on 3A / 90W 8 5V-30V - -
Ethernet 8 Opto In + 8 Relay Card
Input edge detection ( 8 Flipflops through software readable ),
Timeout detection ( switches all outputs off if software hangs ),
Samples for .NET, Visual Basic, Visual-C/C++, Borland Delphi, Borland Builder,
Labview, Sun Java, Agilent VEE, LabWindows/CVI  More info...

                 
ETHOPTOREL8_3AEth 8 switch-on 3A / 90W 8 5V-30V - -
Ethernet 8 Opto In + 8 Relay Card
Input edge detection ( 8 Flipflops through software readable ),
Timeout detection ( switches all outputs off if software hangs ),
Samples for .NET, Visual Basic, Visual-C/C++, Borland Delphi, Borland Builder,
Labview, Sun Java, Agilent VEE, LabWindows/CVI  More info...

                 
ETHOPTOREL32ETH 32 switch-on 1A / 15W 32 5V-30V - -
Ethernet 32 Opto In + 32 Relay Card
Special Features: Input edge detection (32 Flipflops through software readable),
Timeout detection ( switches all outputs off if software hangs ),
Fast and precise recording and processing of switching events  More info...

                 
ETHOPTOREL32ETH 32 switch-on 1A / 15W 32 5V-30V - -
Ethernet 32 Opto In + 32 Relay Card
Special Features: Input edge detection (32 Flipflops through software readable),
Timeout detection ( switches all outputs off if software hangs ),
Fast and precise recording and processing of switching events  More info...

                 
ETHOPTO32IOEth - - - 32 5V-30V 32 5V-30V
Ethernet32 Opto In + 32 Opto Out including optical verification of operation
Timeout detection by switching off outputs
Identification of input change in states between two read instructions (flip-flop)
Simple assembly on top hat rails  More info...

                 
ETHOPTO32IOEth - - - 32 5V-30V 32 5V-30V
Ethernet32 Opto In + 32 Opto Out including optical verification of operation
Timeout detection by switching off outputs
Identification of input change in states between two read instructions (flip-flop)
Simple assembly of top hat rails  More info...

                 
ETHREL64Eth 64 switch-on 3A/90W
1A/15W
- - - -
Ethernet 64 Relay Card
Special Features: Timeout detection ( switches all outputs off if software hangs )
64 LED´s for optical function control of all output signals
Samples for .NET, Visual Basic, Visual-C/C++, Borland Delphi, Borland Builder, Labview, Sun Java, HP VEE respectively Agilent Vee, LabWindows/CVI and Linux 2.4.x & 2.6.x Kernel  More info...

                 
ETHREL64Eth 64 switch-on 3A/90W
1A/15W
- - - -
Ethernet 64 Relay Card
Special Features: Timeout detection ( switches all outputs off if software hangs )
64 LED´s for optical function control of all output signals
Samples for .NET, Visual Basic, Visual-C/C++, Borland Delphi, Borland Builder, Labview, Sun Java, HP VEE respectively Agilent Vee, LabWindows/CVI and Linux 2.4.x & 2.6.x Kernel  More info...

                 
ETHOPTO64INETH - - - 64 5V-30V - -
Ethernet 64 Opto-In
Special Features: Input edge detection (64 Flipflops through software readable),IRQ on change of input signal
Fast and precise recording and processing of switching events
Simple assembly in a rack, as a standalone equipment in the laboratory area or as a mobile equipment for a notebook  More info...

                 
ETHOPTO64INETH - - - 64 5V-30V - -
Ethernet 64 Opto-In
Special Features: Input edge detection (64 Flipflops through software readable),IRQ on change of input signal
Fast and precise recording and processing of switching events
Simple assembly in a rack, as a standalone equipment in the laboratory area or as a mobile equipment for a notebook  More info...

                 
ETHOPTO64OUTETH - - - - - 64 5V-30V
Dieses USB-Modul mit 64 Optokopplerausgängen verfügt über eine integrierte Timeoutfunktion, die alle Ausgänge bei Eintritt eines Timeouts, z.B. einem Softwareabsturz abschaltet.  More info...


Description:

The inputs and outputs of a card are controlled by software.
If a relay is adressed a contact is either opened or closed. By that it is responsible to take into account, that the external current is not chosen to high, because in that case the switching contacts of the relay are overloaded. Every relay has two own connections, so that the switching between currents with different potentials and also the switching of alteranting voltage is possible.
In contrast to a relay, the controlling signal is light. Opto couplers can only switch DC circuits and record DC processes (opto inputs and outputs), but their special merits are high switching speed and a relatively wide voltage range (see technical data). All opto couplers have one common earthing. TTL conductions work bidirectional, they are inputs and outputs. Therefore, they can both record data and control external devices.


Usage:

Relay cards are very useful for the power switching. They are very flexible by choosing the used voltages and can also be used for currents higher than 1 A ore more. To switch surrent circuits on or off, which work with a alternating voltage of 25 V it is recommandable to use a 230 V card. With this card the 230 V are leaded direct to the PC. If this is not the result you can alternatively use a normal relay-, opto- coupler- or TTL- card, if you connect an extern relay with the corresponding current supply.
Opto coupler cards are used if a galvanical separation of circuits is needed or sensible (for example to avoid trouble when transmitting data over long dinstances). Without special drivers, they can only be used for low currents. The opto coupler card which records external switching processes fastest and most precisely is best suited.


Glossary:

Relays:
Relays are used as switches.
If a relay is connected by our cards, the switching contact is either opened or closed, so that a connected current circuit (with external power supply) is opened or closed. Please note, that the extern current must not be to big, otherwise the switching contacts of the relay is overloaded. There are two different types of relays. The switch-on relays close and the switch-over relays open or close one switching circuits each.

Opto coupler:
Switches depending on current which realize by their design a galvanical separation to the computer. Opto couplers switch very fast, but are restricted in the usability by a voltage range of 30 V direct current.

Galvanic separation:
'Galvanically separated' means that the separated components have no electrical conductions to each other. A galvanical separation to the computer guarantees that voltages of the module cannot break into the computer.

Common earthing:
All opto couplers are combined in 8 part groups. That means that 8 opto couplers have one common earthing. On reason for that is to avoid unnecessary sources of interference.