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INTORQ I Clutch-brake combinations I en 5/2007AccessoriesINTORQ 14.640.10.048 EDS 48 electronic dual switchApplication areaUsing 24 V standard excitation to switch:| Clutch-brake combinations| Other coils which are to be switched on the DC side inalternating or parallel operationThe EDS 48 electronic dual switch is ideal for controlling twocoils.EDS 48 dimensions“130”“30100”“FeaturesThe EDS 48 electronic dual switch contains the completepower supply for a 24 V DC voltage coil and can be operatedusing control voltages (e. g. from a PLC) or pulses. A pulseat the START input switches the clutch on until a pulse at theSTOP input switches the clutch off and the brake on. Aprogram switch can be used to preselect the type of braketo be controlled (electromagnetic or spring-applied brake).Note:When using spring-applied brakes, the transformer powermust be dimensioned for the sum of the clutch and brakingpowers.Delay times can be set on two potentiometers to preventclutches and brakes that do not have a common armatureplate working in opposition. The input electronics arepotential-free and isolated from the power section by anoptocoupler.For safety reasons, the clutch is always set to "off" and thebrake to "on" following mains connection or the closing ofswitch a1. The device is able to execute the first startcommand (clutch ON) approximately one second later. If astart command is already present at the input before themains connection is made, the brake remains switched onuntil a new start command is sent.If required, switch a1 can serve as an "emergency-off"switch.35Technical dataStandard excitation24 VInput voltage230 V, 50/60 HzCoil voltage24 VMax. coil power: With EDS 48 type 14.640.10.048 50 WMax. operating frequency: Up to 35 W Five switchingoperations/sUp to 50 W Two switchingoperations/sConnectable coilsTwo unitsMax. control current at 24 V10 mA approx.Auxiliary supply at terminals 30 and 3115 VMax. current of the auxiliary supply30 mAMax. delay time250 msControl pulses≥ 3 msEDS 48 weight1.8 kgControl options| PLC (programmable logic controller)| Contacts| NPN (PNP) proximity switches| NPN (PNP) photoelectric barriers“50“ ””4.5““6.5“50 100““50
INTORQ I Clutch-brake combinations I en 5/2007AccessoriesINTORQ 14.640.10.048 EDS 48 electronic dual switchConnection examplesControl via continuous signalsSwitching via contactPressing the a2 switch turns the brake "off" and the clutch"on" (start), if a1 is not closed. If a2 is opened, the clutchswitches "off" and the brake "on" (stop). The first startcommand is executed no earlier than approximately1 second after the mains voltage is switched on or after a1is opened.Fig. 1Switching via optocouplerThis example is as Fig. 1, but an optocoupler or a transistoris used instead of a contact.Fig. 2Switching via proximity switchThis example is as Fig. 1, but a PNP proximity switch is usedinstead of a contact.Colours: bk. = black/bl. = blue/br. = brownProximity switch damped = clutch "on"/brake "off"Proximity switch free = brake "on"/clutch "off"bk.Fig. 3Switching via PLCIn this example, a PLC with a control voltage of 10 to 30 V isused for control.Control voltage "on" = clutch "on"/brake "off"Control voltage "off" = brake "on"/clutch "off"Fig. 4CautionThe cables to the coil must not short-circuit or have aconductive connection to earth (electrical bonding), thePEN conductor or other coils.51
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