Application Examples Micro ICCS vs. Standard Relays Application Function Description Controller for air conditioning system Requirements A producer of air conditioning systems want to control his product in a following way: If the car engine is on, the compressor and the thermostat are on and the voltage is over 10 V, than the fan should start automatically. If the voltage is under 10 V and the circuit breaker gets triggered, the LED lamp should get on. www.we-online.com If If engine ON and compressor ON and thermostat ON and circuit breaker OK (=not triggered) and voltage OK (> 10V) circuit breaker not OK (=activated) and if voltage not OK (<10V) than air conditioning ON than LED ON Application Examples Micro ICCS vs. Standard Relays Creation of a Graphical Function Plan Solution with a standard relays Rel 5 Rel 6 Condenser FAN Rel 7 Default Lamp Clim. Motor +12 or 24 V Rel 8 Power supply present after circuit breacker (On if OK) Rel 1 Compressor +12 or 24 V Motor ON Rel 9 Rel 2 Thermostat ON Rel 3 Voltage Measurement (On if OK) Rel 4 +12 or 24 V www.we-online.com Solution with Micro ICCS Application Examples Micro ICCS vs. Standard Relays Realisation on a PCB Solution with standard relays (X3) (X2) (X4) Solution with Micro ICCS (X3) (X2) (X4) (X5) 125mm 90mm (X5) X 1 1 Micro ICCS X 1 4 micro-relays 90mm Advantages 90mm voltage monitoring relay multi-contact relay www.we-online.com Space and weight savings Reduction of components Less assembly and installation effort Application Examples Micro ICCS with Special Functions Application Function Diagram Impulse stabilisation and extension Requirements The user wants to transform an impulse, which is between 5 and 8 volts and lasts for about 2ms, into an 24V impulse, which is 8ms long. 8ms www.we-online.com Application Examples Micro ICCS with Special Function Application Function Diagram Pre-heating of an engine Requirements During preheat phase, the grid heater has to be powered and a light as to be turned on in the dashboard Keyswitch Analogue value comparison Timing for an activated function Priority handling on starter status An extension to this program could be a second comparison (with another temperature set point) of the cooling liquid temperature if cranking is asked to allow or not the cranking order. Contact switched Yes Preheat phase Time Preheat phase = 15 sec. No STOP Postheat phase Engine Status Off AND Time elapsed Engine can be started No On STOP AND Cooling liquid temperature Below -7°C Yes No Stop Preheat phase Yes Crancked up STOP Starter Analogue input Output www.we-online.com Yes Digital input Grid heater is powered through the relay output Light is handled by the open collector output