Kriwan Compressor Protection Module INT69 SC2 071-0649-00 Protector Copeland

COPELAAN SCROOL ™ COMPRESSOR PROTECTION MODULE INT69 SC2 & INT 69 SCY2 2C COMPLIANT TO IEC/ EN60335

 1 Introduction IEC/EN60335 recognizes the internationally accepted level of protection against hazards such as electrical, mechanical, thermal, fireand radiationof applianceswhenoperatedas innormal use taking intoaccount the manufacturer's instructions.Thisstandarddealswiththesafetyofelectricalappliancesforhouseholdandsimilar purposes, theirratedvoltagebeingnotmorethan250Vforsingle-phaseappliancesand480Vforotherappliances. Italsocoverssituationsthatcanbeexpectedinpracticesuchasappliancesnot intendedfornormalhouseholduse butwhichmaybeasourceofdanger tothepublic, suchasappliancesusedbypeopleinsupermarkets, inlight industryandonfarms. The INT69SC2and INT69SCY2hermeticmotor protectionmodulescomplywith IEC/EN60335. Themodules featuresensurethat theAC/ refrigerationsystemwouldbe inasafeconditioneven if twofaultsweretooccur. Backup isprovided if the first fault protectionshould fail.Anadditional control contactor shouldbe fitted to the system(seethewiringdiagrambelow)

2.1 Introduction TechnicalInformation INT69SC2 motor protector has been specially developed for use with Copeland Scroll™ air conditioning and heat pump compressors and is approved by UL- UL File no. E75899 and IEC/EN 60335 (Registered number C400). This module has an expected mechanical service life of approximately 1 million switching cycles

2.2 Safety information Figure 3: Wiring diagram Electrical connections must be made by qualified electrical personnel. The upper supply voltage limit for this module must not be exceeded. All valid standards for connecting electrical and refrigeration equipment must be observed. 2.3 Function At the measuring circuit input of the INT69SC2 module it is possible to connect up to nine DIN 44081/082 conforming PTC sensors, including those with differing nominal response temperatures. If the temperature in one of the monitored parts exceeds the nominal response temperature of the respective PTC sensor, the sensor becomes highly resistive and the relay opens. The relay will close after either a time delay of 30 or 60 minutes or if the mains supply has been disrupted for 5 seconds. For the relay to close the PTC resistance value must be below the reset point. If not, there will be a further delay until the monitored temperature reaches the reset point. The sensor, relay and supply circuit (AC) are isolated from each other. This device has a short circuit detector for the PTC sensor.

 3.1 Introduction TechnicalInformation The INT69SCY2 motor protector has been specially developed for use with Copeland Scroll™ refrigeration compressors and is approved by UL- UL File no. E75899 and IEC/EN 60335 (Registered number C400). It monitors the motor winding temperature, discharge temperature, phase sequence and phase failure. This module has an expected mechanical service life of approximately 1 million switching cycles.

 3.2 Function Figure 5: Wiring diagram Connection to the supply voltage is followed by a 3-second initialisation period. The relay closes once all of the PTC thermistors are below the nominal response temperature. It is possible to connect up to nine PTC sensors with differing nominal response temperatures in series to the PTC input. If the temperature in one of the monitored parts exceeds the nominal response temperature of the respective PTC sensor, the sensor becomes highly resistive and the relay opens. The relay will close once the delay time of approximately 30 minutes has expired. The monitoring of the 3-phase motor voltage becomes active 1 second after the motor has started for a duration of 5 seconds.    If there is a wrong phase sequence the relay opens. If one phase is missing the relay opens and closes after a 5 minute delay (approximately). After 10 shut offs within 24 hours due to phase failure the relay will stay locked open. Reset the module by disconnecting the power supply for 5 seconds. The relay output is designed potential free and opens if there is a fault or if the supply voltage fails. The sensor and supply circuits on AC units are isolated from each other. The INT69SCY2 is not suitable for use with frequency inverters. 3.3 Safety information Electrical connections must be made by qualified electrical personnel. The upper supply voltage limits for this module must not be exceeded. All valid standards for connecting electrical and refrigeration equipment must be observed.