Eaton SmartWire-DT SWD Series Manual

4 PKE-SWD-32, interface for motor-starter combination with PKE PKE12/324.9 ProgrammingSmartWire-DT module IP20 01/20 MN05006001Z-EN www.eaton.com 1154.9.2 Overload relay function (ZMR)The ZMR function enables the motor to be switched off by the connectedcontactor in the event of an overload. To do this the PKE sends the switch offcommand for the contactor to the PKE-SWD-32 via the data cable of thePKE32-COM.The ZMR function is activated using the output data of the PKE-SWD-32 (out-put byte 0 Bit 2).If the ZMR function is deactivated, the connected motor is switched off inthe event of an overload by the electronic PKE motor protective circuitbreaker. The ZMR function cannot be deactivated in the event of an overloaduntil the thermal motor image falls below 100 %.The trip in response to a motor overload occurs if the thermal motor image ofthe PKE reaches 110 %. In this case, the PKE-SWD-32 sends the bit value0x5 via the TRIPR data field (input byte 1, bits 4 - 6). This value stays set untilthe thermal motor image goes below the 100% mark and the contactor isonce more operational.The reclosing readiness of the contactor can be selected by the two manualand automatic operating modes of the ZMR function.Field Value Set time lagCLASS 0x0 Class 50x1 Class 100x2 Class 150x3 Class 200x4 Test position0x5 Not defined0x6 Not defined0x7 Not defined DANGERThe ZMR function must not be activated with reversing starterssince this operation does not ensure the disconnection of thesecond contactor in the event of an overload. DANGERNever disconnect the communication link between the PKE-SWD-32 and the PKE trip block after an overload with the ZMRfunction activated, as this can cause the contactor to switch onif a switch command is present.￫ The ZMR function can only be used in position A of the 1-0-Aswitch.