Chapter 5—System Configuration and Operation78 Power Xpert C445 Global Motor Management Relay MN042003EN—January 2019 www.eaton.comControl SettingsThe following parameters are used to configure the Star/Delta Operation Mode and the C445 sources of control.Table 14. Star/Delta Configuration ParametersNote1 Soft reset (power cycle) required for changes to these parameters to take effect.Fieldbus Control WordThe star/delta motor starter profile will accept the followingcontrol commands over a fieldbus network.Control BitsBit 0 0 = Stop command, de-activate all control outputs1 = Run1 command, begin start sequenceBit 2 This bit can be used to switch between Local andRemote from the network when the Allow RemoteControl Switch parameter is enabled.Bit 3 0 = No action1= Reset fault (will clear fault provided conditionhas cleared)Bit 5 0 = No action1= The C445 will issue a “Test Trip” fault causingthe Outputs 1-3 control relays to openControl Status WordThe control status word of the direct motor starter profile canbe accessed over the fieldbus network.Status BitsBit 0 0 = Stopped (No active Run1 command)1= Running1 (Run1 command is present)Bit 2 0 = local control source active1= remote control source is activeBit 3 0 = no fault present1= C445 fault presentBit 4 0 = no warning present1= C445 warning presentBit 5 0 = no inhibit present1= C445 control inhibit presentBit 6 0 = C445 not ready (fault and/or inhibit present)1= C445 ready for control (No fault or inhibit present)Bit 7 0 = motor is not up to speed (AtRef)1= C445 has detected motor is up to speed ondelta winding (AtRef)Two conditions will set the AtRef bit, signaling the motor isup to speed.● After transitioning to the delta winding, if motor currentincreases above 115% of the active overload FLA ratingand then decreases back below 115% of the activeoverload FLA rating, it is determined the motor has comeup to speed and the AtRef bit will be set.● After transitioning to the delta winding, if motor currentexceeds 30% of the active overload FLA rating andremains until after the start delay time expires the motor isdetermined to be up to speed and the AtRef bit will be set.Configuration Parameter Modbus Register Description Read/WriteActive Operation Mode 1 700 This parameter selects the Operation Mode R/WControl Fault Delay 701 Delay time before a control fault is issued. A setting of “0” disables this protection. R/WNetwork Contactor Settle Time 704 Settle delay time before 2 nd contactor is activated – ensures the first contactor issealed in before applying the lineR/WMaximum Star Winding Time 705 Maximum time the control will stay on the star winding before transitioning to thedelta winding in 100msR/WMotor#1 Overload FLA Scaled 900 This parameter is to set the overload full load amp rating when on the star winding R/WMotor#2 Overload FLA Scaled 901 This parameter is to set the overload full load amp rating when on the delta winding R/WMotor Overload Trip FLA 500 This parameter contains the active motor overload FLA(will contain the motor1 setting when on the star winding and the motor2 settingwhen on the delta winding)RTrip Enable Bit Field 1000-1001 Trip (Fault) protection enable bitsSet bits to enable desired motor protectionsR/WWarn Enable Bit Field 1002-1003 Warning protection enable bitsSet bits to enable desired motor protections warningsR/WC445 Local Source Selector 1 711 Select the Local Control source. R/WC445 Remote Source Selector 712 Select the Remote Control source. R/W
