Eaton RTC-100 Instruction Manual

Contents

5Instruction Booklet IB 70-8698Instruction Manual for the Eaton RTC-100Automatic Transfer Switch Controllereaton Corporation www.eaton.comEffective December 2009Section 2: Hardware Description2.1 GeneralThe purpose of this section is to familiarize the reader with theRTC-100 controller hardware, its nomenclature, and to list the unit’sspecifications.2.2 LED Indicators• Utility AvailableThe green Utility Available LED illuminates if the utility powersource meets the criteria to be considered “available”. That is,when it is within its undervoltage range.• Generator AvailableThe red Generator Available LED illuminates if the generatorpower source meets the criteria to be considered “available”.That is, when it is within its undervoltage range.• Utility ConnectedThe White Utility connected LED illuminates when the powerswitching device is in a position such that when utility power isavailable, it is connected to the load.• Generator ConnectedThe Yellow Generator Connected LED illuminates when thepower switching device is in a position such that when generatorpower is available, it is connected to the load.2.3 Programming JumpersThe RTC-100 controller is programmable via five jumpers on thePC board. The jumper selections are discussed in Section 4,Programming.Figure 1. RTC-100 Connectors and Programming Jumpers.2.4 Input/Output ConnectorsLocated along the bottom of the RTC-100 are connectors J1, J2,and J3. J1 provides board control power and voltage monitoringfor both the Utility and Generator sources. J2 and J3 provide loadcurrent information that is used for the active load control portion ofthe RTC-100. Along the side of the controller is connector J5. Thisconnector is currently reserved for future use. Connectors J6, J7,J8 and J9 are located along the top of the controller. J6 is used forcommunication to the RLC-100 load control board. J7 provides aform C relay with dry contacts that is used for 2 wire engine startschemes. Connector J8 contains 2 contacts for the active load con-trol portion of the controller. These contacts are discussed in section4.1.4. J9 provides connection for the control input and the transferswitch control outputs.2.5 Transfer to Generator InputThe RTC-100 has a control input signal that will initiate a transferfrom Utility to Generator. The input requires an external contact clo-sure to the Transfer to Generator input (J9, pins 1 and 2).The Control Input “State” definitions are as follows.Connected - When the input is shorted by an external contact orconnection.Unconnected - When the input is NOT shorted by an external con-tact or connection.The Transfer to Generator Input operations are defined as follows.When this input (J9, pins 1 and 2) is in the “Connected” state,the RTC-100 will initiate a transfer from Utility to Generator. TheGenerator will be automatically started. After the Generatorbecomes available, TDNE will time out before the transfer toGenerator takes place. Re-transfer will occur when the external con-tact is opened or under a failsafe condition.2.6 Output ConnectionsThe RTC-100 output connections are divided into two categories:• Customer Connections• Transfer Operation Connections.2.6.1 Customer ConnectionsLoad Shed ContactsThere are two sets of load shed contacts for customer use on con-nector J8, Load Shed Contacts #1 and Load Shed Contacts #2. Bothsets of contacts are closed when the transfer switch is in the Utilityposition and both sets are automatically controlled when the transferswitch is in the Generator position. The output contacts are rated for5 amps @ 250 VAC. The DC rating is 5 amps @ 30 VDC. See Section4.1.4 for more information2.6.2 Transfer Operation ConnectionsThe Utility Close and Gen Close outputs are factory wired to operatethe transfer switch. The relay contacts for each output are rated for5 amps @ 250 VAC. The DC rating is 5 amps @ 30 VDC.Utility Close OutputsThis output is used to transfer to Utility. The Utility Close Outputsare on J9, pins 5 and 6.Generator Close OutputsThis output is used to transfer to Generator. The Generator CloseOutputs are on J9, pins 3 and 4.