GM4000A™ Switch Machine - Alstom

General Description1.5. UNIVERSAL FEATURES1.5.1. Power SupplyThe controller has a universal power supply. The GM4000A motor operates at a powervoltage range of 16 to 160 VDC or 85 to 140 VAC. There are no jumpers or specialconfigurations needed for the controller to work over these wide voltage ranges.1.5.2. SpeedThe system has two speed settings available if the supply voltage is above 110 volts(DC or AC). Speed setting is selected by configuring the wire harness connection to thecontroller.The controller sets the motor RPM to allow the switch machine to throw against anAREMA specified 2500 lbs. (1133.98 kg) load in a nominal 4 or 15 seconds. At 24 VDCthe switch machine throws against the AREMA specified 2500 lbs (1133.98 kg) load in anominal 24 seconds. Actual switch speed is dependent on several variables includingload and operating temperatures.1.5.3. CurrentThe system has two current settings. High-current mode allows the machine to push upto 4000 lbs (1814.37 kg). Low-current mode allows the machine to push up to 2500 lbs(1133.98 kg). External fuses for both applications must be rated at 20 amps.NOTEFor high current mode, the controller detects overload to disrupt thecurrent to motor when the machine operates against an obstruction.For low current mode an external overload relay or timer must be installedto disrupt the current to motor when the machine operates against anobstruction.The optimal installation is the high-voltage, high-current mode since this provides thesystem with the most output force and allows for speed configuration. The universalpower supply allows the system to run at high-voltage with the maximum force out andhave a low-voltage battery backup. A low-voltage battery backup could supply aminimum of 2500 lbs (1133.98 kg) load requirement.1.5.4. Power InputThe controller runs off all input configurations. It runs in 2-wire, 3-wire, 4-wire, or 5-wiremode depending on the controller wiring configuration.P2496, Rev. 6, Jul/11 1-6 Alstom Signaling Inc.