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Hersteller: Hobart Welding Products Dateigröße: 1.47 mb Dateiname: o277v_hob.pdf Unterrichtssprache:

2 Jumper Links Move jumper links to match input voltage. Close access door, or go on to Section 3-13. Tools Needed: 2 1 Do not overtighten jumper link nuts. 230 VOLTS Ref. S-174 973-A 460 VOLTS 575 VOLTS 380 VOLTS 400 VOLTS 440 VOLTS Ref. S-174 975-A 220 VOLTS (FACTORY OPTION) 200 VOLTS Ref. S-174 976-A 230 VOLTS 460 VOLTS 3/8 in 3/8 in 380 VOLTS 520 VOLTS Ref. S-177 159 OM-277 Page 20 3-13. Connecting Input Power ST-800 103-B / Ref. ST-801 116 1 Input And Grounding Conductors See Section 3-11. 2 Line Disconnect Device See Section 3-11. 3 Reed Switch (Ground Current Sensor) (Optional) 4 Grounding Conductor If unit is equipped with optional ground current sensor, route grounding conductor through reed switch two times and connect to ground terminal. Close access door. 3/8 in 3/8 in IMPORTANT GND/ 3 PE Connect GND/PE Conductor First. Input Contactor L1 (U) L2 (V) L3 (W) L1 (U) L2 (V) L3 (W) 1 2 Tools Needed: 3 4 Connect GND/PE Conductor First. SECTION 4 – OPERATION 4-1. Controls (Non CE Models) Ref. ST-184 940 1 Process Selector Switch 2 Arc Force (Dig) Control Control increases SMAW short-circuit amperage which allows the operator to use a very short arc length without sticking the electrode. Set control at 0 for normal welding amperage. Turn clockwise to increase short-circuit amperage. 3 Hot Start Switch Turn switch On for SMAW, SAW, and CAC-A. Turn Off for GTAW welding. When set in On position, higher short-circuit amperage helps arc starting. After arc starts, the Amperage/Voltage control setting determines weld amperage. 4 Amperage/Voltage Adjustment Control When Process Selector switch is in the SMAW/GTAW position, turn control clockwise to increase amperage. Read amperage from outer scale of control. When Process Selector switch is in the GMAW position, turn control clockwise to increase voltage. Voltmeter value changes as control knob is turned. Control can be adjusted while welding. 5 Digital Meters With Process Selector switch in the SMAW/ GTAW position, digital meters will read 0 (zero) with contactor off. Digital meters will display actual output voltage and amperage with contactor on. With Process Selector switch in the GMAW position, voltmeter displays preset voltage with contactor off. Voltmeter and ammeter display actual output voltage and amperage with contactor on. 6 Power Switch With Indicator Light 7 High Temperature Shutdown Light 8 Remote Amperage/Voltage Control Switch For front panel control, place switch in Panel position. For remote control, place switch in Remote position, and connect remote device (see Section 3-10). 9 Output Switch (Contactor) For front panel control of output, place switch in Panel position. For remote control of output, place switch in Remote position, and connect remote device (see Section 3-10). Weld output studs are energized only when Output switch is in On position, or while welding. Turn Off power before connecting to remote device. 689 7 450 Amp Model Shown 4 52 31 OM-277 Page 21 4-2. Controls (CE Models) Ref. ST-184 938 1 Process Selector Switch 2 Arc Force (Dig) Control Control increases SMAW short-circuit amperage which allows the operator to use a very short arc length without sticking the electrode. Set control at 0 for normal welding amperage. Turn clockwise to increase short-circuit amperage. 3 Hot Start Switch Turn switch On for SMAW, SAW, and CAC-A. Turn Off for GTAW welding. When set in On position, higher short-circuit amperage helps arc starting. After arc starts, the Amperage/Voltage control setting determines weld amperage. 4 Amperage/Voltage Adjustment Control When Process Selector switch is in the SMAW/GTAW position, turn control clockwise to increase amperage. Read amperage from outer scale of control. When Process Selector switch is in the GMAW position, turn control clockwise to increase voltage. Voltmeter value changes as control knob is turned. Control can be adjusted while welding. 5 Digital Meters With Process Selector switch in the SMAW/ GTAW position, digital meters will read 0 (zero) with contactor off. Digital meters will display actual output voltage and amperage with contactor on. With Process Selector switch in the GMAW position, voltmeter displays preset voltage with contactor off. Voltmeter and ammeter display actual output voltage and amperage with contactor on. 6 Power Switch With Indicator Light 7 High Temperature Shutdown Light 8 Remote Amperage/Voltage Control Switch For front panel control, place switch in Panel position. For remote control, place switch in Remote position, and connect remote device (see Section 3-10). 9 Output Switch (Contactor) For front panel control of output, place switch in Panel position. For remote control of output, place switch in Remote position, and connect remote device (see Section 3-10). Weld output studs are energized only when Output switch is in On position, or while welding. Turn Off power before connecting to remote device. 68 4 52 3 9 1 7 300 Amp Model Shown OM-277 Page 22 OM-277...

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