Stimmen - 4, Durchschnittliche Bewertung: 4.3 ( )

Hersteller: Miller Electric Dateigröße: 768.26 kb Dateiname: o188422f_mil.pdf Unterrichtssprache:

S-0007-D OM-188 422 Page 16 OM-188 422 Page 17 3-7. Remote 14 Receptacle Information Socket* Socket Information 24 VOLTS AC A 24 volts ac. Protected by circuit breaker CB2. B Contact closure to A completes 24 volts ac contactor control circuit. A J B K I 115 VOLTS AC I 115 volts ac. Protected by circuit breaker CB1. C L N H D M G J Contact closure to I completes 115 volts ac contactor control circuit. E F C Output to remote control; +10 volts dc in MIG mode. D Remote control circuit common. REMOTE OUTPUT CONTROL E 0 to +10 volts dc input command signal from remote control. M Mode select. N Remote inductance control. A/V AMPERAGE F Current feedback; +1 volt dc per 100 amperes. Ref. ST-802 260 VOLTAGE H Voltage feedback; +1 volt dc per 10 arc volts. G Circuit common for 24 and 115 volts ac circuits. GND K Chassis common. *The remaining sockets are not used. 3-8. 115 Volts AC Duplex Receptacle Ref. ST-801 524-A 1 115 V 7 A AC Receptacle Power is shared between duplex receptacle and Remote 14 receptacle (see Section 3-7). 2 Circuit Breaker CB1 3 Circuit Breaker CB2 CB1 protects 115 volts ac portion of duplex receptacle and Remote 14 receptacle from overload. CB2 protects 24 volts ac portion of Remote 14 receptacle from overload. Press button to reset breaker. 2 31 3-9. Electrical Service Guide Input Voltage 400 Input Amperes At Rated Output 31 Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes 45 Min Input Conductor Size in AWG/Kcmil 10 Max Recommended Input Conductor Length In Feet (Meters) 264 (80) Min Grounding Conductor Size in AWG/Kcmil 10 Reference: 1993 National Electrical Code (NEC). S-0092J OM-188 422 Page 18 3-10. Connecting Input Power ssb2.4* 1/94 – ST-801 523-B / ST-801 946 Tools Needed: 5/16 in Input Filter Board L1 =GND/PE Always connect grounding conductor first. Turn Off welding power source, and check voltage on input capacitors according to Section 5-3 before proceeding. Check input voltage available at site. Remove left side panel. 1 Input And Grounding Conductors See Section 3-9. Install ring terminals of proper size onto input conductors for connection to input filter board terminals (see illustration). 2 Line Disconnect Device Select type and size of overcurrent protection using Section 3-9. Connect input and grounding conductors to a deenergized line disconnect device. Reinstall left side panel. L1 2 L2 L3 1 L2 L3 OM-188 422 Page 19 SECTION 4 – OPERATION 4-1. Front Panel Controls 1 Power Switch The fan motor is thermostatically controlled and only runs when cooling is needed. 2 Voltmeter (see Section 4-2) 3 Ammeter (see Section 4-2) 4 V/A (Voltage/Amperage) Adjust Control 5 Voltage/Amperage Control Switch For front panel control, place switch in Panel position and use the V/A Adjust control. For remote control, make connections to Remote 14 receptacle, and place switch in Remote position. In most modes, remote control is a percent of the V/A Adjust control setting. Value selected on V/A Adjust is maximum available on remote. In the MIG mode, remote control provides full range of unit output regardless of V/A Adjust control setting. 6 Mode Switch The Mode switch setting determines both the process and output On/Off control (see Section 4-3). Source of control (panel or remote) for the amount of output is selected on the V/A Control switch. For Air Carbon Arc (CAC-A) cutting and gouging, place switch in the Stick position. For best results, place Inductance/Dig control in the maximum position. 7 Inductance/Dig Control Control adjusts Dig when the Stick or CC mode is selected on the Mode switch. When set towards minimum, short-circuit amperage at low arc voltage is the same as normal welding amperage. When set towards maximum, short-circuit amperage is increased at low arc voltage to assist with arc starts as well as reduce sticking while welding (see volt-ampere curves in Section 3-3). Select setting best suited for application. Control adjusts inductance when MIG position is selected on the Mode switch. Inductance determines the “wetness” of the weld puddle. When set towards maximum, “wetness” (puddle fluidity) increases. When Pulsed MIG, or one of the TIG modes is selected, this control is not functional. 2 3 4 7 ST-184 762-A 1 56 OM-188 422 Page 20 4-2. Meter Functions The meters display the actual weld output values for approximately three seconds after the arc is broken. NOTE Mode Meter Reading At Idle Lift-Arc Trigger Hold TIG (GTAW) V Blank A Preset Amps 85 TIG (GTAW) Blank V Preset Amps A 85 MIG (GMAW) Preset Volts V 24.5 Blank A Pulsed MIG (GMAW-P) Pulse Display V PPP Pulse Display A PPP Remote Control SMAW Blank V Preset Amps A 85 Panel Control SMAW Actual Volts (OCV) V 80.0 Preset Amps A 85 OM-188 422 Page 21 4-3. Mode Switch Settings The SMAW modes provide the Adaptive Hot Start. feature, which automatically increases the output amperage at the start of a weld should the start require it. This eliminates electrode sticking at arc start. NOTE Mode Output Control ...

Herunterladen

Geben Sie zwei Ziffern: