System Operating Characteristics | Miller Electric ProHeat 35

6-9. System Operating Characteristics

The power source delivers a high-frequency alternating current output that energizes the coil creating the magnetic field used to heat the workpiece. The power source output characteristics are a function of the configuration, type and number of coils used as shown in the following table:

Table 6-1. Power Source Output Characteristics

	Output Type	Maximum Amperage	Maximum Voltage	Frequency Range

		250 A per output for 15 minutes.
		After 15 minutes, power steps
	Air Cooled Single and Dual	down to limit current to 150 am-	700 V	5 − 25.7 kHz
	Air Cooled Single and Dual	peres per output for continuous
		operation.

		See Note 1	700 V	25.7 − 30 kHz

	Single Liquid Cooled	350 A	700 V	5 − 20 kHz

		See Note 2	700 V	20 − 30 kHz
		See Note 2	700 V	20 − 30 kHz

	Dual Liquid Cooled	350 A per output/700 A total	700 V	5 − 20 kHz

		See Note 2	700 V	20 − 30 kHz
		See Note 2	700 V	20 − 30 kHz

	300
			Air Cooled Output
	250
Per Output	200
Per Output
Amperage	150
Amperage	100
Max	100
Max
	50
	0	5		25.7	30
		5	Frequency (KHz)	25.7	30
			Frequency (KHz)

.Note 1: In the frequency range

of 25.7 to 30 KHz, the maxi- mum output amperage de- creases linearly from 250 down to 175 amperes per output. Re- gardless of frequency, after 15 minutes the maximum output is reduced to 150 amperes per output.

	400		Liquid Cooled Output
			Liquid Cooled Output
	350
Output	300
Output	250
Per
Max Amperage	200
	150
	100
	100
	50
	0	5		20	30
		5	Frequency (KHz)	20	30
			Frequency (KHz)

.Note 2: In the frequency range

of 20 to 30 KHz, the maximum output decreases linearly from 350 down to 175 amperes per output.

OM-222 166 Page 37

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Miller Electric ProHeat 35 manual System Operating Characteristics, Power Source Output Characteristics, Air Cooled Output

Contents

Description OM-222 166K 2007−11 ProcessesFile Induction Heating From Miller to You Table of Contents EMF Information − MaintenanceRoutine Maintenance Blowing Out Inside Of Unit Limit Conditions Limit Condition Codes Fault Conditions Standards DirectivesDecstat1/07 Page Fumes and Gases can be hazardous Symbol UsageInduction Heating Hazards Electric Shock can kill California Proposition 65 Warnings About Implanted Medical Devices Principal Safety Standards EMF Information LES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UNE Décharge Électrique peut entraîner la mort DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLE Chauffage PAR Induction peut provoquer des brûlures LA Chute DE L’APPAREIL peut blesser Principales normes de sécurité Information EMF Proposition californienne 65 AvertissementsEn ce qui concerne les implants médicaux − Definitions Kill Shown by the symbolsPower before working on Are possible hazards as Weee Label For Products Sold Within The EU Rating Label For CE Products I1max − InstallationSymbols And Definitions Specifications Movement Location And Airflow Do not move or operate unit where it could tipSelecting a Location Tipping Min Grounding Conductor Size In AWG Electrical Service GuidePhase Input Voltage 50 Hz Three GND/PE Earth Ground Connecting 3-Phase Input Power For 460/575 Volt ModelsWelding Power Source Input Power Connections Disconnect Device Input Power Connections Connecting 3-Phase Input Power For 400/460 Volt Models Power Source Output Connections Remote 14 Socket Information Remote 14 Receptacle RC14 Information and ConnectionsSocket Socket Information Unused Temperature Recorder Socket InformationSignal Common Socket No Socket Information Workpiece Use handle to place magnet on the workpiece Secondary Insulation ProtectionReceptacles Plug Handle Magnet Locating Thermocouples Volt AC Duplex Receptacle And Supplementary Protector Other end is fitted with a 2-pin type K connector Attaching Welded Thermocouples Do not weld thermocouples while connected to power source Placing Temperature Probe Using Contact Thermocouples Controls − Components and Controls System Description − Setup and OperationSafety Equipment Power Source/System Setup OM-222 166 Programming Temperature-Based ControlMode....... Preheat Control TC Temperature Soak Time Decrease button to change the value to the desired setting Pwht Post-Weld Heat Treat Bake-Out Custom Program Soak Parameters 600 Custom ProgramEnd Type.......Step Number OM-222 166 Ramp Temperature 600 Ramp Rate 600 /Hr End Function SoakSoak Function Number Typical 5-Segment Custom Program Manual ControlSoak at 1250 degrees F for a period Preheat, Bake-Out And Pwht Run Status Screen Temperature Based ControlRun Status TC5 Target Temp −−−− TC6 Countdown.. −−−−−− Cooler cannot be turned off while output is on Power TC5 Current TC6 Voltage Frequency KHzParameters Cooler Real-Time Operation Must be running to enter Hold modeProgram run is initiated, the Run Button. a change of program parameters Liquid Cooled Output System Operating CharacteristicsPower Source Output Characteristics Air Cooled Output Before maintaining − MaintenanceRoutine Maintenance Disconnect power Servicing Hazards − Safety Precautions for Servicing California Proposition 65 Warnings Operator Interface Indicators − Diagnostics & Troubleshooting Limit Condition Additional Information Limit ConditionsLimit Condition Codes Run Status Fault Condition Codes Fault ConditionsFault Condition Additional Information Off Cable1 LQD DIAG1 OutI1 Cable2 LQD OutI2 ClntFR 0.75 GPM System Diagnostic ScreensClrSts Flowing VBus Therm1Therm2 Therm3 Removing Wrapper and Measuring Input Capacitor Voltage Turn Off welding power source, and disconnect input powerTools Needed 16, 3/8 Blowing Out Inside Of Unit Material Thickness Reference Chart Circuit Diagram − Electrical Diagram 218 057-G See Figure 11-313 11-2 − Parts List Front Panel Rear Panel Base w/Components Top Windtunnel Capacitor Assembly Right Windtunnel 229 Right Windtunnel 400 V Model Only 208 Left Windtunnel PLG14 10. Hermaphroditic Blank Plug Assy SOCKET/WRENCH Selection Table Standard Metric OM-222 166 Your distributor also gives ServiceSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact