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MAGNET_GENERAL_CATALOG
② ①③An example of integrating wires by use of a terminal boxTrouble?If your electromagnetic chuck failed, refer tothis page. Symptoms, possible causes andcorrective actions of two typical Chuck Mastersare presented here. Please follow theseinstructions prior to asking for repair orpurchasing parts.◇Residual holding power is large.◁ETurn the demagnetization adjust variable resistor to apoint where the maximum demagnetization effect canbe obtained.◇Holding power is weak.●Set the excitation voltage adjust variable resistorat the maximum.●If the holding power is still weak, the magnet beingused may not be adequate for the shape, materialor holding direction of workpieces.※Note: Since ES-M Series outputs a constant excitation voltage, it does not have the excitation voltage adjust variable resistor.EH-V305A ES-M305B■If the Chuck Master does not function properly, check it referring to the following table.※Note:EH-V305AES-M305B/103B Symptom Electromagneticchuck does nothold workpiece.Chuck Masterdoes notoutput voltage.Fuse blows.Demagnetizationis notperformed.Alarmindicator lamplights up.Check andCorrective ActionPower is not being supplied. ◁E◁ECheck the power source.Fuse has blown. ◁E◁ERemove the fuse from the fuseholder and replace it with a new one.Power source is exceedingthe rated voltage. ◁E◁ECheck the power source voltage and usethe power source at the rated voltage.Output voltage adjust variableresistor has been turned CCW fully. ◁E◁EAdjust the output voltage again.Wiring to electromagneticchuck has been brokenor shorted.◁E◁E●If measurement of resistance ofelectromagnetic chuck is ∁EΩ,wiring broken. If 0 Ω, wiring shorted.Insulation ofelectromagnetic chuckand its wiring is poor(ground)◁E◁E◁E●Disconnect the cord from the outputterminal of Chuck Master and measureinsulation resistance of electromagneticchuck. OK when it is above 5 MΩ. Ifbelow 5 MΩ, check wiring. If insulationof electromagnetic chuck is poor,please request for repair.Cause Symptom Electromagneticchuck does nothold workpiece.Fuse blows.Demagnetizationis notperformed.Check and Corrective ActionPower is not being supplied. ◁ECheck the power source.Fuse has blown. ◁ERemove the fuse from the fuse holder and replace it witha new one.Power source is exceedingthe rated voltage. ◁ECheck the power source voltage and use the powersource at the rated voltage.Wiring between ChuckMaster and electromagneticchuck is defective orelectromagnetic chuck isfaulty.◁E◁E●Disconnect the cord from the output terminal of ChuckM a s t e r a n d m e a s u r e i n s u l a t i o n r e s i s t a n c e o felectromagnetic chuck. OK when it is above 5 MΩ. Ifbelow 5 MΩ, check wiring. If insulation of electromagneticchuck is poor, please request for repair.CauseModel TB TERMINAL BOXOUT1OUT4 OUT3 OUT2 OUT1OUT2OUT3OUT4INPUTINPUTW 1W 2W 3 4-ρE.54-ρE.5175185100 1206911012015 1590N.P.1 2 E 1 2 EOUT1OUT2INPUTE！EEGroundE！EEGroundE！EEGroundE！EE① Electro Chuck Master② Terminal box③ Electromagnetic chucks connectedEApplicationEWhen several electromagnetic chucks are connected and areto be controlled together by one unit of the Chuck Master, aterminal box is required that integrates wires from the chucks.Terminal boxes for 2 circuits up to 10 circuits are available.※The number of “OUT Ein the above figures varies according to the number of branches.、EBEEPD/4PD〉、EBEEPC?10PC〉、En example of TB-2PD wiring〉［mmEEnE］Model Input Capacity No. ofOutputsDimensionsW? W? W?TB- 2PD30A2(See left-side fi gure)TB- 4PD 4TB- 6PC 6 280EE1.0EE266EE0.4EE250EE.84ETB- 8PC 8 330EE2.9EE316EE2.4EE300EE1.8ETB-10PC 10 380EE4.9EE366EE4.4EE350EE3.7ETB-6PC・Prior to checking/investigating causes, be sure to turn off the power and disconnect the powercable from the Chuck Master.・Measure the insulation resistance of the electromagnetic chuck with an insulation resistancetester. Be sure it is above 5 M at a test voltage of 500 VDC.・If the electromagnetic chuck failed, place an appropriate warning (such as attaching a tag of “Outof Order. Use Prohibited. E. If the cause cannot be identifi ed, please contact the manufacturer.TB20CHUCKCONTROLLERSPERMANENTMAGNETIC CHUCKSPERMANENTELECTROMAGNETIC CHUCKSBLOCKSFOR MCVACUUMCHUCKSPROMELTA*SYSTEMSINE BARCHUCKSHOLDINGTOOLSBLOCKS, HOLDERS,MINI CHUCKSMEASURINGTOOL HOLDERSMAGNETICTOOLSMAGNETICHOLDERSELECTROMAGNETICCHUCKS