Nissei Corporation


No.5 The braking time is long, The stopping precision is bad

Gearmotor, gearmotor with brake [Cause and countermeasure]

The braking time is long, The stopping precision is bad

Defect of the power source, wiring, or control (5.1)

Gearmotor, gearmotor with brake

Classification No.CauseCountermeasureInspection procedure and actionJudging criterion
5.1.1Defect of the operation of the electromagnetic switchReplacementCheck the continuity of the electromagnetic switch and the interphase voltage of the load sideReport the interphase voltage to Nissei and check whether it is within the allowable range
5.1.2Disconnection or connection defect of the brake lineConnect the wire securelyCheck continuity of the connected partThere is continuity of the connected part
5.1.3Defect of the circuit design or wiring of the brake circuitReview it and assembly the circuit securelyCheck whether the circuit is assembled as recommended by the manufacturerCircuit recommended in the catalog or instruction manual
5.1.4Defect of the SSR operation of the brake circuitReviewCheck the pressure resistance value of SSRIt is equivalent to or less than the pressure resistance value written on the surface of SSR
5.1.5Breakage of the rectifierReplacementContact the manufacturer to check the continuity of each terminal of the rectifierContact Nissei for the check method and check the appropriateness

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Defect of the brake (5.2)

Gearmotor, gearmotor with brake

Classification No.CauseCountermeasureInspection procedure and actionJudging criterion
5.2.1Defect of the capCap adjustmentCheck the gap between the armature and field with a thickness gaugeGap amount recommended in the catalog or instruction manual
5.2.2Burnout of the brake coilReplacementMeasure the internal resistance of the brakeContact Nissei for the internal resistance and check whether it it within the allowable range
5.2.3Jamming of a foreign matterDisassembly and cleaningCheck that the shaft moves smoothly when the power source is applied to the brake 
5.2.4Erroneous installation of the springReplacementContact NisseiContact Nissei and check that the braking torque is within the allowable range
5.2.5Input power source abnormalityInput the specified voltageCheck the brake input voltageReport the voltage to Nissei and check whether it is within the allowable range
5.2.6Oil is adhered to the brake liningDisassembly and cleaningRemove the oilContact Nissei and check that the braking torque is within the allowable range
5.2.7RustDisassembly and cleaningRemove the rustContact Nissei and check that the braking torque is within the allowable range

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Defect of the installation or couplings (5.3)

Gearmotor, gearmotor with brake

Classification No.CauseCountermeasureInspection procedure and actionJudging criterion
5.3.1The couplings spin freeFix the couplings with the shaftCheck whether the key or mounting screws are installed securelyThere is no relative sliding of the shaft connected with the output shaft by the couplings

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Defect of a load part or operating conditions (5.4)

Gearmotor, gearmotor with brake

Classification No.CauseCountermeasureInspection procedure and actionJudging criterion
5.4.1The inertia of the load is too largeRe-selectionCheck that it is equivalent to or less than the allowable inertia load valueIt is equivalent to or less than the allowable inertia load value written on the catalog
5.4.2Opened by manual openingStop the opened stateVisually check whether the manual opening device is workingThere is braking force if the power source is not applied.
Contact Nissei and check that the braking torque is within the allowable range

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