Holding Brake

Overview

The holding brake in the motor has the task of holding the motor position when the power stage is disabled. The holding brake is not a safety function and not a service brake.

WARNING
	UNINTENDED EQUIPMENT OPERATION Verify that movements without braking effect cannot cause injuries or equipment damage. Verify the function of the holding brake at regular intervals. Do not use the holding brake as a service brake. Do not use the holding brake for safety-related purposes. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Releasing the holding brake can cause an unintended movement, for example, lowering of the load in the case of vertical axes.

WARNING
	UNINTENDED MOVEMENT Take appropriate measures to avoid damage caused by falling or lowering loads or other unintended movements. Verify that there are no persons or obstacles in the zone of operation when performing a test of the holding brake. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Applying the holding brake while the motor is running causes excessive wear and loss of the braking force.

WARNING
	LOSS OF BRAKING FORCE DUE TO WEAR OR HIGH TEMPERATURE Do not use the holding brake as a service brake. Do not exceed the maximum number of brake applications and the kinetic energy during braking of moving loads. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The times mentioned in the following apply when switching in the direct current circuit, when the motor is warm, and at the rated voltage. The disconnection time is the period from switching on the current to the dying out of the torque to 10% of the rated torque of the brake. The coupling time counts as the period from when the current is switched off to the attainment of the rated torque.

Technical Data of the Holding Brakes

Technical data of the holding brake of the ILM070:

Parameter	ILM070 1 P	ILM070 2 P	ILM070 3 P	Unit
Static holding torque at 120 °C	3.0	3.0	3.0	Nm
Coupling time	10	10	10	ms
Disconnection time	80	80	80	ms
Mass	0.28	0.28	0.28	kg
Moment of inertia	0.11	0.11	0.11	kgcm²

Technical data of the holding brake of the ILM100:

Parameter	ILM100 1 P	ILM100 2 P	ILM100 3 P	Unit
Static holding torque at 120 °C	5.5	5.5	9.0	Nm
Coupling time	30	30	25	ms
Disconnection time	70	70	90	ms
Mass	0.46	0.46	0.65	kg
Moment of inertia	0.49	0.49	0.78	kgcm²

Technical data of the holding brake of the ILM140:

Parameter	ILM140 1 M	ILM140 1 P	ILM140 2 P	Unit
Static holding torque at 120 °C	18.0	18.0	23.0	Nm
Coupling time	50	50	60	ms
Disconnection time	100	100	100	ms
Mass	1.06	1.06	1.29	kg
Moment of inertia	1.5	1.5	2.55	kgcm²