Best Practices

General

At machine start-up, the connected drives are usually hidden from sight of the machine operator and cannot be monitored directly.

WARNING
	UNSUPERVISED MACHINE START-UP Only start the machine if there are no persons within the zone of operation of moving machine components. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Verify Connections

Step	Action
1	Verify all terminals, connectors, and other connections on all system components for correct and firm fit.
2	Only use robust connectors and secure fixings.
3	Verify the protective earth ground (24 Vdc PELV (Protective Extra Low Voltage) supply.
4	Verify the wiring of the safety function to the axes to avoid an interchange of the IEA and IEB inputs as well as the 24 V supply.
5	Use coded connectors (refer to chapter Information about Wiring) and perform a commissioning test (refer to chapter Commissioning).
6	Use only appropriate transport packaging to forward or return individual devices.

DANGER
	ELECTRIC SHOCK DUE TO INADEQUATE PROTECTIVE SEPARATION Only connect devices, electrical components, or lines to the signal voltage connectors of these products that feature a sufficient, protective separation from the connected circuits in accordance with the standards (IEC 61800-5-1: Adjustable speed electrical power drive systems - safety requirements). Failure to follow these instructions will result in death or serious injury.

DANGER

ELECTRIC SHOCK DUE TO INADEQUATE PROTECTIVE SEPARATION

Only connect devices, electrical components, or lines to the signal voltage connectors of these products that feature a sufficient, protective separation from the connected circuits in accordance with the standards (IEC 61800-5-1: Adjustable speed electrical power drive systems - safety requirements).

Failure to follow these instructions will result in death or serious injury.

External Forces

The defined safe state of the motor is the torque-free output shaft. If external forces act upon the output shaft, it will not necessarily maintain its position. In any case, the motor will coast to an unassisted stop. This coast down time depends on physical properties of the components used (such as weight, torque, friction, and so on), and additional measures such as mechanical brakes may be necessary to help prevent any hazard from materializing. If the torque-free defined safe state is inappropriate for your application where external forces may move the output shaft as determined by your risk assessment, implement other external safety-related measures.

WARNING
	UNINTENDED EQUIPMENT OPERATION Make certain that no hazards can arise for persons or material during the coast down period of the axis/machine. Do not enter the zone of operation during the coast down period. Ensure that no other persons can access the zone of operation during the coast down period. Use appropriate safety interlocks where personnel and/or equipment hazards exist. Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

UNINTENDED EQUIPMENT OPERATION

Make certain that no hazards can arise for persons or material during the coast down period of the axis/machine.
Do not enter the zone of operation during the coast down period.
Ensure that no other persons can access the zone of operation during the coast down period.
Use appropriate safety interlocks where personnel and/or equipment hazards exist.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Hanging and Pulling Loads

WARNING
	UNINTENDED AXIS MOVEMENT Do not use the internal holding brake as a safety-related measure. Only use certified external brakes as safety-related measures. Failure to follow these instructions can result in death, serious injury, or equipment damage.

If the suspension of hanging / pulling loads is a safety objective for the machine, then you can only achieve this objective by using an appropriate external brake as a safety-related measure.

NOTE: The drive does not provide its own safety-related output to connect an external brake to use as a safety-related measure.