Fault Input

The Fault Input is a purpose-specific input and is intended to be connected to a drive amplifier or other source for a safety interlock. Using the Fault Input is optional.

When the Fault input is active, the Fault Status bit will turn on and the Fault Error bit will latch on. This will cause a halt if the Auto Stops are configured to do so, and the axis is not in the Direct Output state.

The modules listed below have a Fault Input.

RMC70	RMC150
MA AA QA	Quad (Q)

Configuring the Fault Input

The user can select the active state of this input with the Fault Input Polarity parameter. The parameter has the following two choices:

• Active High - When the voltage applied across the Fault Input is greater than 6 volts, the Fault input is active.

• Active Low - When the voltage applied across the Fault Input is less than 6 volts, the Fault input is active.

Wiring

The RMC70 Fault input is compatible with signal levels ranging from 12 V to 24 V. The RMC70 Fault Input turns on at 6.5 V. The polarity of the voltage is unimportant.

The RMC150 Fault input is compatible with signal levels ranging from 5 V to 24 V. The Fault Input turns on at 3.2 V.

Fault Input Wiring

The following are some example Fault input wiring diagrams:

 

Generic:

From Open Collector Output:

 

Additional Uses

The Fault Input can also be used for the following:

• SSI homing (RMC70 Only)

• Physical Limit Inputs

Advanced

In addition to the uses described above, the Fault Input can be used as a general discrete input. This requires that the Auto Stop for the Fault Input error bit be set to Status Only so that it does not cause the axis to halt.

Specifications

For specifications, refer to the topic of the specific module containing the Fault Input.

RMC70	RMC150
MA AA QA	Quad (Q)

 

See Also

Enable Output

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