Overview

Equipment

WARNING
	INSUFFICIENT AND/OR INEFFECTIVE SAFETY-RELATED FUNCTIONS Only connect equipment to the safety-related inputs and outputs that meets all requirements as per your risk assessment and that complies with all regulations, standards, and process definitions applicable to your machine/process. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The following equipment can be connected to the inputs and outputs of the safety module eSM:

Component	Detailed information
Emergency Stop actuator	Emergency Stop - General
Start/restart pushbutton	Start/Restart Signal - General
Selector switch for selecting the machine operating mode Setup Mode and the machine operating mode Automatic Mode	Selecting the Machine Operating Mode
Interlocking of the guard door, locking device	Guard Door with Locking Device
Guards such as guard doors or electro-sensitive protective equipment (for example, light curtains)	-
Enabling device for enabling movements in machine operating mode Setup Mode	Enabling Device
Acknowledge/reset pushbutton for guard door acknowledgement	Acknowledge/Reset Pushbutton
Contactors for switching of external loads (with forcibly guided contacts, if required)	-
Controller to request status and diagnostics information via the status outputs	Status Request via Status Outputs

NOTE: The term “guard” as used in the present document does not only refer to guard doors, but also to other guarding equipment such as light curtains, where applicable.

The following illustration shows the connection of the equipment mentioned above with an eSM terminal adapter. Depending on your application, less or different equipment may be connected. Wiring is also possible without an eSM terminal adapter.

Equipment connected via eSM terminal adapter:

Multiple Safety Modules eSM in Multi-Axis System Via eSM Terminal Adapter

Information on wiring of several safety modules eSM in a multi-axis system using an eSM terminal adapter:

Outputs CCM24V_OUT_A and CCM24V_OUT_B: These outputs (terminals CN6 and CN7) are internally connected to CN1.
Outputs RELAY_OUT_A_1 and RELAY_OUT_B_1 (for switching of external loads): These outputs (terminal CN6) are internally connected to CN1.
Outputs RELAY_OUT_A_2 and RELAY_OUT_B_2 (for switching of external loads): These outputs (terminal CN7) are internally connected to CN2.
Outputs AUXOUT1_1 and AUXOUT2_1: These outputs (terminal CN6) are internally connected to CN1.
Outputs AUXOUT1_2 and AUXOUT2_2: These outputs (terminal CN7) are internally connected to CN2.
Outputs AUXOUT1_3 and AUXOUT2_3: These outputs (terminal CN7) are internally connected to CN3.
Inputs and supply voltages are internally connected to the connections CN1 ... CN5.
Connect the first safety module eSM to CN1 of the eSM terminal adapter, the second safety module eSM to CN2, and so on.

If you want to chain the interlock signals (INTERLOCK_OUT connected to INTERLOCK_IN of the next safety module eSM) and if you use less than five safety modules eSM, install a "Connector with wire jumper for INTERLOCK signal" (available as an accessory, refer to Accessories and Spare Parts) in those slots in which no safety module eSM is connected. For example, if you use three safety modules eSM connected to CN1, CN2, and CN3, install the connectors at CN4 and CN5.

If you chain several safety modules eSM, set the parameter eSM_BaseSetting of the first (that is, the one connected to CN1) safety module eSM (input INTERLOCK_IN not connected, output INTERLOCK_OUT connected) to the value INTERLOCK_IN. If the output INTERLOCK_OUT of a safety module eSM is not connected, do not set the parameter eSM_BaseSetting of this safety module eSM to the value INTERLOCK_IN.

Flyback Diodes

The outputs of the safety module eSM provide integrated protection against inductive voltage. Additional flyback diodes can slow down the switching behavior of contactors. Refer to Digital Outputs for information on the maximum inductive load on the outputs.