External Device Monitoring(Edm) - Parker P Series User Manual

state. It is not necessary to reset alarm separately since the "STO state" is not
an alarm state. The dynamic brake operates according to the dynamic brake
control mode setting [0x2012] for the STO state, the alarming state, and the
servo OFF state.

7.2 External Device Monitoring(EDM)

EDM is the monitor output signal for observing state of safety input signal with external device.
Connect EDM to external monitoring terminal on safety device, controller or sensor.
 Detecting EDM malfunction by using EDM signal
Possible to detect malfunctions of Safety input circuit and EDM output circuit when
monitoring 4 signals below.
There are 2 cases when it is defected.

When both STO 1 and 2 are OFF. Then, EDM output is not ON.

When either or both STO 1 and 2 are ON but EDM output is ON.
Signal name
STO1
STO2
EDM
Parker Hannifin
ON ON
ON OFF
OFF OFF
P series EtherCAT Drive User Guide
Functions
OFF
ON
OFF
OFF
OFF
ON
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