External Device Monitor (Edm) Output Signal - Omron R88D-KN01L-ECT-L User Manual

8 Safety Function
8-1-2

External Device Monitor (EDM) Output Signal

This is a monitor output signal that is used to monitor the status of safety input signals using an external
device.
Connect the EDM output signal to the monitoring terminal on a safety device, such as a safety controller
or a safety sensor.
Signal
Symbol
name
EDM EDM+
*1
output
EDM–
*1 This is not a safety output.
8-1-3 Relationship Between Safety Input Signals and EDM Output Signal
Normally when both safety inputs 1 and 2 are OFF, i.e., when the STO function is activated for both
safety input circuits, the EDM output is ON.
You can detect a failure of the safety input circuit and the EDM output circuit by monitoring all of the
following 4 signal states using an external device.
These are the two cases of errors:
• Both safety inputs 1 and 2 are OFF, but the EDM output circuit signal does not turn ON.
• Either or both safety inputs 1 and 2 are ON, but the EDM output circuit signal is ON.
Signal name
Safety input 1
Safety input 2
EDM output
The maximum delay time is 6 ms after the safety input signal is input until the EDM output signal is
output.
8 - 4
Pin No.
CN8-8 Monitor signal is output to detect malfunctioning
of the safety function.
CN8-7
Symbol Signal status
SF1 ON ON
SF2 ON OFF
EDM OFF OFF
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Description
OFF OFF
ON OFF
OFF ON
Control mode
Position Speed Force