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3/2 RSe Series Safe Exhaust Double Valves Integration Guide
Feedback Monitoring (General)
The 3/2 RSe valve is equipped with feedback proximity sensors that must be monitored by the user’s external safety control &
monitoring system to detect any fault condition within the valve. Sensor feedback should always be opposite the solenoid actuating
signals. In other words, when the solenoids are energized, the sensor outputs should be off and when the solenoids are de-
energized, the sensor outputs should be on.
WARNING:
It is possible to operate at a cycle rate that could result in non-monitored operation. To prevent exceeding this rate,
ensure that the valve is de-actuated (both sensor outputs should be on) before attempting to energize the solenoids. Likewise,
ensure that the valve is actuated (both sensor outputs should be off) before attempting to de-energize the solenoids.
NOTE:
In the event of a stop signal from any safety system input, the safety system should immediately shut off the safety controller
outputs to the valve solenoids (as required by the application) regardless of the condition of the feedback sensors.
Refer to EN ISO13849-1 for Cat 3 vs Cat 4 monitoring.
Automatic RESET is not recommended by ROSS.
Valve Operation and General Feedback Monitoring Ladder Logic Example
Actuate
Signal
Sensor
A
Sensor
B
Safety
Stop
Signal
General
Feedback
Fault
Solenoids Energized
Solenoid A
Solenoids
Energized
Solenoids
De-energized
Sensor
B
Sensor
A
Actuate
Signal
< >
< >
< >
Solenoid B
< >
Solenoids De-energized
De-actuation
Fault
*
Actuation
Fault
*
Solenoids
De-energized
Sensor
A
EN
< >
< >
DN
TON
Timer On Delay
Actuation Timer
Timer Value = 250 msec
EN
< >
< >
DN
TON
Timer On Delay
De-actuation Timer
Timer Value = 250 msec
Sensor B
E-Stop Button
Safety Stop Signal
Reset
Door Interlook
Switch
**
< >
Safety Stop
Signal
*
Explained in the next sections.
**
Could be an Input from any Safety Device,
such as a light curtain.
Sensor
A
Solenoids
Energized
Solenoids
De-energized
General Feedback Fault
Reset
< >
General Feedback
Fault
Sensor
B
