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Festo — MSE6-C2M — 2022-08b
Parameterisation
2. Set the parameters for the automatic pressure control function and blocking function.
Additional tolerances and safety additions must be taken into account during parameterisation.
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The module must be in the user-controlled blocking operating mode, Am.0.1 = 0, for parameter-
isation and the automatic shut-off valve controller must be deactivated, Am.0.5 = 0.
This ensures that the Q_low-Timer is reset for activating the automatic blocking function and
the shut-off valve does not unintentionally switch to the blocking state.
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Set the auto-control delay time parameter, Pm.17-18. Set a higher value than the actual produc-
tion pause time to prevent unwanted blocking during production operation, e.g. to 10 min.
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Set the auto-control flow rate limit value parameter, Pm.19-20. The parameter value must be
greater than the maximum flow rate for production downtime than the minimum flow rate in
production operation.
In the example, a parameter value between 90 … 240l /min can be set.
3. Activate the automatic pressure control and blocking function.
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When switching to the automatic pressure control and blocking operation by setting the output,
Am.0.1 = 1, and reset of the Q_low-Timer reset function by Am.0.2 = 0 the parameterised flow
rate monitoring by the Q_low-Timer is started.
The Q_low-Timer status is indicated at input Em.3.4-3.5. When Q_low-Timer has expired, the
automatic pressure control and blocking function with blocking of the supply air and subse-
quent regulation to the auto standby setpoint pressure is set if the auto-enable control output
is set, Am.0.5 = 1. This means that unexpected blocking of the supply air and reduction of the
outlet pressure when Q_low-Timer expires is prevented.
If the flow rate of the system exceeds the set auto-control flow rate limit value when output
Am.0.5 is not yet set, the Q_low-Timer is reset. The auto-control delay time restarts. It con-
tinues to regulate to the auto normal setpoint pressure, even if the auto-enable output control
is set, Am.0.5 = 1.
As soon as the module is in the AUTO_SHUTOFF state, shut-off state, or AUTO_STANDBY state,
control to pressure setpoint auto standby, only the user can exit this state.
4. Switch the module from the blocking state, AUTO_SHUTOFF, or auto standby pressure regulation
state, AUTO_STANDBY, back to the auto normal pressure regulation state.
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The Q_low-Timer status is UP, Em.3.4-3.5 = 2, and the module status is AUTO_SHUTOFF,
Em.3.8-3.11 = 11, or AUTO_STANDBY, Em.3.8-3.11 = 12.
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To switch to the AUTO_NORMAL auto normal pressure regulation state, Em.3.8-3.11 = 8, the
Q_low-Timer reset output must be reset first, Am.0.2 = 1, and then reset again, Am.0.2 = 0.
5. Check the set values over multiple production cycles.
Changes to system parameters can lead to a change in the determined production data.
• If necessary, check whether the set parameter values are still valid.
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The current module status at any time can be tracked in input Em.3.8-3.11. The status of the
Q_low-Timers in input Em.3.4-3.5 and the switching position of the shut-off valve in input Em.3.0.
