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HE 5750 Operating Instructions
#371627 Version 1.1
Parameter
Description
4.10 Pressure switch function
By using a pressure transmitter in a manifold, three functions (incl. their
combinations) can be selected.
‘Valve function’
-> After a valve has been triggered, the pressure must
fall below a certain value. If not, an error message is generated.
After closing the valve, the pressure must exceed a certain value. If not,
the isolation valve of the manifold is closed and an error message
generated.
The thresholds are defined by separate parameters.
‘Pressure’
-> before a valve has been triggered, the pressure in the
respective manifold must be above a certain value. If not, the valve is not
triggered and an error message is generated. The value is defined by a
separate parameter.
‘Pause Time optimisation’
-> The possibility to reduce the pause time
between two valve triggers when the pressure at the local manifold has
regenerated. The pause time in the above parameters is understood as
max. time that can be reduced by an early regeneration of the manifold
pressure. The threshold therefore is set with parameter 13.5 ‘Minimum
Pressure in Manifold’.
4.11 Manifold filling time
Monitoring of the pressure starts after the filling time of the manifold
ends, because the manifold needs a certain time after opening the
isolation valve to generate the operating pressure. If the filling time is
exceeded, a ‘Valve Does Not Close’ error is assumed.
4.12 System pressure on
The lead time after opening the central isolation valve and further
actions.
Triggers the central isolation valve
4.13 System pressure off
Follow-up time for closing the central isolation valve
4.14 Drain valves
Number of drain valves per valve Slave box.
0 = drain valves off
Valves of two manifolds can be connected to one valve box.
Connection sequence at the valve terminals with 2 manifolds:
Blowing valves manifold 1, blowing valves manifold 2, drain valve
manifold 1, drain valve manifold 2
4.15 Drain valve pulse
Opening period of a drain valve.
4.16 Drain valve pause
Pause to next activation of the same drain valve
4.17 Start / Stop function
The command mode from the process control (permanent signal, sensor
signal).
The condition of the controller is reported.
5 Parallel valves
The system can trigger 2 chambers at the same time. Each chamber
that should be triggered at the same time has its own parameter.
Condition: chambers to be triggered at the same time are not connected
to the same valve controller. Each chamber is only triggered once per
cycle.
Note!
A parametrised parallel cleaning can be temporarily
suppressed via the master controller interface!
5.1 Parallel valve / chamber
For systems with 2 slaves per chamber, the valves of one chamber can
be triggered simultaneously by both Slaves, and the valves within a
chamber can be cleaned in parallel. For this purpose, the first slave
must have precisely as many valves assigned to it or one more valve,
than are assigned to the second Slave (
See parameters 1.4 Valve on
1st Slave*).
If this assignment is not complied with, it is possible that not
all valves are cleaned.
5.2 Parallel chambers
With a continuous linking of the parallel chambers (parameter parallel
chambers 1...24) the maximum number of parallel chambers is limited.
