Festo — MSE6-E2M — 2022-08d
Functions
11
Operational functions
The response of the energy efficiency module can be influenced by accessing the internal parame-
ters, e.g.:
–
Diagnostic behaviour by enabling maskable diagnostic messages.
–
Specification of the units and the measuring interval.
–
Setting of critical limits.
The energy efficiency module is delivered with preset parameters
5.1
Measurement functions and control function
The following sections provide an overview of the individual measurement and control functions of the
energy efficiency module and describe the setting options and their influencing variables.
Individual functions and their behaviour can be controlled using the outputs and parameters. Meas-
urement and status signals are available as input values. The diagnostic information is made available
as a combination of the error number and their respective channel allocation.
For the following designations of inputs and outputs and parameters, m is the module number that is
based on the address position of the energy efficiency module in the overall CPX system and has the
fixed value m = 1.
5.1.1
Flow rate
Input signal
The measured flow rate is prepared according to the set parameters of flow rate, Pm.8.2-8.3, and unit
flow rate, Pm.8.6-8.7, processed and provided as input signal, Em.0.
Limit value monitoring
A comparator is used to compare the measured flow rate value with the upper flow rate limit value
parameter, Pm.11-12. When the time set in the monitor limit values startup, Pm.7, parameter has
elapsed and limit value monitoring is activated, Pm.0.6, the appropriate error/diagnostic message is
output if a limit value is exceeded.
Monitoring of parameters
The unit flow rate, Pm.8.2-8.3, standard flow rate, Pm.8.6-8.7, upper flow rate limit value, Pm.11-12,
limit value monitoring startup, Pm.7, parameters are checked for permissible values when input.
In case of error, the appropriate error message is output if parameterisation error monitoring is
activated, Pm.0.7.
Sensor monitoring
If there is a sensor error, the appropriate error message, which cannot be deactivated, is output.
