Festo MSE6-C2M, Operating Instruction

Page: 16 / 104

16 Festo — MSE6-C2M — 2022-08b
Functions
Unit
flow rate
Pm.8.2-8.3
Flow rate
standard
Pm.8.6-8.7
Upper
critical limit
flow rate
Pm.11-12
Monitoring
of
critical limit
startup
Pm.7
Monitoring
of
critical limits
Pm.0.6
Monitoring
of
parameter
Pm.0.7
Data
check
Scaling Flow
rate
sensor
sensor
error
Data
check
Data
check
Data
check
Comparator
Diagnostics, maskable
FN25, Em.0: parameterisation error upp. critical limit
FN29, Em.0: error in parameterisation
Input
Em.0: flow rate
Diagnostics, maskable
FN10, Em.0: upp. critical limit exceeded
Diagnostics, not maskable
FN15, Em.0: sensor defective
Flow rate
Fig. 5: Block diagram of the flow rate function
5.1.2 Consumption
Input signals
The consumption measurement is based on the prepared flow rate value. Depending on the unit
consumption, Pm.8.4-8.5, and standard flow rate, Pm.8.6-8.7, parameters, the consumption values
are processed in 2 independent channels and provided as input signals in the 16-bit and 32-bit data
format:
–
Consumption V0, 16 bit: input Em.1 and selectable inputs Em.5 and/or Em.6
–
Consumption V0, 32 bit: selectable inputs Em.5-6
–
Consumption V1, 16 bit: selectable inputs Em.5 and/or Em.6
–
Consumption V1, 32 bit: selectable inputs Em.5-6
There is also a continuous consumption measurement which, after a certain, unit-dependent con-
sumption, generates a logic one measurement impulse with a duration of 100 ms. For the consump-
tion units l and m³, the consumption value is 200 l. For the consumption unit scf, the consumption
value is 10 scf.
The measuring pulse is provided at the measuring pulse consumption VC, Em.3.7, input. In addition,
the signal is output at electrical output 0 if the selection DO0 signal parameter has the value
Pm.28.3 = 1.
If there is a change to the unit flow rate or standard flow rate parameter values, the measured
consumption values are reset to the value 0.
If there is a change to the unit consumption parameter value, the current measured consumption
values are saved and converted to the new consumption unit.
User-controlled consumption measurement
The 2-channel consumption measurement is controlled using two data bits in the output word for
module control, Am.0. The respective consumption measurement is started, continued or stopped
with the consumption V0 Run, Am.0.12, or consumption V1 Run, Am.0.14, outputs. The respective
consumption measurement values can be reset to the value 0 via the consumption V0 Reset, Am.0.13,
or consumption V1 Reset, Am.0.15, outputs.