Automatic State Machine Plc Functions - Siemens SINUMERIK 840D sl Ctrl-Energy System Manual

Ctrl-E Profiles
4.1 Commissioning the PLC for Ctrl-E Profiles
SINUMERIK 840D sl
In SINUMERIK 840D sl, "Ctrl+Energy" is integrated in the basic program (FB15). Data for each
energy-saving profile is saved in DB1000, which is supplied with the Toolbox.
SINUMERIK 828D
In SINUMERIK 828D, "Ctrl+Energy" is integrated in the PLC firmware. The data for each
energy-saving profile is saved in the DB9906, which is included in the Programming Tool 828D.
In the other versions, for the "basic program (FB15)" for 828D, "PLC firmware" applies.
Energy-saving profiles
The PLC supports 8 energy-saving profiles. After the relevant configured delay times have
expired, the energy-saving profiles are individually active. The total time up until the energy-
saving profile is activated is obtained from its activation time plus the prewarning time. During
the two time intervals, the selected signals, enabled using masking, are monitored for any
activity and the profile only becomes finally active when the signals are completely inactive.
Of course, when required OEMs can configure either one or both times with zero.
The energy-saving profile in the PLC is characterized by the following data:
● the maximum time for T1 – the activation time
● the maximum time for T2 – the prewarning limit time of the user
● the actual value for T1
● the actual value for T2
● masking of the signals to assume/exit the energy-saving state
The times have the units of seconds, are 16 bits wide and unsigned. A maximum time is
therefore approximately 18 hours.
Note
The time until the energy-saving profile has been finally activated is obtained by adding the
actual values of T1 and T2
The data for each energy-saving profile is saved in DB1000 for the 840Dsl and in DM9906 for
the 828D.
4.1.2

Automatic state machine PLC functions

The automatic state machine shows the functionality in the PLC.
The state transition "OFF" results in a change into the "Energy-saving state inactive" from
every other state. This corresponds to "waking up" the machine.
After the NCU powered up, every energy-saving profile in the state "Energy-saving state
inactive" and the actual values of the times T1 and T2 are set to the maximum values.
40
System Manual, 01/2015, 6FC5397-0EP40-5BA2
Ctrl-Energy