■ Pressure control
─ Setpoint:
→ Via bus, if the activation bit has been set
→ Via parameters in the menu 5.4.2
Pressure control
→ Via AII1.02, if it has been set accordingly in the menu 5.5.1
Current signal AII1.02
─ Actual value:
→ Via bus, if the activation bit has been set
→ Via AII1.02, if
Current signal AII1.02 has been set in the 5.5.1 menu
and
Pressure control is selected in the 5.4.2 menu
→ p1, p2 gauge or vacuum pressure version, if
Pressure control is selected in the 5.4.2
menu
→ dp, if
Pressure control is selected in the 5.4.2 menu
■ External speed control
─ Setpoint:
→ Via bus, if the activation bit has been set
→ Via AII1.02, if
Current signal AII1.02 has been set in the 5.5.1 menu
■ External values control
─ Setpoint:
→ Via bus, if the activation bit has been set
→ Via parameters in the menu 5.4.3
External values control
─ Actual value:
→ Via AII1.02, if Current signal AII1.02 has been set in the 5.5.1 menu
Locking the operating modes:
■ The operating modes
Fixed speedand Pressure control may always be selected, irrespective
of the setting of the AII1.02 current signal
■ The
External speed control operating mode may only be selected when the AII1.02 external
analogue output is active and the variable type
Speed has been set
■ The
External values control operating mode can only be selected when the AII1.02 external
analogue input is active and the variable type
Other has been set. If the operating mode can
be selected, the menu 5.4.3
External values control will be displayed
■ Settings can only be made in the menu 5.5.1
Current signal AII1.02 when the signal is not be‐
ing used in the current operating mode.
8.6.1 Current signal AII1.02
The machine can be controlled by a current signal at the AII1.02 analogue input. This current sig‐
nal may represent the
Pressure, Speed and Other values. For the Other value, you can set signal
scale and its resolution.
Locking the AII1.02 current signal:
■ You can deactivate or modify AII1.02 only when the AII1.02 current input is not actually used in
a control mode.
─ Neither
External speed control nor External values control operating mode are set.
─
Pressure control and AII1.02 are not set as source.
Precondition Access level 2 is activated.
The operating mode is displayed.
The
Fixed speed or Pressure control mode is set in the 5.4 <Configuration – Operating modes>
menu.
8
Initial Start-up
8.6
Operating modes in frequency-controlled machines
No.: 901700 14 E
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 4.0.X
93
