Operating Instructions – MOVITRAC® B
77
5
Short description of important startup steps
Startup
MotionStudio/DBG60B) and when the operating conditions specified for the motor are
observed.
5.5.11 Specification of system limits
Minimum speed
(P301)
This speed is the lower limit that may not be exceeded even when zero is selected as
the setpoint. The minimum speed also applies when n
min
< n
start/stop
was set.
Maximum speed
(P302)
No setpoint greater than the value set here can be selected. If you set n
min
> n
max
, then
the value set in n
max
applies to the minimum speed and the maximum speed.
Speed ramps
(P13x)
The ramp times refer to a setpoint step change of
∆
n = 3000 rpm. Ramps t11/t21 up and
t11/t21 down are effective when the setpoint is changed. The stop ramp t13/t23 is in ef-
fect when the enable is withdrawn by pressing the STOP/RESET key or via the termi-
nals.
5.5.12 Activating the energy-saving function (P770)
The energy-saving function can be activated for the following operating modes: VFC /
VFC & FLYING START / V/f CHARACTERISTIC. During no-load operation, the power
consumption of the inverter can be reduced by up to 70%.
Energy can be saved when operating pumps, fans, conveyor belts, etc. In this proce-
dure, the magnetization of the asynchronous motor is controlled depending on the load
by adapting the voltage-frequency ratio; the motor is undermagnetized.
5.5.13 Activating the technology functions
In addition to the standard features, you can use the MOVITOOLS
®
MotionStudio appli-
cation module with the technology variant. The technology function is indicated by "0T"
at the end of the type designation or by "Unit variant: Technology" in the "Unit data" in
MOVITOOLS
®
MotionStudio.
The "Simple positioning" application module in combination with SEW built-in encoders
is currently used as a substitute for rapid/creep speed switchover via initiators.
Activation is also possible subsequently. In this case, the correct TAN must be entered
in MOVITOOLS
®
MotionStudio via the menus "Working with the unit" / "Technology ac-
tivation".
5.5.14 Settings for low motor speeds (P32x)
Use function
P320/P330 Automatic adjustment
for single-motor operation only. You can
use this function for all motors and control modes. The inverter calibrates the motor dur-
ing pre-magnetization and sets the parameter
P322/P332 IxR adjustment
. The values
are saved in volatile memory.
5.5.15 Determining the assignment of digital inputs (P60x)
For detailed information, refer to section "Parameter group 6.. Terminal assignment".
5.5.16 Setting the brake function (P73x)
MOVITRAC
®
B inverters are capable of controlling a brake installed on the motor. The
brake function acts on the digital output which has the assignment of the "/BRAKE" func-
tion (24 V = brake released). Use DO02 for the brake control system.
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Содержание Movitrac B
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