TECO F33 Series, Инструкция по эксплуатации, Страница: 38 / 192

Main Features 35
7.1.6 Preset references
The VSD is able to select fixed speeds via the control of
digital inputs. This can be used for situations where the
required motor speed needs to be adapted to fixed val-
ues, according to certain process conditions. Up to 7
preset references can be set for each parameter set,
which can be selected via all digital inputs that are set
to Preset Ctrl1, Preset Ctrl2 or Preset Ctrl3. The amount
digital inputs used that are set to Preset Ctrl deter-
mines the number of Preset References available;
using 1 input gives 2 speeds, using 2 inputs gives 4
speeds and using 3 inputs gives 8 speeds.
Example
The use of four fixed speeds, at 50 / 100 / 300 / 800
rpm, requires the following settings:
• Set DigIn 5 as first selection input; set [525] to Pre-
set Ctrl1.
• Set DigIn 6 as second selection input; set [526] to
Preset Ctrl2.
• Set menu [341], Min Speed to 50 rpm.
• Set menu [362], Preset Ref 1 to 100 rpm.
• Set menu [363], Preset Ref 2 to 300 rpm.
• Set menu [364], Preset Ref 3 to 800 rpm.
With these settings, the VSD switched on and a RUN
command given, the speed will be:
• 50 rpm, when both DigIn 5 and DigIn 6 are low.
• 100 rpm, when DigIn 5 is high and DigIn 6 is low.
• 300 rpm, when DigIn 5 is low and DigIn 6 is high.
• 800 rpm, when both DigIn 5 and DigIn 6 are high.
7.2 Remote control functions
Operation of the Run/Stop/Enable/Reset functions
As default, all the run/stop/reset related commands
are programmed for remote operation via the inputs on
the terminal strip (terminals 1-22) on the control board.
With the function Run/Stp Ctrl [215] and Reset Control
[216], this can be selected for keyboard or serial com-
munication control.
Default settings of the Run/Stop/
Enable/Reset functions
The default settings are shown in Fig. 38. In this exam-
ple the VSD is started and stopped with DigIn 2 and a
reset after trip can be given with DigIn 8.
Fig. 38 Default setting Run/Reset commands
The inputs are default set for level-control. The rotation
is determined by the setting of the digital inputs.
Enable and Stop functions
Both functions can be used separately or simultane-
ously. The choice of which function is to be used
depends on the application and the control mode of the
inputs (Level/Edge [21A]).
Enable
Input must be active (HI) to allow any Run signal. If the
input is made LOW, the output of the VSD is immedi-
ately disabled and the motor will coast.
Stop
If the input is low then the VSD will stop according to
the selected stop mode set in menu [33B] Stop Mode.
Fig. 39 shows the function of the Enable and the Stop
input and the Stop Mode=Decel [33B].
To run the input must be high.
NOTE: The examples in this paragraph do not cover all
possibilities. Only the most relevant combinations are
given. The starting point is always the default setting
(factory) of the VSD.
NOTE: In Edge mode, at least one digital input must be
programmed to “stop”, because the Run commands are
otherwise only able to start the VSD.
CAUTION: If the Enable function is not
programmed to a digital input, it is considered
to be active internally.
NOTE: Stop Mode=Coast [33B] will give the same
behaviour as the Enable input.
X
X1
1
12
22
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RunR
Reset
+24 V
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