CG Drives & Automation 01-7492-01r1 Main Features 67
7.1.7 Reference priority
The active speed reference signal can be programmed from
several sources and functions. The table below shows the
priority of the different functions with regards to the speed
reference.
7.1.8 Preset references
The AC drive 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 values,
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 determines the number of Preset
References available; using 1 input gives 1 speed, using 2
inputs gives 3 speeds and using 3 inputs gives 7 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 Preset
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 AC drive 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
communication control.
7.2.1 Default settings of the Run/
Stop/Enable/Reset functions
The default settings are shown in fig. 76. In this example the
AC drive is started and stopped with DigIn 2 and a reset
after trip can be given with DigIn 8.
Fig. 76 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 simultaneously.
The choice of which function is to be used depends on the
application and the control mode of the inputs (Level/Edge
[21A]).
Table 28 Reference priority
Main Priority Ref. selection Priority
1. Jog, (menu [520], [348]) -
2. Reference selection,
(menu [214])
Remote
1. Preset
2. MotPot
3. AnIn
Keypad -
Com -
Option -
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 AC
drive.
NOTE: In Edge mode, at least one digital input
must be programmed to “stop”, because the Run
commands are only able to start the AC drive.
X1
1
12
22
11
A+
B-
2
3
4
5
6
7
8
9
10
13
14
15
16
17
18
19
20
21
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