38 Main Features Emotron AB 01-3694-01r2
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]).
Enable
Input must be active (HI) to allow any Run signal. If the
input is made LOW, the output of the VSD is immediately
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. 36
shows the function of the Enable and the Stop input and the
Stop Mode=Decel [33B].
To run the input must be HI.
Fig. 36 Functionality of the Stop and Enable input
Reset and Autoreset operation
If the VSD is in Stop Mode due to a trip condition, the
VSD can be remotely reset by a pulse (“low” to “high” tran-
sition) on the Reset input, default on DigIn 4. Depending
on the selected control method, a restart takes place as fol-
lows:
Level-control
If the Run inputs remain in their position the VSD will start
immediately after the Reset command is given.
Edge-control
After the Reset command is given a new Run command
must be applied to start the VSD again.
Autoreset is enabled if the Reset input is continuously active.
The Autoreset functions are programmed in menu Autoreset
[250].
Run Inputs Level-controlled.
The inputs are set as default for level-control. This means
that an input is activated by making the input continuously
“High”. This method is commonly used if, for example,
PLCs are used to operate the VSD.
The examples given in this and the following paragraphs fol-
low the input selection shown in Fig. 37.
Fig. 37 Example of wiring for Run/Stop/Enable/Reset inputs
The Enable input must be continuously active in order to
accept any run-right or run-left command. If both RunR
and RunL inputs are active, then the VSD stops according
to the selected Stop Mode. Fig. 38 gives an example of a pos-
sible sequence.
NOTE: In the Edge mode, at least one digital input must
be programmed to “stop”, because the Run commands
are then 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: The Stop Mode=Coast [33B] will give the same
behaviour as the Enable input.
!
(06-F104_NG)
t
t
STOP
(STOP=DECEL)
OUTPUT
SPEED
ENABLE
OUTPUT
SPEED
(or if Spinstart is selected)
NOTE: If the control commands are programmed for
Keyboard control or Com, Autoreset is not possible.
CAUTION: Level-controlled inputs DO NOT
comply with the Machine Directive, if the inputs
are directly used to start and stop the machine.
!
X1
1
12
22
11
2
3
4
5
6
7
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9
10
13
14
15
16
17
18
19
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21
Stop
Reset
+24 V
RunL
RunR
Enable
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