Siemens A1 ユーザーズマニュアル
Simple Applications
International English
22
MICROMASTER Applications Handbook
7
6
5
8
MICROMASTER
DIN 1
+24 V Output
DIN 2
DIN 3
Digital
Inputs
Figure 5-2
Using all the Digital Inputs
5.3
Selecting and Using the Fixed Frequencies
The digital inputs can be used to select fixed frequencies. Set parameter P1000 to
3 (select fixed frequency operation), and set parameters P0701, 2,and 3 to 16.
These switches can now be used to select fixed frequencies 1, 2 and 3 (default
values 0, 5 and 10 Hz). By setting P0701 etc. to 16, a ‘RUN’ signal is automatically
generated when a fixed frequency is selected.
3 (select fixed frequency operation), and set parameters P0701, 2,and 3 to 16.
These switches can now be used to select fixed frequencies 1, 2 and 3 (default
values 0, 5 and 10 Hz). By setting P0701 etc. to 16, a ‘RUN’ signal is automatically
generated when a fixed frequency is selected.
Closing more than one switch will simply add the two fixed frequencies together.
Other fixed frequencies (including reverse – negative – values) can be selected by
changing the value of parameters P1001, 2, 3 etc.
changing the value of parameters P1001, 2, 3 etc.
5.3.1
More Complex Uses of Fixed frequencies
If the corresponding digital inputs are reprogrammed from 16 to 17, the inputs will
selected fixed frequencies in binary coding, allowing the three inputs to select up to
8 digital inputs. However, a separate ‘ON’ command will be required
selected fixed frequencies in binary coding, allowing the three inputs to select up to
8 digital inputs. However, a separate ‘ON’ command will be required
The fixed frequencies can be added or scaled to the fixed frequencies by changing
parameter P1000 and P1071.
parameter P1000 and P1071.
Please consult the Parameter List for additional details.
5.4
Using other digital input features
All the digital inputs have many different functions, which can be programmed by
setting parameters P0701-3, The analog input can even be programmed as a
digital input using parameter P0704. Simple uses include:
setting parameters P0701-3, The analog input can even be programmed as a
digital input using parameter P0704. Simple uses include:
001 Run
right
002 Run
left
012 Reverse
010 Jog
010 Jog
right.
Other settings that may prove useful:
016 Select fixed frequency + on (see above)
012 Fault
012 Fault
reset
029 External
trip.