Simple Applications | International English |
MICROMASTER
Digital
Inputs
5DIN 1
6DIN 2
7DIN 3
8+24 V Output
Figure
5.3Selecting 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.
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.
5.3.1More 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
The fixed frequencies can be added or scaled to the fixed frequencies by changing parameter P1000 and P1071.
Please consult the Parameter List for additional details.
5.4Using other digital input features
All the digital inputs have many different functions, which can be programmed by setting parameters
001Run right
002Run left
012Reverse
010Jog right.
Other settings that may prove useful:
016Select fixed frequency + on (see above)
012Fault reset
029External trip.
22 | MICROMASTER Applications Handbook |