Configure digital inputs

Settings for digital inputs 1 ... 5.
 
Details
The digital inputs are used for control tasks. For this purpose, the digital inputs are available as selectable triggers for functions.
The following settings are possible for the digital inputs:
–
Debounce time ②
 
–
Inversion ③
 
Diagnostic parameters:
–
The logic status of the digital inputs is displayed in 0x60FD (P118.00).
 
 
Assertion level "HIGH active"
HIGH active (default setting)
–
Internally, the digital input terminals are set to LOW level via pull-down resistors.
 
–
The current flows from the current supply (e.g. terminal X3/24 V) through the contact to the digital input terminal (and internally via the pull-down resistor to GND).
 
–
If the contact is closed, the digital input is set to HIGH level and is thus HIGH active.
 
Connection plan (example):
 
Debounce time
To minimize interference pulses, a debounce time of 1 ms is set for all digital inputs. Via »EASY Starter«, the debounce time can be increased individually for each digital input to a maximum of 50 ms if necessary.
 
Inversion
Each digital input can be configured in such a way that the status pending at the terminal is logically inverted internally. This way, a closed contact, for instance, serves to deactivate an assigned function instead of activating it. Thus, the control of the inverter can be flexibly adapted to the requirements of the actual application.
 
Parameter
Address
Name / setting range / [default setting]
Information
0x2630:002
(P410.02)
Settings for digital inputs: Input function
(DI settings: Input function)
Input function of the digital terminals DI3 and DI4.
0
Digital input
DI3 = digital input
DI4 = digital input
0x2632:001
(P411.01)
Inversion of digital inputs: Digital input 1
(DI inversion: DI1 inversion)
Inversion of digital input 1
0
Not inverted
1
Inverted
0x2632:002
(P411.02)
Inversion of digital inputs: Digital input 2
(DI inversion: DI2 inversion)
Inversion of digital input 2
0
Not inverted
1
Inverted
0x2632:003
(P411.03)
Inversion of digital inputs: Digital input 3
(DI inversion: DI3 inversion)
Inversion of digital input 3
0
Not inverted
1
Inverted
0x2632:004
(P411.04)
Inversion of digital inputs: Digital input 4
(DI inversion: DI4 inversion)
Inversion of digital input 4
0
Not inverted
1
Inverted
0x2632:005
(P411.05)
Inversion of digital inputs: Digital input 5
(DI inversion: DI5 inversion)
Inversion of digital input 5
0
Not inverted
1
Inverted
0x2633:001
Digital input debounce time: Digital input 1
1 ... [1] ... 50 ms
Debounce time of digital input 1
0x2633:002
Digital input debounce time: Digital input 2
1 ... [1] ... 50 ms
Debounce time of digital input 2
0x2633:003
Digital input debounce time: Digital input 3
1 ... [1] ... 50 ms
Debounce time of digital input 3
0x2633:004
Digital input debounce time: Digital input 4
1 ... [1] ... 50 ms
Debounce time of digital input 4
0x2633:005
Digital input debounce time: Digital input 5
1 ... [1] ... 50 ms
Debounce time of digital input 5
 
Example: Activating two functions simultaneously via digital input 4
The principle of assigning triggers to functions also enables a digital input to be assigned to several functions. The wiring complexity is reduced since there is no necessity to interconnect several digital inputs.
If, for instance, the frequency preset 1 is to be selected via the digital input 4 and a change-over to the acceleration time 2 and deceleration time 2 is to take place at the same time, this can be easily realised by the following parameter setting:
Parameter
Designation
Setting for this example
0x2631:018 (P400.18)
Activate preset (bit 0)
Digital input 4 [14]
0x2631:039 (P400.39)
Activate ramp 2
Digital input 4 [14]
In order to achieve the desired behaviour, the digital input 4 must not be assigned to any further functions!