If you want to use current measuring, connect the other end of the load to the feedback pin.
Output (PWM/DO)
This type of pin is a current sourcing output with a pull-down resistor
These outputs have integrated protection features (overload, overcurrent)
These outputs are capable to generate pulse width modulated (PWM) output signals.
When used as an output, the status feature indicates the output FET's state
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If you want to use current measuring, connect the other end of the load to the feedback pin.
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It is recommended to use the function blocks in DigitalOutputDiagnostics library to protect and diagnose outputs when used as digital outputs. For more information, refer to Epec Programming and Libraries Manual. |
Input (DI)
This pin can be used as a digital input (DI)
This pin can be used also with PNP-type sensors
A pin of this type can also be used as an input by using the output state monitoring feature.
In those cases the output functionality of the pin must be kept in off state.
It must be taken care in system design that the output unintentionally switching to on state causes no harm to the system.
It’s highly recommended to use closed loop connections when the output pin is used as input. By keeping this simple principle in your mind you will avoid many unknown problems later on.
Electrical characteristics
Symbol |
Parameter |
Conditions |
Min |
Max |
Units |
RO |
Output Resistance |
Output On |
|
0,2 |
Ω |
IO |
Output Current |
Output On |
0 |
3 |
A |
Io-lim |
Internal current limitation |
Output On (Note 1, 2) |
typ. 12 |
A |
|
fPWM |
PWM Frequency |
|
10 |
3000 |
Hz |
DutyPWM |
Duty Cycle |
(Note 3) |
0 |
100,0 |
% |
ResPWM |
PWM Resolution |
|
|
0,1 |
% |
Digital status input |
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RI |
Input Resistance |
Output Off; Referenced to GND |
typ. 10 |
kΩ |
|
VIH |
Input High Voltage |
Output Off (Note 6) |
4,1 |
Uin |
V |
VIL |
Input Low Voltage |
Output Off |
-0,5 |
3,3 |
V |
fI |
Input frequency (digital input) |
50% duty cycle (Note 3, 4) |
|
1/ 2tC |
Hz |
tI |
Digital Status Input Pulse Width |
(Note 4, 5) |
> tC |
ms |
|
CI |
Input pin capacitance |
|
typ. 1 |
nF |
|
Note 1: Current limit for short circuit protection to protect cabling and to limit internal power dissipation.
Note 2: When the limit is exceeded, the output voltage circuit starts to limit the current by switching the output voltage. The switching does not effect the application software.
Note 3: The duty cycle is defined as the percentage of digital ‘high’ to digital ‘low’ signals present during a PWM period.
Note 4: tC denotes the software cycle time.
Note 5: The pulse width must be greater that the software cycle time. For example with 50/50 pulse ratio, the pulse frequency is 1 / (2*pulse width)
Note 6: Exceeding the max value might cause permanent damage.
