Normally, MICROMASTER expects a steady-state ON / OFF command (switch). In order to control a MICROMASTER drive using a pushbutton (pulse/momentary contact signal), then generally a relay interconnection is required. However, for frequency inverters that have free function blocks (FFB), then these can also be used to control an inverter using pushbuttons.
As an example, the “ON / OFF 1” (P0840) is used in the following examples. However, there are additional options to realize the interconnection e.g. “ON/OFF 1 with reversing” (P0842) and “Reversing” (P1113), refer to the Parameter List and Function Manual.
Exclusion:
- This FAQ can be used for MICROMASTER 430, 440 and SINAMICS G120 with CU240x FW < V4.0.
- Only a limited number of FFB are available.
The following parameter assignments should be made for the examples:
Example 1: ON/OFF 1 using one NO contact and one NC contact, 2 digital inputs
| Parameter |
Description |
Setting |
Description |
Notice |
| P0700 |
Selection of command source |
2 |
Terminal |
Default setting |
| P0701 |
Function of digital input 1 |
99 |
Enable BICO parameterization |
ON via push-button, NO |
| P0702 |
Function of digital input 2 |
99 |
Enable BICO parameterization |
OFF via push-button, NC |
| P0840 |
ON/OFF1 command source using BICO |
r2841 |
output of RS-Flip-Flop 1 |
ON-signal via RS-FF- output |
| P2800 |
Enable FFB |
1 |
Enable |
FFB Free function blocks |
| P2801.09 |
Activate FFB |
1 |
Enable NOT 1 |
|
| P2801.14 |
Activate FFB |
1 |
Enable RS-FF 1 |
|
| P2828 |
defines input of NOT 1 element |
r722.1 |
status of digital inputs |
OFF-Signal connected to NOT-input |
| P2840.0 |
define inputs of RS-Flip-Flop 1 |
r722.0 |
status of digital inputs |
ON-Signal connected to RS-FF-input |
| P2840.1 |
define inputs of RS-Flip-Flop 1 |
r2829 |
Output of NOT 1 element |
Negated OFF-Signal connected to RS-FF- input |
Example 2: ON/OFF 1 using two NO contacts, 2 digital inputs
| Parameter |
Description |
Setting |
Description |
Notice |
| P0700 |
Selection of command source |
2 |
Terminal |
Default setting |
| P0701 |
Function of digital input 1 |
99 |
Enable BICO parameterization |
ON via push-button, NO |
| P0702 |
Function of digital input 2 |
99 |
Enable BICO parameterization |
OFF via push-button, NC |
| P0840 |
ON/OFF1 command source using BICO |
r2841 |
output of RS-Flip-Flop 1 |
ON-signal via RS-FF- output |
| P2800 |
Enable FFB |
1 |
Enable |
FFB Free function blocks |
| P2801.14 |
Activate FFB |
1 |
Enable RS-FF 1 |
|
| P2840.0 |
define inputs of RS-Flip-Flop 1 |
r722.0 |
status of digital inputs |
ON-Signal connected to RS-FF-input |
| P2840.1 |
define inputs of RS-Flip-Flop 1 |
r2829 |
Output of NOT 1 element |
OFF-Signal connected to RS-FF- input |
Example 3: ON/OFF 1 using one NO contact, 1 digital input
| Parameter |
Description |
Setting |
Description |
Notice |
| P0701 |
Function of digital input 1 |
99 |
Enable BICO parameterization |
ON-/OFF-signal via DIN1 |
| P0840 |
ON/OFF1 command source using BICO |
r2841 |
output of RS-Flip-Flop 1 |
ON-signal via RS-FF- output |
| P2800 |
Enable FFB |
1 |
Enable |
FFB Free function blocks |
| P2801.00 |
Enable FFB |
2 |
AND 1 Enable |
|
| P2801.01 |
Enable FFB |
2 |
AND 2 Enable |
|
| P2801.14 |
Enable FFB |
1 |
RS-FF 1 Enable |
|
| P2802.00 |
Enable FFB |
1 |
Timer 1 Enable |
|
| P2810.00 |
AND 1; input A |
r2852 |
Timer 1 output |
|
| P2810.01 |
AND 1; input B |
r2842 |
RS-FlipFlop 1 Not-output |
|
| P2812.00 |
AND 2; input A |
r2852 |
Timer 1 output |
|
| P2812.01 |
AND 2; input B |
r2841 |
RS-FlipFlop 1 output |
|
| P2840.00 |
Inputs of RS-FlipFlop 1 |
r2811 |
AND 1 output |
|
| P2840.01 |
Inputs of RS-FlipFlop 1 |
r2813 |
AND 2 output |
|
| P2849 |
Input signal of timer 1 |
r0722.0 |
Binary input values |
Switch-on/switch-off via DIN1 |
| P2850 |
Delay time of timer 1 |
0.0 |
Factory setting |
Plant/system dependent |
| P2851 |
Mode timer 1 |
3 |
Pulse generator |
[Sec] |
|
german
