User manual HONEYWELL NX

[. . . ] CONTENTS NX "All in One" APPLICATION MANUAL INDEX 1 Basic Application 2 Standard Application 3 Local/Remote Control Application 4 Multi-step Speed Control Application 5 PID Control Application 6 Multi-purpose Control Application 7 Pump and Fan Control Application 8 Description of parameters 9 Appendices ABOUT THE "All in One" APPLICATION MANUAL In the All in One Application Manual you will find information about the different applications included in the All in One Application Package. Should these applications not meet the requirements of your process please contact the manufacturer for information on special applications. If you have the electronic version at your disposal you will be able to benefit from the following features: The manual contains several links and cross-references to other locations in the manual which makes it easier for the reader to move around in the manual, to check and find things faster. To visit these web pages through the links you must have an internet browser installed on your computer. 3(209) Application manual INDEX 1. [. . . ] Terminals 4­5 Keypad reference (Menu M3) Fieldbus reference* 5 Analogue volt. ref. Terminals 4­5 AI3 AI4 Keypad reference (Menu M3) Fieldbus reference* Potentiometer ref. Terminals 4­5 AI1+AI2 AI1­AI2 AI2­AI1 AI1*AI2 AI1 joystick AI2 joystick Keypad reference (Menu M3) Fieldbus reference* 7 Analogue volt. ref. Terminals 4­5 AI3 AI4 Keypad reference (Menu M3) Fieldbus reference* Potentiometer ref. Selections for parameter ID121 *FBSpeedReference 122 Fieldbus frequency reference selection 234567 (2. 1. 13, 2. 1. 14, 2. 2. 7, 2. 2. 1. 3) Defines which frequency reference source is selected when controlled from the fieldbus. For selections in different applications, see ID121. 124 Jogging speed reference 34567 (2. 1. 14, 2. 1. 15, 2. 1. 19) Defines the jogging speed selected with the DIN3 digital input which can be programmed for Jogging speed. Parameter value is automatically limited between minimum and maximum frequency (ID's 101 and 102). 126 127 128 129 130 Preset speed 3 Preset speed 4 Preset speed 5 Preset speed 6 Preset speed 7 46 46 46 46 46 (2. 1. 17) (2. 1. 18) (2. 1. 19) (2. 1. 20) (2. 1. 21) Parameter values define the Multi-step speeds selected with the DIN3, DIN4, DIN5 and DIN6 digital inputs. Parameter value is automatically limited between minimum and maximum frequency (ID's 101 and 102). 8 126(209) Description of parameters Speed Basic speed P2. 1. 17 (3) P2. 1. 18 (4) P2. 1. 19 (5) P2. 1. 20 (6) P2. 1. 21 (7) Multi-step speed sel. Preset speeds 3 to 7 131 132 I/O frequency reference selection, place B See the values of the parameter ID117 above. 3 (2. 1. 12) PID controller D-time 57 (2. 1. 14) The parameter ID132 defines the derivation time of the PID controller. If this parameter is set to 1, 00 second a change of 10% in the error value during 1. 00 s causes the controller output to change by 10. 00%. If the parameter value is set to 0. 00 s the PID controller will operate as PI controller. Example 1: In order to reduce the error value to zero, with the given values, the frequency converter output behaves as follows: Given values: Par. = 50 Hz In this example, the PID controller operates practically as I-controller only. According to the given value of parameter 2. 1. 13 (I-time), the PID output increases by 5 Hz (10% of the difference between the maximum and minimum frequency) every second until the error value is 0. Hz PID output Error value 10% I-Part=5 Hz/s 10% 10% 10% Error=10% 1s I-Part=5 Hz/s I-Part=5 Hz/s I-Part=5 Hz/s I-Part=5 Hz/s NX12k70 t Figure 8-3. PID controller function as I-controller. Description of parameters Example 2: Given values: Par. 2. 1. 14, D-time = 1. 00 s Error value (setpoint ­ process value) = ±10% 127(209) 8 Min freq. = 50 Hz As the power is switched on, the system detects the difference between the setpoint and the actual process value and starts to either raise or decrease (in case the error value is negative) the PID output according to the I-time. Once the difference between the setpoint and the process value has been reduced to 0 the output is reduced by the amount corresponding to the value of parameter 2. 1. 13. In case the error value is negative, the frequency converter reacts reducing the output correspondingly. See Figure 8-4. Hz PID output D-part D-part D-part P-part=5 Hz Error=10% Error= -10% P-part= -5 Hz NX12k69 Error value t Figure 8-4. PID output curve with the values of Example 2. 8 128(209) Example 3: Given values: Description of parameters Par. = 0 Hz Error value (setpoint ­ process value) = ±10%/s Max freq. [. . . ] At frequencies above the frequency limit, the motor is in frequency control. Sometimes increasing the frequency limit (ID635) will improve the run. Increase the zero frequency point to get enough current at frequency limit. Appendices 9. 4 Parameters of motor thermal protection (ID's 704 to 708): 209(209) 9 General The motor thermal protection is to protect the motor from overheating. The drive is capable of supplying higher than nominal current to the motor. [. . . ]