User manual HONEYWELL NX
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Manual abstract: user guide HONEYWELL NX
Detailed instructions for use are in the User's Guide.
[. . . ] 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.
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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. [. . . ]
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