Curtis 1229 handleiding
Handleiding
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3 — I/O MAPPING
pg. 33
Return to TOC 1229 Manual - OS 1.8 RevA - May 2021
Example 5: More sophisticated use of the Enable Input parameter
Example 4 congures Driver 3 running a pump from Switch 5 at 100% duty cycle with 0.5 s so start.
is example modies the mapping so the pump only runs when Switch 5 is On and the vehicle is
driving forward at greater than 5% speed.
4-Switch 4
On Delay = 0.1 s
Off Delay = 0.1 s
Normally Closed = Off
1-Switch 1
On Delay = 0.1 s
Off Delay = 0.1 s
Normally Closed = Off
40-Vehicle Speed
92-Forward
Input = 1 (Switch 1)
17-Threshold 4
Input = 40
On Threshold = 6%
Off Threshold = 5%
42-Logic Gate 2
AND/OR/XOR = 1 (AND)
Input 1 = 92 (Forward)
Input 2 = 17 (Threshold 4)
Input 1- = Off
Input 2- = Off
Output- = Off
73-Slew Limit 1
Input = 4 (Switch 4)
Enable Input = 42
Rate Up = 0.5 s
Rate Down = 0.1 s
82-Driver 3
Disable/Low Side = 1
Input = 73 (Slew Limit 1)
Enable Input = 100
100-Always On 100%
Signal #4
Signal #42
Signal
#73
Signal #100
Signal
#1
Signal #92
Signal #17
Signal #40
The 73-Slew Limit 1 Enable Input parameter now uses a sophisticated vehicle status function
mandating that the pump on Driver 3 will run only when Switch 4 is On and the vehicle is moving
forward at greater than 5% speed.
The 92-Forward function uses the signal from 1-Switch 1 as the forward switch, and because
92-Forward is itself a function, it is available as a vehicle status and can be mapped to other functions
in the 1/O map. e preference in this situation is to use 92-Forward to indicate forward rather than
1-Switch 1, because 92 will always indicate forward regardless of other mapping. In fact, the function
92-Forward will indicate the vehicle is commanded in the forward direction even in applications
with no forward switch (for example, in applications with wigwag throttles or in applications with a
single direction switch mapped to 93-Reverse).
e 40-Vehicle Speed function congures the encoder input. But, when an encoder input is not used
(as in this example, where Switch 4, which is the encoder input, is congured as a switch input) this
function becomes a vehicle status that indicates vehicle speed based on the motor’s back-EMF, as a
percentage of the Speed Scaler parameter. is signal is mapped to a threshold function to detect
the specied 5% speed, and then into a logic gate where it is ANDed with the 92-Forward signal,
resulting in a signal that indicates driving forward at greater than 5% speed, which is then mapped
into the Enable Input parameter of the slew limiter.
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Productinformatie
| Merk | Curtis |
| Model | 1229 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 19864 MB |
