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System Manual – MOVIDRIVE® compact Drive Inverters
3
Explanation of the parameters
Parameters
Examples for expert characteristic curves (P112 AI1 Operating mode = expert char-
act.):
Free choice of reference between setpoint voltage and speed for the expert character-
istic curve. For access to all options of the expert characteristic curve, set the parameter
P100 Setpoint source = BIPOL./FIX.SETPT.
One point in the characteristic curve (in Figure 32 indicated by a circle) is selected with
P113 AI1 voltage offset and P114 AI1 speed offset and the pitch is then selected with
P110 AI1 Scaling . Reference 3000 1/min always applies to scaling with the expert
characteristic curve.
The speed range is limited by P302 Maximum speed 1 / P312 Maximum speed 2 . In
Figure 32 the P302 Maximum speed 1 = 4000 1/min is set. Setting the maximum speed
does not change the slope.
When calculating the slope triangulation function
∆
y/
∆
x = slope = setting value of P110
AI1 Scaling the voltage value of the x-axis must be converted to a speed value. The fol-
lowing applies: 10 V = 3000 1/min.
For characteristic curves 2 and 4 in Figure 32, the slope triangulation functions are
calculated and the setting values for P110 AI1 Scaling determined.
Characteristic curve 2:
∆
y
2
= 2500 1/min,
∆
x
2
= 6 V = 1800 1/min,
∆
y
2
/
∆
x
2
= 2500/1800
= 1.39
Characteristic curve 4:
∆
y
4
= –3000 1/min,
∆
x
4
= 8 V = 2400 1/min,
∆
y
4
/
∆
x
4
=
–3000/2400 = –1.25
01264DEN
Figure 32: Example of expert characteristic curves with P100 Setpoint source = BI-
POL./FIX.SETPT.
P6..
P60.
P600
Summary of Contents for MOVIDRIVE compact MCH41A
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