5.5 Control terminals
BU 0500 GB
Subject to technical alterations
87
Parameter
Set value / Description / Note
Device
Supervisor
Parameter
set
P401
Mode analog input 1
S
0 = limited to 0 – 10V:
An analog setpoint smaller than the programmed adjustment 0%
(P402) does not lead to undershooting of the programmed minimum frequency (P104).
Therefore does not lead to any rotation direction reversal.
1 = 0 - 10V:
If a setpoint smaller than the programmed adjustment 0% (P402) is present, this
can cause a change in direction rotation. This allows rotation direction reversal using a
simple voltage source and potentiometer.
E.g. internal setpoint with rotation direction change: P402 = 5V, P104 = 0Hz,
Potentiometer 0–10V
Æ
Rotation direction change at 5V in mid-range setting of the
potentiometer.
During the reversing moment (hysteresis =
±
P505), the drive stands still when the
minimum frequency (P104) is smaller than the absolute minimum frequency (P505). A
brake that is controlled by the FI will have entered the hysteresis range.
If the minimum frequency (P104) is greater than the absolute minimum frequency (P505),
the drive reverses when the minimum frequency is reached. In the hysteresis range
±
P104, the FI supplies the minimum frequency (P104), the brake controlled by the FI is not
applied.
2 = 0 – 10V monitored:
if the
minimum adjusted setpoint
(P402) is undershot by 10% of the
difference value from P403 and
P402, the FI output switches off.
Once the setpoint is greater than
[
P402 - (10% * (P403 - P402))]
, it
will deliver an output signal again.
f / Hz
P104
(fmin)
P105
(fmax)
P
403 =
10
.0
V
P
40
2 =
2.
0V
= 8.0V
U/V
O
FF
=
2
.0
V
-
10
%
*
8.
0V
=
1.
2V
e.g. setpoint 4-20mA P402: Adjustment 0% = 1V; P403: Adjustment 100% = 5V; -10%
corresponds to -0.4V; i.e. 1...5V (4...20mA) normal operating zone, 0.6...1V = minimum
frequency setpoint, below 0.6V (2.4mA) output switches off.
0 ... 3
[ 0 ]
3 = - 10V – 10V:
If a setpoint smaller than the programmed adjustment 0% (P402) is present,
this can cause a change in direction rotation. This allows rotation direction reversal using
a simple voltage source and potentiometer.
E.g. internal setpoint with rotation direction change: P402 = 5V, P104 = 0Hz,
Potentiometer 0–10V
Æ
Rotation direction change at 5V in mid-range setting of the
potentiometer.
During the reversing moment (hysteresis =
±
P505), the drive stands still when the
minimum frequency (P104) is smaller than the absolute minimum frequency (P505). A
brake that is controlled by the FI will not have entered the hysteresis range.
If the minimum frequency (P104) is greater than the absolute minimum frequency (P505),
the drive reverses when the minimum frequency is reached. In the hysteresis range
(P104, the FI supplies the minimum frequency
±
P104), the brake controlled by the FI
does is not applied.
