5.5 Control terminals
BU 0500 GB
Subject to technical alterations
85
5.5 Control terminals
Parameter
Set value / Description / Note
Device
Supervisor
Parameter
set
P400
Analog input function 1
P
0 ... 82
[ 1 ]
The FI analog input can be used for various functions. It must be noted that only one of the
functions given below is possible at any time.
If, for example, an actual PID frequency is selected, the frequency setpoint cannot be an analog
signal. The setpoint can, e.g., be specified via a fixed frequency.
Analog functions:
0 = Off,
the analog input has no function. After the FI has been enabled via the control
terminals, it will supply the set minimum frequency (P104).
1 = Set frequency,
the given analog range (P402/P403) varies the output frequency
between the set minimum and maximum frequencies (P104/P105).
2 = Torque current limit,
based on the set torque current limit (P112), this can be altered by
means of an analog value. 100% setpoint here corresponds to the set torque current limit
P112. 20% cannot be undershot (with P300=1, not below 10%)!
3 = Actual PID frequency *,
is required to build up a control loop. The analog input (actual
value) is compared with the setpoint (e.g. fixed frequency). The output frequency is
adjusted as far as possible until the actual value equals the setpoint. (see control
variables P413...P415)
4 = Frequency addition **,
the supplied frequency value is added to the setpoint.
5 = Frequency subtraction**,
the supplied frequency value is subtracted from the setpoint.
6 = Current limit,
based on the set current limit (P536), this can be altered by means of an
analog value.
7 = Maximum frequency,
the maximum frequency of the FI is varied. 100% corresponds to
the setting in parameter P411. 0% corresponds to the setting in parameter P410. The
values for the min/max output frequency (P104/P105) cannot be exceeded or undershot.
8 = Actual frequency PID limited *,
like function 3, actual frequency PID, however the
output frequency cannot fall below the programmed minimum frequency value in
Parameter P104. (no change to rotation direction)
9 = Actual frequency PID monitored *,
as function 3, actual frequency PID, however the FI
switches the output frequency off when the minimum frequency P104 is reached.
10 = Servo mode torque,
in servo mode P300 the motor torque can be set using this
function. Here the encoder P300 is switched off and a torque control activated. The
analog input is then the source of the setpoint value.
11 = Torque precontrol,
function that enables a value for the anticipated torque requirement
to be entered in the controller (interference factor switching). This function can be used to
improve the load take-up of lift equipment with separate load detection.
12 =
reserved
13 = Multiplication
, the setpoint is multiplied with the analog value supplied. The analog
value adjusted to 100% then corresponds to a multiplication factor of 1.
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