NORD Drivesystems BU0700 - Manual (Page 76)

NORDAC SK 700E Operating Manual
76 Subject to technical alterations BU 0700 GB-1411
5.1.5 Control terminals
Parameter Setting value / Description / Note Available with option
P400 Analog 1 input function BSC STD MLT
0...18
[ 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.
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 = Nominal 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 = PID current 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 via the analog input.
7 = Maximum frequency, the maximum frequency of the FI is set in the analog range. 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 = PID limited current frequency *, like Function 3, PID current frequency, however the output
frequency cannot fall below the programmed minimum frequency value in Parameter P104. (no
change to rotation direction)
9 = PID supervised current frequency *, like Function 3, PID current frequency, however the FI
switches the output frequency off when the minimum frequency P104 is reached.
10 = Servo-Mode Torque, in the Servo mode the motor torque can be set using this function.
11 = Pre-tension Torque, 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.
14 = Current value process controller *, activates the process controller, analog input 1 is
connected to the actual value encoder (compensator, air can, flow volume meter, etc.). The
mode (0-10 V or 0/4-20 mA) is set in P401.
15 = Process controller setpoint *: Like Function 14, however the setpoint is specified (e.g. by a
potentiometer). The actual value must be specified using another input.
16 = Process controller precontrol *: Adds an adjustable additional setpoint after the process
controller
Further details regarding the process controller can be found in Chapter 8.2
17 = Reserved
18 = Curve travel control: The slave transmits its actual speed to the master via the analog input (or
BUS, P547/548). This then calculates the actual setpoint speed from its own speed, the slave
speed and the guideline speed so that neither of the two drives travel faster in the curve than the
guideline speed.
*) The limits of these values are set by the parameters >Minimum frequency auxiliary setpoints<
P410 and >Maximum frequency auxiliary setpoints< P411.