NORD Drivesystems BU0505 - Manual (Page 98)

SK 54xE – Users Manual for Frequency Inverters
98 BU 0505 GB-1013
Control terminals
Parameter
{factory setting}
Setting value / Description / Note Supervisor
Parameter
set
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P400 [-01]
...
[-08]
Digital analog input
(Analog input function)
P
0 ... 82
{ [-01] = 1 }
all other { 0 }
[-01] = Analog input 1: analog input 1, integrated into the FI
[-02] = Analog input 2: analog input 2, integrated into the FI
[-03] = External analog input 1, "External analog input 1": Analog input 1 of the first IO
extension
[-04] = External analog input 2, "External analog input 2": Analog input 2 of the first IO
extension
[-05] = External Analog input 1, 2nd IOE, "External analog input 1 of the 2nd IOE": Analog
input 1 of the second IO extension
[-06] = External Analog input 2, 2nd IOE, "External analog input 2 of the 2nd IOE": Analog
input 2 of the second IO extension
[-07] = Analog function, Dig2, "Analog function of digital input 2": Analog function of digital
input 2 integrated into the FI. With this setting, digital input DIN2 is set to evaluate
pulse signals. The pulses are then evaluated as an analog signal according to the
function which is set here.
[-08] = Analog function, Dig3, "Analog function of digital input 3": Analog function of digital
input 3 integrated into the FI. With this setting, digital input DIN3 is set to evaluate
pulse signals. The pulses are then evaluated as an analog signal according to the
function which is set here.
In addition to the internal analog inputs, analog functions from the digital inputs DIN 2 and DIN 3
or the analog inputs of optional IO extension modules can also be processed.
Assignment of the analog functions is carried out in the relevant array of parameter P400. The
possible analog functions can be found in the following table.
Assignment of digital functions to the analog inputs 1 and 2 of the motor controller is carried out in
parameter P420 [-08] or [-09]. The functions which can be set correspond to those of the digital
inputs (see table after P420).
The possible functions are listed in the following tables.
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List of possible analog functions of the analog inputs
Value Function Description
00 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).
01 Setpoint frequency The specified analog range (matching of analog input) varies the output frequency
between the set minimum and maximum frequencies (P104/P105).
02 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%)!
03 Actual frequency PID* Is required in order to set up a control circuit. 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 values
P413...P415).
04 Frequency addition ** The supplied frequency value is added to the setpoint.
05 Frequency subtraction** he supplied frequency value is subtracted from the setpoint.
06 Current limit Based on the set current limit (P1536), this can be altered via the analog input.