NORD Drivesystems BU0530 - Manual (Page 40)

Functional safety with NORD SK 500E frequency inverters
40 BU 0530 GB-3712
4 Parameterisation
In this manual, only those parameters and configurations are listed, which are of immediate significance to
functional safety. For additional information, please observe the instructions in manual BU 0500 GB.
ATTENTION
to implement the STO function, the "block voltage"function [10] must be assigned to the
appropriate parameter (P420 [-
01]…[-04], depending on the digital input selected (DIN1 … DIN4).
For the SS1 function, the "fast stop" function [11] is assigned to the appropriate parameter. In
addition, the stopping time must be entered in parameter P426 and the DC run-on time must be
entered in parameter P559.
For function SS1, the fast stop time (P426) must be rated so that the drive is stopped within this
time. The DC follow-up time follows after the fast stop time (see above). The delay time of the
delayed output of the protective switching device must be rated so that it is longer than the fast
stop time plus the DC follow-up time.
Parameter list
Parameter Setting value / Description / Note Device Supervisor Parameter set
P420
Digital input 1
(Digital input 1)
up to
SK 535E
0 ... 74
{ 1 }
Enable right as factory setting, control terminal 21 (DIN1)
Various functions can be programmed. These can be seen in the following table.
P420 [-01]
...
[-10]
Digital inputs
(Digital input functions)
SK 540E and
above
0 ... 80
{ [-01] = 1 }
{ [-02] = 2 }
{ [-03] = 8 }
{ [-04] = 4 }
all other { 0 }
Up to 10 inputs which can be freely programmed with digital functions are available in the SK
54xE. Of these inputs, analog inputs 1 and 2 of the frequency inverter do not comply with
EN61131-2 (Type 1 digital inputs).
[-01] = Digital input 1 (DIN1): Enable right, (default), Terminal 21
[-02] = Digital input 2 (DIN2): Enable left, (default), Terminal 22
[-03] = Digital input 3 (DIN3): Parameter switching, (default), Terminal 23
[-04] = Digital input 4 (DIN4): Fixed frequency 1 (P429), (default), Terminal 24
[-05] = Digital input 5 (DIN5): No function, (default), Terminal 25
3
[-06] = Digital input 6 (DIN6): No function, (default), Terminal 26
[-07] = Digital input 7 (DIN7): No function, (default), Terminal 27
4
[-08] = Digital function Analog1 (AIN1), "Digital function of analog input 1": Terminal 14 5
[-09] = Digital function Analog2 (AIN2), "Digital function of analog input 2": Terminal 16
c
[-10] = Digital input 8 (DIN8): No function, (default), Terminal 7
b
P421
Digital input 2
(Digital input 2)
up to SK
535E
0 ... 74
{ 2 }
Enable left as factory setting, control terminal 22 (DIN2)
Various functions can be programmed. These can be seen in the following table.
P422
Digital input 3
(Digital input 3)
up to SK
535E
0 ... 74
{ 8 }
Parameter set switching Bit 0 as factory setting, control terminal 23 (DIN3)
Various functions can be programmed. These can be seen in the following table.
3
Up to and including Size 4, digital input 5 is not available. In place of this a potential-free isolated thermistor input is implemented, whose function cannot be
disabled. If no thermistor is present the two terminals TF- and TF+ must be bridged. Parameterisation of this input does not have any effect.
4
Digital input 7 (DIN7) can also be used as digital output 3 (DOUT3 / Binary output 5). It is recommended that either an input function (P420 [-07] or an output
function (P434 [-05]) is parameterised. However, if and input function and an output function are parameterised, a High signal from the output function will re-
sult in the activation of the input function. This IO-exclusion is hence used as a kind of "flag". This also applies for digital input 8 (DIN8) and digital output 2
(DOUT2 / binary output 4).
5
The analog inputs 1 and 2 (AIN1 / 2) can also process digital functions. Care must be taken that either an analog function (P400 [-01]/[-02]) or a digital func-
tion (P420 [-08]/[-09]) is parameterised in order to prevent misinterpretation of the signals.