NORD Drivesystems BU0530 - Manual (Page 38)

Functional safety with NORD SK 500E frequency inverters
38 BU 0530 GB-3712
3.4.5 Details of the "Digital outputs" control connections
A digital output can be used to indicate the status of the "safe pulse block". It must be noted that this status
indication is not fail-safe.
Terminal block X/ – Digital I/O
Relevance
SK 500E SK 505E SK 510E SK 511E SK 515E SK 520E SK 530E SK 535E SK 540E SK 545E
√ √ √
Terminals X7: 73 74 26 27 5 7 42 40
RS485 + RS485 - DIN6 DIN7 DOUT1 DOUT2 VO 15V GND / 0V Designation
Terminal Function
[factory setting]
Data Description / wiring suggestion Parameter
up to
SK 535E SK 540E
and above
73
Data cable RS485
Baud rate
9600…38400Baud
Termination resistor
R=120

BUS connection parallel to RS485
on RJ12 plug
NOTE: The termination resistance of
DIP switch 1 (see RJ12/RJ45) can
also be used for terminal 73/74.
P503
P509
P503
P509
74
26 Digital input 6
[no function]
7.5...30V, R
i
=3.3k

As described for terminal block X5,
DIN1 to DIN5.
Not suitable for the evaluation of a
motor thermistor.
P425 P420 [-06]
27 Digital input 7
[no function]
P470 P420 [-07]
Only SK 54xE
Alternatively:
Output 5 (DOUT3)
[no function]
Digital output
15V, max. 20mA
max. 100k

load
With SK 54xE the digital input
(DIN7) can also be used as a digital
output (DOUT3).
If P434 [-05] and P420 [-07] are
parameterised with functions, a High
signal of the DOUT function results
in a High signal for the DIN function. P434 [-05]
5 Output 3 (DOUT1)
[no function] For evaluation in a control system.
The scope of functions corresponds
to that of the relay (P434).
P450 P434 [-03]
7 Output 4 (DOUT2)
[no function]
P455 P434 [-04]
Only SK 54xE
Alternatively:
Digital input 8
[no function]
7.5...30V, R
i
=3.3k

With SK 54xE the digital output
(DOUT2) can also be used as a
digital input (DIN3).
If P434 [-04] and P420 [-10] are
parameterised with functions, a High
signal of the DOUT function results
in a High signal for the DIN function. P420 [-10]
42 15V supply voltage
output
15V

20%
Voltage supply for connection to the
digital inputs or the supply of a 10-
30V encoder
40 Reference potential
for digital signals
0V digital