NORD Drivesystems BU0530 - Manual (Page 34)

Functional safety with NORD SK 500E frequency inverters
34 BU 0530 GB-3712
3.4.4 Details of the "Digital inputs" control connections
NOTE
AGND and DGND are common reference potentials for analog or digital inputs.
5V / 15V can be collected by several terminals if required. The sum of collected currents must
not exceed 250mA / 150mA.
Terminal block X5 – Digital In
Relevance
SK 500E SK 505E SK 510E SK 511E SK 515E SK 520E SK 530E SK 535E SK 540E SK 545E
√ √ √ √ √
Terminals X5: 21 22 23 24 25 42 40 41
DIN1 DIN2 DIN3 DIN4 DIN5 VO 15V GND / 0V VO 5V Designation
Terminal Function
[factory setting]
Data Description / wiring suggestion Parameter
up to
SK
535E
21 Digital input 1
[ON right]
7.5...30V, R
i
=6.1k

Not suitable for
thermistor evaluation.
HTL encoders can only
be connected to DIN2
and DIN4
Limiting frequencies:
max. 10 kHz
min. 15 Hz
Each digital input has a reaction time
o
f ≤ 5ms.
Control with internal 15V:
21
22
23
24
25
42
40
41
15V
motor - PTC
Control with external 7.5-30V:
21
22
23
24
25
42
40
41
7.5 … 30V
motor - PTC
GND / 0V
P420
22 Digital input 2
[ON left]
P421
23 Digital input 3
[parameter set bit0]
P422
24 Digital input 4
[Fixed frequency 1,
P429]
P423
25 Digital input 5
[no function]
2.5...30V, R
i
=2.2k

Not suitable for
evaluation of a safety
device.
Suitable for thermistor
evaluation with 5V.
NOTE: For the motor
thermistor P424 = 13
must be set.
P424
42 15V supply voltage
output
15V

20%
Supply voltage provided by the
frequency inverter for connection to
the digital inputs or the supply of a
10-30V encoder.
40 Reference potential
for digital signals
0V digital Reference potential
41 5V supply voltage
output
5V

20% Voltage supply for motor-PTC