SK 500E – Brief instructions for frequency inverters
22 BU 0540 EN-1516
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Terminal block X5 – Digital In
Relevance
SK 500E
SK 505E
SK 510E SK 511E
SK 515E
SK 520E SK 530E
SK 535E
√
√ √
√ √
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
21 Digital input 1
[ON right]
7.5...30V, R
i
=6.1kΩ
Not suitable for thermistor
evaluation.
HTL encoders can only be
connected to DIN2 and
DIN4
Limiting frequency:
max. 10 kHz
Each digital input has a reaction time of
≤ 5ms.
Connection with internal 15V:
21
22
23
24
25
42
40
41
15V
motor - PTC
Connection 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
=2.2kΩ
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%
max. 150 mA (output)
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%
max. 250 mA (output)
short-circuit resistant
Voltage supply for motor-PTC
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