2 Assembly and installation
BU 0505 EN-3021 63
Terminal block X5 – Digital In
Relevance
SK 540E SK 545E
√
Terminals X5:
DIN1 DIN2 DIN3 DIN4 TF- TF+ VO 15V GND/0V
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
39
38
42
40
motor - PTC
15V
Connection with external 7.5-30V:
21
22
23
24
39
38
42
40
motor - PTC
GND / 0V
7.5 … 30V
P420 [-01]
22 Digital input 2
[ON left]
P420 [-02]
23 Digital input 3
[parameter set bit0]
P420 [-03]
24 Digital input 4
P429]
P420 [-04]
39 Thermistor input -
Potential isolated
thermistor input, which
cannot be disabled, for
monitoring the motor
temperature with a PTC
38 Thermistor input +
42 15V supply voltage
output
15V ± 20%
max. 150 mA (output)
short-circuit resistant
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
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