2 Assembly and installation
BU 0500 GB Subject to technical alterations 37
Terminal Function
[factory setting]
Data Description / wiring suggestion Parameter
Terminal block X5 For SK 5x5E, external 24V supply
21 DIN1 digital input 1
[ON right]
P420
22 DIN2 digital input 2
[ON left]
P421
23 DIN3 digital input 3
[parameter set bit0]
P422
24 DIN4 digital input 4
[fixed frequency 1,
P429]
7.5...30V, R
i
=6.1kΩ
P423
25 DIN5 digital input 5
[no function]
2.5...30V, R
i
=2.2kΩ,
only this input is
suitable for evaluation of
the thermistor with 5V
Each digital input has a reaction time
of 1 – 2ms.
41
40
44
25
24
23
22
21
GND/0V
18...30V
motor - PTC
NOTE: For the motor thermistor
(DIN5) P424 = 13 must be set.
P424
44 VI 24V 24V supply voltage
18…30V
at least 800mA
External voltage supply provided by
customer for the control unit of the
frequency inverter. Is essential for the
function of the frequency inverter.
Also for the connection of the digital
inputs or the supply of a 10-30V
incremental rotation encoder
40 GND /0V Reference potential
for digital signals
0V digital Reference potential
41 VO 5V 5V supply voltage
5V ± 20%
Voltage supply for motor-PTC
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