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NORD Drivesystems BU0540 User Manual

Page 26

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SK 500E – Brief instructions for frequency inverters

26

BU 0540 GB-1013

Relevance

SK 500E

SK 505E

SK 510E

SK 511E

SK 515E

SK 520E

SK 530E

SK 535E

Terminals X7:

73

74

26

27

5

7

44*

40

* Terminal 44:

up to Size 4: VI

Size 5 and

above: VO

RS485

+

RS485 -

DIN6

DIN7

DOUT1

DOUT2

V…24V

GND/0V

Name

Terminal Function

[factory setting]

Data

Description / wiring suggestion

Parameter

73

Data cable RS485

Baud rate
9600…38400Baud

Termination resistance
R=120

W

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

74

26

Digital input 6

[no function]

7.5...30V, R

i

=3.3k

W

As described for terminal block X5, DIN1
to DIN5.

Not suitable for the evaluation of a motor
thermistor.

P425

27

Digital input 7

[no function]

P470

5

Output 3 (DOUT1)

[no function]

Digital output

S1 to S4

18-30V, according to VI
24V, max. 20mA
size 5 and above

DOUT1 and DOUT2:

24V, max. 200mA

For inductive loads:
provide protection with a
free-wheeling diode.

For evaluation in a control system. The
scope of functions corresponds to that of
the relay (P434).

P450

7

Output 4 (DOUT2)

[no function]

P455

44

Size 1 to Size 4
VI 24V supply
voltage input

18…30V

at least 800mA (input)

Voltage supply for the FI control unit. Is
essential for the function of the
frequency inverter.

Size 5 and above
VO 24V supply
voltage output

24V ± 25%
max. 200mA (output)

Supply voltage provided by the
frequency inverter for connection to the
digital inputs or the supply of a 10-30V
encoder.

The 24V control voltage is generated by
the FI, however it can also be supplied
via the terminals X12:44/40. Supply via
terminal X7:44 is not possible.

40

Reference potential
for digital signals

0V digital

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