Nord Drivesystems SK 750E-751-323-A - Optional Equipment; Basic I;O Custom Interface

3.3 Overview of the customer interfaces
BU 0750 GB Technical design subject to change 41
3.3.3 Basic I/O custom interface
(SK CU1-BSC, part no.: 278200000)
The Basic I/O custom interface (Customer Unit) affords a sufficient
number of control terminals to handle control jobs of a straightfor-
ward kind. With this design it is a favourably priced option suitable for
a lot of applications.
The Basic I/O module provides for 1 analogue input and 3 digital in-
puts with which frequency inverter control functions can be ensured.
The analogue differential input is capable of processing signals in the
range between 0 and 10V.
The relay contact can be used to control a brake or to retransmit an
alarm signal to another system. A number of 13 different relay func-
tions is available in all.
Note: More details available in chap. 7.6, Parameter P400
Connector
Functions
Maximum conn. cross section
Parameter
X3.1
Output relays
1.5 mm
2
P434 ... P436
X3.2
Analogue input
1.5 mm
2
P400 ... P408
X3.3
Digital inputs
1.5 mm
2
P420 ... P422
NOTE: All control voltages are related to a common reference potential!
The potentials AGND /0V and GND /0V of the various units are interconnected.
Maximum allowable current load of the 5/15V power sources combined = 300mA!
Floating contacts or
output of a SPC: 7.5...33V
(low = 0...3.5Volt)
Differential input 0...10 V
X3.1
X3.2
X3.3
01 REL1.1
02 REL1.2
11 VREF 10V
12 AGND /0V
13 AIN1 -
14 AIN1 +
21 DIG IN 1
22 DIG IN 2
23 DIG IN 3
42 VO +15V
Digital inputs:
DIG IN 1 = enable right
DIG IN 2 = enable left
DIG IN 3 = parameter set bit 0
Output relays:
2.0A max.
28V DC /230 V AC
U
REF
= 10 V / I
max
= 10 mA
0V, gnd
Supply voltage:
15V, 300mA max.
SPC analogue output: 0...10V
or potentiometer: 2...10k