Nord Drivesystems SK 750E Series, Руководство пользователя

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NORDAC SK 750E Manual
44 Technical design subject to change BU 0750 GB
3.3.6 Multi I/O 20mA custom interface
(SK CU1-MLT-20mA, part no.: 278200015)
Maximum enhancement of the SK 750E in terms of digital and
analogue signal processing is enabled if the Multi I/O 20mA cus-
tom interface (
C ustomer U nit) is used. It will add 2 analogue and 6
digital inputs to the basic equipment of the inverter. The two ana-
logue inputs are capable of processing signals within the following
ranges: 0...10V, 0...20mA (4...20mA) or
-
10V...+10V respectively.
Two programmable and scalable analogue outputs 0/4…20mA en-
able retransmission of current operating parameters to a read-out
device or to a process control system.
The two relay contacts can be used to retransmit brake control in-
formation or even an alarm signal to another system.
The digital inputs of the Multi I/O 20mA are not capable of process-
ing analogue setpoints! (See also the section of "Control termi-
nals", P420-P425)
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!
Analogue output of the SPC:
0...10V / -10...+10 V
or potentiometer: 2...10k
Floating contact or output of an
SPC: 7.5...33V
Output relays:
2.0A max.
28V DC /230 V AC
Analogue inputs 1 and 2:
-10...+10V, 0/4...20mA
Supply voltage: 5V
Analogue outputs 1 and 2:
0/4…20mA
U
REF
= 10 V / I
max
= 10 mA
Supply voltage: 15V
DIG IN 6 exclusively =
temperature sensor !
Switching threshold = 2.5 V
Digital inputs:
DIG IN 1 = Enable right
DIG IN 2 = Enable left
DIG IN 3 = Parameter set bit 0
DIG IN 4 = Fixed frequency 1
DIG IN 5 / 6 = without function
functionion
X
2.1
X
2.2
X
2.3
11 VREF 10V
12 AGND /0V
14 AIN1 +
16 AIN2 +
17 AOUT1
21 DIG IN 1
22 DIG IN 2
23 DIG IN 3
24 DIG IN 4
42 VO +15V
01 REL1.1
02 REL1.2
03 REL2.1
04 REL2.2
25 DIG IN 5
26 DIG IN 6
18 AOUT2
40 GND /0V
41 VO +5V
Burden for connection into circuit of
0/4...20mA analogue input 1 (250 )
Burden for connection into circuit of
0/4...20mA analogue input 2 (250 )
Plug Functions Maximum cross section Parameter
X2.1 Output relays 1.5 mm
2
P434 ... P443
X2.2
IN / OUT ana-
logue signals
1.0 mm
2
P400 ... P419
X2.3 Digital inputs 1.0 mm
2
P420 ... P425
Analogue input 1
ON = curr., OFF = volt.
Analogue input 2
ON = curr., OFF = volt.
ON OFF
U/I changeover, R = 250 Ω