NORD Drivesystems BU0300 - Manual (Page 47)

3.3 Customer unit overview
BU 0300 EN Subject to technical alterations 47
3.3.2 Customer unit Standard I/O
(SK CU2-STD, Part. No. 275130020)
(SK CU2-STD-C, Part. No. 275170020)
The Standard I/O Customer Unit provides the highest functionality of digital and
analogue signal processing for the SK 300E. In addition to the standard
equipment, 2 analogue inputs, 4 digital inputs and 1 analogue/digital output are
available.
The 2 analogue inputs are not differential inputs. The analogue inputs can
process signals from 0...10V, 0...20mA or 4...20mA with a burden resistance that
can be switched via a DIP switch. Either analogue or digital evaluation is possible
at the analogue output to transfer actual operating parameters, e.g. to a display
device or process control system.
Note: AGND, 0V is the reference potential for the analogue and digital inputs.
Customer side
Referen ce voltag e +10 V ( ma x. 10 mA) [1 1]
AGND / 0V [1 2]
Ana log inp ut 1 [1 4]
Ana log inp ut 2 [1 6]
Ana log ou tp ut 1 [1 7]
Digital inp ut 2 [Ena ble rig ht] [2 2]
Digital inp ut 3 [Ena ble left] [2 3]
Digital inp ut 4 [Para meter se t switch ing] [2 4]
Digital inp ut 5 [fixed freq uen cy 1] [2 5]
Sup ply vo lta ge +1 5 V (max. 10 0 mA ) [4 2]
0...10V, 0/4…20mA
or
potentiometer:
2,0k
Ω...10kΩ
Floating contact or
PLC output:
7,5...33V (low=0...3,5V)
(Maximum terminal cross-section: 1,5 mm²)
DIP switches:
You can select, for the analogue input, whether current or voltage setpoints should be used. Set the DIP
switches as follows.
1. Switching the
load resistor ON = Stromsollwert 0/4...20 mA
for analog input 1 OFF = Spannungssollwert 0...10 V
2. Switching the
load resistor ON = Current setpoint 0/4...20 mA
for analog input 2 OFF = Voltage setpoint 0...10 V
NOTE With current setpoint setting:
Scaling must be taken into account when operating with a current setpoint of 0/4...20mA.
If 20mA represents a setting of 100%, then parameter P403 "Analogue input 1 adjustment 100%"
must be set to 5V!
Analogue inputs:
If both analogue inputs are parameterised to the same function, then analogue input 1 has priority
and analogue input 2 has no function!