Nord Drivesystems SK 180E Series, User Manual

Page: 51 / 212

2 Assembly and installation
BU 0180 en-4118 51
Analogue inputs Actuation of device by external controller, potentiometer or the like.
Resolution 12Bit
U= 0 …10 V, R
i
=30 k Ω
I= 0/4 … 20 mA
Burden resistance (250 Ω ) via DIP switch
AIN1/2
Maximum permissible voltage at
analogue input: 30 V DC
Matching of the analogue signals is performed via P402 and
P403.
+ 10 V Reference voltage: 5 mA not short-circuit resistant
11
40
14
10 kΩ
11 10V REF + 10 V Reference voltage - -
14 AIN1+ Analogue input 1 P400 [-01] Setpoint frequency
16
AIN2+ Analogue input 2 P400 [-02] No function
40 GND Reference potential GND - -
Digital inputs Actuation of device using an external controller, switch or the like.
as per EN 61131-2 Type 1
Low: 0- 5 V (~ 9.5 kΩ)
High: 15-30 V (~ 2.5 - 3.5 kΩ)
Scan time: 1 ms
Reaction time: ≥ 4 ms
Input capacitance: 10 nF
21 DIN1 Digital input 1 P420 [-01] ON right
22 DIN2 Digital input 2 P420 [-02] ON left
23 DIN3 Digital input 3 P420 [-03] Fixed frequency 1 (

P465[-01])
Note: Inputs DIN2 and DIN3 react more quickly than DIN 1
PTC resistor input Monitoring of motor temperature using PTC
If the device is installed near the motor, a
shielded cable must be used.
The input is always active. In order to make the device
operational, a temperature sensor must be connected or both
contacts must be jumpered.
38 TF+ PTC resistor input - -
39 TF- PTC resistor input - -
Control voltage source
Control voltage of device, e.g. for supplying accessories.
24 V DC ± 25 %, short circuit-proof Maximum load 150 mA
1)
43 VO / 24V Voltage output - -
40 GND / 0V Reference potential GND - -
1)
See "Total currents" information (

Section 2.4.3 "Electrical connection of the control unit")
System bus NORD-specific bus system for communicating with other devices (e.g. smart option
modules or frequency inverter)
Up to four frequency inverters (SK 2xxE,
SK 1x0E) can be operated on a single
system bus.

Address = 32 / 34 / 36 / 38
77 SYS H System bus+ P509/510 Control terminals / Auto
78 SYS L System bus- P514/515 250kBaud / Address 32
dec
System bus terminating
resistance
Termination at the physical end of the bus system
If the device is supplied preassembled (e.g. equipped with customer unit SK CU4 / SK TU4) the terminating
resistors on the device and the module are factory-set. If other devices are going to be incorporated in the
system bus, the terminating resistors must be reset accordingly.
It must always be checked before
commissioning that the terminating resistors have been correctly set (1x at beginning and 1x at end
of system bus).
S1 Factory setting "OFF"
(For deviating factory setting, see
explanation above)