NORDAC LINK (SK 155E-FDS / SK 175E-FDS) – Users Manual for Motor Starters as Field Distributors
44 BU 0155 en-3520
2.3.3.1 Control connection details
Description / Technical data
Function of factory setting
Signalling of the operating statuses of the FI
24 V DC
With inductive loads: Provide protection
via free-wheeling diode!
DOUT1 Digital output 1 P434 [-01] No function
Actuation of device using an external controller, switch or similar.
The factory settings of digital inputs DIN1 to DIN3 depend on the configuration of
option slots H1 and H2.
DIN1-5 according to EN 61131-2, type 1
Low: 0-5 V (~ 9.5 kΩ)
High: 15-30 V (~ 2.5 - 3.5 kΩ)
Reaction time: ≥ 4 ms
Input capacitance: 10 nF
DIN2 Digital input 2 P420 [-02] No function
Monitoring of motor temperature using PTC
The motor´s PTC resistor (TF) is
connected via the Q8 motor connection.
Use a shielded cable.
Connect a temperature sensor to put the device into operation
mode. As an alternative, you can deactivate the input
function. In this case, however, the thermal monitoring of the
motor is no longer possible.
P425 On
Control voltage from the inverter, e.g. as power supply for accessories
24 V DC ± 25 %, short circuit-proof
1) See "Total currents" information ( Section )
connection
Supply voltage for the FI
24 V DC ± 25 %
200 mA … 800 mA, depending on load of
inputs and outputs and use of options
With option (-HVS): Automatic changeover between the
external supply via the connection plug and internal mains
unity if the connected control voltage is insufficient.
Connection and actuation of an electromechanical brake. The FI generates an
output voltage for this, which depends on the mains voltage. The assignment of the
correct brake coil voltage must be taken into account in the selection.
Connected loads:
( Section )
Current: ≤ 500 mA
Permissible switching cycle time:
to 150 Nm ≤ 1/s
to 250 Nm ≤ 0.5/s
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