NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
116 BU 0200 en-3118
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4.4 KTY84-130 connection
The current vector control of the frequency inverter can be further optimised by the use of a KTY84-
130 temperature sensor (R
th(0°C)
=500Ω, R
th(100°C)
=1000Ω). By continuous measurement of the motor
temperature, the highest precision of regulation by the frequency inverter and the associated optimum
speed precision of the motor is achieved at all times. As the temperature measurement starts
immediately after the (mains) switch-on of the frequency inverter, the frequency inverter provides
immediate optimum control, even if the motor has a considerably increased temperature after an
intermediate "Mains off / Mains on" of the frequency inverter.
To determine the stator resistance of the motor, the temperature range 15 … 25°C should not be exceeded.
Excess temperature of the motor is also monitored and at 155°C (switching threshold for the thermistor) causes
the drive unit to shut down with error message E002.
Pos: 25 5 /Anlei tung en/El ektr onik/FU und Star ter/4 . Inbe trieb nahme/ SK 1xx E, SK 2x xE, -FDS/ KTY8 4-130 Inf orm ati on - P olarität beachten [SK 1xxE, SK 2xxE, SK 5xxE] @ 10\mod_1456847395379_388.docx @ 311160 @ @ 1
Pay attention to polarity
KTY sensors are wired semiconductors that must be operated in the conducting direction. In order to do this, the
anode must be connected to the "+" contact of the analogue input. The cathode must be connected to the "-"
ground or ground contact of the analogue input.
Failure to observe this can lead to erroneous measurements. Motor winding protection will no longer be
guaranteed.
Pos: 25 6 /Allg emein/ Allg emeing ültig e Mod ule/---------Sei tenumbr uch ko mpakt --------- @ 13\mod_1476369695906_0.docx @ 2265495 @ @ 1
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