Lenze 490 Series Speed controllers tor DC motors - Manual (Page 15)

EK12/fa checked: 03.11.89 page: 12
Note
:
The position R 101 appears on the c~ontrob boards
4091.2 <see red babel on batest design). For older
boards with the designation 4091.1 <see red babel)
this resistor is named R 102.
5]
-Vcc= -15V= stabibized. Maximum externab bad is 50 mA
5]
input for actual speed vabue or master voltage
5]
+Vcc
=
+15V
=
stabilized. Maximum externab bad is 50 InA
GND, controller reference point
controbler release, see chapter 8
5Z controbber inhibit, see chapter 8
5] transistor output faubt indication
In the controllers 495 and 496 the temperature of the
power semiconductors is supervised by a temperature
sensor. If the heat sink exceeds the limit temperature
‚~~‚~1imit
=
90~C, the controbber inhibit RSP is activated
inside the controbber and the firing pulses are set
to the inverter limit position, i.e. the motor is
without current and idles. An ebectricab batching system
prevents an automatic switch—on even after the
controbber
has coobed <The sebf-holding circuit can only
be released by switching the mains off and on again!) At
terminab 19 U =0.6V are appbied. The output can be
loaded with maximum
=
600fl and is suitabbe for the
direct connection of a rebay.
Rebay: e.g. REL/TRP-15
part no.
321 351
Rrn,n o600R
For appbications, where the motor must not automaticabby
be without current after having
exceeded the maximum
coobing temperature of the motor, the resistor R 311 (on
soldering posts) must be removed. In case of a
controbber faubt onby a faubt indication is dispbayed.
daution: The cause of the faubt mu~t always be removed
as soon as possibbe, otherwise the operating safety of
the controlber is
not maintained anyinore.
e Vcc
Lanze