Lenze 490 Series Speed controllers tor DC motors - Manual (Page 10)

121fa
*o~ckod: •3.II~89
page: 7
7. Setting instructions
7.1 Turn trimmer ~ V
,
IxR fully anticlockwise. The trimmers
U
1p~1 ~nd
11fein are ~actory set for a standard set value
poEentiometer connection. Only when operating with a master
voltage, Uleit must be turned fully anticlockwise and ~fe
1n
to middle position in order to enable subesequently a basic
setting.
The trimmer ~ is factory set to nominal
controller current.
7.2 Setting of the current limit
This setting is only necessary when the motor current
is lower than the nominal controller current.
Turn trimmer ~ fully anticlockwise.
Connect a moving coil instrument in order to measure the
current to the armature cable;
observe the polarity.
For positive set value the polarity at the motor
terminal A is
(+) and at teriainal B (—).
For negative set value the polarity at the motor
terminal A is
(-) and at terminal B (+).
Block armature or disconnect when without voltage.
For armature voltage control disconnect cable to terminal5J.
Caution: Observe current capacity of the motor when at
standstill 1
Switch on the mains supply. LED ±Vcc and RSP light up. dose
switch RFR. LED RSP is not lit anymore.
Set speed setting potentiometer fully clockwise or set
master voltage to nominal value. LED 1 lights up. Turn
1 clockwise, until the desired ariaa~~e current flows.
T~epermissible output current of the controller must not be
exceeded.
See page 2, chapter 2, armature current.
open switch RFR. Connect the field. Reconnect supply cable
to terminal for armature voltage control.
7.3 donditions for setting see chapters 7.3.1 and 7.3.2
Connect a moving iron instrument as voltmeter to terminals A
and B of the motor.
When setting the speed, ensure that the
armature voltage does not exceed the permissible value of
U~jfl~~
=
400V.
7.3.1 Armature voltage control with IxR compensation
Connect teriainal A of the motor to terlainalWof the
controller and terminal B of the motor
to terminal~
as shown in the connecting diagram. Set the set value
potentiometer or master voltage to 0V. Open switch RFR.
Switch on mains. LEDs RSP and ±Vccare lit. Set the set
value potentiometer or master voltage to maximum. For master
voltage operation turn trimmer ~ clockwise until +10 VDO
are applied at the measuring poinE Ml (measured to terminal
£~). Set the set value potentiometer or master voltage to
approx. 10% of the final value. dose switch RFR.
LED PSP is not lit.
Lanze