© 1989 by SYSTEME LAUER GMBH • D 72669 Unterensingen • Kelterstr. 59 • TEL 07022/ 96600 • FAX 07022/9660103
TEXT DISPLAY LCA 042
18
DIAGNOSE-SYSTEM LCA 285.0
EXTERNE VARIABLE
2.1 VOLTAGE SUPPLY
To ensure correct operation of the text display LCA 042
observe the following instructions as regards the voltage
supply:
Use the LCA 042 only with operating voltages in the
range indicated.
Undervoltage transients of down to 9.5V for <= 1ms
are permissible.
An operating voltage U
B
of 35V= is permissible for <=
100ms (repetition frequency approx. 1Hz).
The LCA units may be driven only with “protective low
voltage” in accordance with German Electrical Stan-
dard VDE 100. The driver transformer must conform to
German Electrical Standard VDE 0551. According to
this standard one side of the operating voltage may be
grounded: we recommend that this be done when
working with our units.
If one side of the operating voltage is not grounded,
you will require your own driver transformer to
operate the LCA 042.
The LCA 042 is grounded via the housing. Use a short
ground connection wire with a large cross-sectional
area (>= 2.5mm
2
)
If the operating voltage is also used to drive
inductances, protective circuitry must be
incorporated for them (recovery diode, etc.).
Operating voltages greater than those indicated
(+33V) can destroy the unit. In this case our guaran-
tee does not apply.
SPS
LCA
~ 380 VAC
3/N/PE 380 VAC
= 24 VDC
+ 24VDC
0V DC
L 1
L 2
L 3
N
PE
Operating voltage
U
B
:
24V= (<=5% residual ripple)
acc. to DIN 19240
U
Bmax
:
33V=
U
Bmin
:
19V=
Current consumption
:
≤
350 mA (+24V=)
