LD30x
Typical input circuit (standard version with HTL inputs):
PNP
4,7k
GND
GND
+24V int.
Input
4,7k
GND
Input
+24V int.
NPN
The counting inputs A and B are designed for input frequencies up to 100 kHz
(with all counter modes) and up to 25 kHz (with all other operating modes).
The minimum pulse duration on the Reset input must be 500 µsec. (maximum
frequency 1 kHz)
All inputs are designed to receive impulses from an electronic impulse source.
Should you exceptionally need to
use mechanical contacts
, please connect an
external capacitor between GND (-) and the corresponding input (+). With a
capacity of 10 µF, the maximum input frequency will reduce to 20 Hz and
miscounting due to contact bouncing will be eliminated.
4.4 Adjustable analogue output (LD301 model only)
A voltage output is available, operating in a range of 0 … +10 V or –10 V ... +10
V according to setting. At the same time, a current output 0/4 – 20 mA is
available. Both outputs refer to the GND potential and the signal polarity
changes with the sign in the display. The outputs provide a 14-bit resolution
and the response time at each change of the measuring value is approx. 7 msec.
(f
in
> 143 Hz).
The maximum current of the voltage output is 2 mA and the load on the current
output can vary between 0 and max. 270 ohms.
4.5 Optocoupler / transistor outputs (LD302 model only) *
Outputs provide programmable switching characteristics and are potential-free.
Please connect terminal 8 (COM+) to the positive potential of the voltage you
want to switch (range 5V ... 30V). You must not exceed the maximum output
current of 150 mA. If you switch inductive loads, please provide filtering of the
coil by means of an external diode.
Opto
Opto
33 R
(8)
(9)
(10)
Com+ (5 ... 35 V)
Output 1 (max. 150 mA)
Output 2 (max. 150 mA)
33 R
Preset 2
Preset 1
* For relay outputs please refer to model LD305.
MAN LD30x E 1.0.odt
Electrical connections
6 of 40
