UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
www.janitza.de
32
9.1.1
S0 pulse input
Each digital input is designed for the connec-
tion of an S0 pulse generator according to DIN
EN62053-31.
You need an external auxiliary voltage with an
output voltage in the range of 18 .. 28 VDC and a
resistor of 1.5 kohms.
-
+
24 VDC
External
auxiliary voltage
S0 pulse
generator
1.5k
Fig.
Example for the connection of an S0 pulse generator
to digital input 1.
17
18
19
20
2k21
2k21
2k21
2k21
2k21
2k21
Digital
Input 1
Digital
Input 2
Digital
Input 3
UMG 96-PA
Digital inputs 1-3
LED
LED
LED
9. Digital inputs and outputs
9.1 Digital inputs
The device has three digital inputs for the connec-
tion of, for example, one signal generator each. If
a signal is present, the corresponding LED lights
up green.
The device recognizes an input signal at the digi-
tal input if:
·A voltage of at least 18 V and at most 28 V DC
(typically at 4 mA) is present.
·A current of at least 0.5 mA and at most 6 mA
flows.
The device has:
·
3 digital inputs
and
·
3 digital outputs
-
+
Fig.
Connection of digital inputs
Fig.
Example for the connection of the external
switching contacts S1-S3 to the digital inputs 1,
2 and 3.
17
18
19
20
2k21
2k21
2k21
2k21
2k21
2k21
Digital
Input 1
Digital
Input 2
Digital
Input 3
-
+
24 VDC
S1
S2
External
auxiliary voltage
UMG 96-PA
Digital inputs 1-3
S3
LED
LED
LED
NOTE
Observe the polarity of the supply voltage.
CAUTION
Transmission error and material damage due
to electrical malfunction.
With a cable length of more than 30 m (32.8 yd),
there is an increased probability of transmission
errors and damage to the device due to atmo-
spheric discharge!
Use shielded cables for the connections to the
digital inputs and outputs!