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UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
9.2 Digital outputs
The device has 3 digital outputs, which:
·Are electrically isolated from the evaluation elec-
tronics via optocouplers.
·Have a common reference.
·Are
not
short-circuit proof.
·Require an external auxiliary voltage.
·Can be used as impulse outputs.
·Are able to switch direct and alternating current
loads.
·Can be controlled via Modbus.
·Output the results of comparators.
CAUTION
Material damage due to connection errors.
The digital outputs are not short-circuit proof!
Connection errors can therefore lead to damage to
the connections.
Make sure that the wiring is correct when con-
necting the outputs.
CAUTION
Measurement error when used as a pulse out-
put.
When the digital outputs are used as pulse outputs,
measurement errors can occur due to residual
ripple.
For the supply voltage (DC) of the digital inputs
and outputs, use a power supply whose residu-
al ripple is less than 5% of the supply voltage.
NOTE
·Functions for the digital outputs can be config-
ured easily and clearly in the GridVis
®
software
(see www.janitza.de).
·Use of the GridVis
®
software requires a con-
nection between the device and the PC via an
interface.
UMG 96-PA-MID/MID+:
·The "MID active energy" function is provided on
digital output 1 (terminal 21/22) and cannot be
changed or configured in any other way!
Fig.
Connection example of two relays to the digital
outputs
K2
External
auxiliary voltage
+
24 VDC
-
K1
DC
DC
21
22
23
24
Digital Ouput 1
Digital Ouput 2
Digital Ouput 3
UMG 96-PA
LED
LED
LED
9.3 LED status bar
The LED status bar on the back of the device
shows the different states of the inputs and out-
puts.
Digital inputs
The LED assigned to the respective input lights up
green if a signal of at least 4 mA is flowing at this
interface.
Digital outputs
The respective LED assigned to the output lights
up green when the output is set as active - inde-
pendent of any further connection to this inter-
face.
LED status bar
digital inputs
LED status bar
digital outputs
~
Fig.
Connection of digital/pulse outputs
