8.5 Optional digital input/output
card
8 Connections
Technical description
156
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VM55.EN005
The digital input/output option card is inserted in the upper
option card slot in the back of the device and the module is
fasted to the device with two screws.
Figure 8.5-1 The device with digital input/output option card.
Digital inputs of the device can operate in three different
voltage areas. It is also possible to select whether ac or dc –
voltage is used. Digital input threshold of the device is selected
in the ordering code when the relay(s) are being ordered. The
threshold voltage selection is done with jumpers at the factory.
In case that the DI/DO –option card is ordered at the same time
as the relay, the threshold of the option card is also modified at
the factory according the ordering code of the relay.
Sometimes option cards might be ordered afterwards and in
those cases they are not modified at the factory. In cases like
this the cards has to be modified during the commissioning. See
the pictures presented below.
When 110 or 220 V ac voltage is used to activate the digital
Inputs, the AC mode should be selected as shown in the
screenshot below:
Figure 8.5-2 AC mode selection in VAMPSET