Virtual inputs and outputs – Rockwell Automation 865 Differential Protection Relay User Manual
Page 121
Control Functions
6-3
865-UM001A-EN-P – July 2009
Table 6.4 – Summary of Digital Inputs
DI Terminal
Operating
voltage
Availability
X3:1
48V
DC
supply for DI1…6
1
X3:2
2
X3:3
3
X3:4
4
X3:5
5
X3:6
6
X3:7
Internal 48V
DC
Allen-Bradley 865
19
X6:1…2
External 18…865 V
DC
50…250 V
AC
ARC card with 2 DIs
Virtual Inputs and Outputs
There are four virtual inputs and six virtual outputs. The four virtual
inputs acts like normal digital inputs. The state of the virtual input
can be changed from display, communication bus and from
SetPointPS. For example setting groups can be changed using virtual
inputs.
Table 6.5 – Parameters of Virtual Inputs
Parameter
Value
Unit
Description
Set
VI1 ... VI4
0
1
Status of virtual input
Events On
Off
Event
enabling
Set
NAMES for VIRTUAL INPUTS (editable with SetPointPS only)
Label String
of
max.
10 characters
Short name for VIs on the
local display
Default is "VIn", n=1...4
Set
Description String
of
max.
32 characters
Long name for VIs. Default is
"Virtual input n", n=1...4
Set
Set = An editable parameter (password needed)
The six virtual outputs do act like output relays, but there are no
physical contacts. Virtual outputs are shown in the output matrix and
the block matrix. Virtual outputs can be used with the user's
programmable logic and to change the active setting group etc.