3.4.3
Control Word 2
In addition to the function bits for the most important drive functions in the basic control block,
control word 2, in its more significant section, contains the virtual input terminals. These terminals
are freely programmable input terminals, which are not physically available however since the
requisite hardware (option pcb) is not fitted. These input terminals are then mapped to the virtual
input terminals of the fieldbus. Each virtual terminal is then assigned to an optional and physically
not available input terminal and can be programmed to any function. This MOVITRAC
®
31.. feature
allows you to individually implement your fieldbus drive application making full use of all unit
functions via the fieldbus interface.
Figure 17 shows the assignment of the control word 2 for the standard MOVITRAC
®
31.. unit. As
the terminals 48 and 49 are standard in the basic version of the inverter, here only the optional input
terminals 50-54 are available as virtual terminals.
You can program any function to the virtual input terminals. Table 16 shows the virtual input terminal
assignment for the standard MOVITRAC
®
31.. unit (with a digital input terminal expansion) and their
functionality.
Virtual
input terminal
Assigned
to terminal
Functionality
1
50
Terminal function programmable to
P605 TERMINAL 50
2
51
Terminal function programmable to
P606 TERMINAL 51
3
52
Terminal function programmable to
P607 TERMINAL 52
4
53
Terminal function programmable to
P608 TERMINAL 53
5
54
Terminal function programmable to
P609 TERMINAL 54
6-8
–
None
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
9: Virtual terminal 2 =
terminal 51
15: Virtual terminal 8
reserved
MOVITRAC 31..
digital input terminal expansion
®
with
0: Controller inhibit/enable
1: Enable/rapid stop
3: Hold control
4: Ramp generator selection
6: Reset
5: Parameter set selection
7: Reserved
2: Enable/stop
Permanently defined
Virtual input terminals
8: Virtual terminal 1 =
terminal 50
10: Virtual terminal 3 =
terminal 52
11: Virtual terminal 4 =
terminal 53
12: Virtual terminal 5 =
terminal 54
13: Virtual terminal 6
reserved
14: Virtual terminal 7
reserved
00327AEN
Fig. 17: Control word 2 for the MOVITRAC
®
31B basic unit with digital input terminal expansion
3
Inverter Control
with Process Data
MOVITRAC
®
31.. Fieldbus Unit Profile
31
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