20 Issue
Number:
2
triggered when an under-voltage (UU) trip occurs. Set #17.20 to 1,
store the Unidrive parameters and reset the UD70 to enable this
feature.
5.6 Mapping
Conflicts
When the mapping parameters for the DeviceNet cyclic channels are
set, care must be taken to ensure that there are no clashes with the
mapping of the analogue and digital inputs within the Unidrive. The
Unidrive DeviceNet interface will not indicate any conflict of mapping
parameters. This only applies to analogue and digital inputs, and OUT
data on the DeviceNet network.
If a numerical parameter is written to from two different sources, the
value of this parameter will depend entirely upon the scan times for the
analogue or digital input and the DeviceNet network. Further confusion
may be caused due to the update rate of the display. A parameter may
appear to be steady at a particular value, but occasionally glitch in the
value will be seen. In reality, this value may be changing continuously,
leading to erratic behaviour.
Function Mapping
Parameter
Function Mapping
Parameter
Analogue I/P 1
#7.10
Logic O/P 2
#9.20
Analogue I/P 2
#7.14
Motorised Pot O/P
#9.25
Analogue I/P 3
#7.18
Binary Summer
#9.33
Digital I/P 1
#8.10
Comparator 1 O/P
#12.07
Digital I/P 2
#8.13
Comparator 2 O/P
#12.17
Digital I/P 3
#8.16
Reference Input
#13.06
Digital I/P 4
#8.19
PID O/P
#14.16
Digital I/P 5
#8.21
Cyclic OUT Word 1
#20.06
Digital I/P 6
#8.23
Cyclic OUT Word 2
#20.01
Logic O/P 1
#9.10
Cyclic OUT Word 3
#20.02
Ensure that each Unidrive parameter in the table above has a different
value programmed. A value of 0 will disable analogue and digital
inputs, and -1 will disable the cyclic data channels.
5.6.1 Control
Word
Mapping
Conflicts
The control word provides a method of writing to multiple bit parameters
using one data word. If one of the cyclic data channels is writing to the
control word, the following bit parameters for each Unidrive must not be
controlled by any digital inputs.
Function Param
Function Param
Enable #6.15
Preset ref select bit 1
#1.46
Run Forwards
#6.30
Application bit
#18.31
Jog #6.31
Application bit
#18.32
Run Reverse
#6.32
Application bit
#18.33
Preset ref select bit 0
#1.45
