Emotron AB 01-4429-01r2 Functional Description 99
Change Condition [394]
This parameter determines the criteria for changing the mas-
ter. This menu only appears if Alternating MASTER opera-
tion is selected. The elapsed run time of each drive is
monitored. The elapsed run time always determines which
drive will be the 'new' master drive.
This function is only active if the parameter Select Drive
[393]=All.
Communication information
Change Timer [395]
When the time set here is elapsed, the master drive will be
changed. This function is only active if Select Drive
[393]=All and Change Cond [394]= Timer/ Both.
Communication information
Drives on Change [396]
If a master drive is changed according to the timer function
(Change Condition=Timer/Both [394]), it is possible to
leave additional pumps running during the change opera-
tion. With this function the change operation will be as
smooth as possible. The maximum number to be pro-
grammed in this menu depends on the number of additional
drives.
Example:
If the number of drives is set to 6, the maximum value will
be 4. This function is only active if Select Drive [393]=All.
Communication information
Default: Both
Stop 0
The Runtime of the master drive deter-
mines when a master drive has to be
changed. The change will only take place
after a:
- Power Up
- Stop
- Standby condition
- Trip condition.
Timer 1
The master drive will be changed if the
timer setting in Change Timer [395] has
elapsed. The change will take place imme-
diately. So during operation the additional
pumps will be stopped temporarily, the
'new' master will be selected according to
the Run Time and the additional pumps will
be started again.
It is possible to leave 2 pumps running dur-
ing the change operation. This can be set
with Drives on Change [396]
.
Both 2
The master drive will be changed if the
timer setting in Change Timer [395] has
elapsed. The 'new' master will be selected
according to the elapsed Run Time. The
change will only take place after a:
- Power Up
- Stop
- Standby condition.
- Trip condition.
Modbus Instance no/DeviceNet no: 43164
Profibus slot/index 169/68
Fieldbus format UInt
Modbus format UInt
NOTE: If the Status feedback inputs (DigIn 9 to Digin 14)
are used, the master drive will be changed immediately
if the feedback generates an 'Error'.
A
Default: 50 h
Range: 1-3000 h
Modbus Instance no/DeviceNet no: 43165
Profibus slot/index 169/69
Fieldbus format UInt, 1=1 h
Modbus format UInt, 1=1 h
Default: 0
Range: 0 to (the number of drives - 2)
Modbus Instance no/DeviceNet no: 43166
Profibus slot/index 169/70
Fieldbus format UInt
Modbus format UInt
A
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