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27-52 Alternation Time Interval
Range:
Function:
0 min
*
[0 - 10080
min]
Alternation Time Interval is the user
settable time between alternations. It is
disabled by setting it to 0.
27-53 Alternation
Timer Value
shows the time remaining until
the next alternation occurs.
27-53 Alternation Timer Value
Range:
Function:
0 min
*
[0 - 10080
min]
Alternation Timer Value is a readout
parameter that shows the time remaining
before an interval based alternation takes
place.
27-52 Alternation Time Interval
sets
the time interval
27-54 Alternation At Time of Day
Alternate at Time of Day allows selecting a specific time of day
for alternating pumps. The time is set in parameter 27-55.
Alternation at Time of Day requires the real time clock to be set.
Option:
Function:
[0]
Disabled
[1]
Enabled
27-55 Alternation Predefined Time
Range:
Function:
Size
related
*
[ 0 - 0 ] Alternation Predefined Time is the time of
day for pump alternation. This parameter
is only available if
27-54 Alternation At
Time of Day
is set to Time of Day.
27-56 Alternate Capacity is <
Range:
Function:
0 %
*
[0 -
100 %]
Alternate Capacity is < requires the lead pump to
be operating below this capacity before time
based alternation will be allowed to take place.
This feature ensures that alternation only takes
place when the pump is running below a speed
where interruption in operation will not affect the
process. This minimizes the system disturbance
caused by alternations. The value is entered as a
% of the capacity of pump 1. Alternate Capacity is
< operation may be disabled by setting this
parameter to 0%.
27-58 Run Next Pump Delay
Range:
Function:
0.1 s
*
[0.1 - 5 s] Run Next Pump Delay is a delay between
stopping the current lead pump and starting
the next lead pump when alternating lead
pumps. This provides time for the contactors
to switch while both pumps are stopped.
(27-58)
130BA597.11
Illustration 5.13
5.1.9 Digital Inputs, 27-6*
27-60 Terminal X66/1 Digital Input
Option:
Function:
[0]
No operation
[1]
Reset
[2]
Coast inverse
[3]
Coast and reset inv
[5]
DC-brake inverse
[6]
Stop inverse
[7]
External interlock
[8]
Start
[9]
Latched start
[10]
Reversing
[11]
Start reversing
[14]
Jog
[15]
Preset reference on
[16]
Preset ref bit 0
[17]
Preset ref bit 1
[18]
Preset ref bit 2
[19]
Freeze reference
[20]
Freeze output
[21]
Speed up
[22]
Speed down
[23]
Set-up select bit 0
[24]
Set-up select bit 1
[34]
Ramp bit 0
[36]
Mains failure inverse
[51]
Hand/Auto Start
[52]
Run permissive
[53]
Hand start
[54]
Auto start
[55]
DigiPot increase
[56]
DigiPot decrease
[57]
DigiPot clear
[62]
Reset Counter A
[65]
Reset Counter B
[66]
Sleep Mode
[78]
Reset Preventive Maintenance Word
[80]
PTC Card 1
[85]
Latched Pump Derag
Parameter Descriptions
VLT
®
AQUA Drive MCO 101/MCO 102
MI38C402 - VLT
®
is a registered Danfoss trademark
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