GE Ecomagination AF-600 FP Programming Manual page 182

Parameter Description
Illustration 3.73 is an example of the slow transfer-staging.
The variable speed pump (top graph) and 1 fixed speed
pump (bottom graph) run before the staging command.
When the [0] Slow transfer command is activated, an
alternation is carried out by ramping the variable speed
pump to parameter F-17 Motor Speed High Limit [RPM] or
parameter F-15 Motor Speed High Limit [Hz], and then
decelerated to zero speed. After a delay before starting
next pump (parameter PC-58 Run Next Pump Delay), the
next lead pump (middle graph) is accelerated and another
original lead pump (top graph) is added after the delay
before running on mains (parameter PC-59 Run on Line
Delay) as a fixed speed pump. The next lead pump (middle
graph) is decelerated to motor speed low limit and then
allowed to vary speed to maintain system pressure.
Illustration 3.73 Staging Mode at Alternation
PC-58 Run Next Pump Delay
Range: Function:
0.1 [0.1 - This parameter is only active if the option
s 5 s] selected in parameter PC-50 Lead Pump
*
Alternation is different from [0] Off.
This parameter sets the time between stopping
the old variable speed pump and starting
another pump as a new variable speed pump.
Refer to parameter PC-56 Staging Mode at
Alternation, Illustration 3.73, for description of
staging and alternation.
PC-59 Run on Line Delay
Range: Function:
0.5 s [par. This parameter is only active if the option
*
PC-58 - 5 selected in parameter PC-50 Lead Pump
s] Alternation, is different from [0] Off.
This parameter sets the time between
stopping the old variable speed pump and
starting this pump as a new fixed speed
DET-620D
AF-600 FP™ Programming Guide
PC-59 Run on Line Delay
Range:
3.24.6 PC-8# Status
Readout parameters informing about the operating status
of the Pump Controller and the pumps controlled.
PC-80 Pump Status
Range:
0 [0 - 25]
*
PC-81 Pump Status
Range:
0 [0 -
*
25]
PC-82 Lead Pump
Range:
0 [0 - par.
*
PC-06]
PC-83 Relay Status
Array [9]
Range:
0 [0 - 4] Readout of the status for each of the relays
*
03/2016 All rights reserved.
Function:
pump. Refer to Illustration 3.73 for description
of staging and alternation.
Function:
Readout of the status of the Pump Controller.
Function:
Pump status shows the status for the number of
pumps selected in parameter PC-06 Number of Pumps.
It is a readout of the status for each of the pumps
showing a string, which consists of pump number and
the current status of the pump.
Example: Readout is with the abbreviation like "1:D
2:O" This means that pump 1 is running and speed
controlled by the frequency converter and pump 2 is
stopped.
Function:
Readout parameter for the actual variable speed
pump in the system. The lead pump parameter
is updated to reflect the current variable speed
pump in the system when an alternation takes
place. If no lead pump is selected (Pump
Controller disabled or all pumps interlocked), the
display shows N1.
Function:
assigned to control the pumps. Every element in
the array shows a relay. If a relay is activated, the
corresponding element is set to On. If a relay is
deactivated, the corresponding element is set to
Off.
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