Danfoss VLT AQUA Programming Manual page 243

®
VLT AQUA Drive Programming Guide
0
hours
25-85 Relay ON Time
Array [2]
0
hours
25-86 Reset Relay Counters
Option:
*
[0]
[1]
2.21.7. 25-9* Service
Parameters used in case of service on one or more of the pumps controlled.
25-90 Pump Interlock
Array [2]
*
[0]
[1]
[0 – 2147483647 Readout of the value for Pump ON Time. The Cascade Controller
* hours] has separate counters for the pumps and for the relays that
control the pumps. Pump ON Time monitors the "operating
hours" of each pump. The value of each Pump ON Time counter
can be reset to 0 by writing in the parameter, e.g. if the pump
is replaced in case of service.
[0 – 2147483647 Readout of the value for Relay ON time. The Cascade Controller
* hours] has separate counters for the pumps and for the relays that
control the pumps. Pump cycling is always done based on the
relay counters, otherwise it would always use the new pump if
a pump is replaced and its value in par. 25-85, Pump ON Time
counter is reset. In order to use par. 25-04, Pump Cycling, the
Cascade Controller is monitoring the Relay ON time.
Function:
Do not reset
Do reset Resets all elements in
Off
On In this parameter, it is possible to disable one or more of the
fixed lead pumps. For example, the pump will not be selected
for staging on even if it is the next pump in the operation se-
quence. It is not possible to disable the lead pump with the
Pump Interlock command.
The digital input interlocks are selected as
[130 – 132] in
Off
On
running it is immediately destaged. If the pump is not running
it is not allowed to stage on.
®
MG.20.O2.02 - VLT is a registered Danfoss trademark
Relay ON Time
Digital Inputs , par. 5-1*.
[0]: The pump is active for staging/destaging.
[1]: The Pump Interlock command is given. If a pump is
2. Parameter Description
counters, par. 25-85.
Pump 1-3 Interlock
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