Danfoss vlt aqua Programming Guide

Refer to Staging Mode and Alternation , par. 25-56, and Figure
7-5 for description of staging and alternation.
2.21.6. 25-8* Status
Readout parameters informing about the operating status of the cascade controller and the pumps
controlled.
25-80 Cascade Status
Option: Function:
Disabled
Emergency
Off
In Open Loop
Frozen
Jogging
Running
Running FSBW
Destaging
Alternating
Lead Not Set Read out of the status of the Cascade Controller.
Disabled : Cascade Controller is disabled ( Cascade Controller ,
Par. 25-00).
Emergency : All pumps have been stopped by means of a Coast/
Coast inverse or an External Interlock command applied to the
frequency converter.
Off : All pumps have been stopped by means of a Stop command
applied to the frequency converter.
In Open Loop : Configuration Mode , Par. 1-00, has been set for
Open Loop. All fixed speed pumps are stopped. The variable
speed pump will continue to run.
Frozen : Staging/destaging of pumps has been locked and ref-
erence locked.
Jogging : All fixed speed pumps are stopped. When stopped, the
variable speed pump will run at jog speed.
Running : A Start command is applied to the frequency converter
and the cascade controller is controlling the pumps.
Running FSBW : The frequency converter is tripped off and the
Cascade Controller is controlling the fixed speed pumps based
on
Fixed Speed Bandwidth , par. 25-22.
Staging : The Cascade Controller is staging fixed speed pumps.
Destaging : The Cascade Controller is destaging fixed speed
pumps.
Alternating : The Lead Pump Alternation , par. 25-50, selection is
different than
Off [0] and an alternating sequence is taking
place.
Lead Not Set : No pump available to be assigned as variable
speed pump.
VLT
®
AQUA Drive Programming Guide 2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark 241
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled