Danfoss VLT Programming Guide

25-58 Run Next Pump Delay
Range: Function:
0.1 s* [0.1 - 5.0 s] This parameter is only active if the option selected in par. 25-50 Lead Pump Alternation , is different
from
Off [0].
This parameter sets the time between stopping the old variable speed pump and starting another
pump as a new variable speed pump. Refer to par. 25-56
Staging Mode at Alternation , the illustration
for description of staging and alternation.
25-59 Run on Mains Delay
Range: Function:
0.5 s* [Application dependant] This parameter is only active if the option selected in par. 25-50 Lead Pump Alternation , is different
from
Off [0].
This parameter sets the time between stopping the old variable speed pump and starting this pump
as a new fixed speed pump. Refer to par. 25-56
Staging Mode at Alternation , the illustration for
description of staging and alternation.
3.23.6 25-8* Status
Readout parameters informing about the operating status of the cascade controller and the pumps controlled.
25-80 Cascade Status
Range: Function:
0 N/A* [0 - 0 N/A] Read out of the status of the Cascade Controller.
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark 251
3

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)