Danfoss VLT HVAC Basic Drive FC 101 Programming Guide

22-80 Flow Compensation
Option: Function:
[0] * Disabled Disable ow compensation of setpoint.
[1] Enabled Enable ow compensation of setpoint.
22-81 Square-linear Curve Approximation
Range: Function:
100 %* [0 - 100 %] Adjusts shape of control curve. 0% =
straight line, 100% = maximum parabola.
22-82 Work Point Calculation
Option: Function:
[0] * Disabled Disable calculation of working point at rated
speed.
[1] Enabled Enable calculation of working point at rated
speed.
22-84 Speed at No-Flow [Hz]
Range: Function:
Size related* [ 0 - 400.0 Hz] Set the motor speed in Hz at
which ow is 0 and minimum
pressure is achieved.
22-86 Speed at Design Point [Hz]
Range: Function:
Size related* [ 0.0 - 400.0 Hz] Set the motor speed in Hz at
which system design working
point is achieved.
22-87 Pressure at No-Flow Speed
Range: Function:
0* [ 0 - 4999.000 ] Set the pressure value corresponding to
speed at no ow.
22-88 Pressure at Rated Speed
Range: Function:
4999.000* [ 0 - 4999.000 ] Set the pressure value
corresponding to pressure at rated
speed.
22-89 Flow at Design Point
Range: Function:
0* [0 - 4999.000 ] Set the ow value corresponding to ow at
design point.
3.16 Main Menu - Application Functions 2 -
Group 24
3.16.1 24-0* Fire Mode
CAUTION
EQUIPMENT DAMAGE AND PERSONAL INJURY
Non-interruption of the frequency converter due to re
mode operation could cause overpressure and damage
the system and its components, including dampers, and
air ducts. The frequency converter itself could be
damaged and it may cause damage or re.
•
Ensure that the system is properly designed and
components used are carefully selected.
•
Ensure that the ventilation systems working in
life safety applications are approved by the
local re authorities.
Background
Fire mode is for use in critical situations, where it is
imperative for the motor to keep running, regardless of the
frequency converter’s normal protective functions. These
situations could be ventilation fans in tunnels or stairwells
for instance, where continued operation of the fan
facilitates safe evacuation of personnel in case of a
re.
Some selections of re mode function cause alarms and
trip conditions to be ignored, enabling the motor to run
without interruption.
Activation
Fire mode is activated only via digital input terminals. See
parameter group 5-1* Digital Inputs.
Messages in display
When re mode is activated, the display shows the status
message Fire Mode.
Once the re mode is deactivated, the status message
disappears.
If an alarm with warranty implications (see
parameter 24-09 FM Alarm Handling) occurs while the
frequency converter is active in re mode, the display
shows the status message Fire Mode Limits Exceeded. Once
this status message appears in the display, it remains until
a power cycle is performed. The frequency converter
automatically logs and stores the condition in the memory
and the warranty is still lost in case the frequency
converter is returned for service.
Digital and relay outputs can be congured for the status
messages Fire Mode Active. See parameter group 5-3* Digital
Outputs and parameter group 5-4* Relays.
Access the status messages Fire Mode and Fire Mode Limits
Exceeded via the extended status word.
Parameters
VLT
®
HVAC Basic Drive FC 101
94 Danfoss A/S © 04/2018 All rights reserved. MG18B502
33

Danfoss VLT HVAC Basic Drive FC 101 Specifications

General

Brand	Danfoss
Model	VLT HVAC Basic Drive FC 101
Category	DC Drives
Language	English