Danfoss PTU 025 Programming Guide

0-04 Operating State at Power-up
Option: Function:
Select the operating mode upon reconnection
of the frequency converter to mains voltage
after power-down when operating in Hand
(local) mode.
[0] * Resume Resumes operation of the frequency converter
maintaining the same local reference and the
same start/stop condition (applied by [Hand
On]/[O] on the LCP or Hand Start via a digital
input as before the frequency converter was
powered down.
[1] Forced
stop,
ref=old
Stops the frequency converter, but at the same
time retains the local speed reference before
power-down in the memory. After mains
voltage is reconnected and after receiving a
start command (pressing [Hand On] or Hand
Start command via a digital input), the
frequency converter restarts and operates at the
retained speed reference.
3.2.2 0-1* Set-up Operations
Dene and control the individual parameter set-ups.
The frequency converter has 4 parameter set-ups that can
be programmed independently of each other. This makes
the frequency converter very exible and able to meet the
requirements of many dierent HVAC system control
schemes, often saving the cost of external control
equipment. For example, these can be used to program
the frequency converter to operate according to 1 control
scheme in 1 set-up (for example daytime operation) and
another control scheme in another set-up (for example
night set back). Alternatively, they can be used by an AHU
or packaged unit OEM to identically program all their
factory tted frequency converters for dierent equipment
models within a range to have the same parameters, and
then during production/commissioning simply select a
specic set-up depending on which model within that
range the frequency converter is installed on.
The active set-up (that is the set-up in which the frequency
converter is currently operating) can be selected in
parameter 0-10 Active Set-up and is displayed in the LCP.
Using [9] Multi set-up it is possible to switch between set-
ups with the frequency converter running or stopped, via
digital input or serial communication commands (for
example for night set back). If it is necessary to change
setups while running, ensure that parameter 0-12 This Set-
up Linked to is programmed as required. For most HVAC
applications it is not necessary to program
parameter 0-12 This Set-up Linked to even if change of set
up while running is required, but for very complex
applications, using the full
exibility of the multiple set-
ups, it may be required. Using parameter 0-11 Programming
Set-up it is possible to edit parameters within any of the
set-ups while continuing the frequency converter
operation in its active set-up which can be a dierent set-
up to the one being edited. Using parameter 0-51 Set-up
Copy it is possible to copy parameter settings between the
set-ups to enable quicker commissioning if similar
parameter settings are required in dierent set-ups.
If a set-up is changed via a eldbus, it takes up to 5 s
before the new values are reected via the eldbus.
0-10 Active Set-up
Option: Function:
Select the set-up in which the frequency
converter is to operate.
Use parameter 0-51 Set-up Copy to copy a set-up
to 1 or all other set-ups. To avoid conicting
settings of the same parameter within 2
dierent set-ups, link the set-ups using
parameter 0-12 This Set-up Linked to. Stop the
frequency converter before switching between
set-ups where parameters marked not
changeable during operation have dierent
values.
Parameters which are not changeable during
operation are marked FALSE in
chapter 5 Parameter Lists.
[0] Factory
setup
Cannot be changed. It contains the Danfoss
data set, and can be used as a data source
when returning the other set-ups to a known
state.
[1]
*
Set-up 1
[1] Set-up 1 to [4] Set-up 4 are the 4 parameter
set-ups within which all parameters can be
programmed.
[2] Set-up 2
[3] Set-up 3
[4] Set-up 4
[9] Multi Set-
up
Is used for remote selection of set-ups using
digital inputs and the serial communication
port. This set-up uses the settings from
parameter 0-12 This Set-up Linked to.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
26 Danfoss A/S © 03/2015 All rights reserved. MG11CE02
33

Danfoss PTU 025 Specifications

General

Brand	Danfoss
Model	PTU 025
Category	DC Drives
Language	English