Signal From The Condenser's Safety Controls; Hourmeter; Forced Control Of Condenser Capacity - Danfoss AKC 25H1 Description

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Example:
A system consists of three condenser steps. Here the definition can be made, as follows:
Output Configuration
Here the cut in and cut out sequence will be, as follows: 1, 2, 3 - 3, 2, 1.
I.e., the relay outputs will be activated in this sequence: DO6, DO5, DO9 - DO9, DO5, DO6.

Signal from the condenser's safety controls

The controller can receive signals on the status of each condenser step's safety circuit. The
signal is taken directly from the safety circuit and is connected to a "DI" input.
This input is a 230 V a.c. input.
If the safety circuit is broken, the controller will cut out the output relay for the relevant step
and give an alarm. The remaining steps will continue the regulation. (A broken connection on
the DI input will cut out the output).
An input from a condenser step and the number of the condenser step are defined.
Input Configuration
A time delay must be defined for the period from the alarm is registered until it is transmitted.
Input Configuration

Hourmeter

The run time of the different outputs is registered by a counter. This registration can be
displayed and reset, if required.
Output Configuration
The hourmeter's range is from 0 to 30,000 hours.

Forced control of condenser capacity

Forced control of the capacity can be arranged, where the normal regulation is disregarded.
The capacity is set in per cent of the regulated capacity.
Condensor Capacity ctrl.
Condenser control, but no compressor control
The controller is normally used for controlling both compressors and condensers. If the
controller is only used for controlling condensers, a missing signal from pressure transmitter
input PO will trigger an alarm signal. To avoid this alarm, a signal may be picked up from
pressure transmitter Pc. Connect terminal 72 to 76 ("s" to "s"). The monitoring function for
POmin is now set at the lowest possible value.
Function description RC.1J.Z4.02 © Danfoss 09/1999
DO Relay No. ( )
Alarm input No. 1..9 DI( ) Type = 2 (2= condenser)
DI( ) Dev. No. ___
Alarm input No. 1..9 DI( ) Del. m ___
DO Relay No.( )
Settings Condenser ctrl.
DO5 Ttype = 2 (2=condenser)
DO5 Dev. No = 2
DO6 Type = 2 (2=condenser)
DO6 Dev. No = 1
DO9 Type = 2 (2=condenser)
DO9 Dev. No = 3
DO( ) Time h
Man. Cap OFF/ON
Man. Cap. % ___
AKC 25H1