Danfoss VLT CDS 303 User Manual

Figure 6.12 Thermostat/Pressostat Function
Point A: At start-up the temperature will be higher than
wanted in the evaporator and therefore a higher pressure
than the Cut-in level and the compressor must run.
Another situation could be that the start situation is where
the feedback is between Cut-out and Cut-in. In that case,
no STOP is initiated.
Point B: After some time the cut-out level may be reached
and the compressor must be shut o.
Point C: Cut-in is reached and the compressor is restarted.
NOTICE!
When using the TPF together with the Cascade
Controller further consideration must be taken. The Cut-
Out value should be below the Override Bandwidth
setting (see parameter 25-21 Override Bandwidth). Cut-In
should be set above the set-point and below the value
for Staging Bandwidth (see parameter 25-20 Staging
Bandwidth).
7-80 Thermostat/Pressostat Function
Option: Function:
[0] * O Function is inactive
[1] On Function is active
7-81 Cut-out Value
Range: Function:
1 bar* [-3000 - par.
7-82]
Select the Cut-out Level where the
stop signal is activated and the
compressor stops.
7-82 Cut-in Value
Range: Function:
3 bar* [Par.7-81 –
3000]
Select the Cut-in Level where the stop
signal is de-activated and the
compressor starts.
Parameter Descriptions
VLT
®
Compressor Drives CDS 302/CDS 303
80 Danfoss A/S © Rev. 2013-07-03 All rights reserved. MG34M422
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Danfoss VLT CDS 303 Specifications

General

Brand	Danfoss
Model	VLT CDS 303
Category	DC Drives
Language	English