Menu Survey; Quick Start - Danfoss AK-PC 520 Instructions Manual

Menu survey

Sequence
1. o61 must be set as the first parameter. This parameter determines which of the two operating interfaces (application mode) are
activated. This must be set via the display keys. It cannot be set via data communication. (Active functions are shown below in shaded
fields.)
2. Quick- start
To get the system up and running quickly so that cooling can be commenced, start it by setting the following parameters (these pa-
rameters can only be set when the regulation is stopped, r12=0):
r23, r28 c08, c09, c16, c29, o06, o30, o75, o76, o81 and finally r12=1.
3. Once the regulation is under way, you can go through the other parameters and adjust them in situ.
Function
Normal display
Shows P0 in EKA 165 (display with buttons)
Shows Pc in EKA 163
P0 reference
Neutral zone
Correction of signal from P0 sensor
Select view; SI or US. 0=SI (bar /°C), 1=US (Psig /°F)
Start/Stop of regulation
Reference offset for P0 (see also r27)
Set regulation setpoint for P0
Shows total P0 reference
( r23 + various displacements)
Limitation: P0 reference max. value
(also applies to regulation with reference displacement)
Limitation: P0 referencen min. value
(also applies to regulation with reference displacement)
Displacement of P0 (ON=active "r13")
Pc reference
Set regulation setpoint for Pc
Shows total Pc reference
Limitation: Pc referencen max. value
Limitation: Pc referencen min. value
Correction of signal from Pc sensor
Pc reference variation.1 and 2 are PI-regulation
1: Fixed reference. "r28" is used
2: Variable reference. Outdoor temperature (Sc3) included in the refer-
ence
3: As 1, but with P-regulation (Xp-band)
4: As 2, but with P-regulation (Xp-band)
Reference offset for Pc
The mean temperature difference across the condenser at maximum load
(dim tm K)
The mean temperature difference across the condenser at the lowest
relevant compressor capacity (min tm K)
This is where you can see the actual pressure (P0) that is being measured
by the pressure transmitter.
This is where you can see the actual pressure (T0) that is part of the regu-
lation. From the sensor which is defined in "o81"
Capacity
Min. ON time for relays
Min. time period between cutins of same relay
Definition of regulation mode
1: Sequential (step mode / FILO)
2: Cyclic (step mode / FIFO)
If a regulation mode with unloaders is selected, the relay must be defined
to:
0: Cut in when more capacity is required
1: Cut out when more capacity is required
Regulation parameter for + Zone
Regulation parameter for + Zone
AK-PC 520 Instructions RI8NM252 © Danfoss 12/2009
o61 =
Para- Min.
meter
1 2
- °C P °C / bar
- °C P °C / bar
r01 0.1°C / 0.1 bar
r04 -50°C /-5.0 bar
r05 0
r12 OFF
r13 -50°C / -5.0 bar
r23 -99°C / -1 bar
r24
r25 -99°C / -1.0 bar
r26 -99°C / -1.0 bar
r27 OFF
r28 -25°C / 0.0 bar
r29
r30 -99.9°C / -0.0 bar 99.9°C/130.0bar 55.0°C / 60.0 bar
r31 -99.9°C / 0.0 bar
r32 -50°C / -5.0 bar
r33 1
r34 -50°C / -5.0 bar
r35 3.0
r56 3.0
r57
r58
c01 0 min
c07 0 min.
c08 1
c09 0
c10 0.1 K / 0.1 bar
c11 0.1 min
SW: 1.0x
Max. Factory
setting
20°C /5.0 bar 4.0°C / 0.4 bar
50°C / 5.0 bar 0.0
1 0
ON OFF
50°C / 5.0 bar 0.0
30°C / 60.0 bar 0.0°C / 3.5 bar
°C / bar
30°C / 60.0 bar 30.0°C / 40.0 bar
30°C / 40.0 bar -99.9°C / -1.0 bar
ON OFF
75°C / 110.0 bar 35°C / 15.0 bar
°C / bar
99.9°C / 60.0 bar -99.9°C / 0.0 bar
50°C / 5.0 bar 0.0
4 1
50°C / 5.0 bar 0.0
50.0 10.0
50.0 8.0
°C / bar
°C
30 min. 0
60 min 4
2 1
1 0
20 K / 2.0 bar 4.0 / 0.4 bar
60 min 4.0
To be continued
5