AKO AKO-16520, User Manual

Page: 13 / 32

1652H302 Ed.03
13
Compressor protection timing
Parameter C4 allows for selection of the type of timing to be applied to protect the compressor. These delays
prevent continuous compressor starts and stops.
These timings affect the COOL and AUX 1 relays (if
o00 =1)
OFF-ON (C4=0) : Minimum time in OFF mode before each start-up.
OFF-ON / ON-OFF (C4=1) : Minimum time in ON and OFF mode for each cycle.
The delay time is defined by means of parameter C5 ; if C5 =0, timing is disabled.
Door management
Door management allows for the installation's behaviour to be controlled, should the cold room door open
through parameters
C22 and C23 .
Parameter C22 defines whether cold production should be stopped if the door opens. If C22 =1, when the door
opens, the fans stop and, 15 seconds later, the solenoid closes (COOL relay).
Parameter
C23 defines the maximum time, in minutes, that the installation can remain without producing cold
whilst the door is open. If C23 =0, cold is not produced with the door open.
Management of door frame resistor
(only devices with 5 relays)
If the Set Point is equal to or below -4°C and the relay AUX 2 has been configured as “door frame resistor”
(
o10 =4), the resistor is activated (relay ON) when the temperature of the cold room drops below -3°C, and is
deactivated (relay OFF) when 0°C is reached.
ON ON
OFF-ON (C4=0) OFF-ON / ON-OFF (C4=1)
SP SP SP+C1 SP+C1
C5
C5 C5
OFF OFF
COOL COOL
SP
Door
C23
COOL
Open
ON ON
SP+C1
Configuration:
C22: 1
C23: 5
S1