Firmware V3.15
21.04.2021
53/401
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5.5.8.3 Fan control - controller type UA 131 LS with enhanced fan control
Controller type: only UA 131 LS with enhanced fan control
The enhanced functions for the fan control must be activated via the DIP switch S3 (5=ON) on the circuit board
of the case controller.
Apart from the terminal assignment of the 230 V relay outputs, the terminal assignment is identical to the
terminal assignment of the UA 131 (see
Belegung der Analogeingänge für Temperaturfühler
).
The fan relay operates inverted:
if the controller switches on the fan, the relay contact (15/16) is closed;
if the controller switches off the fan, the relay contact (15/16) is opened.
Parametrisation of the enhanced fan control
The relevant parameters for the fan control are in the Operation menu of the case controller under menu 2
Setpoints - 6 Fans and can be used for the normal setpoint and the alternative setpoint. The desired operating
mode must first be selected for the fan control. This is done via the parameter
BetrArt
.
The following four parameters are available for the operating mode:
DAUERLAUF
(continuous operation)
VORLAUF
(flow)
NACHLAUF
(overrun)
VERZ.N.ABT
. (delay after defrost)
The two parameters
Lüfterverzöger
and
Lüfter Über
are used for control of the fans via the temperature at the
evaporator sensors R1.1 and R1.3. These parameters are not effective in all operating modes.
Function description of the 4 operating modes
1. Operating mode "continuous operation"
The fan relay is always switched on in this operating mode.
When using the fan control,
no
alarm signalling via the 230 V alarm relay can be performed. However,
the 24 V DC output at the terminals 81 / 82 / 83 can be used for alarm signalling.
Содержание UA 400
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