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Two separate switching stages for con-
trolling agitator motor and compressor
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Complete milk cooling control with auto-
matic stirring
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Cooling start by robot possible
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Permanent stirring function
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Cooling start delay
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Cooling time monitoring
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Target temperature switchover
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Stand-by function
(agitator and compressor off)
The milk cooling function of the WTS-200 includes
all features that a modern cooling tank control
should offer.
The control can be used for all common tank
models.
It supports both, the devices with compressor
(direct-evaporator) and those with ice-water-
cooling.
The activation of the cooling process can be done
in different ways:
,
manually via button „START COOLING“
,
via digital input „Remote start cooling“ (from
the robot or external button)
The cooling starts now according to pre-set
starting modes:
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Direct or
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with cooling start delay,
The control can be parameterized so that after the
cooling mode is triggered, the start of the compres-
sor is delayed in order to prevent freezing of small
quantities of milk in the tank. This delay takes
place at the first milking only - after the cleaning.
Operation mode
Parameterization
The control unit has various operating modes:
!
OFF mode (tank empty)
The control unit is on stand-by. The display shows 'OFF', the LEDs are out and all
output replays are deactivated..
The following operating modes can only be selected from the OFF mode. It is not
possible to switch directly from one of them to another.
!
Cooling mode
The current milk temperature, as measured, is permanently displayed.
It is possible to switch between two freely adjustable target temperatures by pressing a
button. If the milk temperature exceeds the selected target temperature (T1 or T2) by
the hysteresis value, the compressor relay and agitator are automatically activated.
Once the target temperature is reached, the compressor switches off, while the
agitator continues to operate for the pre-set 'after-stirring' time.
During non-cooling periods the agitator switches on at pre-set intervals in order to
ensure an even temperature throughout the milk.
Independently of this a short or long 'intermediate stirring' period can be selected
during cooling by pressing a button.
Operate by pressing button on foil keyboard:
If the delayed start is activated (parameter c80), cooling starts for the first milking after
a delay. If the cooling button is pressed twice, cooling starts immediately.
Operation via digital input:
The cooling starts immediately - depending on the setting - or with a delayed start
cooling.
!
Continuous stirring mode
The agitator can be switched on from the OFF-mode by pressing a button and press
OFF-button to switch off. After which time the stirrer shuts off again is adjustable. This
action can be discontinued at any time with the OFF-button.
If parameterized the agitator is running indefinitely, but can be switched off with the
OFF-button at any time.
!
Washing mode
The washing timer controls water intake as either by time or level, selected. All running
times (heater, pump, detergent injection) can be set separately. Detergent switchover
from acidic to alkaline can also be set.
The WTS-100-2 controls the various processes and times needed for a thorough wash
fully automatically.
Following a power failure the control unit restarts in the mode in which it was
operating before the outage.
Milk cooling functions
EXCERPT
Funcitonal description COOLING
0. no cooling start delay
Cooling starts immediately
1.
simply no cooling start delay
Cooling starts after a set time.
Cooling immediately temperature-regulated
definied time
temperature-regulated
Summary of Contents for WTS-200
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