Diff. cont
Identification
Control
Control
External control
Back
5 : Settings control
OFF/ON
OFF/ON
standard
medium
fast
OFF/ON
OFF/ON
0.00 K
T
∆
Operating
48
HAAKE Phoenix II P1
Version 3.07
14.5 Working with internal or external control sensors
14.5.1 Selection between external and internal control
The internal control sensor is an immovable fixture. Any
commercially available Pt100 sensor equipped with 4-wire
technology can be used as the external sensor. For connect-
ing up see chapter 18.
The circulator must be switched off and on again after insert-
ing an external sensor.
Select Settings, then Control and choose if you want to work
in the INTERNAL or EXTERNAL mode, n which you switch
by means of function key “Intern/Extern“.
”External” mode can only be selected if a PT100 sensor is
connected and the follow--up control is not activated.
14.5.2 Speed of the external control.
Different control speeds can be selected in EXTERNAL
mode.
14.5.2.1. Automatic setting
Activate ”Identification” before starting the unit. The control-
ler automatically determines the optimum settings for the
system. Depending on the system, determination of the pa-
rameters can take a few minutes. The determined parame-
ters are saved as ”I values”.
14.5.2.2. Manual adjustments
To make manual adjustments to the external controller
speed, it is necessary to deactivate ”Identification”.
Select Settings
→
Control
→
Control
The setting ”I value” uses the parameters that were deter-
mined in the last automatic identification. This setting is rec-
ommended if the temperature control system was not
changed or was changed only slightly, or if temperature pro-
grams run repeatedly in the range +50
°
C at around the tem-
perature at which the identification was carried out.
The unit is preset to the control speed „standard“. Over-
swinging is thus avoided for the most part. The time until the
desired temperature has been reached can however be
quite long. If you would like to shorten this, select „medium“
or „fast“. When using the setting „fast“ you should reckon
with quicker control times.
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