JULABO FW95-SL Ultra-Low Refrigerated Circulators - Manual (Page 51)

HL, SL
51
9.4.5. ActVar - actuating variable
The variable (ACTuating VARiable) corresponds to the extent to which
the heater or cooling unit of the circulator is controlled. Heat or cold is
applied to the bath according to this variable. If this happens with the
control electronics of the circulator, called > control < in this particular
case, the bath temperature is exactly heated and maintained constant at
the adjusted setpoint.

Programming of variables for the parameters > SERIAL < or >
EPROG < is only accepted, if the unit is in Start mode.
Possible parameters:
control – The internal control electronics of the circulator controls the
heater and the connected cooling unit. Self-tuning is possible..
(factory setting)
serial – – The heater or the connected cooling unit receives the control
signal via the serial interface. Self-tuning is not possible.
Eprog - The heater or the connected cooling unit receives the control
signal via the E-Prog input. Self-tuning is not possible.
- Setting requires electronic module.
Important:
Set the parameter >Eprog< and the input variables also in the menu
>Inputs/Outputs< (see page 75).
Note:
The E-Prog input can only be used either under menu item >Setpoint
ext< or under menu item > ActVar <.
Warning:
The working temperature range of the circulator is determined during configuration. If set
to >Control<, this range cannot be exceeded.
If set to > Serial < and > Eprog <, heat or cold is applied to the bath without control. The
permissible maximum temperature can be exceeded. The user has to take adequate
precautions for temperature control.
Materials, such as gaskets or insulations for example, may be damaged or destroyed, if
the permissible maximum temperature is exceeded.
The safety and warning functions > < of the instrument must always be used to
their fullest capacity.