4.1.8 ∆T-regulation
Please note: Switch-on temperature difference DO must
be at least 1 K higher than the switch-off tempe rature-
difference DF.
DT O:
Switch-on temperature diff.
Adjustment range: 1,0...20,0 K
Factory setting: 6.0
DT F:
Switch-off temperature diff.
Adjustment range
0,5 ... 19,5 K
Factory setting 4.0 K
4.1.9 Maximum store temperature
If the adjusted maximum temperature is exceeded, the store
will no longer be loaded in order to avoid damage caused by
overheating. If the maximum store temperature is exceeded,
will be shown.
Please note: The controller is equipped with a store emer-
gency shutdown function, which prevents the store from
being loaded when the store temperature exceeds 95 °C.
S MX:
Maximum store temp.
Adjustment range: 2..95 °C
Factory setting: 60 °C
DT S:
Set temperature difference
Adjustment range:
1,5..30,0 K
Factory setting: 10.0 K
(PG 67.30 and 69.30)
RIS:
Rise
Adjustment range: 1 ... 20 K
Factory setting: 2 K
(PG 67.30 and PG 69.30)
This function is a standard differential control. If the switch-
on differential is reached (DT O), the pump is operated. The
pump runs at 100% speed for 10 seconds. After this period,
the pump runs at minimum pump speed (nMN = 30 %). If the
temperature difference reaches the adjusted set value (DT
S) (PG 67.30 and PG 69.30 only), pump speed will increase
by one step (10%). If the difference increases by 2 K (RIS)
(PG 67.30 and PG 69.30 only), pump speed will increase by
10 % respectively until the maximum pump speed of 100 %
is reached. The response of the controller can be adapted
via the parameter „Rise“. If the temperature difference falls
below the adjusted switch-off temperature difference
(DT F), the controller switches off.
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