46
promesstec GmbH
I Niedersachsenstraße 4 I D- 48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
E-Mail: [email protected] I Internet: www.promesstec.com
The ON-OFF control leads to strong oscillating process fluctuations, the hysteresis
should be set to a sensible minimum to reduce fluctuations. If the ON-OFF control is
activated (PB1 = 0), the parameters are TI1, TD1, CYC1, OFST, CPB and PL1
hidden and without function, the hand operation, self-tuning and bumples transfer
(BPLS) are deactivated.
Heating P or PD control:
Select REVR for OUT1, set TI1 to 0, SP1 is the
setpoint, TIME is for setting the heating time.
Note:
The TIMR parameter in A1FN or A2FN is
selectable with this setting, the offset (OFST) can be set
at
TI1 = 0 and is used for manual adjustment.
Set CYC1 depending on the output module.
Typical settings:
Output SSR:
CYC1 = 0,5
~
2 sec.
Output relay:
CYC1 = 10
~
20 sec.
Analogue output:
CYC1 = Not adjustable (hidden)
O1HY is hidden when
PB1 ≠ 0.
OFST function: The OFST parameter measures in % in the range 0 - 100.0 %. After
control, when a stable process situation is reached, when the process value is lower
than the setpoint (assumed to be 5°C lower) and PB1 = 20°C. This corresponds to
25%, then the OFST of 25% causes the regulation, with a higher process value the
other way round.
After adjusting the OFST value, the process value varies around the setpoint.
If P-control is activated (TI1 = 0), self-tuning and automatic adjustment are
deactivated.
Setting P-control:
OUT1 =
TI1 = 0
CYC1 (at relay
or
SSR
– O1TY select)
Parameter:
SP1, OFST, TIME (when
released),
PB1
≠
0, TD1
