ZIEHL-ABEGG Fcontrol FTET10AHMQ-L, Operating Instructions Manual

Page: 26 / 92

7.5.1 Special function for “ piglet nest warm water heating ”
This function regulates the start-up temperature for a hot water heating plate to exactly the desired
setpoint.
Tips:
The function is part of heating circuit 2 of the device.
For this function
“ H2 Mode ” must be set to “ 3 ” .
The input for “ H2 ” must be assigned the temperature source 2 (sensor at E2).
The control range of the heater 2 should be “ 5 K ” with this function (setting in the main menu
“ Heating ” ).
The greater the control range is set, the gentler the control behaviour. If no stable start-up temperature
is reached, the control algorithm must be adjusted. The parameters: H2, KP, KI, KD and TI are
responsible for this. The displayed values are reference values from similar applications. If the
regulator is unstable, the parameter
“ H2 TI ” can be increased fi rst (e.g. by 2 - 3 points). This serves to
slow down the integration behaviour, i.e. the regulator responds a little slower which normally results
in more stability.
The function and position of the start-up temperature is very important for a good regulation. The
sensor must be installed directly behind the mixer valve. This rules out disturbance variables and
enables maximum response behaviour (short controlled member).
Blaffertconst.
Blaffertconst.
Adjustment range: 0.0 - 10.0
Factory setting: 2.9
H2 KP
H2 KP
Setting range: 0 - 200 %
Factory setting: 100 %
H2 KI
H2 KI
Setting range: 0 - 200 %
Factory setting: 1 %
H2 KD
H2 KD
Setting range: 0 - 200 %
Factory setting: 100 %
H2 TI
H2 TI
Setting range: 0 - 200 %
Factory setting: 5 %
The start-up temperature is determined by the regulator based on the following relation:
Start-up temp. = (setpoint piglet nest
– room temp.) x eval room temperature
Operating Instructions Fcontrol – model series FTET4/6/10AHMQ-L The Installation menu
L-BAL-E139-GB 2022/03 Index 006 Part.-No.
26/92