6
proportional band BpH=BpC and integral time Ti are calculated.
E
r
C
:initial autotuning cycle error. The cycle didn’t begin correctly. For instance if operating season is heating in 2 pipe
system and the temperature is upper than the setpoint at the begining of autotuning cycle, it is not possible to
start the cycle. The cycle must begin with the voltage in output set to
LEA
(see autotuning cycle drawings indicated
above).
E
r
t :maximum time for autotuning cycle reached. The maximum time for autotuning cycle is 4 hours. If this time is
overcome, this message is shown on the display and parameters Bp and Ti are not calculated.
E
r0
:parameters calculated at the end of autotuning cycle are out of range. The maximum or minimum value of para
-
meter calculated is assigned. For instance, if Ti calculated is upper than 30 minutes (Ti max), Ti is set to 30. If Ti
calculated is lower than 1 minute, the value 1 minute is set to parameter Ti.
Setting range:
no
...
YES
default value:
no
TECHniCaL FEaTUrES
Power supply:
24 Vac +/-10% 50/60 Hz
Sensor:
internal NTC 10K or remote sensor (NT0220-NTC10-02 code).
Measuring range:
0..55°C
Setpoint range:
6..45°C
Resolution:
0.1°C
Inputs:
- remote change-over (only for 2 pipe configuration -> parameters tiP=2 and StA=rEM, see parameters
setting).
- economy function
Outputs:
valves: 1 or 2 outputs 0..10 Vdc (Rload>10Kohm) (see wiring diagrams)
speeds: 6A 24/230 Vac, 50/60 Hz
Operating temperature: 0..45°C, 10..90%r.h. (with no condense)
Power consumption:
1 W
Visualization:
3 characters LCD display
Casing:
144 x 82 x 34 mm
Protection class:
IP30, class II
CE standards:
EN 60730-1, EN 61000-4-2, EN61000-4-4, EN 61000-4-5, EN 5014, ENV 50141
