Uniflair RAN Series, Инструкция по эксплуатации

Страница: 28 / 33

MANUALE DI ISTRUZIONI / INSTRUCTION MANUAL
RADIATORI REMOTI / DRY COOLERS
RAN-RAL - Rev 1.0. - 11-10-2002 IT - EN
27 (32)
Note: the calibrations described above have already been checked during the final test inspection phase.
Contact the UNIFLAIR Technical Service prior to proceeding to modification.
The adjustment of the work parameters can be divided in two phases:
1. the definition of the voltage regulator's work limit values: the P4 and P5 values are set in this phase.
2. the definition of the voltage regulator's work range: the P2 and P3 + P6 and P7(set-point 2) values are set in
this phase.
Phase 1 must be followed by Phase 2 with the definition of the Proportional Band and the Set-point.
Minimum CUT OFF voltage regulation (trimmer P5) - PHASE 1
P5
CUT /OFF
m = 0%
M = 95%
J1=1
This trimmer adjusts the minimum rotation voltage that can be delivered to the fan during
automatic operation in which the fan will never be fed with a voltage that is lower than the
established value, which would not be sufficient to deliver the torque required to keep the fan
rotating.
For this control, the
J1 configuration jumper is in position = 1
The P5 trimmer permits the establishment of the rotation start point during rotation (CUT-OFF) , or in other
words, the minimum voltage that can be supplied to the load during automatic operation before the enabling or
disabling of the automatic control.
Proceed as follows to correctly adjust the
'CUT-OFF' voltage:
1) Rotate the P5 trimmer (manual speed control with J1=2 ) by starting from the "m" position until reaching the
minimum rotation voltage value desired.
2) Shift the J1 configuration jumper from position 2 to position 1
3) During automatic adjustment, the load will be fed starting from the minimum voltage value selected.
Maximum operating speed regulation (trimmer P4) - PHASE 1
P4
max. speed
M = 100%
m = 0% This trimmer limits the maximum operating speed (from 100% - 0%).
Used to limit the fan's maximum air flow or operating noise level at peak speed.
This value is set in the Factory to the maximum value (M) that corresponds to the
maximum speed equivalent to 100% of the automatic control value.
The P4 trimmer can be used to limit the maximum operating voltage when the automatic control signal is at
maximum value.
In order to set the Maximum limit value, the Max. automatic control value in °C for the voltage regulator must
first be generated in order to make the fans rotate at maximum speed.
Starting from the "M" position, rotate the P4 trimmer clockwise until reaching the value desired as the maximum
limit output voltage.
опубликовано topclimat.ru