LU-VE URT Instrucciones página 16

ENGLISH
Characteristics
URT is a series of electronic 3 phase voltage variators using
the phase cut principle.
A microcontroller carries out all the necessary regulating and control functions
according to the multiple possibile configuration modes (rtE, rPr, rS) for every
cut. The selected mode is programmed using a keypad and a 6 digit display
which also permit reading the settings and the scale measured.
This new series follows the style of the preceding analog series rtE, rPr, rS ha-
ving a double command input, with the following improvements:
• A single model per cut which can be configured at any time in one of the
numerous possibile modes simply by recalling from the keypad one of the de-
fault settings (rtE – rPr – rS), but retaining the possibility of modifying, whe-
never necessary, the values of the default parameters.
• Two complete, independent regulation SETs, selected with the "SP" input.
• For every regulation SET, in addition to the standard settings of Set Point -
Proportional Band - Minimum and Maximum RPM% Limits – Starter, with ac-
celeration/deceleration time, the following features have been added:
- Maximum RPM% Night Limit (the same one for both Set Points) activated
by input S5 (AUX)
- 3 RPM% jump zones, in order to avoid any zones of greater sound distur-
bance (the same ones for both set Points).
- Two input values can be chosen to force the fan speed at ZERO %RPM and
at MAX %RPM. The work lag can be defined separately.
• A programmable analog output which can be used as an alternative to dri-
ve:
- Up to six slave 0-10 Vdc units.
- An external unit to control humidification (solenoid valve commands) ope-
Supply monitoring
EMC filter
PROTECTION
Overvoltage
Materials
CASING Protection rating
Environmental pollution
Fire resistance
Casing
INSULATION
Control Circuit
Temperature
WORKING
CONDITIONS
Vibrazioni
INSTALLATION Wall mounted vertically only
Directive 89/392CEE
Directive 73/23/CEE
TECHNICAL
STANDARDS Directive 89/336/CEE
Nominal
Type Current
Amp
URT312 12 286
URT320 20 351
URT326 26 361
URT340 40 416
URT360 60 460
URT390 90 586
Protection – Installation – Technical Standards
Continuous monitoring of the presence of all 3 phases: if one phase cuts out, the device is locked
out and the display shows LED L2=ON and LED RL1=OFF > RL1=OFF
EN55011 ( CEI 110-6) Class B
Conformity for PDS system applications (Power Drive Systems) to civilian limits
In the presence of a DIFFERENTIAL protection system, use switches with current dispersion
to earth ≥ 100 mA
EN61000-4-5 overvoltage category II ( 4kV)
GW-Plast 120°C (max temperature 120°C) e allumininium
IP 55
Strong
Category D
Class I ( using protection cable connected to ground)
4000 V between the control input and the parts parts having the power supply
Working: -20 T 50 ( from –20°C to + 50°C ) for temperatures < -10°C use S2
Storing : -30 T 85 ( da –30°C a + 85°C )
Less than 1G (9.8 m/s
CEI-EN 60204-1 : " Machinery safety "
EN 50081-2 Generic standard for industrial environment emission
EN 50082-2 Generic standard for industrial environment emission
EN 55011
EN 55011
ENV 50140
ENV 50141
IEC 801-4
IEC 801-2
Dimensions (mm)
A B C D E
196 130 255 153
237 181 317 185
237 201 317 185
318 178 397 275
318 228 397 260
404 280 470 376
URT
rated by the same input signal to the controller using a specific Set Point (de-
fined as +/- shift from the main ventilation Set Point) and Proportional Band.
Once the speed regulator Set Point has been set, in "bar" for condensers and
in "C" for liquid chillers, the controller acts on the speed of the fans in order
to maintain, near this desired level, the condensing pressure or the tempera-
ture of the liquid.
STANDARD versions are available:
V 50/60 Hz (other voltages on request).
Operation
By phase cut, totally controlled on the three phases, to partialize the effecti-
ve current applied to the load, without connecting the Neutral conductor.
The device can be equipped with a keyboard to function in the following mo-
des:
• rS POWER UNIT: the output voltage varies as a function of the command
signal present at the N.1 input, rising with the increase of the command si-
gnal.
• rtE/rPr CONTROLLER: The output voltage varies as a function of the com-
mand signal, rising with the increase of the Temperature or the Pressare. The
signals are received from two sensors (IN1 and IN2), adjustment of the output
voltage is dependant on the signal with the higher value.
A MEI Input Expansion Module is available if necessary to connect more than
two tranducers. Up to four sensors/signals can be connected in mA – Vdc –
NTC for every input of the controller, maintaining the possibility of selecting,
as the reference for the regulation, the Maximum/Minimum value.
2
)
class B, for radiated noise
class B, for conducted noise
(IEC 801-3) for susceptibility (supply)
for susceptibility conducted by signal lines
for quick transients (burst/high frequency noise)
for electrostatic discharges (ESD)
Weight
F Ø G Kg
255 Ø 6 3,3
320 Ø 6 5,5
320 Ø 6 8,0
385 Ø 6 11,0
410 Ø 12 17,0
532 Ø 16 25,0
16
12A, 20A, 26A, 40A, 60A, 90A
B
ø G
E
PG
poliamide PA6
Classe V2
IP 68
all at 400
C