Technical data

Instructions Manual cod. 1592001120
1592001121 Universal-R3 GB 19.11.2004.doc
rel. 1.0
Pa. 14 / 15
17. REMOVING SECURITY CODE PROTECTION
It is possible to allow access to any parameter without using the security code. To do this, go into Pr2 as previously
described. Scroll to the label of the parameter you require and then press the SET and
buttons in quick succession.
The small alarm LED will light up indicating that access to this particular parameter is now possible without the security
code. It’s label will now appear when you are in the first programming level and it’s value can be altered. Remove
access using the same procedure and the LED will go out.
18. MOUNTING
The Universal-R should be mounted in a panel, in a 29 x 71 mm hole, and fixed using the special brackets supplied.
Ambient temperature for correct operation is 0 - 60 °C. Avoid places subject to strong vibrations, corrosive gases,
excessive dirt or humidity, 20 – 85% non condensing. Make sure air can freely circulate through the cooling holes slots
at the back of the controller.
19. ELECTRICAL CONNECTIONS
The instrument is provided with screw terminal block to connect cables with a cross section up to 2,5 mm
2
. Before
connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables
from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current rating
for each relay, in case of heavier loads use a suitable external relay.
20. PROBES
It is recommended to place the thermostat probe away from rapid air streams to correctly measure the average room
temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is
formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.
21. TECHNICAL DATA
Housing: Self extinguishing ABS.
Size : Frontal 32x74 mm; depth 70mm;
Mounting : Panel mounting in a 71x29 mm panel cut-out.
Frontal protection : IP65
Connections: Screw terminal block ≤ 2,5 mm
2
wiring.
Power supply : 12Vac/dc, -10% +15%.
Power absorption: 3VA max.
Display : 3 digits, red LED, 14,2 mm high.
Inputs : 1 or 2 probes, PTC or NTC
Probes (supplied) : 2 x NTC, range –40 / + 105c with 2 metre cables
Relay outputs :- Amps Resistive ( Inductive )
compressor : SPDT relay 8(3)A, 250Vac
defrost : SPDT relay 8(3) A, 250Vac
fans : SPST relay 8(3)A, 250Vac
alarm : SPDT relay 8(3) A, 250Vac
Other output : Buzzer for an acoustic signal of alarms
Data storing In non-volatile memory (EEPROM).
Ambient temperature: 0 to 60 °C.
Ambient humidity: 20 to 85% (no condensing)
Storage temperature: -30 to 85 °C.
Operating range: PTC: -50÷150°C (-58÷302°F); NTC: -50÷110°C (-58÷230°F)
Resolution: 0,1 °C or 1 °F (selectable)
Accuracy at 25°C: (range –40 to50°c) ±0,5 °C ±1 digit