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User Instructions Low Temperature Freezers Model UNI
Side 9 | 14
The probes shall be m ounted with the bulb upwards to prevent dam ages due to casual
liq u id in filtr a tio n . It is re c o m m e n d e d to p la c e th e thermostat p ro b e a w a y fro m a ir
stream s to correctly m easure the average room tem perature. P lace the defrost
te rm in a tio n p ro b e am ong the evaporator fins in the coldest place, w here m ost ice is
fo rm e d , fa r fro m h e a te rs o r fro m th e w a rm e s t p la c e d u rin g d e fro s t, to p re vent
prem ature defrost termination.
1. Program one controller with the front keypad.
2.
3. Push S E T key and the End will stop flashing.
4. Turn O FF th e in s tru m e n t re m o v e th e H o t K e y , th e n tu rn it O N a g a in .
NOTE: theE rrmessage is d is p la y e d fo r fa ile d p ro g ra m m in g , in th is c a s e p u s h
again key if y o u w a n t to restart th e u p lo a d a g a in o r re m o v e th e H o t K ey
to a b o rt th e o p e ra tio n .
1. Turn OFF the instrum ent.
2.
3. Autom atically the param eter list of the H ot K ey is d o w n lo a d e d in to th e
Controller memory, the doL message is blinking followed a by flashingnd
E nd.
4. After 10 seconds the instrum ent w ill r e s ta rt w o rk in g w ith th e n e w parameters.
5. Rem ove the H o t K ey.
NOTE th e m e s s a g e E rr is displayed for failed program m ing, in this case turn
th e u n it o ff a n d th e n o n if y o u w a n t to re s ta rt th e d o w n lo a d a g a in o r re m o v e th e
H ot key to a b o rt th e o p e ra tio n .
14. ALARM SIGNALS S
Message
Cause Outputs
P 1
Room probe failure
Com pressor output acc.
P 3
Third probe failure Outputs unchanged
P4
Fourth probe failure Outputs unchanged
H A
Maximum temperature alarm
Outputs unchanged
LA
Minimum tempera tu re a la rm Outputs unchanged
"HA2" Condenser high temperature
It d e p e n d s on the Ac2
"LA2" Condenser low temperature
It d e p e n d s o n
dA
Door open Com pressor according to rrd
EA
External alarm Output unchanged
C A
Serious external alarm
(i1F=bAL)
All outputs OFF
CA
Pressure switch alarm
(i1F=PAL)
All outputs OFF
Probe alarm s P1 , P3 and P4 start som e seconds after the fault in the
re la te d p ro b e ; they autom atically stop som e seconds after the probe resta rts
norm al operation. Check connections before replacing the probe.
Tem perature alarm s H A , LA , H A 2, and L A 2 autom atically
stop as soon as the tem perature returns to norm al values.
Alarm s E A and CA (with I 1F = bAL) recover as soon as the
digita l in p u t is d is a b le d .
Alarm C A (with i1F = PAL) recovers only by switching off and on
th e in s tru m e n t.
Housing: self-extinguishing ABS.
Case: XR30CH fro n ta l 3 8 x 8 0 m m ; d e p th 6 2 m m .
Mounting: XR30CH panel m ountin g in a 7 1 x 2 9 m m p a n e l c u t-out
Protection: IP20; Frontal protection: XR30CH IP65
Connections: Screw term inal block ² wiring.
Power supply: according to the m odel: 12Vac/dc, ± 10% ; 24Vac/dc, ± 10% ;
230 Vac ± 10%, 5 0 /6 0 H z , 1 1 0 V a c ± 1 0 % , 5 0 /6 0 H z
Power absorption: 3VA m ax
Display: 3 digits, re d L E D , 1 4 ,2 m m h ig h ; Inputs: U p to 4 N T C o r P T C p ro b e s .
Digital input: fre e v o lta g e c o n ta c t
Relay outputs: compressor SPST 8(3) A, 250Vac; or 20(8) A 250Vac
AUX: SPDT 8(3) A, 250Vac
Data storing: on the non-volatile m em ory (E E P R O M ).
Kind of action: 1B; Pollution grade: 2; Software class: A.;
Rated impulsive voltage: 2500V; Overvoltage Category: II
Operating temperature: 0÷60 °C ; Storage tem perature: -30÷85 °C.
Relative humidity: 20 85% (no condensing)
Measuring and regulation range: NTC probe: -40÷110°C (-40÷230°F);
PTC probe: -50÷150°C (-58÷302°F)
Resolution: 0,1 °C or 1°C or 1 °F (selectable);
Accuracy (am bient tem p. 25°C): ±0,7 °C ±1 digit.
The X-REP output excludes the TTL output. It´s present in the following codes:
XR30CH- xx2xx, XR30CH xx3xx.
9-40Vdc supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
12Vac/dc supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
24Vac/dc supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
120Vac supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
14.2 OTHER MESSAGES
Pon Keyboard unlocked.
PoF
Keyboard locked
noP
In programming mode: n o n e p a ra m e te r is p re s e n t in Pr1
On the display or in dP2, dP3, dP4: the selected probe is nor enabled
noA None alarm is recorded.
16.1 XR30CH 8A COMPRESSOR
8(3)A250V
20(8)
A250V
.
Comp
Line
16
.
CONNECTIONS
15
. TECHNICAL DATA
13.2 HOW TO PROGRAM AN INSTRUMENT
USING A HOT KEY (DOWNLOAD)
13
.
HOW TO USE THE HOT KEY
13.1 HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)
12.1 PROBE CONNECTION
14.1 ALARM RECOVERY
9-40Vdc supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
12Vac/dc supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
24Vac/dc supply: c o n n e c t to th e te rm in a ls 7 a n d 8.
120Vac supply: connect to th e te rm in a ls 7 a n d 8 .
16.2 XR30CH – 20A COMPRESSOR
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