VDH ALFA 75 RTDF, User Manual

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Para-
meter Description Parameter Range Default
Value
5
95
96
97
98
99 Software version
Production Year
Production Week
Serial number (x1000)
Serial number (units) 0..255
00..99
1..52
0..255
0..999 -
-
-
-
-
* Technical details.
Type : ALFA 75 RTDF Cool/Defrost Thermostat
Range : -50,0 /+50 ,0
/
C
Su pp ly : 12 Vac/16,5Vdc (-5/+10%)
Read out : 3-digit 7-segm ents display
Sta tus Led’s : COMPR ., FAN and DEFR . On display thru
/
C key
Relays : The three Relays have one comm on;
Ry-1 Cool
SPST (NO ) 250V/8A (cos
n
=1)
Ry-2 Fan SPST (NO ) 250V/8A (cos
n
=1)
Ry-3 Defrost SPDT (NO ,NC) 250V/8A (cos
n
=1)
Control : Th ru pu shb utton s on front.
Front : Polycarbonate IP65
Sensor : 2x SM 811/2m (PTC 1000
S
/25
/
C).
Dimensions : 35 x 77 x 71,5mm (HW D)
Panel-cutout : 29 x 70mm (HW)
Accuracy : ± 0,5 % of range.
- Provided with mem ory protection during power failure.
- Equipped with self-test function and sensor-failure detection.
- Connection with screw-terminals.
- Special version on request available.