Technical data

Instructions Manual cod. 1592001120
1592001121 Universal-R3 GB 19.11.2004.doc
rel. 1.0
Pa. 9 / 15
8. PARAMETERS – THEIR FUNCTIONS IN DETAIL
tC Type of Controller : Tells the Universal-R which type of controller it will be operating as.
1 = On / Off refrigeration thermostat – 1 relay &1 probe
2 = Combined thermostat with off cycle defrost timer – 1 relay & 1 probe
3 = Combined thermostat with time initiated & time terminated defrost – 2 relays & 1 probe
4 = Combined thermostat with time initiated & temperature terminated defrost – 2 relays & 2 probes
5 = Combined thermostat with time initiated, temperature terminated defrost + evaporator fan control with delay
after defrost – 3 relays & 2 probes
6 = On / Off heating thermostat – 1 relay &1 probe
PbCProbe Type: Configures the controller to work with PTC or NTC probes. 0 = PTC, 1 = NTC
Hy Differential: ( 0,2°C ÷ 12,0°C ) - Sets the degrees above Set Point at which the compressor cuts in.
Note: with tc=6 (heating applications) the Hy value is automatically set below the Set Point. If the temperature
decreases and reaches set point minus differential the regulation output is activated and then turned off when the
temperature reaches the set point value again.
LS Minimum set point limit: ( -50°C ÷ SET ) - Sets the lower limit of set point adjustment.
US Maximum set point limit: ( SET °÷ 150°C ) - Sets the upper limit of set point adjustment
Ac Anti-short cycle delay: (0 ÷ 30 min) minimum interval between the compressor stop and the next possible restart.
ALc Temperature alarm configuration:
0 = Related to Set Point
1 = Absolute
Note : Related means alarms are linked to the Set Point and will follow it if it is adjusted. In this case ALU & ALL
set degrees over & under Set Point for alarm. Absolute means ALU & ALL will set fixed alarm temperatures, which
are not effected by any Set Point adjustment.
ALU High temperature alarm: ALC = 0 from 0 ÷ 50°C; ALC = 1 from ALL ÷ 150°C
ALL Low temperature alarm: ALC = 0 from 0 ÷ 50°C; ALC = 1 from -50°C ÷ ALU
ALd Temperature alarm delay: (0 ÷ 250min) time interval between an alarm condition occurring and the alarm
signalling.
dAO Delay of temperature alarm at start-up: (from 0 ÷ 720 min; res. 10min) time delay of any temperature alarm
during pull down following “power on”.
OdS Outputs activation delay at start up: (0 ÷ 250min) Time delay before any output relay activates following “power
on”.
CCt Thermostat override: (0 ÷ 990min; res. 10 min) Period during which the compressor will run continuously,
irrespective of temperature. Setting this parameter to 0 prohibits this function.
dAF Defrost delay after fast freezing: ( 0 ÷ 250 min ) time interval between the end of the thermostat override period
and the start of the following defrost related to it.
IdF Interval between defrosts: ( 1 ÷ 250 hours ) Time interval between the beginning of two consecutive defrosts.
dSd Delay start of defrost :( 0 ÷ 59min ) Delay between reaching the defrost interval time ( as defined by parameter
IdF ) and the defrost actually starting. Used to stagger defrosts between multiple systems.
MdF (Maximum) duration of defrost:( 0 ÷ 250 min ) Time duration of defrost when only one probe is in use, or defrost
time out override when second ( evaporator ) probe is in use. Set it to zero to disable defrost cycles.
dtE Defrost termination temperature: (-50 ÷150°C ) Sets the defrost termination temperature. Measured by the
evaporator probe.
dFd Display during defrost: 0 = real temperature; 1 = temperature at defrost start; 2 = set point; 3 = “dEF” label; 4 =
“dEG” label
dAd Defrost display time out: (0 ÷ 250 min). After a defrost, the controller will revert to current temperature display
when the temperature is back down within it’s normal working range, or after the time set in this parameter, which
ever is the sooner.
tdF Defrost type: 0 = electrical heater 1 = hot gas. If set for hot gas, compressor runs during defrost.
Fdt Drain down time: ( 0 ÷ 60min ) Drain down time. Runs concurrently with Fdt (Fan delay time )
dPo First defrost after power-on: (0 = Immediately; 1 = after the IdF interval time)