1592031000 Univ-R4 GB - r1.1 - 2012.07.23 Universal-R 10/20
7. PARAMETERS – THEIR FUNCTIONS IN DETAIL
Table 4: controller parameters in detail
Display visualisation Description
Type of Controller: tells the Universal-UDS 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 = Double evaporator operations: combined thermostat with time initiated, temperatures terminated defrost + evaporator
fans control with delay after defrost – 3 relays & 3 probes;
7 = on/off heating thermostat – 1 relay & 1 probe.
Probe Type: configures the controller to work with PTC or NTC probes.
0 = PTC,
1 = NTC.
Differential: (0.2°C to 12.0°C) sets the degrees above Set Point at which the compressor cuts in.
Note: when tC = 7 (heating applications) the tC 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.
Minimum set point limit: (-55°C to SET or -67°F to SET) sets the lower limit of set point adjustment.
Maximum set point limit: (SET to 150°C or SET to 302°F) sets the upper limit of set point adjustment.
Anti-short cycle delay: (0 to 50min) minimum interval between the compressor stop and the next possible restart.
Second compressor start delay: (0 to 255sec)
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 affected by
any Set Point adjustment.
High temperature alarm:
ALC = 0 → [0 to 50°C] or [0 to 90°F];
ALC = 1 → [ALL to 150°C] or [ALL to 302°F].
Low temperature alarm:
ALC = 0 → [0 to 50°C] or [0 to 90°F];
ALC = 1 → [-55°C to ALU] or [-67 to ALU].
Temperature alarm delay: (0 to 255min) time interval between an alarm condition occurring and the alarm signalling.
Delay of temperature alarm at start-up: (from 0 to 720min; res. 10min) time delay of any temperature alarm during pull
down following “power on”.
Outputs activation delay at start up: (0 to 255min) time delay before any output relay activates following “power on”.
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