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General| Brand | WURM |
|---|---|
| Model | CRD-XP |
| Category | Controller |
| Language | English |
Overview of the CRD-XP display, how to select parameters, and navigate between standard and advanced levels.
Instructions on how to access and exit the advanced parameter level for detailed controller configuration.
Details of standard level parameters (P00-P09) for actual values and basic setpoints.
Parameters P10-P14 for controlling hysteresis, set values, and shift functions.
Parameters P15-P27 for configuring defrost types, times, and related settings.
Parameters P28-P32 for managing fan control modes, run-up, rundown, and delay times.
Parameters P38-P43 for compressor dwell time, operating time, and safety modes.
Parameters P44-P49 for setting alarm delays, priority, and temperature thresholds.
Parameters P50-P53 for configuring digital inputs and their voltage status.
Parameters P54-P59 for probe operation modes and calibration adjustments.
Parameters P60-P61 for controlling displayed temperature and display resolution.
Parameter P62 for setting the temperature register cycle for data logging.
Parameters P63-P73 covering address, manual defrost, relay tests, date, probe type, and software version.
Description of normal control operation using probe F1 for regulation and F2 for defrost limit.
Operation mode where control is inactive, used for defrosting slave functions.
Control mode utilizing both probes F1 and F2 for calculating the regulating actual value.
Control mode supporting heating and cooling operations based on setpoints and hysteresis.
Configuration and operation of the sharp frost function triggered by digital input 2.
Fan control mode where the ventilator operates continuously or is switched off during defrost.
Fan control mode timed with cooling commands, including run-up and rundown times.
Fan control mode based on regulating actual value falling below a temperature setpoint plus hysteresis.
Indication shown on the display during an active defrost cycle.
Procedures for initiating and stopping manual defrost cycles using parameter P09.
Methods for timed defrosting via BUS system and synchronising defrosts across multiple controllers.
Activation of cyclical defrosts and conditions that suppress defrost initiation.
Description of the hot gas defrost type with integrated solenoid valve switching.
