Need help?Do you have a question about the Heatcraft Refrigeration Products Masterlog 4 and is the answer not in the manual?
Procedure for selecting the desired operating program for the Masterlog 4 controller.
Key information on defrost parameters, relay contacts, inputs, keypad lock, and parameter saving.
Details on connecting sensors and digital inputs to the controller.
Information on auxiliary outputs and RS485 communication wiring.
Technical specifications for the controller's relay outputs.
Guide to interpreting the controller's display symbols and their operational status.
Steps for accessing and modifying controller parameters and set points.
Procedures for saving parameters, canceling alarms, and performing manual defrost.
Diagram illustrating the navigation flow between different parameter categories.
Detailed list and settings for probe measurement, display, type, and calibration.
Parameters related to temperature set points, differentials, dead zones, and operating modes.
Parameters for managing compressor start-up delays, running times, and safety features.
Settings for configuring defrost cycle type, intervals, temperatures, durations, and smart defrost.
Configuration of alarm thresholds, differentials, delays, and fan behavior during alarms.
Settings for configuring digital inputs for external alarms, defrost authorization, and light control.
Parameters for controlling fan operation, start-up, and differentials.
Settings for serial address, relay output modes, and light control.
Configuration options for keypad lockout and remote control parameter access.
Settings for buzzer, key lockout, and activation of time ranges for light/auxiliary outputs.
Options for validating set point variation and controlling heating elements.
Parameters for recording and tracking HACCP alarm events and their timestamps.
Settings for HF alarm recording and the delay for HACCP alarms.
Configuration of time ranges for the first two defrost cycles.
Settings for defrost time ranges 3 through 8 and light/auxiliary time ranges.
Configuration of light/auxiliary off times and the system's time and date programming.
Detailed list of alarm codes, their descriptions, display icons, relay/buzzer status, and reset actions.
List of part numbers for the Masterlog 4 controller and its probes.
Procedures for testing NTC probes and configuring lighting parameters.
Details on connecting defrost/heating elements and operating two Masterlog4 units in master/slave mode.
Details on power supply, insulation ratings, and input types for probes and digital signals.
Information on probe types, measurement errors, and relay output specifications.
Specifications for wiring connections, enclosure dimensions, and mounting procedures.
Details on the display, keypad, optional features, and clock accuracy.
Details on operating environments, storage, pollution, material properties, and safety classifications.
Information on installation, device construction, maintenance, and interface specifications.
General| Application | Refrigeration |
|---|---|
| Number of Relays | 4 |
| Output Type | Relay |
| Display | LED |
| Enclosure Rating | NEMA 1 |
| Control Type | Electronic |
To Next Page