| Parameter Code | Description | Factory Default | Advanced Recommendation | | :--- | :--- | :--- | :--- | | P01 | Logging Interval (seconds) | 60 | For vaccine storage: 15 (max data fidelity) | | P05 | Delta-T (Temp change before forced log) | 0.5°C | Set to 0.2°C for ultra-stable freezers | | P09 | Sensor Offset Calibration (Probe A) | 0.0 | Use only with certified reference thermometer | | P12 | Alarm Delay (minutes before trigger) | 5 | Set to 2 for critical blood plasma storage | | P19 | USB Export Format | .CSV | Select .PDF + .CSV (dual format for compliance) |
The Advanced Manual dedicates a significant section to wiring diagrams, which is critical for the "New" hardware revisions.
For facilities using a Building Management System (BMS), the new manual dedicates an entire chapter to Modbus RTU communication. Key settings:
To access advanced settings:
The Elstat EMS 55 Advanced is an intelligent energy management controller designed for commercial refrigeration. It uses self-learning technology to predict store opening times and adjust cooling modes to save energy during closing hours. 1. Key Operating Modes
The controller automatically cycles between three primary states based on a learned 7-day schedule:
Active Mode (USE): The cooler is ready for customer use. Lights are on, and the product is maintained at the optimal serving temperature (e.g., 36°F–38°F).
Standby Mode (---): Occurs during closing hours. Lights are off, the evaporator fan cycles, and the temperature is allowed to rise to a more economical set point (approx. 50°F) to save power.
Defrost Mode (dEF): The compressor stops while the evaporator fan runs to clear ice buildup. This is a pre-programmed maintenance function. 2. Accessing the Configuration Menu elstat ems 55 advanced user manual new
To change settings or perform resets, you must enter the "key dance" password sequence: Press and hold SET until PAS appears on the display. Enter Password Sequence: Press SET (Snowflake) 3 times. Press UP arrow 2 times. Press DOWN arrow 1 time. Press DEFROST (Water drops) 4 times.
The display should now show PS, confirming you are in the parameter menu. 3. Common Settings & Resets
Half Reset (Hr): Clears the self-learning matrix so the controller can re-learn a new business schedule. Navigate to Hr in the menu and enter the password sequence again to reboot.
Perishable Mode: If enabled (setting 1), the unit will not enter standby mode, maintaining a constant low temperature to protect high-risk food items.
Test Routine (tst): Used by technicians to verify that the compressor, lights, and fans are functioning correctly. 4. Troubleshooting Display Codes 888 Initial Power-up Normal startup sequence. USE Ready Mode System is operating normally for customers. --- Standby Mode System is in energy-saving mode. PF1 / PF2 Probe Failure
Check connections for appliance (1) or condenser (2) sensors. dEF Defrosting Normal cycle; wait for it to complete.
For detailed wiring diagrams and technical specifications, refer to the EMS-55 Advanced Controller Manual or the Elstat Training Booklet. ems-55-controller.pdf
The Elstat EMS 55 Advanced is an energy management controller that uses a self-learning algorithm to optimize refrigeration cooling based on customer traffic patterns. It automatically switches between Active (Ready) and Standby modes to reduce energy consumption during periods of low activity. 1. Operational Modes & Display Codes | Parameter Code | Description | Factory Default
The controller identifies and adapts to usage cycles via motion sensors and door switches.
"888" (Startup): Displayed immediately upon power-up during a parameter check.
"USE" (Active Mode): The chiller is in normal operation, maintaining set product temperatures (typically 36°F to 38°F) with lights on.
"---" (Standby Mode): Displayed when no activity is detected. The unit raises the temperature (around 50°F) and turns off lights to save power.
Perishable Mode: If enabled, the unit bypasses Standby mode to maintain consistent cooling for sensitive products. 2. Advanced Menu Access (The "Key Dance")
To modify parameters or perform resets, you must enter a specific password sequence known as the "key dance".
Press and hold the Set (Snowflake) button until "PAS" appears. Follow this specific button sequence: Set (Snowflake): Press 3 times. Up Arrow: Press 2 times. Down Arrow: Press 1 time. Defrost (Water Drops): Press 4 times.
The display should now show "PS", indicating successful entry into the configuration menu. 3. Reset Procedures Sensor Inputs:
Resetting the device is often necessary to clear an old learning matrix if the cooler is moved to a new location.
Half Reset (Hr): Clears only the self-learning memory (opening/closing schedule).
Access the menu as described above, scroll to "Hr", and press Set to confirm.
Complete Reset: Erases all settings and returns them to factory defaults.
Unplug the unit, hold down Reset and Defrost, and reconnect the power while holding both until "USE" appears. 4. Technical Specifications
For hardware maintenance or replacement, note these key technical ratings: Voltage: 12 Volt AC.
Temperature Range: Appliance sensor operates from -15°C to +23.5°C (+5°F to +74°F).
IP Rating: Front panel is IP45 (dust and water jet protected); Rear is IP24.
Relays: Supports compressor relays (up to 30 Amp), evaporator fan relays (4 Amp), and light relays (500W). Go to product viewer dialog for this item.
Elstat Ems-55 Temperature Controller Refrigerator Thermostat