STULZ E2 Microprocessor Controller

Standard controls across all products

STULZ E2 is the standard microprocessor controller across all STULZ product platforms.  E2 provides precision monitoring and control of your mission critical environment. 

STULZ E2 Controller ties everything together

  • Designed specifically for precision control of mission critical environments

  • Multiple I/O capabilities for all major components to optimize control for energy savings

  • Supports universal BMS interface for remote monitoring (address readable) and remote control (address writable)

  • Capable of network controllers in a workgroup (pLAN) to work as one (no BMS required)

  • Pre-engineered controls for economizers and adiabatic cooling



  • Control Panel

  • Backlit LCD alphanumeric display for visual indication

  • Operated via 6-key menus, in five different modes

  • Unit functions for cooling, heating, humidifying and dehumidifying

  • Three levels of restricted entry into the configuration

  • Microprocessor

  • Sensor inputs control inputs/outputs

  • Additional I/O sensors and alarms

  • Psychrometric control provided as a user configurable temperature and humidity (relative humidity) or dew point control

  • Optional UPS backup module

  • Software

  • Independent EC Fan and cooling control (CW valve or DX)

  • Cooling control sequence: return air temperature, humidity, supply air temperature, dew point

  • Fan control sequence: BMS, local/static pressure, and temperature based (supply or return air)

  • Networking

  • Capable of networking up to eight E2 controllers with an independent LAN



  • Additional adiabatic cooling effect

  • Approved for hygienic operation to VDI6022

  • Energy consumption: approx. 60 W per 1 kg/h of humidifier capacity

The E2 Controller will communicate with BMS/BAS systems via the following protocols:

  • BACnet IP
  • BACnet over Ethernet
  • BACnet MS/TP
  • HTTP
  • SNMP V1, V2c
  • Modbus IP
  • Modbus RTU


  • STULZ Product Overview Brochure

    • File: STULZ_Product_Overview_Brochure.pdf

    • Type: Adobe PDF

    • Size: 2,61 MB

    • Language: English (US)

    • Date: 2019-04-29

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