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SERIES EHG® SL10 Controller 

The SERIES EHG® SL10 integrated, multi-function controller is a key component to a powerful system that integrates a heater, an adjustable set point temperature controller, a high/low temperature alert, a power switching device and a high temperature safety limit. Its agency recognized controller/safety limit meets UL® 1998 and CE 60730 requirements.

An optional display/communications module can be easily added in the field to provide a digital display indication, adjustment of set point, RS485 Modbus® communications and other Human Machine Interface (HMI) features. As a scalable system, only what is needed can be purchased. The EHG SL10 controllers' easy to install, compact design, inherent reliability and integrated limit functions offer unmatched value. It is designed for easy integration with Watlow heaters to simplify engineering, reduce component count for new equipment and decrease ownership cost. For original equipment manufacturers, (OEMs), CE, SEMI-S2 compliance and UL® recognition, the EHG controller reduces time and costs associated with global agency testing and validation.


Control/Limit Loops:  1/1
Mounting:  In-line/Sub-panel
Max Output:  10A
Phase Configurations:  1
Ambient Operating Range:  0 to 70°C  (32 to 128°F)
Agency Approvals:  UL® 1998/ C-UL®, CE 60730, SEMI-S2
Communication Protocols:  Modbus® RTU
Dimensions:  3.496 in W (88.80 mm) x 2.196 in H (55.78 mm) x 1.582 in D (40.18 mm)
Warranty (years):  3
Note: The specifications in the table above are best available values in each category. Not all combinations of these values are available in a single model number.

Features & Benefits:

Features Benefits
Process controller and safety limit in one package
  • Meets UL® 1998 and CE 60730 requirements
  • Eliminates the need for a thermal fuse on a heater
  • Eliminates replacement of heater when fuse fails
Optional display/communications module
  • Allows easy upgrade on to base device
  • Offers low cost field upgrade
Accurate and flexible temperature process controller
  • Replaces problematic bi-metal thermostats with accurate electronic temperature process controller
  • Allows easy change of process parameters
Integrated high/low temperature alert signal relay
  • Provides dry contact output to activate external alarm or process function
  • Signals control status with three integrated LEDs
  • Allows a signal of up to two amperes 30VAC/VDC, Form A to alert if process temperature is out of range limits
Health check diagnostics
  • Monitors maximum heater process temperature, maximum ambient temperature and thermocouple operation
  • Provides health check signal to inform operator that the process is working correctly
Universal power supply
  • Allows an input of 85 to 264VAC, 50/60Hz
  • Provides safe control of up to 2400 watts with 10 amperes switching in both controller and safety limit
Can be switched from on-off and PID algorithm
  • Increases product life (on-off control is default)
  • Offers selectable PID control algorithm for tighter temperature uniformity
Universal 1⁄8 turn mounting bracket
  • Allows mounting to most surfaces
  • Provides flexible mounting—either horizontally or vertically

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Related Literature

Specification Sheets (4)

Brochures (1)

Software and Demos (3)

User Manuals (1)

White Papers (3)

Quality Certificates (1)

Agency Approvals (1)

Catalogs (3)



EHG SL10 Integrated Multi-Function Controller
EHG SL10 Integrated Multi-Function Controller