WATLOW EZ-ZONE® ST


The EZ-ZONE® ST integrated solid state controller from Watlow® offers a complete thermal system control solution in a single package.

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Product Description

Product Description

Features include a PID temperature controller connected to a high-amperage solid state relay with the option of adding a properly sized heat sink, an over- and under-temperature limit, a power shut-down contactor and digital communications in one complete and professionally engineered product.

Because the solid state controller system is modular and scalable, a user only pays for what is needed. Stacking the EZ-ZONE ST integrated controller into multiple configurations enables flexibility to standardize the product platform to solve a wide range of application needs.

Specification Highlight

Specification Highlight

Control / Limit Loop: 1 / 1
Alarms: 2
Mounting: DIN-rail
Profiling: Yes
Max Output: 75A
Output Firing Zero Cross, Phase Angle
Phase Configuration: 1
Ambient Operating Range: -18 to 70°C (0 to 158°F)
Agency Approvals: UL® , CSA, CE, IP65/NEMA 4X indoor use RUI, RoHS, W.E.E.E., FM (limit feature)
Communication Protocols: Standard Bus, Modbus® RTU, EtherNet/IP™, DeviceNet™, PROFIBUS DP or Modbus®
Adaptive Tuning TRU-TUNE+: Yes
Remote Limit Reset: Yes, if digital inputs are ordered
Display Height: 2.05 in. (52.07 mm)
Dimensions: 7.0 in. H (177.8 mm) x 2.5 in. W (63.5 mm) x 6.14 in. D (156 mm)
Warranty (years): 3
Features & Benefits

Features & Benefits

Features Benefits
Back panel or DIN-rail mount
  • Provides several mounting options
    		•
    Off-the-shelf designed system solution
  • Improves system reliability and termination reduction
  • Reduces installation cost
  • Eliminates incompatibility headaches often encountered with using many different components and brands
    		•
    Touch-safe package
  • Complies with IP2X increasing user safety
    		•
    ±0.1 percent temperature accuracy
  • Provides efficient and accurate temperature control
    		•
    Agency approvals: UL®, CSA, CE, RoHS, W.E.E.E.
  • Meets applications requiring agency approvals
    		•
    PID temperature control
  • Allows single input/ dual output
  • Allows standard PID or adaptive Tru-Tune+ tuning algorithms for demanding controllability requirements
    		•
    Ability to communicate with programmable logic controller (PLC), personal computer (PC) or operator interface terminal (OIT)
  • Optional EIA 485 Modbus® RTU
  • RUI/communications gateway with optional EIA 232/485 Modbus® RTU, EtherNet/IP™, Modbus® TCP, DeviceNet™ or PROFIBUS DP
    		•
    Solid state relay output
  • Allows faster cycling, more precise control, increased heater life and improves energy efficiency
  • Ability to handle up to 75 amperes
  • Uses either zero-cross or phase angle control modes for flexibility to control resistive loads such as nichrome, tungsten or quartz lamps
    		•
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