
The EZ-ZONE
®
ST integrated solid state controller from
Watlow
®
offers complete thermal system control in a single
package solution. 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 shut-down power contactor, digital
communications and a remote user interface in one complete
and professionally engineered product.
Because the system is modular and scalable, you only pay
for what you need. You can stack the EZ-ZONE ST integrated
controller into multiple configurations giving you the flexibility
to standardize on the product’s platform to solve a wide range
of application needs.
EZ-ZONE
®
ST Integrated
Control Loop Makes Solving
the Thermal Requirements of
Your System Easy
Features and Benefits
Back panel or DIN-rail mount
• Provides several mounting options
Compact package
• Reduces panel size
Touch-safe package
• Complies to IP2X which increases safety for user
±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
EZ-ZONE P3T armor sealing system Remote User
Interface (RUI)
• Complies to NEMA 4X, IP65 RUI
• Offers water and dust resistance, can be cleaned and
washed down
Three-year warranty
• Demonstrates Watlow’s reliability and product support
Off-the-shelf designed system solution
• Improves system reliability and termination reduction
• Reduces installation cost
• Eliminates compatibility headaches often encountered with
using many different components and brands
Profile capability
• Includes ramp and soak with four files and 40 total steps
Communications with PLC, PC or OIT
• EZ-ZONE ST with optional EIA 485 Modbus
®
RTU
• EZKB (RUI/Communications Gateway) with optional
EIA 232/485 Modbus
®
RTU, EtherNet IP™/TCP Modbus
®
,
DeviceNet™ or PROFIBUS DP
© 2007, 2008, 2010 Watlow Electric Manufacturing Company all rights reserved.
Features and Benefits (con’t)
Solid state relay output
• Allows faster cycling, more precise control, increased
heater life and energy efficiency
• Up to 75 amperes
• Uses either zero-cross or phase angle control modes for
flexibility to control resistive or inductive loads
• Soft start feature with phase angle control mode to
prevent load failure or blowing fuses
PID temperature control
• Allows single input/dual output
• Allows standard PID or adaptive TRU-TUNE+ tuning
algorithms for demanding controllability requirements
Optional temperature limit
• Increases safety in
over- and under-temperature
condition
Optional definite purpose mechanical contactor
• Enables circuit safety shut down driven by limit control or
PID alarm output signal
Optional current monitoring feature
• Detects heater current flow and alarm indication of failed
Solid State Relay (SSR) or heater zone
Optional Remote User Interface EZKB (RUI)
• Uses one RUI for multiple zone solutions to save costs
• Fits in small places due to shallow panel depth
• Eliminates costs and complexity of having to bring all
controller related wires to front panel area
• Enables use of multiple remote user interfaces to improve
usability of system
Optional SSR heat sink
• Sized and engineered for specific applications
• Factory supplied heat sink is UL
®
listed
System diagnostics
• Provides continuous self-monitoring alerts when there
is any system trouble to reduce maintenance and
service costs
PC Software—EZ-ZONE Configurator
• Wizard style configuration of controller settings
• On-line or off-line recipe editing
Multiple U.S. and international patents pending.
EZ-ZONE
®
ST
WIN-EZST-0210
EZ-ZONE
®
ST
75 ampere configuration
EZ-ZONE
®
ST
40 ampere full configuration
with mechanical contactor
EZ-ZONE
®
ST
configuration with only
the controller and SSR
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