Watlow EZ-ZONE
®
PMI Controller • 8 • Chapter 1 Overview
Removable cage clamp wiring connectors
• Reliable wiring, reduced service calls
• Simplified installation
Heat-Cool Operation
• Provides application flexibility with accurate temperature and process control
Optional Features and Benefits
High-amperage Power Control Output
• Drives 15 amp resistive loads directly
• Reduces component count
• Saves panel space and simplifies wiring
• Reduces the cost of ownership
Integrated PID and Limit Controller
• Reduces wiring time and termination complexity compared to connecting discrete products
• Decreases required panel space
• Lowers installation costs
• Increases user ad equipment safety for over/under temperature conditions
Current Monitoring
• Detects heater current flow and provides alarm indication of a failed output device or
heater load
Communications Capabilities
• Provides a wide range of protocol choices including Modbus
®
RTU, EtherNet/IPTM, PCCC
(Programmable Controller Communications Commands), DeviceNetTM, Modbus
®
TCP, and
Profibus DP
• Supports network connectivity to a PC or PLC
Dual Channel Controller
• For selected models provides two PID controllers in one space saving package
Enhanced Control Capabilities
• Easily handle complex process problems such as cascade, ratio, differential, square-root,
motorized valve control without slidewire feedback, wet-bulb/dry-bulb and compressor
control
Full-featured Alarms
• Improves operator recognition of system faults
• Control of auxiliary devices
Ten Point Linearization Curve
• Improves sensor accuracy
Remote Set Point Operation
• Supports efficient set point manipulation via a master control or PLC
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