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The EZ-ZONE® PM panel mount controller offers control options that reduce system complexity and thermal loop ownership cost. It can be ordered as a PID controller, an over/under limit controller or its functions can be combined into an integrated controller. An option to integrate a high amperage power controller output with a high-performance PID controller and an over/under limit controller in one space-saving, panel mount package is also available. Many communications options are offered to support connectivity needs.

Because the EZ-ZONE PM controller is highly scalable, pay only for what is needed. This controller is available in 1/32, 1/16, 1/8 and 1/4 DIN panel mount packages. The EZ-ZONE PM controller is easy to use and is ideal for PID, over/under limit or integrated controller needs.

Specifications · Features and Benefits


  • User-selectable heat/cool, on-off, P, PI, PD, PID or alarm action, not valid for limit controllers
  • Auto-tune with TRU-TUNE+ adaptive control algorithm
  • Control sampling rates: input = 10Hz, outputs = 10Hz
Profile Ramp/Soak - Real Time Clock and Battery Backup
  • 4 profiles, 40 total steps
  • Accuracy (typical): ±30 PPM at 77ºF (25ºC) +30/-100 PPM at -4 to 149ºF (-20 to 65ºC)
  • Battery type/typical life: lithium, three cumulative years unpowered at 77ºF (25ºC)
Isolated Serial Communications
  • EIA 232/485, Modbus® RTU
  • EtherNet/IP™/Modbus® TCP
  • DeviceNet™
Wiring Termination - Touch-Safe Terminals
  • Input, power and controller output terminals are touch safe, removable, 12 to 22 AWG
Universal Input
  • Thermocouple, grounded or ungrounded sensors greater than 20MΩ input impedance, 3µA open sensor detection, 2kΩ source resistance max.
  • RTD 2- or 3-wire, platinum, 100Ω and 1000Ω @ 32ºF (0ºC) calibration to DIN curve (0.00385Ω/Ω/ºC)
  • Process, 0-20mA @ 100Ω, or 0-10VDC @ 20kΩ, 0-50mV at 20MΩ, 0-1000Ω potentiometer; scalable; inverse scaling
Functional Operating Range

Type J: -346 to 2192ºF (-210 to 1200ºC)
Type K: -454 to 2500ºF (-270 to 1371ºC)
Type T: -454 to 750ºF (-270 to 400ºC)
Type E: -454 to 1832ºF (-270 to 1000ºC)
Type N: -454 to 2372ºF (-270 to 1300ºC)
Type C: 32 to 4200ºF (0 to 2315ºC)
Type D: 32 to 4200ºF (0 to 2315ºC)
Type F: 32 to 2449ºF (0 to 1343ºC)
Type R: -58 to 3214ºF (-50 to 1767ºC)
Type S: -58 to 3214ºF (-50 to 1767ºC)
Type B: 32 to 3300ºF (0 to 1816ºC)
RTD (DIN): -328 to 1472ºF (-200 to 800ºC)
Process: -1999 to 9999 units

  • Calibration accuracy and sensor conformity: ±0.1% of span, ±1ºC @ the calibrated ambient temperature and rated line voltage
    • Types R, S, B; 0.2%
    • Type T below -50ºC; 0.2%
  • Calibration ambient temperature @ 77ºF ±5ºF (25ºC ±3ºC)
  • Accuracy span: 1000ºF (540ºC) min.
  • Temperature stability: ±0.1ºF/ºF (±0.1ºC/ºC) rise in ambient max.
Thermistor Input
  • 0 to 40kΩ, 0 to 20kΩ, 0 to 10kΩ, 0 to 5kΩ
  • 2.252kΩ and 10kΩ base at 77ºF (25ºC)
  • Linearization curves built-in
Current Transformer Input
  • Accepts 0-50mA signal (user-programmable range)
  • Displayed operating range and resolution can be scaled and are user-programmable
Digital Inputs (DC Voltage)
  • Max. input: 36V at 3mA
  • Logic: min. high state 3V at 0.25mA, max. low state 2V
Digital Inputs (Dry Contact)
  • Logic: min. open resistance 10kΩ, max. closed resistance 50Ω
  • Max. short circuit: 20mA
2 Digital I/O (ordered with power supply option)
  • Update rate: 10Hz
  • Input type: user-selectable, dc voltage or dry contact
  • Output type: switched dc
  • Output voltage: 24V
  • Output 5: 24mA max. or drive one 3-pole DIN-A-MITE®
  • Output 6: 10mA max.
6 Digital I/O (ordered with communications option)
  • Update rate: 10Hz
  • Input type: user-selectable, dc voltage or dry contact
  • Output type: user-selectable, switched dc or open collector
  • Switched dc output voltage: 12 to 24VDC, depending on current draw
  • Switched dc max. supplied current: 40mA at 20VDC and 80mA at 12VDC
  • Switched dc max. low state: 2V
  • Open collector max. switched voltage: 32VDC
  • Open collector max. switched current: 1.5A per output; 8A total for all 6 outputs
Output Hardware
  • Switched dc: 22 to 32VDC @ 30mA max. per single output and 40mA max. total per paired outputs (1 & 2, 3 & 4)
  • Open collector: 30VDC max. @ 100mA max.
  • SSR, Form A, 24 to 240VAC, 1A at 50ºF (10ºC) to 0.5A at 149ºF (65ºC) resistive load, 264VAC max., opto-isolated, without contact suppression, 120/240VAC @ 20VA pilot duty
  • Electromechanical relay, Form C, 24 to 240VAC or 30VDC max., 5A resistive load, 100,000 cycles at rated load, 120/240 @ 125VA or 24VAC @ 25VA pilot duty
  • Electromechanical relay, Form C, 24 to 240VAC or 30VDC max., 5A resistive load, 100,000 cycles at rated load, 120/240 @ 125VA or 24VAC @ 25VA pilot duty
  • NO-ARC relay, Form A, 85 to 264VAC, 15A @ 122ºF (50ºC), resistive load, no VDC, 2,000,000 cycles at rated load
  • Universal process output: range selectable; 0 to 10VDC ±15mV into a min. 1,000Ω load with 2.5mV nominal resolution; 0 to 20mA ±30µA into max. 800Ω load with 5µA nominal resolution; temperature stability 100ppm/ºC
Operator Interface
  • Dual 4-digit, 7-segment LED displays
  • Advance, infinity, up and down keys, plus 1 or 2 programmable EZ-KEY(s) depending on model size
  • Typical display update rate: 1Hz
  • RESET key substituted for infinity on all models with limit controller
Line Voltage/Power
  • High voltage option: 85 to 264VAC, 47 to 63Hz
  • Low voltage option: 20 to 28VAC, +10/-15%; 50/60Hz, ±5% or 12 to 40VDC
  • Max. power consumption: 10VA; 14VA (1/8 and 1/4 DIN)
  • Data retention upon power failure via nonvolatile memory
  • Compliant with SEMI F47-0200, Figure R1-1 voltage sag requirements @ 24VAC or higher
  • Operating temperature: 0 to 149ºF (-18 to 65ºC)
  • Storage temperature: -40 to 185ºF (-40 to 85ºC)
  • Relative humidity: 0 to 90% RH, non-condensing
Agency Approvals
  • cULus® UL/EN/CSA C22.2 No 61010-1 Listed, File E185611
  • CSA C22.2 No. 24, File 158031 (1/32 and 1/16 DIN sizes)
  • UL® 50 4X indoor locations, NEMA 4X, IP66 front seal
  • cULus® ANSI/ISA 12.1201-2001, CSA-C22.2 No. 213-1987, Class 1, Div. 2, Groups A, B, C and D, temperature code T4A, File E184390 (optional)
  • FM Class 3545 (limit controls)
  • CE, RoHS by design, W.E.E.E.
  • EtherNet/IP™ and DeviceNet™ ODVA Conformance Tested.

Features and Benefits

Integrated PID and limit controller
  • Reduces wiring time and termination complexity compared with connecting discrete products
  • Decreases required panel space
  • Lowers installation costs
  • Increases user and equipment safety for over/under temperature conditions
High amperage power control output
  • Drives 15 ampere resistive loads directly
  • Reduces component count
  • Decreases cost of ownership
Current monitoring
  • Detects heater current flow and provides alarm indication of a failed output device or heater load
Serial communication capabilities
  • Provides a wide range of protocol choices including Modbus® RTU, EtherNet/IP™, Modbus® TCP, PROFIBUS DP and DeviceNet™
  • Supports network connectivity to a PC or PLC
Dual-channel controller
  • Provides two PID controllers in one space-saving package
Enhanced control options
  • Easily handles complex process problems such as cascade, ratio, differential, square-root, motorized valve control without slidewire feedback, wet-bulb/dry-bulb, compressor control and peltier loads
Advanced PID control algorithm
  • Offers TRU-TUNE®+ adaptive control to provide tighter control for demanding applications
  • Provides auto-tune for fast, efficient startup
Configuration communications with software
  • Includes Watlow standard bus communications and EZ-ZONE configurator software
  • Saves time and improves reliability of controller setup
Ten-point linearization curve
  • Improves sensor accuracy
Built-in sensor compensation curves
  • Saves cost of buying compensated sensors
  • Includes Vaisala RH and altitude (pressure) curves
Remote set point operation
  • Supports convenient set point manipulation from a remote device such as a master control or PLC
Profile capability
  • Offers pre-programmed process control
  • Allows ramp/soak programming with 40 total steps, battery backup and real time clock
Retransmit Output
  • Supports industry needs for recording
Factory Mutual (FM) approved over/under limit with auxiliary outputs
  • Increases user and equipment safety for over/under temperature conditions
Memory for saving and restoring parameter settings
  • Decreases service calls and time down
Agency approvals: UL® listed, CSA, CE, RoHS, W.E.E.E., FM, SEMI F47-0200, Class 1, Div. 2 rating on selected models
  • Assures prompt product acceptance
  • Reduces end product documentation costs
Touch-safe package
  • Increases safety for installer/operator
  • Complies with IP2X requirements
Consistent termination labeling connection system
  • Simplifies switching between products
  • Speeds up user's system documentation
  • Enables simple, one-touch operation of user-defined, repetitive activities
Programmable menu system
  • Reduces setup time and increases operator efficiency
Three-year warranty
  • Provides product support and reliability


· Dimensional Drawing of EZ-ZONE® PM 1/32 DIN

· Dimensional Drawing of EZ-ZONE® PM 1/16 DIN

· Dimensional Drawing of EZ-ZONE® PM 1/8 DIN - Horizontal

· Dimensional Drawing of EZ-ZONE® PM 1/8 DIN - Vertical

· Dimensional Drawing of EZ-ZONE® PM 1/4 DIN