Watlow EZ-ZONE RM Specifications

EZ-ZONE® RM Multi-Loop Controller

EZ-ZONE® RM High-Density
Modules Integrate
Temperature, Process,
Limit and Power Control
from 1 to 152 Loops Into
One System

SPECIFICATION SHEET

The EZ-ZONE® RM controller family simplifies thermal
system management. The EZ-ZONE RM controller family
is comprised of six module types: an integrated on-off
or PID control, monitoring and over/under temperature
limit module, a high-density on-off or PID control module,
a high-density limit only module, an input/output (I/O)
expansion module, a high-density monitor/scanner
module and a data logging and field communications
access module. A system is configured by connecting
any combination of module types to address specific
application needs. The EZ-ZONE RM is extremely flexible
and scalable allowing mixing and matching of I/O to
configure one to 152 control loops and up to 256 monitor
points.

Optional integrated controller functions can be
combined or ordered in different quantities:

• PID control loops

• Over/under temperature limit control loops

• 10 and 15 ampere power output/heater driver options

• On-board data logging

• Current measurement input

• Sequencer start up and control function

• Programmable timer and counter functions

• Programmable math and logic options

• Multiple communication protocol options

• Mobile configuration with removable secure digital

(SD) flash card

Benefits of using an integrated controller solution:

• Reduces wiring time and termination complexity

compared to connecting multiple discrete products

• Improves system reliability

• Reduces termination and installation cost

• Eliminates compatibility issues often encountered with

using various discrete components and brands

• Reduces troubleshooting time and downtime costs

because the system can specifically identify any
problems with a sensor, controller, solid state relay (SSR)
power output or heater load

• Complete thermal solution saves engineering time and

labor costs while shortening project schedules

Features and Benefits

Multiple inputs; from one to 152 PID loops of control or
monitor up to 256 analog inputs

• Mix and match I/O to fit any application; from one input

with two outputs to 152 analog inputs with 152 outputs,
or monitor up to as many as 256 analog inputs all in
one system

• Reduces cost because only required loops are purchased

• Allows a common controller platform across many

design applications as both loops and outputs can be
ordered in single increments

Advanced PID control algorithm

• Offers TRU-TUNE®+ adaptive control to provide tighter

control for demanding applications

• Enables auto-tune for fast, efficient start-up

Communication capabilities

• Provides a range of protocol options including universal

serial bus (USB) device port, Modbus® RTU, EtherNet/IP™,
Modbus® TCP, DeviceNet™ and PROFIBUS

USB Port

• Provides data log retrieval

SPLIT-RAIL control

• Allows modules mounted in separate high-voltage and

low-voltage cabinets to function as an integrated system

• Minimizes the length and cost of wire runs and improves

system reliability by locating inputs closer to sensors and
outputs closer to loads

AUTO CLONE

• Reduces time and configuration complexity by

automatically building a new module with the same
parameter settings as the replaced module

SENSOR GUARD

• Prevents unplanned process shutdowns and product

loss by switching to a backup sensor if the primary
sensor fails

Additional Key Functions

• Configuration communication port (standard bus)

• Removable modules and connectors

• Ring lug and front-screw terminal options

• Profile ramp soak with 400 total steps

• Retransmit and remote set point input virtually inside

controller eliminating costs for input/output hardware

• User configuration settings can be stored and recalled

• Thermistor input

• Elevated operating range of 0 to 149°F (-18 to 65°C)

• UL® listed, CSA, CE, RoHS, W.E.E.E., FM, SEMI F47-0200,

Class 1, Div. 2 rating on selected models

Common Specifications (Applies to all modules)

Line Voltage/Power

• 20.4 to 30.8VAC/VDC, 50/60Hz ±5%

• Any external power supply used should comply with a

Class 2 or SELV rating (see specific module specification
listing for max. VA power consumption)

• Data retention upon power failure via non-volatile memory

• Compliant with Semi F47-0200, Figure R1-1 voltage sag

requirements

Environment

• 0 to 149°F (-18 to 65°C) operating temperature

• -40 to 185°F (-40 to 85°C) storage temperature

• 0 to 90% RH, non-condensing

Functional Operating Range for RMC, RMH, RML
and RMS

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

Agency Approvals

• UL®/EN 61010 Listed, File E185611, C-UL® C22.2

#61010ANSI/ISA 12.12.01-2007 Class 1, Div. 2-Group A, B, C,
D temperature code T4 (optional)

• UL® 1604 Class 1, Div. 2 (optional)

• EN 60529 IP20

• UL® 50, NEMA 4X, EN 60529 IP66; 1/16 DIN remote user

interface (RUI)

• CSA 610110 CE

• RoHS by design, W.E.E.E.

• FM Class 3545 on limit control versions

• CE

Serial Communications

• All modules ship with standard bus protocol for

configuration and communication with all other
EZ-ZONE products

Implicit Messaging

Number of data members accessible through implicit
messaging

Protocol

Ethernet/IP™ 100 20 40 40 20 40 20
DeviceNet™ 200 20 40 40 20 40 20

RM

System

RMC RMH RML RME RMS RMA

User Interface

• Seven-segment LED, address/protocol indicator

programmed via push button switch

• Communication activity, 2 LEDs

• Error condition of each loop, 4 LEDs

• Output status indication, 16 LEDs

Maximum System Configuration

• One access module plus up to 16 additional control or

expansion modules (any combination), up to 152 loops

Mounting

• DIN-rail specification EN50022, 1.38 x 0.30 in.

(35 x 7.5 mm)

• DIN-rail mounted or chassis mounted with customer

supplied screws

Wiring Termination—Touch-Safe Terminals

• Right angle and front screw type terminal blocks

(slots A, B, D, E)

• Input, power and controller output terminals, touch safe,

removable, 12 to 30 AWG

Programmable Application Blocks

Compare

• Greater than, less than, equal, not equal, greater than or

equal, less than or equal

Counters

• Counts up or down, loads predetermined value on the load

signal. Output is active when the count value equals or
exceeds predetermined target value

Linearization

• Interpolated or stepped relationship

Logic

• And, nand, or, nor, equal, not equal, latch, flip flop

Math

• Average, process scale, deviation scale, differential

(subtraction), ratio (divide), add, multiply, absolute
difference, min., max., square root, sample and
hold, altitude and dew point

Process Value

• Sensor backup, average, crossover, wet/dry bulb,

switch over, differential (subtraction), ratio (divide), add,
multiply, absolute difference, min., max., square root,
altitude, visala and dew point

Special Output Function

• Compressor – turns on-off compressor for one or two

loops (cool and dehumidify with single compressor)

• Motorized valve – turns on-off motor open/closed

outputs causing valve to represent desired power level

• Sequencer – turns on-off up to four outputs to

distribute a single power across all outputs with linear
and progressive load wearing

Timers

• On pulse – produces an output of fixed time on the active

edge of timer run signal

• Delay – output is a delayed start of timer run and off at

same time

• One shot – oven timer

• Retentive – measures timer run signal and output on when

accumulated time exceeds target

Variable

• User value for digital or analog variable

EZ-ZONE RM Family Comparison

Standard Connectors

Standard Connectors

Straight Connectors

5.8 in.

(147.1 mm)

4.57 in.

(116.08 mm)

4 in.

(102 mm)

Standard Connectors

Straight Connectors

Ring Terminal Connectors

5.8 in.

(147.1 mm)

4.57 in.

(116.08 mm)

4 in.

(102 mm)

6.1 in.

(154.4 mm)

Control
Module

Number of modules per system 1 to 16 1 to 16 1 to 16 1 to 16 1 to 16

Number of PID loops per module 1 to 4 4, 8, 12 or 16 0 0 0

Number of limit loops per module 1 to 4 0 4, 8 or 12 0 0

Number of monitoring points per module 1 to 3 0 0 0 4, 8, 12 or 16

Mechanical relays per module 1 to 8 4 or 8 4, 6 or 8 4, 8 or 12 4 or 8

Digital I/O points per module 6 6 or 12 6 or 7 6, 12, 18 or 24 6, 7 or 12

Actions (events) per module 8 24 16 8 16

Alarms per module 8 24 16 8 16

Compare per module 4 24 16 8 24

Counters per module 4 24 16 8 24

Linearization per module 4 24 16 8 24

Logic per module 16 24 16 16 24

High-Density

Control Module

High-Density
Limit Module

Expansion

Module

High-Density

Scanner Module

Math per module 8 24 16 8 24

Process value per module 1 to 4 4, 8, 12 or 16 4, 8 or 12 0 4, 8, 12 or 16

Special output function per module 4 0 0 4 0

Timers per module 4 24 16 8 24

Variable per module 16 24 16 16 24

Dimensional Drawings

2.03 in.

Slot D

Slot E

Slot A

Slot B

(51.56 mm)

Slot C

Add 2.03 in.
(51.56 mm) per module

Connector Type Module Depth in. (mm)

Standard (Right Angle) 5.8 (148)

Straight (Front Screw) 6.1 (155)

Ring Terminal 6.5 (166)

Standard Connectors

5.8 in.

(147.1 mm)

1.75 in.

(44.45 mm)

4.41 in.

(112.04 mm)

Front-Screw Connectors

Ring Terminal Connectors

6.1 in.

(154.4 mm)

6.5 in.

(164.9 mm)

4.57 in.

(116.08 mm)

4 in.

(102 mm)

Control Module Specifications (RMC)

(Select an RMC module for 1 to 4 loops of control.)

Line Voltage/Power

• Power consumption: 7 W, 14VA

• Any external power supply used should comply with a

Class 2 or SELV rating

Controller

• User-selectable heat/cool, on-off, P, PI, PD, PID or alarm

action, not valid for limit controllers

Process PID or Over-temperature Limit Mode Options

• Auto-tune with TRU-TUNE+ adaptive control

• Control sampling rates: input = 10Hz, output = 10Hz

(non-divisional)

Isolated Serial Communications

• All modules ship with standard bus protocol for

configuration and communication with all other EZ-ZONE
controllers

• Optional EIA 485, Modbus® RTU

Profile Ramp and Soak (RMC only, not available with
high-density controller)

• Profile engine affects one to four loops

• 25 profiles and 15 sub-routines, 400 steps total

• Option for battery backup and real time clock is via the

access module

Calibration Accuracy

• ±0.1% of span, ±1°C. See user manual for details.

Universal Input

• Thermocouple, grounded or ungrounded sensors

• >20MΩ input impedance

• Max. of 2kΩ source resistance

• RTD 2- or 3-wire, platinum, 100Ω and 1000Ω @ 32°F (0°C)

calibration to DIN curve (0.00385Ω/Ω/°C)

• Process, 0-20mA @100Ω, or 0-10VDC @ 20kΩ input

impedance; scalable, 0-50mV

• Potentiometer: 0 to 1,200Ω

• Inverse scaling

• Current: input range is 0 to 50mA, 100Ω input impedance

Response time: 1 second max., accuracy ±1mA typical

Thermistor Input

• 0 to 40kΩ, 0 to 20kΩ, 0 to 10kΩ, 0 to 5kΩ

• 2.252kΩ and 10kΩ base at 77°F (25°C)

Digital Input

• Update rate 10Hz

• Max. input 36VDC at 3mA

• Min. high state 3VDC at 0.25mA

• Max. low state 2V

Dry Contact Input

• Update rate 10Hz

• Min. open resistance 10kΩ, max. closed resistance 50Ω

Current Measurement Input

• Accepts 0-50mA signal (user programmable range)

• Displayed operating range and resolution can be scaled

and are user programmable

Output Hardware

• Switched dc:

• Max. 32VDC open circuit

• Max. current 30mA per single output

• Max. current 40mA per paired outputs (1 & 2, 3 & 4,
5 & 6, 7 & 8)

• Open collector:

• Max. 30VDC @ 100mA

• 6 digital inputs/outputs:

• Switched dc, max. 20VDC @ 40mA, 12VDC @ 80mA

• Open collector, max. 32VDC @ 1.5A, max. 8A per 6
outputs combined

• SSR, Form A, 1A at 50°F (10°C) to 0.5A at 149°F (65°C), 0.5A

@ 24VAC min., 264VAC max., opto-isolated, without contact
suppression

• Electromechanical relay, Form C, 5A, 24 to 240VAC or

30VDC max., resistive load, 100,000 cycles at rated load,
requires a min. load of 20mA at 24V, 125VA pilot duty

• Electromechanical relay, Form A, 5A, 24 to 240VAC or

30VDC max., resistive load, 100,000 cycles at rated load,
requires a min. load of 20mA at 24V, 125VA pilot duty

• NO-ARC relay, Form A, 15A @ 122°F (50°C),

85 to 264VAC, no VDC, resistive load, 2 million
cycles at rated load

• Universal process/retransmit, 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 is 100ppm/°C