Watlow PM Specifications

Ideally Suited for
Basic Applications or
Usage Levels

SPECIFICATION SHEET

PM LEGACY™ Panel Mount Controller

1

/32 DIN

Available Soon

The Watlow® PM LEGACY™ series panel mount controller is
an industry leading PID controller that allows optimal
performance utilizing simple control and menu functionality
without complex features. It is ideally suited for basic
applications and usage levels.

The LEGACY includes one universal input and an option for
up to two outputs and is available in 1/32, and 1/16 DIN panel
mount packages. It can be ordered as a PID process controller
or as a dedicated over and under-temperature limit controller.

Features and Benefits

Simplified menu

• Fits basic applications with a user-friendly interface

supported by two menus and a streamlined list of
parameters

• Eliminates user complexity often experienced with more

advanced controllers and unnecessary features

• Reduces user training costs and user programming errors

PID auto-tune

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

Standard bus communications

• Allows easy product configuration via PC communications

protocol and free software

• Saves time, simplifies programming process and improves

reliability of controller setup

Factory Mutual (FM) approved over and under limit with
auxiliary outputs

• Increases user and equipment safety for over and

under-temperature conditions

Function key

• Enables simple, one-touch operation of user-defined,

repetitive activities

Touch-safe package

• Increases installer and operator safety

• Complies with IP2X requirements

Features and Benefits (con’t)

EZ-LINK™ mobile application for iPhone® and Android™

• Expedites controller setup with intuitive navigation

• Simplifies setting parameters with plain text names and

descriptions

• Connects quickly and easily via Bluetooth® wireless

communications

SMOOTH TOUCH™ keypad

• Eliminates contamination points on the front of the

controller

• Prevents premature failure of mechanical components

• Creates a better seal on front panel

• Ensures an easy to clean surface

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

P3T armor sealing system

• Compiles to NEMA 4X, IP66 and IP67 specifications

• Allows controller to be cleaned and washed

• Certified UL® 50 independent to NEMA 4X specification

Consistent Termination Labeling (CTL) connection system

• Simplifies switching between products

• Speeds up user’s system documentation

Three-year warranty

• Demonstrates Watlow’s reliability and product support

High-amperage power control output (1/16 DIN only)

• Drives 15 ampere resistive loads direct

• Reduces component count

• Saves panel space and simplifies wiring

• Reduces cost of ownership

Specifications

Line Voltage/Power

• 85 to 264VAC, 47 to 63Hz

• 20 to 28VAC, +10/-15%; 50/60Hz, ±5%

• 12 to 40VDC

• 10VA (1/32 and 1/16 DIN)

• Data retention upon power failure via non-volatile memory

• Compliant with SEMI F47-0200, Figure R1-1 voltage sag
requirements @ 24VAC or higher

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

Accuracy

• Calibration accuracy and sensor conformity: ±0.1%

of span, ±1°C @ the calibrated ambient temperature and

rated
line voltage

• Type S: 0.2%

• Type T below -50°C: 0.2%

• Calibration ambient temperature @ 77°F ±5°F (25°C ±3°C)

• Accuracy span: 1000°F (540°C) min.

• Temperature stability: ±0.1°F/°F (±0.1°C/°C) rise in ambient
max.

Agency Approvals

• cULus® UL/EN/CSA C22.2 No 61010-1 Listed, File E185611

•

CSA C22.2 No. 24, File 158031

• UL® 50 4X indoor locations, NEMA 4X, IP66, IP67 front seal

• cULus® ANSI/ISA 12.12.01-2007, CSA-C22.2 No. 213-1987,

Class 1, Div. 2, Groups A, B, C and D, temperature code T4A,
File E184390 (optional)

• CE, RoHS by design, W.E.E.E.

• FM Class 3545 (limit controls)

Controller

• User selectable heat/cool, on-off, P, PI, PD, PID or alarm
action, not valid for limit controllers

• Auto-tune with control algorithm

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

• Input and output capacity per controller type ordering
information

Serial Communications

• Isolated communications

• Standard bus configuration protocol

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, 2kΩ source resistance max.

• Non-isolated to switched dc and process output

• RTD 2- or 3-wire, platinum, 100Ω @ 0°C calibration to DIN
curve (0.00385 Ω/Ω/°C)

• Process, 4-20mA @ 100Ω, or 0-10VDC @ 20kΩ input
impedance; scalable

Functional Operating Range

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

Output Hardware

• Switched dc = 22 to 32VDC @ 30mA

• Open collector = 30VDC max. @ 100mA max. current sink

• Solid state relay (SSR), Form A, 0.5A @ 24VAC min., 264VAC
max., opto-isolated, without contact suppression

• Electromechanical relay, Form C, 24 to 240VAC or 30VDC
max., 5A resistive load, 100,000 cycles at rated load

• Electromechanical relay, Form A, 24 to 240VAC or 30VDC
max., 5A resistive load, 100,000 cycles at rated load

• Output 2 is limit for limit models

• NO-ARC relay, Form A, 24 to 240VAC, 15A @ 122°F (50°C),
resistive load, no VDC, 2 million cycles at rated load

• Universal process output: range selectable; 0 to 10VDC
±15mV into a min. 1,000Ω load with 2.5mV nominal
resolution; 4 to 20mA ±30µA into max. 800Ω load with 5µA
nominal resolution; temperature stability 100ppm/°C

Operator Interface

• Dual 4 digit, 7 segment LED displays

• Typical display update rate 1Hz

• Advance, infinity (RESET), up and down keys plus a
FUNCTION KEY (not available in 1/32 DIN)

• Infinity key is also labeled RESET on limit control models

• FUNCTION KEY on 1/16 DIN package automatically
programmed as an auto/manual transfer mode function
on PID models.