Watlow ez-zone pm User manual

0600-0058-0000 Rev. P Made in the U.S.A.
August 2016
User’s Guide
EZ-ZONE®PM
PID Controller Models
1241 Bundy Boulevard., Winona, Minnesota USA 55987
Phone: [phone], Fax: [phone]
http://www.watlow.com
TOTAL
3 Year W arranty
CUSTOMER
SATISFACTION
Registered Company
Winona, Minnesota USA
ISO 9001

Safety Information
We use note, caution and warning symbols throughout this book to draw your attention to
important operational and safety information.
• A “NOTE” marks a short message to alert you to an important detail.
• A “CAUTION” safety alert appears with information that is important for protecting your
equipment and performance. Be especially careful to read and follow all cautions that
apply to your application.
• A “WARNING” safety alert appears with information that is important for protecting you,
others and equipment from damage. Pay very close attention to all warnings that apply
to your application.
• The electrical hazard symbol, Ó(a lightning bolt in a triangle) precedes an electric
shock hazard CAUTION or WARNING safety statement.
Symbol Explanation
CAUTION – Warning or Hazard that needs further explanation than label on
unit can provide. Consult User's Guide for further information.
ESD Sensitive product, use proper grounding and handling techniques
when installing or servicing product.
Unit protected by double/reinforced insulation for shock hazard preven-
tion.
Do not throw in trash, use proper recycling techniques or consult manu-
facturer for proper disposal.
Enclosure made of Polycarbonate material. Use proper recycling tech-
niques or consult manufacturer for proper disposal.
Unit can be powered with either alternating current (ac) voltage or direct
current (dc) voltage.
Unit is a Listed device per Underwriters Laboratories®. It has been evalu-
ated to United States and Canadian requirements for Process Control
Equipment. UL 61010 and CSA C22.2 No. 61010. File E185611 QUYX,
QUYX7. See: www.ul.com
Unit is a Listed device per Underwriters Laboratories®. It has been evalu-
ated to United States and Canadian requirements for Hazardous Locations
Class 1 Division II Groups A, B, C and D. ANSI/ISA 12.12.01-2007. File
E184390 QUZW, QUZW7. See: www.ul.com
Unit is compliant with European Union directives. See Declaration of
Conformity for further details on Directives and Standards used for
Compliance.

Unit has been reviewed and approved by Factory Mutual as a Temperature
Limit Device per FM Class 3545 standard. See: www.fmglobal.com
Unit has been reviewed and approved by CSA International for use as
Temperature Indicating-Regulating Equipment per CSA C22.2 No. 24. See:
www.csa-international.org
Unit has been reviewed and approved by ODVA for compliance with
DeviceNet communications protocol. See: www.odva.org
Unit has been reviewed and approved by ODVA for compliance with
Ethernet/IP communications protocol. See: www.odva.org
Warranty
The EZ-ZONE®PM is manufactured by ISO 9001-registered processes and is backed by a
three-year warranty to the first purchaser for use, providing that the units have not been
misapplied. Since Watlow has no control over their use, and sometimes misuse, we can-
not guarantee against failure. Watlow’s obligations hereunder, at Watlow’s option, are lim-
ited to replacement, repair or refund of purchase price, and parts which upon examination
prove to be defective within the warranty period specified. This warranty does not apply to
damage resulting from transportation, alteration, misuse or abuse. The purchaser must use
Watlow parts to maintain all listed ratings.
Technical Assistance
If you encounter a problem with your Watlow controller, review your configuration infor-
mation to verify that your selections are consistent with your application: inputs, outputs,
alarms, limits, etc. If the problem persists, you can get technical assistance from your local
Watlow representative (see back cover), by e-mailing your questions to wintechsupport@wat-
low.com or by dialing [phone] between 7 a.m. and 5 p.m., Central Standard Time
(CST). Ask for for an Applications Engineer. Please have the following information available
when calling:
• Complete model number
• All configuration information
• User's Guide
• Factory Page
Return Material Authorization (RMA)
1. Call Watlow Customer Service, [phone], for a Return Material Authorization (RMA)
number before returning any item for repair. If you do not know why the product failed,
contact an Application Engineer or Product Manager. All RMA’s require:
• Ship-to address
• Bill-to address
• Contact name
• Phone number
• Method of return shipment

• Your P.O. number
• Detailed description of the problem
• Any special instructions
• Name and phone number of person returning the product.
2. Prior approval and an Return Merchandise Authorization number from the Customer
Service Department is required when returning any product for credit, repair or evalu-
ation. Make sure the Return Merchandise Authorization number is on the outside of the
carton and on all paperwork returned. Ship on a Freight Prepaid basis.
3. After we receive your return, we will examine it and try to verify the reason for return-
ing it.
4. In cases of manufacturing defect, we will enter a repair order, replacement order or
issue credit for material returned. In cases of customer misuse, we will provide repair
costs and request a purchase order to proceed with the repair work.
5. To return products that are not defective, goods must be in new condition, in the origi-
nal boxes and they must be returned within 120 days of receipt. A 20 percent restocking
charge is applied for all returned stock controls and accessories.
6. If the unit cannot be repaired, you will receive a letter of explanation and be given the
option to have the unit returned to you at your expense or to have us scrap the unit.
7. Watlow reserves the right to charge for no trouble found (NTF) returns.
This EZ-ZONE®PM User’s Guide is copyrighted by Watlow Electric, Inc., © August 2016 with
all rights reserved.
EZ-ZONE PM is covered by U.S. Patent Numbers: 6005577; D553095; D553096; D553097;
D560175; D55766; and OTHER PATENTS PENDING

Watlow EZ-ZONE®PM PID Controller •1 • Table of Contents
TC
Table of Contents ..................................1
Chapter 1: Overview ................................5
Available EZ-ZONE PM Literature and Resources .................5
Introduction ..............................................6
Getting Started Quickly .....................................7
A Conceptual View of the PM ................................8
Inputs .................................................8
Internal Functions........................................9
Outputs................................................9
Input Events and Output Events .............................9
What is a Profile.........................................9
Chapter 2: Install and Wire...........................11
Dimensions .............................................11
1/32 DIN..............................................11
1/16 DIN..............................................12
1/8 DIN (PM8) Vertical...................................13
1/8 DIN (PM8) Vertical Recommended Panel Spacing...........13
1/8 DIN (PM9) Horizontal.................................14
1/8 DIN (PM9) Horizontal Recommended Panel Spacing ........14
1/4 DIN (PM4) .........................................15
1/4 DIN (PM4) Recommended Panel Spacing .................15
Installation ..............................................16
Wiring .................................................18
EZ-ZONE PM Isolation Blocks ...............................20
Chapter 3: Keys and Displays .........................34
Responding to a Displayed Message ..........................35
Chapter 4: Home Page..............................36
Default Home Page Parameters ..............................36
Navigating the EZ-ZONE®PM PID Controller ..................37
Changing the Set Point...................................37
Starting a Profile from the Home Page.......................38
Modifying the Display Pairs ...............................40
Conventions Used in the Menu Pages .......................41
Display ...............................................42
Range ................................................42
Modbus RTU Protocols ..................................42
Table of Contents

Watlow EZ-ZONE®PM PID Controller •2 • Table of Contents
TC Table of Contents (cont.)
Chapter 5: Operations Page ..........................44
Analog Input Menu......................................46
Linearization Menu ......................................47
Process Value Menu.....................................48
Digital Input/Output Menu ................................48
Monitor Menu..........................................49
Control Loop Menu......................................50
Alarm Menu ...........................................53
Timer Menu ...........................................55
Profile Status Menu .....................................57
Chapter 6: Setup Page ..............................60
Analog Input Menu......................................63
Linearization Menu ......................................66
Process Value Menu.....................................69
Digital Input/Output Menu ................................70
Control Loop Menu......................................74
Output Menu...........................................81
Alarm Menu ...........................................84
Timer Menu ...........................................89
Function Key...........................................91
Global Menu ...........................................93
Communications Menu...................................96
Real Time Clock Menu ...................................98
Chapter 7: Profiling Page ............................99
Profile Setup ............................................99
Profiling Menu ........................................104
Chapter 8: Factory Page............................110
Custom .............................................111
Lock Menu ...........................................112
Unlock Menu .........................................114
Diagnostics Menu......................................115
Calibration Menu ......................................116
Chapter 9: Features...............................119
Changing PM Integrated Model Number to PM Express ..........121
Saving and Restoring Settings..............................122
Programming the Home Page ..............................123

Watlow EZ-ZONE®PM PID Controller •3 • Table of Contents
TC Table of Contents (cont.)
Tuning the PID Parameters ................................123
Autotune.............................................123
Manual Tuning ........................................124
Autotuning with TRU-TUNE+®..................................125
Inputs.................................................126
Calibration Offset ......................................126
Calibration ...........................................126
Filter Time Constant ....................................128
Sensor Selection.......................................128
Set Point Minimum and Maximum.........................128
Scale High and Scale Low ...............................128
Range High and Range Low ..............................129
Ten Point Linearization ..................................129
Outputs ...............................................129
Duplex ..............................................129
NO-ARC Relay ........................................130
Retransmitting a Process Value or Set Point .................130
Cool Output Curve .....................................131
Control Methods ........................................131
Output Configuration ...................................131
Auto (closed loop) and Manual (open loop) Control ...........132
On-Off Control ........................................133
Proportional and (P) Control .............................133
Proportional and Integral (PI) Control ......................134
Proportional, Integral and Derivative (PID) Control ............134
Dead Band ...........................................134
Variable Time Base .....................................135
Single Set Point Ramping................................136
Timer Function..........................................137
Setting Up the Timer Function ............................138
Alarms ................................................140
Process and Deviation Alarms ............................140
Set Points............................................140
Hysteresis............................................140
Latching .............................................141
Silencing.............................................141
Blocking .............................................141

Watlow EZ-ZONE®PM PID Controller •4 • Table of Contents
TC Table of Contents (cont.)
Open Loop Detection ...................................141
Using Lockout and Password Security .......................142
Using Lockout Method 2 (Password Enable) .................144
Modbus - Using Programmable Memory Blocks................146
Software Configuration ...................................147
Using EZ-ZONE Configurator Software......................147
Chapter 10: Appendix .............................151
Troubleshooting Alarms, Errors and Control Issues .............151
Modbus - Programmable Memory Blocks .....................157
PM Specifications .......................................160
Ordering Information for PID Controller Models ................166
How to Reach Us........................................168

Watlow EZ-ZONE®PM PID Controller •5 •Chapter 1 Overview
Chapter 1: Overview
1
Available EZ-ZONE PM Literature and Resources
Document Title and Part Number Description
EZ-ZONE PM Integrated PID
Controller User's Guide, part
number: 0600-0059-0000
Describes how to connect and use an advanced PID loop
controller. This particular model can be ordered with
two loops of PID control and integrated limit controller
with up to 4 outputs. Like all PM controllers, it comes
with Standard Bus communications while also offering
as an option many of the most popular industrial proto-
cols available today.
EZ-ZONE PM Limit (PML) User's
Guide, part number: 0600-
0057-0000
This document describes how to protect against un-
wanted thermal runaway and over temperature condi-
tions through proper configuration, programming. Like
all PM controllers, it comes with Standard Bus communi-
cations. As an additional option, it can also be ordered
with various fieldbus communications protocols.
EZ-ZONE Remote User Interface
(RUI) User's Guide, part num-
ber: 0600-0060-0000
The RUI provides a visual remote LED display for the
PM/RM configuration and setup menus. This document
illustrates and describes connections and also describes
the Home Page for each EZ-ZONE device as viewed from
the RUI.
EZ-ZONE PM Specification
Sheet, part number: wine-
zpm0516
Describes the PM family hardware options, features,
benefits and technical specifications.
Watlow Support Tools DVD,
part number: 0601-0001-0000
Contains all related user documents, tutorial videos, ap-
plication notes, utility tools, etc...
The DVD described above ships with the product and as stated contains all of the literature
above as well as much more. If the DVD is not available one can be acquired by contacting
Watlow Customer Service at 1-507-454-5300.
As an alternative to the DVD, all of the user documentation described above can also be
found on the Watlow website. Click on the following link to nd your document of choice:
http://www.watlow.com/literature/index.cfm. Once there, simply type in the desired part
number (or name) into the search box and download free copies. Printed versions of all user
documents can also be purchased here as well.
Your Comments are Appreciated
In an effort to continually improve our technical literature and ensure that we are providing
information that is useful to you, we would very much appreciate your comments and sug-
gestions. Please send any comments you may have to the following e-mail address:
[e-mail]

Watlow EZ-ZONE®PM PID Controller •6 •Chapter 1 Overview
Introduction
The EZ-ZONE®PM takes the pain out of solving your thermal loop requirements. Watlow’s
EZ-ZONE PM controllers offer options to reduce system complexity and the cost of control
loop ownership. You can order the EZ-ZONE PM as a PID controller or an over-under limit
controller, or you can combine both functions in the PM Integrated Controller. You now have
the option to integrate a high-amperage power controller output, an over-under limit con-
troller and a high-performance PID controller all in space saving, panel-mount packages. You
can also select from a number of industrial serial communications options to help you man-
age system performance.
Standard Features and Benefits
Advanced PID Control Algorithm
• TRU-T UNE+
®
Adaptive tune provides tighter control for demanding applications.
• Auto Tune for fast, efficient start ups
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
EZ-ZONE configuration communications and software
• Saves time and improves the reliability of controller set up
Parameter Save & Restore Memory
• Reduces service calls and down time
Agency approvals: UL Listed, CSA, CE, RoHS, W.E.E.E. FM
• Assures prompt product acceptance
• Reduces end product documentation costs
• Semi F47-0200
P3T Armor Sealing System
• NEMA 4X and IP65 offers water and dust resistance, can be cleaned and washed down (in-
door use only)
• Backed up by UL 50 independent certification to NEMA 4X specification
Three-year warranty
• Demonstrates Watlow’s reliability and product support
Touch-safe Package
• IP2X increased safety for installers and operators
Removable cage clamp wiring connectors
• Reliable wiring, reduced service calls
• Simplified installation
EZ-Key/s
• Programmable EZ-Key enables simple one-touch operation of repetitive user activities

Watlow EZ-ZONE®PM PID Controller •7 •Chapter 1 Overview
Programmable Menu System
• Reduces set up time and increases operator efficiency
Full-featured Alarms
• Improves operator recognition of system faults
• Control of auxiliary devices
Heat-Cool Operation
• Provides application flexibility with accurate temperature and process control
Profile Capability
• Pre-programmed process control
• Ramp and soak programming with four files and 40 total steps
Getting Started Quickly
The PM control has a page and menu structure that is listed below along with a brief descrip-
tion of its purpose.
Setup Page
Push and hold the up and down keys
(¿ ¯) for 6 seconds to enter. (See the
Setup Page for further information)
Once received, a user would want to setup
their control prior to operation. As an example,
define the input type and set the output cycle
time.
Operations Page
Press and hold the up and down keys (¿
¯) for 3 seconds to enter. (See the Op-
erations Page for further information)
After setting up the control to reflect your
equipment, the Operations Page would be used
to monitor or change runtime settings. As an
example, the user may want to see how much
time is left in a profile step or perhaps change
the high set point of the limit.
Factory Page
Press and hold the Infinity and the green
Advance Keys (ˆ‰) for 6 seconds to
enter. (See the Factory Page for further
information)
For the most part the Factory Page has no
bearing on the control when running. A user
may want to enable password protection, view
the control part number or perhaps create a
custom Home Page.
Home Page
The control is at the Home Page when
initially powered up.
Pushing the green Advance Key ‰will allow
the user to see and change such parameters as
the control mode, enable autotune and idle set
point, to name a few.
Profile Page
Press and hold the green Advance Key ‰
for 6 seconds to enter. (See the Profile
Page for further information)
If equipped with this feature a user would want
to go here to configure a profile.
The default PM loop conguration from the factory is shown below:
• Analog Input functions set to thermocouple, type J
• Heat algorithm set for PID, Cool set to off
• Output 1 set to Heat
• Control mode set to Auto
• Set point set to 75 °F

Watlow EZ-ZONE®PM PID Controller •8 •Chapter 1 Overview
If you are using the input type shown above, simply connect your input and output devices
to the control. Power up the control and push the up arrow ¿on the face of the control to
change the set point from the default value of 75°F to the desired value. As the Set Point
increases above the Process Value, output 1 will come on and it will now begin driving your
output device. The PV function as shown in the graphic below is only available with PM4/8/9
models.
Note:
The output cycle time will have a bearing on the life of mechanical relay outputs and can
be different based on the type of output ordered. The output cycle time can be changed
in the Setup Page under the Output Menu.
EZ-ZONE PM Default Configuration
Heat
Thermocouple Type J
Analog Input 1
PID
Controller
Heat
Loop 1
Input Sensor
Output
Function
Input
Function
Output 1
Process
Value
(PV)
Function
Off
A Conceptual View of the PM
The exibility of the PM’s software and hardware allows a large range of congurations. Ac-
quiring a better understanding of the controller’s overall functionality and capabilities while
at the same time planning out how the controller can be used will deliver maximum effec-
tiveness in your application.
It is useful to think of the controller in three parts: inputs; procedures; and outputs. In-
formation ows from an input to a procedure to an output when the controller is properly
congured. A single PM controller can carry out several procedures at the same time, for
instance closed-loop control, monitoring for several different alarm situations and operating
switched devices, such as lights and motors. Each process needs to be thought out carefully
and the controller’s inputs, procedures and outputs set up properly.
Inputs
The inputs provide the information that any given programmed procedure can act upon. In a
simple form, this information may come from an operator pushing a button or from a sensor
monitoring the temperature of a part being heated or cooled.
Each analog input typically uses a thermocouple or RTD to read the process temperature. It
can also read volts, current or resistance, allowing it to use various devices to read a wide
array of values.
A PM with digital input/output (DIO) hardware includes two sets of terminals where each of
which can be used as either an input or an output. Each pair of terminals must be congured
to function as either an input or output with the direction parameter in the Digital Input/
Output Menu (Setup Page). Each digital input reads whether a device is active or inactive.
The Function or EZ Key/s (PM4/6/8/9 only) on the front panel of the PM also operates as a
digital input by toggling the function assigned to it in the Digital Input Function parameter in
the Function Key Menu (Setup Page).

Watlow EZ-ZONE®PM PID Controller •9 •Chapter 1 Overview
Internal Functions
The controller will use input signals to calculate a value and then perform an operation. A
sample of some functions may be as simple as:
• Compare an input value to the set point and calculate the optimal power for a heater
• Detect a failure of the primary sensing device and trip a contactor to remove power from
the heating element
• Reading a digital input to set a state to true or false
• Evaluate an incoming temperature to determine an alarm state (on or off)
To set up a function, it’s important to dene the source, or instance, to use. For example, if
the control is equipped with DIO they can be congured to respond to an alarm. If congured
as such, the digital output must be tied to the desired alarm instance (1 to 4). Using this as
an example, the Function for the digital output would be dened as an Alarm where the In-
stance would be selected as 1, 2, 3, or 4 corresponding to the alarm instance that will drive
the output.
Keep in mind that a function is a user-programmed internal process that does not execute
any action outside of the controller. To have any effect outside of the controller, an output
must be congured to respond to a function..
Outputs
Outputs can perform various functions or actions in response to information provided by a
function such as, removal of the control voltage to a contactor; operating a heater, turning a
light on or off, unlocking a door, etc...
Assign a Function to any available output on the Setup Page within the Output Menu or Digi-
tal Input/Output Menu. Then select which instance of that function will drive the selected
output. For example, you might assign an output to respond to alarm 4 (instance 4).
You can assign more than one output to respond to a single instance of a function. For ex-
ample, alarm 2 could be used to trigger a light connected to output 1 and a siren connected
to digital output 5.
Input Events and Output Events
Input and output events are internal states that are used exclusively by proles. The source
of an event input can come from a real-world digital input or an output from another func-
tion. Likewise, event outputs may control a physical output such as an output function block
or be used as an input to another function.
What is a Profile
A prole is a set of instructions consisting of a sequence of steps. When a prole runs, the
controller automatically executes its steps in sequence. The step type determines what ac-
tion the controller performs. Steps can change temperatures and other process values gradu-
ally over time, maintain the temperatures and process values for specic periods, or repeat
a sequence of steps numerous times. At each step the prole can activate or deactivate
outputs that control other equipment. Also a step can have the controller wait for specic
conditions before proceeding such as, waiting for a switch closure and/or a specic process
value to be detected by a sensor.

Watlow EZ-ZONE®PM PID Controller •10 •Chapter 1 Overview
EZ-ZONE®PM PID Model System Diagram
Universal Sensor Input, Configuration Communications,
Red/Green 7-Segment Display
Output Status
5
1
3
2
4
Indicates Zone
Address
Indicates I/O
Status
Zone
Address
6
Supervisory
&
Power
Board
Slot C
Output 2 none, switched dc, NO-ARC
power control (15 A), form A mechanical
(5 A) or Solid-State Relay (0.5 A)
Output 1 none, switched dc/open collect-
or, form C mechanical (5 A) relay, form A
solid-state (0.5 A) relay, process (V, mA)
off, heat, cool,
duplex, alarm,
retransmit,
event
off, heat, cool,
alarm, event
EZ Key/s (PM4,6,8 and 9 only)
programmable event Digital Output (or Input) 5 & 6
(optional) none, switched dc
off, heat, cool,
alarm, event
Network
remote user interface,
personal computer,
programmable logic
controller, human-
machine interface
EIA 485 Communications
Standard Bus, Modbus RTU (optional)
Digital Input (or Output) 5 & 6
(optional) none, switch, volts dc
None
Profile start/stop
Profile start
Profile hold/resume
Profile disable
TRU-TUNE+®disable
Control outputs off
Manual/auto mode
Tune
Idle set point
Force alarm
Loop & alarms off
Silence alarm
Alarm reset
Lock keypad
Restore user settings
Input sensor
PID
Controller
Board
Slot A
ramp-soak
with 4 files
(optional)
Input
Functions
Output
Functions
Analog Input 1
none, Thermocouple, RTD (100Ω,
1kΩ), Thermister 5kΩ, 10kΩ, 20kΩ,
40kΩ) Process (V, mV, mA) or 1k
Potentiometer

Watlow EZ-ZONE®PM PID Controller •11 •Chapter 2 Install and Wire
Dimensions
1/32 DIN
2
101.6 mm
4.00 in
15.9 mm
0.63 in 53.3 mm
2.10 in
31.2 mm
1.23 in
30.9 mm
1.22 in
Side Front
Top
21.6 mm
(0.85 in)
Minimum
44.96 to 45.47 mm
(1.77 to 1.79 inches)
Recommended panel spacing
panel thickness 1.53 to 9.52 mm
(0.060 to 0.375)
21.6 mm
(0.85 in)
Minimum
22.2 to 22.5 mm
(0.87 t
o0.89 inches)
Chapter 2: Install and Wire

Watlow EZ-ZONE®PM PID Controller •12 •Chapter 2 Install and Wire
L1
K1
J1
L2
K2
T1
S1
R1
L3
K3
J3
L4
K4
T2
S2
R2
98
99
CF
CD
CE
B5
D6
D5
15.8 mm
(0.62 in)
101.6 mm
(4.00 in) 53.3 mm
(2.10 in)
53.3 mm
(2.10 in)
51.2 mm
(2.02 in)
Side Front
Top Back
21.6 mm
(0.85 in)
Minimum
44.96 to 45.47 mm
(1.77 to 1.79 inches)
44.96 to 45.47 mm
(1.77 to 1.79 inches)
21.6 mm
(0.85 in)
Minimum
panel thickness 1.53 to 9.52 mm
(0.060 to 0.375)
1/16 DIN

Watlow EZ-ZONE®PM PID Controller •13 •Chapter 2 Install and Wire
1/8 DIN (PM8) Vertical
(3.95 in)
100.33 mm
(2.16 in)
54.86 mm
(2.10 in)
53.34 mm
(4.00 in)
101.60 mm
(0.62 in)
15.75 mm
(0.06 in)
1.52 mm
(0.40 in)
10.16 mm
(1.21 in)
30.73 mm
1/8 DIN (PM8) Vertical Recommended Panel Spacing
Panel thickness (0.060 in) 1.53 mm
to (0.375 in) 9.52 mm
44.96 to 45.60 mm
(1.77 to 1.79 inches)
92.00 to 92.80 mm
(3.62 to 3.65 inches)
21.6 mm
(0.85 in)
Minimum
21.6 mm
(0.85 in)
Minimum

Watlow EZ-ZONE®PM PID Controller •14 •Chapter 2 Install and Wire
1/8 DIN (PM9) Horizontal
(2.16 in)
54.86 mm
(3.95 in)
100.33 mm
(2.10 in)
53.34 mm
(0.62 in)
15.75 mm
(4.00 in)
101.60 mm
(0.06 in)
1.52 mm
(0.40 in)
10.16 mm
(1.21 in)
30.73 mm
1/8 DIN (PM9) Horizontal Recommended Panel Spacing
(3.62 to 3.65 inches)
Panel thickness (0.060 in) 1.53 mm
to (0.375 in) 9.52 mm
92.00 to 92.80 mm
44.96 to 45.60 mm
(1.77 to 1.79 inches)
21.6 mm
(0.85 in)
Minimum
21.6 mm
(0.85 in)
Minimum

Watlow EZ-ZONE®PM PID Controller •15 •Chapter 2 Install and Wire
1/4 DIN (PM4)
(3.95 in)
100.33 mm
(0.62 in)
15.75 mm
(0.06 in)
1.52 mm
(3.97 in)
100.84 mm
(0.50 in)
12.70 mm
(1.21 in)
30.73 mm
(3.95 in)
100.33 mm
1/4 DIN (PM4) Recommended Panel Spacing
92.0 to 93.0 mm
(3.62 to 3.65 inches)
Panel thickness .060 (1.53) to .375 (9.52)
92.0 to 93.0 mm
(3.62 to 3.65 inches)
21.6 mm
(0.85 inches)
Minimum
21.6 mm
(0.85 inches)
Minimum

Watlow EZ-ZONE®PM PID Controller •16 •Chapter 2 Install and Wire
Installation
1. Make the panel cutout using the mounting template dimensions in this chapter. Insert the
case assembly into the panel cutout.
2. While pressing the case assembly rmly
against the panel, slide the mounting collar
over the back of the controller.
Note:
If the installation does not require a NEMA 4X
seal, simply slide together until the gasket is
compressed.
3. For a NEMA 4X (UL50, IP65) seal, alternately
place and push the blade of a screwdriver
against each of the four corners of the mount-
ing collar assembly. Apply pressure to the face
of the controller while pushing with the screwdriver. Don't be afraid to apply enough
pressure to properly install the controller. The seal system is compressed more by mating
the mounting collar tighter to the front panel (see pictures above). If you can move the
case assembly back and forth in the cutout, you do not have a proper seal.
Slide the mounting col-
lar over the back of the
controller.
Place the blade of a
screwdriver in the notch
of the mounting collar
assembly.
The tabs on each side of the mounting collar have teeth that latch into the ridges on the
sides of the controller. Each tooth is staggered at a different depth from the front so that
only one of the tabs, on each side, is locked onto the ridges at a time.
Note:
There is a graduated measurement difference between the upper and lower half of the
display to the panel. In order to meet the seal requirements mentioned above, ensure
that the distance from the front of the top half of the display to the panel is 16 mm
(0.630 in.) or less, and the distance from the front of the bottom half and the panel is
13.3 mm (0.525 in.) or less.
case
retention collar
panel
bezel
gasket