Watlow EZ-ZONE PM Operating Manual
EZ-ZONE
User's Guide
®
PM Express
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RESET
Limit Controller
TOTAL
CUSTOMER
SATISFACTION
3 Year Warranty
ISO 9001
Registered Company
Winona, Minnesota USA
1241 Bundy Boulevard., Winona, Minnesota USA 55987
Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507 http://www.watlow.com
0600-0066-0000 Rev. E Made in the U.S.A.
April 2013
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, (a lightning bolt in a triangle) precedes an electric shock hazard CAUTION or
WARNING safety statement. Further explanations follow:
Symbol Explanation
CAUTION – Warning or Hazard that needs further explanation than label on unit can provide.
Consult users manual 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 prevention.
Do not throw in trash, use proper recycling techniques 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 evaluated 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 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
Warranty
This 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. Watlow's obligations hereunder, at
Watlow's option, are limited 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.
EZ-ZONE PM Limit Express • 2 •
Technical Assistance
You can get assistance from your local Watlow representative (see back cover), send an email with your questions to: wintechsupport@watlow.com or dial +1 (507) 494-5656 between 7 a.m. and 5 p.m. Central Standard
Time (CST) and ask for an Applications Engineer. Please have the following information available when calling:
• Complete model number
• All configuration information
• User's Manual
• Factory Page
The EZ-ZONE PM Controller User’s Guide is copyrighted by Watlow Electric, Inc., © April 2013 with all rights
reserved. The EZ-ZONE PM is covered by U.S. Patent No. 6,005,577 and Patents Pending
Product Overview
The EZ-ZONE PM Express single loop Limit controller is available in 1/4, 8th, 16th or 32nd DIN panel-mount packages. Ordering options include high or low voltage units with up to two outputs.
EZ-ZONE PM Limit Express • 3 •
Installation and Wiring
1/32 DIN (PM3) Dimensions
15.9 mm
(0.63 in)
Side
Top
1/32 DIN (PM3) Recommended Panel Spacing
22.2 to 22.5 mm
(0.87 to 0.89 in)
101.6 mm
(4.00 in)
31.2 mm
(1.23 in)
30.9 mm
(1.22 in)
44.96 to 45.47 mm
(1.77 to 1.79 in)
53.3 mm
(2.10 in)
Front
21.6 mm
(0.85 in)
minimum
21.6 mm
(0.85 in)
EZ-ZONE PM Limit Express • 4 • Install & Wiring
15.8 mm
(0.62 in)
1/16 DIN (PM6) Dimensions
101.6 mm
(4.00 in)
53.3 mm
(2.10 in)
53.3 mm
(2.10 in)
Side
Front
51.2 mm
(2.02 in)
Top
1/16 DIN (PM6) Recommended Panel Spacing
44.96 to 45.47 mm
(1.77 to 1.79 in)
44.96 to 45.47 mm
(1.77 to 1.79 in)
panel thickness 1.53 to 9.52 mm
(0.060 to 0.375 in)
21.6 mm
(0.85 in)
minimum
21.5 mm
(0.85 in)
EZ-ZONE PM Limit Express • 5 • Install & Wiring
100.33 mm
(3.95 in)
92.00 to 92.80 mm
(3.62 to 3.65 in)
1/8 DIN (PM8) Vertical Dimensions
53.34 mm
(2.10 in)
15.75 mm (0.62 in)
1.52 mm (0.06 in)
54.8 mm
(2.16 in)
10.16 mm
(0.40 in)
30.73 mm (1.21 in)
101.60 mm (4.00 in)
1/8 DIN (PM8) Vertical - Recommended Panel Spacing
44.96 to 45.60 mm
(1.77 to 1.79 in)
panel thickness 1.53 to 9.52 mm
(0.060 to 0.375 in)
21.6 mm
(0.85 in)
Minimum
21.6 mm
(0.85 in)
EZ-ZONE PM Limit Express • 6 • Install & Wiring
Minimum
1/8 DIN (PM9) Horizontal Dimensions
100.33 mm
(3.95 in)
15.75 mm (0.62 in)
1.52 mm (0.06 in)
53.34 mm
(2.10 in)
53.8 mm
(2.16 in)
10.16 mm
(0.40 in)
30.73 mm (1.21 in)
101.60 mm (4.00 in)
1/8 DIN (PM9) Horizontal Recommended Panel Spacing
92.00 to 92.80 mm
(3.62 to 3.65 in)
44.96 to 45.6 mm
(1.77 to 1.79 in)
panel thickness 1.53 to 9.52 mm
(0.060 to 0.375 in)
21.6 mm
(0.85 in)
Minimum
21.6 mm
(0.85 in)
Minimum
EZ-ZONE PM Limit Express • 7 • Install & Wiring
100.33 mm
(3.95 in)
92.00 to 93.0 mm
(3.62 to 3.65 in)
Dimensions 1/4 DIN (PM4) Dimensions
100.33 mm
(3.05 in)
12.70 mm
(0.50 in)
92.00 to 93.0 mm
(3.62 to 3.65 in)
15.75 mm (0.62 in)
1.52 mm (0.06 in)
30.73 mm (1.21 in)
100.84 mm (3.97 in)
21.6 mm
(0.85 in)
Minimum
panel thickness 1.53 to 9.52 mm
(0.060 to 0.375 in)
21.6 mm
(0.85 in)
Minimum
EZ-ZONE PM Limit Express • 8 • Install & Wiring
Installation
CASE
BEZEL
RETENTION COLLAR
PANEL
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 firmly
against the panel, slide the mounting collar
over the back of the controller.
If the installation does not require a NEMA 4X seal,
slide the mounting collar up to the back of the panel
tight enough to eliminate the spacing between the
gasket and the panel.
GASKET
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.
Removing the Mounted Controller from Its Case
1. From the controller's face, pull out the tab on
each side until you hear it click.
Pull out the tab on
each side until you
hear it click.
2. Once the sides are released, grab the unit
above and below the face with two hands and
pull the unit out. If it is difficult to pull the unit
out, remove the connectors from the back of
the controller. This should make it easier to
remove.
Grab the unit above
and below the face
and pull forward.
Ó Warning:
All electrical power to the controller and con trolled circuits must be disconnected before
removing the controller from the front panel
or disconnecting other wiring.
Returning the Controller to its Case
1. Ensure that the orientation of the controller is
Slide the mounting collar over the back of the
controller.
3. For a NEMA 4X seal, place the blade of a
screwdriver in the notch of the mounting collar
assembly and push toward the panel while
applying pressure to the face of the controller.
Don't be afraid to apply enough pressure to
properly install the controller.
The seal system is compressed more by mat ing the mounting collar tighter to the front
panel (see picture). If you can move the case
assembly back and forth in the cutout, you do
not have a proper seal. The tabs on each side
of the mounting collar have teeth that latch into
Place the blade of a
screwdriver in the
notch of the mounting collar assembly.
correct and slide it back into the housing.
2. Using your thumbs push on either side of the
controller until both latches click.
Note:
The controller is keyed so if it feels that it will
not slide back in do not force it. Check the orientation again and reinsert after correcting.
Chemical Compatibility
This product is compatible with acids, weak alkalis,
alcohols, gamma radiation and ultraviolet radiation.
This product is not compatible with strong alkalis,
organic solvents, fuels, aromatic hydrocarbons, chlorinated hydrocarbons, esters and keytones.
EZ-ZONE PM Limit Express • 9 • Install & Wiring
Terminal Definitions
Slot C Terminal Function Model
9899power input: ac or dc+
power input: ac or dc-
CF
Standard Bus EIA-485 common
CD
Standard Bus EIA-485 T-/R-
CE
Standard Bus EIA-485 T+/R+
Slot A
Input 1
T1
S2 (RTD) or current +,
S1
S3 (RTD), thermocouple -, current - or
volts -, thermistor
R1
S1 (RTD), thermocouple + or volts +,
thermistor
Outputs Terminal Function Configuration
1 2
X1
W1
Y1
L1
K1
J1
common (Any switched dc output can
use.)
dc- (open collector)
dc+
normally open
common
normally closed
L2K2normally open
common
PM _L_ _ _ - AAAAB _ _
PM _L_ _ _ - AAAAB _ _
Universal Sensor
input 1: all configurations
Switched dc/open collector, output 1:
PM _L_ (C) _-_ AAAB _ _
Mechanical Relay 5 A, Form C, output 1:
PM _L_ (E) _-_ AAAB _ _
Mechanical Relay 5 A, Form A, output 2:
PM _L_ _ (J)-_ AAAB _ _
EZ-ZONE PM Limit Express • 10 • Install & Wiring
Note:
In the graphics below notice that the Slot A connector does not show labeling for the outputs. Labeling for Slot
A outputs is based on the controller part number.
PM6
Output 1
Output 2
T1
98
99
CF
CD
CE
98 99
PM3
CF CD CE
C
A
T1 S1 R1Output 1 Output 2
S1
R1
A
B
C
PM8
Output 1
Output 2
T1
S1
R1
A
Output 3
Output 4
Input 2
B
E
Digital I/O 7 - 12
D
D
98
99
CF
CD
CE
C
Output 1
Output 2
T1
S1
R1
Output 1
Output 2
T1
S1
R1
A
Output 3
Output 4
Input 2
B
A
B
Digital I/O 7 - 12
D
PM9
D
PM4
Communications Card
E
C
E
C
98
99
CF
CD
CE
98
99
CF
CD
CE
EZ-ZONE PM Limit Express • 11 • Install & Wiring
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