WATLOW PM3 LEGACY Limit Controller User Guide
- June 4, 2024
- WATLOW
Table of Contents
WATLOW® PM3 LEGACY™ Limit Controller User Guide
For Configurations: PM3 [A,C,E] J – AAAG _
For assistance contact Watlow: www.watlow.com
1-800-WATLOW2 (1-800-928-5692)
[email protected]
MOUNT TO PANEL
NOTE: Mounting requires access to the back of the panel.
-
Make the panel cutout using the measurements in figure 1.
-
Remove the green terminal connectors and the mounting collar assembly.
-
Insert the controller into the panel cutout from the front.
-
Orient the collar base so the flat side faces front and the screw openings are on the sides (see figure 2), then slide the base over the back of the controller.
-
Slide the mounting bracket over the controller with the screws aligned to the collar base. Push the bracket gently but firmly until the hooks snap into the slots in the case.
-
Tighten the two #6-19 x 1.5 in. screws with a phillips screwdriver until the device is flush to the panel (3 to 4 in-lbs torque).
-
Reinstall the terminal connectors to their original locations. (Or first connect fi eld wiring as indicated in this guide and then reinstall the connectors).
CONNECT THE SENSOR INPUT
Connect your sensor as indicated in the diagram for your sensor input. Figure 4 is an example illustrating the connection shown for a Thermocouple.
Thermocouple
Process Voltage or Current
Voltage: 0 to 50 mV or 0 to 10V@ 20kΩ
Current: 0 to 20 mA @ 100Ω
Platinum 100Ω or 1000Ω RTD
20Ω max. round trip lead resistance
WIRE OUTPUT 1
Refer to the wiring diagram for your configuration code and connect to the slots indicated.
PM3 [C] _ AAAG _: Switched DC or Open Collector
PM3 [E] _ AAAN _: Mechanical Relay 5A Form C Relay
WIRE OUTPUT 2
PM3 [J ] AAAG : Mechanical Relay 5A Form A Relay
CONNECT POWER
CE DECLARATION OF CONFORMITY
KEYPAD OVERVIEW
INTRODUCTION TO KEYPAD AND MENU BASICS
Pages, Menus and Keypad Basics
Note: You must read and understand the role of each key on your controller keypad before proceeding.
See Panel 7 – Keyboard Overview
These instructions are not inclusive. This Quick Start Guide (QSG) is meant to be a quick reference to show you how to navigate to frequently used areas of the controller. As an example; setting process outputs are not documented in this QSG. Refer to the User’s Guide for more detailed instructions.
Note: Diagrams might vary depending on programming the controller.
Introduction to the Operations & Setup Pages
Upon power up, the display will default to home. The left red displays process (PV). The right green displays limit status. Setup page is a collection of menus having parameters changed typically one time when controller is first installed or each time hardware changes occur. Operations page is a collection of menus having parameters changed more frequently.
Menus in each page contain common parameters that affect a particular function of the controller. Ex. Analog Input, Limit, Outputs and Alarms are commonly used functions. Parameters are grouped for each function. The Global function is where to set the display units between °F and °C. Set units first if using °C as default is °F.
Setup Page
To enter the Setup Page,
press both arrow keys for 6 seconds.
Use arrow keys to select menu.
Press advance key to enter selected Menu.
Press the reset key for 2 secs. at any point within the menu to return home.
Operations Page
To enter the Operations Page,
press both arrow key for 3 seconds.
Use arrow keys to select menu.
Press advance key to enter selected Menu.
Press the reset key for 2 secs. at any point within the menu to return home.
SET INPUT
SET LIMIT
SET OUTPUTS
SET ALARM
SET ALARM SET POINTS
MESSAGES
