Watlow ez-zone pm - Page 8

Watlow EZ-ZONE
®
PMI Controller • 4 • Table of Contents
Table of Contents (cont.)
Single Set Point Ramping ................................198
Cascade Control .......................................198
Compressor Control ....................................198
Differential Control .....................................199
Ratio Control ..........................................199
Duplex Control ........................................199
Motorized Valve Control .................................199
Timer Function ..........................................200
Setting up the timer function .............................200
Alarms ................................................202
Process and Deviation Alarms ............................203
Set Points ............................................203
Hysteresis ............................................203
Latching .............................................203
Silencing .............................................204
Blocking .............................................204
Current Sensing .........................................204
Open and Shorted Load Circuit Detection ....................204
Open Loop Detection ...................................205
Programming the EZ Key/s ................................205
Using Lockout and Password Security .......................206
Using Lockout Method 1 (Read and Set Lock) ................206
Using Lockout Method 2 (Password Enable) .................208
Modbus - Using Programmable Memory Blocks ................210
CIP - Communications Capabilities ..........................210
CIP Implicit Assemblies .................................211
PCCC - (Programmable Controller Communications Commands) ..212
Profibus DP - (Decentralized Peripherals) ....................213
Software Configuration ...................................213
Using EZ-ZONE Configurator Software ......................213
Chapter 10: Applications ...........................217
Example 1: Single Loop Control ..............................217
Example 2: Sensor Backup ..................................217
Example 3: Square Root ....................................218
Example 4: Ratio ..........................................218
Example 5: Differential .....................................219
Example 6: Cascade .......................................219
Example 7: Wet Bulb / Dry Bulb ..............................221
TC