Watlow PM PLUS 6 - Page 7

Watlow PM PLUS™ 6 • 7 • Table of Contents
Control Methods ..................................................88
Output Configuration ...........................................88
Auto (closed loop) and Manual (open loop) Control ...................88
On-Off Control ................................................89
Proportional and (P) Control .....................................90
Proportional and Integral (PI) Control ..............................90
Proportional, Integral and Derivative (PID) Control ....................91
Dead Band ...................................................91
Variable Time Base ............................................92
Single Set Point Ramping .......................................92
Compressor Control ...........................................93
Differential Control ............................................94
Ratio Control .................................................94
Duplex Control ................................................94
Motorized Valve Control ........................................94
Timer Function ...................................................94
Alarms .........................................................96
Process and Deviation Alarms ....................................96
Set Points ...................................................96
Hysteresis ...................................................97
Latching .....................................................97
Silencing Alarms ..............................................98
Blocking Alarms ..............................................98
Current Sensing ..................................................98
Open and Shorted Load Circuit Detection ...........................98
Open Loop Detection ...........................................99
Programming the Function Key ......................................99
Security Features .................................................99
Read Lock and Set Lock Levels ...................................99
Passwords ..................................................101
Modbus
®
- Using Programmable Memory Blocks .......................102
CIP Communications: DeviceNet or EtherNet/IP .........................103
CIP Implicit Assemblies ........................................103
Compact Assembly Class ...................................104
Modifying Implicit Assembly Members ........................104
PCCC - (Programmable Controller Communications Commands) ..........104
Profibus DP (Decentralized Peripherals) ..............................105
Chapter 9: Applications ...................................106
Example 1: Single Loop Control .....................................106
Example 2: Sensor Backup .........................................106
Example 3: Square Root ...........................................107
Example 4: Ratio .................................................107
Example 5: Differential ............................................108
Example 6: Wet Bulb / Dry Bulb .....................................109