Watlow CPC400 - Manual (Page 8)

List of Figures CPC400 Series User’s Guide
vi Watlow Anafaze Doc. 0600-2900-2000
Figure 2.30—Connecting One CPC400 to a Computer Using EIA/TIA-232 42
Figure 2.31—Four-Wire EIA/TIA-485 Wiring 43
Figure 2.32—Two-Wire EIA/TIA-485 Wiring 43
Figure 2.33—Recommended System Connections 44
3 Operation and Setup 47
Figure 3.1—General Navigation Map 48
Figure 3.2—Keypad Navigation 49
Figure 3.3—Loop Display 50
Figure 3.4—Loop Display with Alarm Code 51
Figure 3.5—Display for Failed Sensor Alarm 51
Figure 3.6—Input Scaling 59
Figure 3.7—Activation and Deactivation of Process Alarms 66
Figure 3.8—Application Using Process Variable Retransmit 68
Figure 3.9—Secondary Set Point When Primary Loop Has Heat and Cool Outputs 70
Figure 3.10—Secondary Set Point When Primary Loop Has Heat Output Only 70
Figure 3.11—Example Application Using Cascade Control 72
Figure 3.12—Relationship of Secondary Loop Set Point to Primary Loop Process
Variable in Cascade Example 73
Figure 3.13—Relationship Between the Process Variable on the Master Loop and the
Set Point of the Ratio Loop 74
Figure 3.14—Application Using Ratio Control 75
4 Tuning and Control 81
Figure 4.1—On/Off Control 82
Figure 4.2—Proportional Control 83
Figure 4.3—Proportional and Integral Control 83
Figure 4.4—Proportional, Integral and Derivative Control 84
Figure 4.5—Time Proportioning and Distributed Zero Crossing Waveforms 88
5 Menu and Parameter Reference 91
Figure 5.1—Operator Parameter Navigation 92
Figure 5.2—Setup Menus and Parameters 95
Figure 5.3—The Effect of Tune Gain on Recovery from a Load Change 115
Figure 5.4—Linear and Nonlinear Outputs 121
6 Troubleshooting and Reconfiguring 139
Figure 6.1—Removal of Electronics Assembly from Case 155
Figure 6.2—Screw Locations on PC Board 155
Figure 6.3—Location of Flash Memory Chip 156
Figure 6.4—Removal of Flash Memory Chip 156
Figure 6.5—Jumper Configurations 157
Figure 6.6—Input Circuit 158
Figure 6.7—Serial DAC Voltage and Current Jumper Positions 162
Figure 6.8—Dual DAC 163