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CLS200 Series User’s Guide Chapter 6: Enhanced Features
Doc.# 0600-3050-2000 Watlow Anafaze 123
3. Press
BACK
several times until the normal loop display
appears. The output percentage of loop 1 will now con-
trol the setpoint of loop 2.
To verify that cascade is working as expected, you would
follow these steps:
1. Set loop 1 to MANUAL and the OUTPUT to 0%. Loop 2 set-
point should equal 150 (BASE SP).
2. Adjust loop 1 MANUAL OUTPUT to 50%. Loop 2 setpoint
should equal 170 (BASE SP + 50% of HT SPAN)
3. Adjust loop 1 MANUAL OUTPUT to 100%. Loop 2 set-
point should equal 190 (BASE SP + HT SPAN).
4. To complete the cascade setup, both loop 1 and loop 2
must be configured for inputs, outputs, and alarms.
In addition, the PID parameters of loop 1 must be tuned to
produce the desired effect for the application on the set-
point of loop 2. For a cascade control application that uses
the secondary loop for PID control, loop 1 typically uses
only proportional mode. This must be set for the amount of
change in the process variable to cause a 100% change in
the output level.
The proportional band is selected so the setpoint of the sec-
ondary loop has the desired relationship to the process
variable of the primary loop. In this application, the pro-
portional band (PB) of the primary loop is set to 10˚ F and
the integral and derivative are turned off.
Figure 6.6 Secondary Loop Setpoint Related
to Primary Loop Output
As the temperature of loop 1 drops, the output of loop 1 goes
up proportionally and the setpoint of loop 2 goes up propor-
tionally. Thus heat is added to the system at the element
190°F
150°F
0% 50% 100%
Secondary Loop Setpoint
Process Variable 1
(SP1-PB1)
(SP1)
170°F
150°F 145°F 140°F
Heat Output (%)
(BASE SP + HT SPAN)
(BASE SP)
(eng. units)
SP: Setpoint
PB: Proportional Band
(eng. units)
Primary Loop Output
- CLS200 Series 1
- User’s Guide 1
- Warranty 2
- Table of Contents 3
- 3 Using the CLS200 51 4
- 4 Setup 71 4
- Reversed T/C Detection 85 5
- Keys Do Not Respond 170 7
- List of Figures 9
- List of Tables 13
- 11 Specifications 15
- System Overview 17
- Getting Started 18
- Product Features 19
- CLS200 Parts List 21
- 2_ _–_ _ _ _ _ _ 21
- CLSSI _ _–_ _–_ _ 22
- Technical Description 23
- Front Panel Description 24
- Figure 1.4 CLS200 Front Panel 24
- Figure 1.5 TB50 24
- CLS200 Cabling 25
- External Safety Devices 25
- Power-Fail Protection 26
- Installation 27
- Typical Installation 28
- Recommended Tools 29
- Mounting the Controller 29
- 1.0 inch 7.0 inches 1.6 inch 30
- (25 mm) (178 mm) (41 mm) 30
- 1.0 inch 7.0 inches 0.6 inch 30
- Figure 2.4 Wiring Clearances 31
- Mounting the TB50 32
- DIN Rail Mounting 33
- Mounting the Power Supply 34
- Mounting Environment 35
- Bracket 35
- Mounting Steps 35
- CAUTION! 35
- Mounting 36
- Dimensions 36
- System Wiring 37
- Noise Suppression 38
- Avoiding RFI/EMI 39
- Power Connections 41
- Table 2.2 Power Connections 42
- Connecting TB50 to CLS200 43
- Testing Your System 44
- Sensor Wiring 45
- Input Wiring Recommendations 46
- Thermocouple Connections 47
- RTD Input Connections 48
- Reference Voltage Terminals 48
- Voltage Input Connections 48
- Current Input Connections 49
- Pulse Input Connections 50
- Output Wiring Recommendations 51
- Cable Tie Wraps 51
- Stored in the Controller 52
- Configuring Outputs 53
- Output Connections 53
- Digital Inputs 54
- External Switching Devices 55
- Table 2.5 TB18 Connections 56
- TB50 Connections 57
- Wiring the Serial DAC 60
- Serial Communications 61
- BACK BACK 62
- EIA/TIA-485 Interface 63
- Connections 64
- Signal Common 64
- Termination 64
- Using the CLS200 67
- Front Panel 68
- Front Panel Keys 69
- Displays 71
- Single Loop Display 73
- Alarm Displays 74
- Acknowledging an Alarm 75
- • H/W FAILURE: OFFSET 76
- Job Display 76
- Changing the Setpoint 77
- Selecting the Control Status 77
- Autotuning a Loop 78
- Background 79
- Performing an Autotune 79
- Using Alarms 80
- Process Alarms 82
- Process Alarm Outputs 83
- Alarm Type: Control or Alarm 83
- High and Low Process Alarms 83
- Global Alarm 84
- How to Access the Setup Menus 87
- How to Change a Parameter 88
- Figure 4.1 CLS200 Menu Tree 89
- Load Setup From Job 91
- Save Setup to Job 91
- Job Select Digital Inputs 92
- Output Override Digital Input 93
- Override Digital Input Active 93
- Startup Alarm Delay 94
- Keyboard Lock Status 94
- Power Up Output Status 94
- Process Power Digital Input 95
- Controller Address 95
- Communications Baud Rate 96
- Communications Protocol 96
- Communications Error Checking 96
- AC Line Frequency 97
- EPROM Information 97
- Setup Loop Input Menu 98
- Input Type 99
- Loop Name 100
- Input Units 100
- Input Reading Offset 100
- Reversed T/C Detection 101
- Linear Scaling Parameters 102
- Table 4.9 Display Formats 103
- Reading Range 103
- Display Format 103
- High Process Variable 104
- High Reading 104
- Low Process Variable 104
- Input Filter 105
- Heat or Cool Control PB 107
- Heat or Cool Control TI 107
- Heat or Cool Control TD 107
- Heat or Cool Output Filter 107
- Restore PID Digital Input 108
- Setup Loop Outputs Menu 109
- Heat or Cool Output Type 110
- Heat or Cool Cycle Time 111
- SDAC Mode 111
- SDAC Low Value 111
- SDAC High Value 111
- Heat or Cool Output Action 112
- Heat or Cool Output Limit 112
- WARNING! 113
- Heat or Cool Linearity 114
- Setup Loop Alarms Menu 115
- High Process Alarm Setpoint 116
- High Process Alarm Type 116
- Deviation Alarm Value 116
- High Deviation Alarm Type 117
- Low Deviation Alarm Type 117
- Low Process Alarm Setpoint 118
- Low Process Alarm Type 118
- Alarm Deadband 118
- Manual I/O Test 119
- Test Digital Output 120
- Digital Output Number 120
- Keypad Test 121
- Display Test 121
- Extruder Control 123
- Defaults 124
- HEAT CONTROL PB? 125
- Extruder Control Algorithm 126
- Enhanced Features 127
- Enter 1-9 128
- Process Variable Retransmit 129
- Retransmit Process Variable 130
- Minimum Input 130
- Minimum Output 130
- Maximum Input 130
- Maximum Output 131
- Cascade Control 134
- Setup Loop Cascade Menu 135
- Base Setpoint 136
- Minimum Setpoint 136
- Maximum Setpoint 136
- Heat Span 137
- Cool Span 137
- Ratio Control 140
- Setup Loop Ratio Control Menu 141
- Control Ratio 142
- Setpoint Differential 142
- For this example we have 144
- 0. Press 144
- Remote Analog Setpoint 145
- Differential Control 147
- For this example, we have 148
- +50. Press 148
- Ramp/Soak 149
- Features 150
- Ramp/Soak Menus 152
- Setup Global Parameters Menu 153
- Setup Ramp/Soak Profile Menu 153
- Copy Setup From Profile 154
- Tolerance Alarm Time 154
- Ready Segment Setpoint 154
- Ready Segment Edit Events 155
- External Reset Input Number 155
- Edit Segment Number 156
- Segment Time 156
- Segment Setpoint 156
- Edit Segment Events 157
- Edit Segment Triggers 158
- Segment Tolerance 159
- Last Segment 160
- Repeat Cycles 160
- Using Ramp/Soak 161
- Ramp/Soak Displays 162
- Time Remaining Display 163
- Cycle Number Display 163
- Set Mode Display 163
- Assigning a Profile to a Loop 164
- Running a Profile 164
- Starting a Profile 165
- Holding a Profile 166
- Continuing a Profile 166
- Resetting a Profile 167
- In Case of a Power Failure 168
- Tuning and Control 169
- On/Off Control 170
- Proportional Control 170
- Proportional 171
- Heat and Cool Outputs 172
- Control Outputs 173
- Output Filter 174
- Reverse and Direct Action 175
- Integral Settings 176
- Derivative Settings 176
- Proportional Band Only (P) 177
- PI with Derivative (PID) 177
- When There is a Problem 179
- Troubleshooting Controllers 180
- Failed Sensor Alarms 182
- System Alarms 182
- Other Behaviors 183
- Low Power 184
- Battery Dead 184
- Ambient Warning 184
- H/W Ambient Failure 185
- H/W Gain or Offset Failure 186
- Keys Do Not Respond 186
- Checking Analog Inputs 187
- Earth Grounding 188
- Checking Control Outputs 188
- Testing the TB18 and TB50 189
- Testing Digital Inputs 189
- Supervised Systems 190
- Communications 191
- Ground Loops 191
- NO-Key Reset 192
- Replacing the EPROM 192
- WATLOW ANAFAZE CLS200 193
- Figure 9.3 EPROM Location 194
- Figure 9.4 Remove EPROM 194
- Changing Communications 195
- Installing Scaling Resistors 196
- CLS208 Current Inputs 197
- CLS208 Voltage Inputs 198
- RTD and Thermistor Inputs 199
- CLS216 Input Circuit 200
- CLS216 Current Inputs 200
- CLS216 Voltage Inputs 201
- Configuring Dual DAC Outputs 202
- DUAL DAC 203
- SERIAL DAC 204
- Linear Scaling Examples 205
- Table 10.1 Input Readings 206
- Table 10.2 Scaling Values 206
- Situation 207
- Example 3: A Pulse Encoder 208
- Specifications 209
- Dimensions 210
- TB50 Physical Specifications 212
- Figure 11.4 TB50 Dimensions 213
- Table 11.8 TB50 Connections 213
- SCSI Cable 214
- Table 11.11 Analog Inputs 216
- Table 11.12 Pulse Inputs 217
- Resolution 217
- Table 11.16 Digital Inputs 218
- Analog Outputs 219
- Digital Outputs 219
- Î (dc) +/- 3VÎ (dc) 220
- CLS200 Power Supply 221
- Î (dc) @ 4 A 222
- Î (dc) @ 1.2 A 222
- Dual DAC Specifications 223
- ± 0.75 ± 0.75 ± 0.75 224
- Serial DAC Inputs 226
- Serial DAC Analog Outputs 227
- Glossary 229
- — A filter that allows the 231
- — A filter that 231
- — A power 234
- — The integral function 234
- —An Electronics Industries of 235
- Menu Structure 249
- Declaration of Conformity 250
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