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CLS200 Series User’s Guide Chapter 8: Tuning and Control
Doc.# 0600-3050-2000 Watlow Anafaze 157
Control Outputs
The controller provides open collector outputs for control.
These outputs normally control the process using solid
state relays.
Open collector outputs can be configured to drive a serial
digital-to-analog converter (Serial DAC) which, in turn,
can provide 0 to 5 V
Î (dc), 0 to 10 VÎ (dc) or 4 to 20 mA
control signals to operate field output devices.
Output Control Signals
The following sections explain the different control output
signals available.
On/Off
When on/off control is used, the output is on or off depend-
ing on the difference between the setpoint and the process
variable. PID algorithms are not used with on/off control.
The output variable is always off or on (0% or 100%).
Time Proportioning (TP)
With time proportioning outputs, the PID algorithm calcu-
lates an output between 0 and 100%, which is represented
by turning on an output for that percent of a fixed, user-se-
lected time base or cycle time.
The cycle time is the time over which the output is propor-
tioned, and it can be any value from 1 to 255 seconds. For
example, if the output is 30% and the cycle time is 10 sec-
onds, then the output will be on for 3 seconds and off for 7
seconds. Figure 8.5 shows examples of time proportioning
and distributed zero crossing (DZC) waveforms.
Figure 8.5 Time Proportioning and Distributed
Zero Crossing Waveforms
Time Proportioning (30%)
On
Off
03 10
Seconds
Cycle Time set to 10
Distributed Zero
01 34 6
AC Cycle
Crossing (33%)
- 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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