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Introduction
CAS User’s Guide 3
Specifications
This section contains specifications for inputs, serial interface, system
power requirements, environmental specifications, and physical
dimensions.
Analog Inputs
Number of Analog Inputs: 16 single-ended/ common ground, plus one
pulse input.
Input Switching: solid state MUX switching.
Input Sampling Rate: 1.5x/second (667 ms) at 60 Hz; 1.25x/second
(300 ms) at 50 Hz.
Analog Over Voltage Protection: ±20 V referenced to digital ground.
A/D Converter: Integrates voltage to frequency.
Input Range: -10 to +60 mV. Other ranges are available with scaling
resistors.
Resolution: 0.006%, greater than 14 bits. (This is the internal
measurement resolution, not the display resolution.)
Calibration: Automatic zero and full scale.
T/C Break Detection: Pulse type for upscale break detection.
Milliamp inputs: 0-20 mA (3 ohms resistance) or 0-10 mA (6 ohms
resistance), with scaling resistors.
Thermocouple Ranges and Accuracy
T/C Type Range in ºFRange in ºC *Accuracy:
25ºC
Ambient
*Accuracy:
0 - 50º C Full
Temp. Range
ºC ºF ºC ºF
J T/C -350 to 1400 -212 to 750 ±0.5 ±0.9 ±1.1 ±2.0
K T/C -450 to 2500 -268 to 1371 ±0.6 ±1.2 ±1.35 ±2.7
T T/C -450 to 750 -268 to 399 ±1.3 ±2.4 ±2.9 ±5.4
S T/C 0 to 3200 -18 to 1760 ±2.5 ±4.5 ±5.6 ±10.1
R T/C 0 to 3210 -18 to 1766 ±2.5 ±4.5 ±5.6 ±10.1
B T/C 150 to 3200 +66 to 1760 ±6.6 ±12.0 ±14.9 ±27.0
N T/C -450 to 2370 -268 to 1299 ±1.0 ±1.8 ±2.25 ±4.1
PL-II T/C +50 to 2012 +10 to 1100 ±0.6 ±1.0 ±1.2 ±2.2
* True for 10% to 100% of span.
- User ’s Guide 1
- Warranty 2
- Contents 3
- CAS User’s Guide iii 5
- Overview 7
- System Diagram 8
- Parts List 8
- 10
- Introduction 11
- Specifications 13
- Digital Inputs 14
- Digital Outputs 14
- System Digital Outputs 14
- Miscellaneous Specifications 15
- 6 CAS User’s Guide 16
- Installation 17
- Precautions and Warnings 18
- Recommended Tools 19
- CAS Mounting Procedure 20
- TB-50 Mounting Instructions 21
- Grounding 24
- Thermocouple Wiring 24
- Input Wiring 24
- Communications Wiring 25
- Wiring: Noise Suppression 26
- General Wiring 27
- Connections Test 28
- Wiring Outputs 29
- Using the Cable Tie Wraps 30
- Alarm Output Connections 31
- Watchdog Timer 31
- TB-50 Connections 32
- Input Scaling 33
- Scaling Values 34
- Scaling and Calibration 35
- T/C Inputs 36
- Connecting Thermocouples 36
- Current Inputs 36
- Voltage Inputs 37
- Unused Inputs 37
- Serial Communications 38
- JU 1JU 1 39
- Configuring Communications 40
- Recommended Wire Gauges 41
- 32 CAS User’s Guide 42
- Using the CAS 43
- Front Panel 44
- Single Channel Display 46
- Job Display 47
- Change Setpoint 48
- Acknowledging an Alarm 49
- Resetting an Alarm 49
- 40 CAS User’s Guide 50
- How to Enter the Setup Menus 51
- How to Edit a Menu 51
- CAS Menus 52
- Setup Global Parameters Menu 53
- Save Setup to Job 54
- Job Select Inputs 54
- Job Select Input Polarity 55
- Startup Alarm Delay 55
- Keyboard Lock Status 56
- Scanner Address 56
- Communications Error Checking 56
- Communications Baud Rate 57
- Allen-Bradley Protocol 57
- AC Line Frequency 57
- Digital Output Polarity 58
- EPROM Information 58
- Setup Channel Inputs 59
- Pulse Sample Time 60
- Channel Name 60
- Input Units 61
- Input Reading Offset 61
- Linear Scaling Menus 62
- Variable 63
- InputR eading 63
- Display Format 64
- High Process Value 64
- High Reading 65
- Low Process Value 65
- Low Reading 66
- Input Filter 66
- Setup Channel Alarms 67
- Alarm Delay 69
- High Process Alarm Setpoint 69
- High Process Alarm Type 69
- Deviation Alarm Value 70
- High Deviation Alarm Type 70
- Low Deviation Alarm Type 71
- Low Process Alarm Setpoint 72
- Low Process Alarm Type 72
- Alarm Deadband 73
- Manual I/O Test 75
- Digital Output Test 76
- Keypad Test 76
- Troubleshooting 77
- Manual System Reset 78
- Returning the Unit 78
- TB-50 Test 79
- Checking an Analog Input 79
- Checking Digital I/O 79
- Digital Input Test 80
- Computer Problems 81
- Ground Loops 82
- Software Problems 82
- User-Written Software 82
- Changing the EPROM 83
- Appendix: Linear Scaling 85
- Examples 85
- Example 2 86
- Example 3 87
- 78 CAS User’s Guide 88
- Glossary 89
- 88 CAS User’s Guide 98
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