Sensing and Control
SC Instrumentation
Signal Conditioning,
Self-Calibrating
Digital Indicators
Model SC2001
Models SC1000 & SC2000
Model SC3004
Sensotec Sensors
Honeywell
Sensotec Sensors
2080 Arlingate Lane
Columbus, Ohio 43228, USA
Telephone: (614)850-5000
FAX: (614)850-1111
Toll Free: 1-800-848-6564
E-mail: service@sensotec.com
http://www.honeywell.com/sensing
http://www.sensotec.com
SC Series Instruction Manual
Models SC1000, SC2000, SC2001 and SC3004
Document Number: 008-0608-00
Rev. C: February, 2005
WARNING
The operator of this instrument is advised that if the equipment is used in a manner not specified in this manual, the protection provided by the equipment may
be impaired.
CAUTION
Only qualified, service-trained personnel who are aware of the hazards involved should
remove the cover from the instrument or connect external wiring to the instrument.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop devices, or in any other
application where failure of the product could result in personal injury.
Failure to comply with these instructions could result in death or serious injury.
Contents
Contents
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1 About This Manual . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.2 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.3 Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.2 Related Documents . . . . . . . . . . . . . . . . . . . . . . 11
1.3 What is the SC Series? . . . . . . . . . . . . . . . . . . . . 12
1.3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.3.2 Chassis Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.3.3 Channel Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.4 What is Signature Calibration? . . . . . . . . . . . . . . 14
1.4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4.2 Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4.3 Information Stored . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 2
Getting Started Quickly . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Locate Required Parts and Information . . . . . . . 15
2.2 Connect the Transducer to the Correct Channel of the Instru-
ment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3 Turn on the Instrument . . . . . . . . . . . . . . . . . . . . 16
2.4 Use the SETUP Menus to Enter Transducer Information 17
2.5 Calibrate the Transducers to Their Channels . . . 17
2.6 The SC Series Instrument is Ready for Use . . . . 17
Chapter 3
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 INITIALIZE Mode . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 RUN Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.2 [VALUE] button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.3 [CLEAR] Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.4 [CHANNEL] button . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.3.5 [TARE] button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.3.6 Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4 ERROR mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.5 SETUP Menu mode . . . . . . . . . . . . . . . . . . . . . . 23
3.5.1 Available Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.5.2 Entering and Exiting the SETUP Menu mode . . . . . . . 23
3.5.3 Moving Through SETUP Menus and Menu Items . . . . 23
3.5.4 Exiting the SETUP Menu mode . . . . . . . . . . . . . . . . . . 23
Chapter 4
Chassis Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SC Series Instruction Manual page 3
25
4.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3 Models SC1000 and SC2000 . . . . . . . . . . . . . . . 27
4.3.1 Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.2 External Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.3 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.4 Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.3.5 Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3.6 Bench Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3.7 Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3.8 Internal Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3.9 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.3.10 Vehicle Power Option . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.3.11 Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.4 Model SC2001 . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.1 Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.2 External Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.3 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.4 Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.5 Internal Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.6 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.7 Vehicle Power Option . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.8 Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.5 Model SC3004 . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5.1 External Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5.2 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5.3 Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5.4 Bench Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5.5 Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.6 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.7 Internal Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.8 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.9 Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 5
System Connector . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.2 System Connector Pinout . . . . . . . . . . . . . . . . . 36
5.3 Function Input Pins . . . . . . . . . . . . . . . . . . . . . . . 37
5.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.3.2 Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.4 Limit Output Pins . . . . . . . . . . . . . . . . . . . . . . . . 38
5.4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.4.2 Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Chapter 6
System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.2 Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
SOFTWARE REVISION
6.2.1
6.2.2
CONFIGURATION
6.2.3
DIAGNOSTICS
6.2.4
INSTALL CHANNEL
6.2.5
DELETE CHANNEL
6.2.6
DEFAULT CHANNEL
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . 41
Menu Item . . . . . . . . . . . . . . . . . . 41
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . 41
Menu Item . . . . . . . . . . . . . . . . . . . . 42
Menu Item . . . . . . . . . . . . . . . . . . . . . 44
Menu Item . . . . . . . . . . . . . . . . . . . . 44
page 4 008-0608-00
Chapter 7
Serial Communications . . . . . . . . . . . . . . . . . . . . . . 47
Contents
7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.3 Communications Protocol . . . . . . . . . . . . . . . . . . 48
7.3.1 RS-232 vs. RS-485 . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.3.2 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.4 Serial Com Menu . . . . . . . . . . . . . . . . . . . . . . . . 49
7.4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.4.2
INTERFACE
7.4.3
ADDRESS
7.4.4
BAUD RATE
7.4.5
AUTO LINE-FEED
7.4.6
TRANSMIT TEST
7.4.7
LEAVE MENU
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . . 49
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . . 49
Menu Item . . . . . . . . . . . . . . . . . . . . 49
Menu Item . . . . . . . . . . . . . . . . . . . . . 49
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . 49
Chapter 8
Display Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.2 Menu Items for Models SC1000, SC2000, SC2001 51
UPPER CHANNEL
8.2.1
8.2.2
LOWER CHANNEL
8.2.3
LOWER MODE
8.2.4
DISPLAY DISABLE
Menu Item . . . . . . . . . . . . . . . . . . . . . 51
Menu Item . . . . . . . . . . . . . . . . . . . . 51
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . 51
Menu Item . . . . . . . . . . . . . . . . . . . 51
8.3 Menu Items for Model SC3004 . . . . . . . . . . . . . . 51
POWER-ON CHANNEL
8.3.1
Menu Item . . . . . . . . . . . . . . . . . . 51
Chapter 9
Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.1 Understanding Limits, Set Points and Return Points 53
9.2 Limit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.2.1 Actions When Activated . . . . . . . . . . . . . . . . . . . . . . . . 54
9.2.2 Scan Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.3 Limit Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.3.2
LIMIT.ENABLE
9.3.3
LIMIT.SETPOINT
9.3.4
LIMIT.RETURN PNT
9.3.5
LIMIT.ENERGIZE
9.3.6
LIMIT.LATCHING
9.3.7
LIMIT.CHANNEL
9.3.8
LIMIT.SOURCE
9.3.9
LEAVE MENU
Menu Item . . . . . . . . . . . . . . . . . . . . . . 55
Menu Item . . . . . . . . . . . . . . . . . . . . 55
Menu Item . . . . . . . . . . . . . . . . . . . 55
Menu Item . . . . . . . . . . . . . . . . . . . . 55
Menu Item . . . . . . . . . . . . . . . . . . . . 57
Menu Item . . . . . . . . . . . . . . . . . . . . . 57
Menu Item . . . . . . . . . . . . . . . . . . . . . . 57
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . 57
Chapter 10
Strain-Gage Input Channel . . . . . . . . . . . . . . . . . . . .
59
10.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
10.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10.3 Calibration Procedure . . . . . . . . . . . . . . . . . . . . 61
10.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 62
10.5 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10.5.1
OPERATION
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . 63
SC Series Instruction Manual page 5
10.5.2
10.5.3
10.5.4
10.5.5
10.5.6
10.5.7
10.5.8
10.5.9
DISPLAY SETUP
AUXn FUNCTION
CALIBRATION TYPE
CALIBRATION DATA
CALIBRATE
DAC SETUP
SIGNATURE MODULE
DIAGNOSTICS
Sub-Menu . . . . . . . . . . . . . . . . . . . . . 65
Menu Items . . . . . . . . . . . . . . . . . . . . 66
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . 71
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . . 73
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . 75
Menu Item . . . . . . . . . . . . . . . . . . 67
Sub-Menu . . . . . . . . . . . . . . . . . . 69
Sub-Menu . . . . . . . . . . . . . . . . . . 74
10.6 Analog Output Configuration . . . . . . . . . . . . . . 76
10.6.1 Identifying the Output Type . . . . . . . . . . . . . . . . . . . . 76
10.6.2 Channel Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . 76
10.6.3 Output Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10.7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 77
10.7.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
10.7.2 Common Problems and Solutions . . . . . . . . . . . . . . . 77
Chapter 11
AC/AC-LVDT Input Channel . . . . . . . . . . . . . . . . . . . 79
11.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
11.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
11.3 Calibration Procedure . . . . . . . . . . . . . . . . . . . . 81
11.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 82
11.5 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . 83
11.5.1
11.5.2
11.5.3
11.5.4
11.5.5
11.5.6
11.5.7
11.5.8
OPERATION
DISPLAY SETUP
AUXn FUNCTION
CALIBRATION TYPE
CALIBRATION DATA
CALIBRATE
DAC SETUP
DIAGNOSTICS
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . . 83
Sub-Menu . . . . . . . . . . . . . . . . . . . . . 85
Menu Items . . . . . . . . . . . . . . . . . . . . 85
Menu Item . . . . . . . . . . . . . . . . . . 87
Sub-Menu . . . . . . . . . . . . . . . . . . 88
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . 89
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . . 91
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . 92
11.6 Electrical Null and Transducer Mounting . . . . . 93
11.6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
11.6.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
11.7 Analog Output Configuration . . . . . . . . . . . . . . 94
11.7.1 Identifying the Output Type . . . . . . . . . . . . . . . . . . . . 94
11.7.2 Channel Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . 94
11.7.3 Output Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
11.8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 95
11.8.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
11.8.2 Common Problems and Solutions . . . . . . . . . . . . . . . 95
page 6 008-0608-00
Chapter 12
High-Level Input Channel . . . . . . . . . . . . . . . . . . . .
12.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
12.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
12.2.1 Channel Connector . . . . . . . . . . . . . . . . . . . . . . . . . . 98
12.2.2 Bi-polar Voltage Amplifiers . . . . . . . . . . . . . . . . . . . . . 99
12.2.3 “3-wire Voltage” Amplifiers . . . . . . . . . . . . . . . . . . . . . 100
12.2.4 “3-wire Voltage” Amplifiers with Single-wire Shunt Cal 101
12.2.5 “3-wire Current” Amplifiers . . . . . . . . . . . . . . . . . . . . 102
12.2.6 “2-wire Current” Amplifiers with Buffered Shunt Cal . 103
12.2.7 “2-wire Current” Amplifiers with Single-wire Shunt Cal 104
12.2.8 Low Voltage DC-DC LVDTs . . . . . . . . . . . . . . . . . . . . 105
97
12.3 Excitation and Signal Jumpers . . . . . . . . . . . . . 106
12.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
12.3.2 Setting Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Contents
12.4 Calibration Procedure . . . . . . . . . . . . . . . . . . . . 107
12.5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 108
12.6 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 109
12.6.1
12.6.2
12.6.3
12.6.4
12.6.5
12.6.6
12.6.7
12.6.8
OPERATION
DISPLAY SETUP
AUXn FUNCTION
CALIBRATION TYPE
CALIBRATION DATA
CALIBRATE
DAC SETUP
DIAGNOSTICS
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . 109
Sub-Menu . . . . . . . . . . . . . . . . . . . . . 111
Menu Items . . . . . . . . . . . . . . . . . . . 112
Menu Item . . . . . . . . . . . . . . . . . . 113
Sub-Menu . . . . . . . . . . . . . . . . . . 115
Menu Item . . . . . . . . . . . . . . . . . . . . . . . . 117
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . 119
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . 120
12.7 Analog Output Configuration . . . . . . . . . . . . . . . 121
12.7.1 Identifying the Output Type . . . . . . . . . . . . . . . . . . . . 121
12.7.2 Channel Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . 121
12.7.3 Output Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
12.8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 122
12.8.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
12.8.2 Common Problems and Solutions . . . . . . . . . . . . . . . 122
Chapter 13
Relay Output Channel . . . . . . . . . . . . . . . . . . . . . . . . 123
13.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
13.1.1 First Channel Installed . . . . . . . . . . . . . . . . . . . . . . . . 123
13.1.2 Second Channel Installed . . . . . . . . . . . . . . . . . . . . . 123
13.1.3 Third Channel Installed . . . . . . . . . . . . . . . . . . . . . . . 123
13.1.4 Fourth Channel Installed . . . . . . . . . . . . . . . . . . . . . . 123
13.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
13.3 Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . 125
13.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 126
13.5 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 127
13.5.1
DIAGNOSTICS
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . 127
Chapter 14
DAC Output Channel . . . . . . . . . . . . . . . . . . . . . . . .
129
14.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
14.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
14.3 Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . 131
14.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 132
14.5 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 133
14.5.1
14.5.2
DAC SETUP
DIAGNOSTICS
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . . 133
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . 134
14.6 Analog Output Configuration . . . . . . . . . . . . . . . 135
14.6.1 Identifying the Output Type . . . . . . . . . . . . . . . . . . . . 135
14.6.2 Channel Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . 135
14.6.3 Output Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
14.7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 136
14.7.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
14.7.2 Common Problems and Solutions . . . . . . . . . . . . . . . 136
SC Series Instruction Manual page 7
Chapter 15
Split Display Virtual Channel . . . . . . . . . . . . . . . . . . 139
15.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
15.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
15.3 Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . 139
15.4 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . 140
15.5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 140
Chapter 16
Mathematics Virtual Channel . . . . . . . . . . . . . . . . . 143
16.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
16.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
16.3 Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . 145
16.4 Channel Menu . . . . . . . . . . . . . . . . . . . . . . . . . 146
16.4.1
16.4.2
16.4.3
16.4.4
16.4.5
16.4.6
SENSOCODE P/N
USER VALUES
VIEW SENSOCODE
VIEW COMMANDS
DISPLAY SETUP
POWER-ON SOURCE
Menu Item . . . . . . . . . . . . . . . . . . . . 146
Sub-Menu . . . . . . . . . . . . . . . . . . . . . . . 146
Menu Item . . . . . . . . . . . . . . . . . . . 146
Sub-Menu . . . . . . . . . . . . . . . . . . . . 146
Sub-Menu . . . . . . . . . . . . . . . . . . . . . 147
Menu Item . . . . . . . . . . . . . . . . . . . 148
16.5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 149
Chapter 17
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
17.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
17.2 Error Message List . . . . . . . . . . . . . . . . . . . . . . 152
Chapter 18
Setup Menu Reference . . . . . . . . . . . . . . . . . . . . . . . 157
18.1 Navigation instructions . . . . . . . . . . . . . . . . . . . 157
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
page 8 008-0608-00
1.1 About This Manual
Chapter 1
Introduction
Introduction1
1.1.1 Scope
1.1.2 Conventions
1.1.3 Organization
This manual will explain the setup, features and operation of 3rd generation SC
Series instruments, specifically the models SC1000, SC2000, SC2001 and
SC3004.
Further information about customer specific programming and setup will be
explained on the Customer Information Sheet that is provided with every instrument.
This manual uses the following conventions to present information:
[TEXT IN BRACKETS] The label of a front panel button.
DISPLAY
-> Indicates that what follows is an item from a
Chapter 1, “Introduction”, offers general information about the SC Series and
this instruction manual.
Chapter 2, “Getting Started Quickly”, provides an overview of how to get
started quickly if your instrument and transducers were ordered at the same time,
or if Signature Calibration is used.
Text that appears on the display, such as error
messages or menu items.
sub-menu, such as
SYSTEM MENU
->
DIAGNOSTICS
.
Chapter 3, “Operating Modes”, discusses the significant features of the SC
Series and operation procedures when the instrument is in the INITIALIZE, RUN,
ERROR or SETUP modes.
Chapter 4, “Chassis Models”, explains the differences between the SC1000,
SC2000, SC2001 and SC3004 chassis. Information relating to the hardware
chassis such as panel and rack mounting is given.
Chapter 5, “System Connector”, contains information about wiring to the 25-pin
System connector to access the Limit Outputs, Function Inputs and serial communications.
Chapter 6, “System Menu”, discusses the System Menu which allows you to
examine and change settings that affect the operation of the chassis.
Chapter 7, “Serial Communications”, briefly describes RS-232 and RS-485
communications. It also shows how to use the
settings and test the RS-232 or RS-485 communications.
Chapter 8, “Display Menu”, describes the Display Menu which allows you to
change what is displayed on the lower line of the SC2000 and SC2001 instruments.
Chapter 9, “Limits”, discusses how the limits operate and describes how to alter
their settings via the Limit Menus.
Chapter 10, “Strain-Gage Input Channel”, explains how to wire, configure,
SERIAL COM
Menu to examine the
SC Series Instruction Manual page 9
operate and calibrate Strain-Gage Input Channels with your transducers.
Chapter 11, “AC/AC-LVDT Input Channel”, explains how to wire, configure, operate
and calibrate AC/AC-LVDT Input Channels with your transducers.
Chapter 12, “High-Level Input Channel”, explains how to wire, configure, operate
and calibrate High-Level Input Channels with your amplified transducers, in-line amplifiers, or DC-DC LVDTs.
Chapter 13, “Relay Output Channel”, describes how a Relay Output channel can
enable additional limits in the instrument.
Chapter 14, “DAC Output Channel”, explains the configuration and operation of
additional digital-to-analog voltage or current outputs.
Chapter 15, “Split Display Virtual Channel”, shows how you can display two values
from any of the channels in the instrument at the same time.
Chapter 16, “Mathematics Virtual Channel”, describes the flexibility of customerspecific SensoCode programming.
Chapter 17, “Error Messages”, lists error messages that the instrument may display,
describes their causes and, where possible, suggests solutions.
Chapter 18, “Setup Menu Reference”, is a list of all SETUP menus and a cross-reference to related information in this instruction manual.
page 10 008-0608-00
1.2 Related Documents
Customer Information Sheet
Introduction1
Every instrument is shipped with a Customer Information Sheet which documents
important information specific to each instrument, such as:
• part number,
• date of manufacture,
• list of all installed channels and their setup information,
• customer specific SensoCode programming of Mathematics Virtual channels
and operation notes.
Communications Guide
Supplemental Instructions
The “SC Series Communications Guide”, document 008-0610-00, describes in
detail how to communicate with an SC Series instrument using RS-232 and RS-
485. Wiring diagrams, sample programs, and descriptions of each command are
included.
A printed copy of this document is available for order, or you may download it from
http://www.honeywell.com/sensotec.
If an instrument is configured with Mathematics Virtual channels, one or more sets
of Supplemental Instructions may be included. These instructions contain important information about which indicator lights, Function Input pins and/or Limit Output pins of the System connector are used by the Mathematics Virtual channel.
SC Series Instruction Manual page 11
1.3 What is the SC Series?
The SC Series of Signal Conditioners/Indicators are versatile, multi-channel devices
designed to operate with many different types of sensors. Several different chassis
types, Input channels, and Output channels are available to allow the configuration of
an SC instrument to meet a variety of measurement and control needs. The operation
of an SC instrument is based on digital technology to provide improved accuracy,
superior ease of setup, and a wealth of features.
1.3.1 Features
1.3.2 Chassis Models
1.3.3 Channel Types
Input Channels
The main features of the models SC1000, SC2000, SC2001 and SC3004 are:
• Four alarm limits (optional sixteen), with versatile setup (not available on Model
SC1000)
• Automatic setup, calibration, and scaling of strain-gage sensors through the use
of Signature Calibration
• Field selectable, digital, low-pass filtering (“damping”) on each Input channel
• Up to ±50,000 part resolution
• Field selectable five-, six - or seven-digit (9,999,999 maximum) display
• RS-232 communications standard (RS-485 optional)
• Local or remote setup using the RS-232 or RS-485 port
• Push-button on/off tare feature
Several models (i.e. chassis types) are available:
• SC1000: 1 to 4 physical channels, 3/8 DIN case, no limits or peak detector
• SC2000: 1 to 4 physical channels, 3/8 DIN case
• SC2001: 1 to 4 physical channels, portable case
• SC3004: 1 to 14 physical channels, 19” rack mount case, 1 to 3 quad-line displays
Channels can be one of three types: Input, Output, or Virtual
Input channels are hardware circuit boards with a unique channel number. Currently,
they are available for the following types of sensors:
• Strain-gage sensors, such as unamplified pressure transducers and load cells
• Sensors with voltage outputs, such as transducers with the Option 2a, 2b, 2c, 2d,
2g, 2j, 2k, 2p, 2t or 2y internal amplifier
• Sensors with current outputs, such as transducers with the Option 2j, 2k or 2n
internal amplifier
• AC-AC LVDTs (Linear Variable Displacement Transducers)
• DC-DC LVDTs
TM
Output Channels
Virtual Channels
page 12 008-0608-00
Output channels are hardware circuit boards with a unique channel number. They
include:
• Relay Output channels, which can add additional limits to the standard four (N/A
on Model SC1000).
• DAC Output channels, which provide additional voltage or current outputs.
Virtual channels are software based devices that occupy a channel number, but not a
physical slot, in an instrument.
• Split Display Virtual channels allow the displaying of any two channel’s track, peak
or valley values at the same time.
• Mathematics Virtual channels run small programs written in an interpretive
language called SensoCode. This provides great flexibility which allows the
SC Series to do many jobs which otherwise requires a personal computer or
PLC.
Introduction1
SC Series Instruction Manual page 13
1.4 What is
Signature Calibration
?
1.4.1 Overview
1.4.2 Benefits
1.4.3 Information Stored
A small integrated circuit is located either inside the transducer, in an in-line package
between the instrument and the transducer, or in the connector of a cable. All data
necessary to set up the transducer with the instrument are stored (even linearity data),
and setup is automatic when a new transducer is connected to the instrument.
The Strain-Gage Input channel of the SC Series is designed to operate with Signature
Calibration. It will automatically set itself up with transducers which contain the memory device, but can also be set up using a front-panel interactive procedure. The Sig-
nature Calibration module can also be programmed from the instrument’s front panel.
Signature Calibration is only available with unamplified strain-gage transducers.
The benefits are:
• The transducer’s Calibration Record is always located where it is needed most...
with the transducer.
• The instrument is always set up correctly with the transducer.
• Interchanging of transducers and instruments is a quick process.
• A User Calibration Data area that can be altered by customers to fit their requirements.
• A Factory Calibration Sheet Data area, unalterable by the customer, can be copied back into the User Calibration Data.
The following information is stored inside transducers equipped with Signature Cali-
bration:
• Full-scale mV/V: The full-scale millivolt-per-volt (mV/V) rating of the transducer
when its full load is applied; also called “calibration factor”.
• Shunt-Cal mV/V: The millivolt-per-volt output of the transducer when the shunt
calibration resistor is placed across its (-)SIGNAL and (-)EXCITATION leads.
• Shunt Resistance: The resistance value, in Ohms, that was used to obtain the
shunt-cal mV/V value above.
• Full-Scale Value: The full scale value of the transducer, in engineering units.
• Engineering Units: The engineering units that the transducer is calibrated in (i.e.
pounds, grams, pascals, inches of water, etc.).
• Serial Number: The serial number of the transducer.
• Excitation Voltage: The magnitude and type of signal used to excite the transducer.
• Linearization Points (optional): These can be used by an instrument using Shunt
Calibration or Millivolt-per-Volt Calibration to correct any non-linearity in the transducer and thus improve the accuracy of the system. An additional “multiple-point
calibration” can be purchased with the transducer that allows linearity correction
information to be placed into its Signature Calibration module.
page 14 008-0608-00
2.1 Locate Required Parts and Information
The following items are required to set up an SC Series instrument with your
transducer:
• SC Series instrument
• Transducers that are to be connected to the instrument
• For each transducer to be connected to the instrument, a connecting cable.
This cable will have a 12-pin, green, plastic connector on one end and the
transducer’s mating connector on the other end. Usually, this cable is ordered
along with the instrument and transducer.
If the connecting cable was not ordered with the instrument, you may need to
make this cable.
• The transducer’s Calibration Record or Certificate of Calibration.
• The Customer Information Sheet that shipped with your instrument. This
sheet describes which cards are installed in each channel.
• Power cord for the instrument.
Chapter 2
Getting Started Quickly
Getting Started Quickly2
2.2 Connect the Transducer to the Correct Channel of the Instrument
For each transducer, attach its connecting cable to the transducer, and then to the
correct 12-pin channel-connector on the instrument.
The Customer Information Sheet indicates which serial numbered transducer is to
be connected to each channel of the instrument.
If the instrument and transducer(s) were not purchased with a connecting cable,
you may need to make this cable. For the transducer’s pin connections, see that
transducer’s calibration record. For the pin connections for that channel of the
instrument, see the appropriate chapter in this manual. For example, if you wish
to wire to a Strain-Gage Input Channel see the chapter “Strain-Gage Input Channel” on page 59.
SC Series Instruction Manual page 15
2.3 Turn on the Instrument
Connect the power cord between the instrument power source and the instrument,
and turn the On/Off switch on the back of the instrument to the On position.
The instrument enters its INITIALIZE mode that lasts a few seconds per channel. As
each channel in the instrument is initialized, the transducer's serial number may be
seen on the display if the transducer has a Signature Calibration Module in it.
NOTICE
If the channel’s display flashes “
instrument has detected a transducer other than the one which was last calibrated with that channel. The instrument is prompting you to apply the
requested load to the transducer so that a “mV/V Calibration” or a “Shunt Calibration” can take place.
After making certain that the correct transducer is connected this channel,
press the [ENTER] button after you have applied the requested load to perform
the calibration.
APPLY 00000.
” (or some other load value), the
NOTICE
If the instrument displays error code 57 or 68, it has detected a transducer
other than the one which was last calibrated with that channel. Furthermore,
the channel cannot perform an automatic calibration because its calibration
type has been set to “Known Load Calibration”.
Either re-connect the correct transducer to the channel, or see “
TYPE
Menu Item” on page 67 to select another calibration type.
CALIBRATION
When the instrument enters its normal operating mode (RUN mode), you will see the
following format on the front panel display:
1• 00000. PSIG
"
where:
• Channel number: “1” is the channel number.
• Value type: The next character indicates the nature of the following value.
A blank character indicates the tracking value. The instrument is “tracking” the signal, continuously updating the display in response to the signal from the transducer.
A “
•" character indicates the peak value (highest value seen since the [CLEAR]
button was last pressed).
A “
–" character indicates the valley value (lowest value seen since the [CLEAR]
button was last pressed).
• Data value: “00000.” displays the value from the transducer in engineering units.
• Units label: “PSIG” indicates the engineering units being used (up to 4 charac-
ters).
• Tare indicator: A “
"“ symbol indicates tare is off; a “Ë“ symbol indicates tare is on.
page 16 008-0608-00
2.4 Use the SETUP Menus to Enter Transducer Information
You can skip this step if:
• You are using a transducer equipped with Signature Calibration, or
• The transducer and instrument were purchased together and set up by Sen-
sotec.
Otherwise, you must enter information about your transducer into the SETUP
menu of the channel to which it is connected. See the appropriate chapter of this
manual for that card type.
2.5 Calibrate the Transducers to Their Channels
You can skip this step if:
• You are using a transducer equipped with Signature Calibration, or
• The transducer and instrument were purchased together and set up by Sen-
sotec.
Otherwise, you must choose a calibration method (e.g. Shunt Calibration, mV/V
Calibration, or Known Load Calibration) appropriate for your application and use
the SETUP menu for that channel to calibrate the channel to the transducer. See
the appropriate chapter of this manual for that card type.
Getting Started Quickly2
2.6 The SC Series Instrument is Ready for Use
See “RUN Mode” on page 20 for information on how to operate the instrument
while it is in the RUN mode.
Apply some test stimulus on the transducer to observe changes in the display.
SC Series Instruction Manual page 17
page 18 008-0608-00
3.1 Operating Modes
3.2 INITIALIZE Mode
Chapter 3
Operating Modes
The SC Series instruments have four modes of operation:
• INITIALIZE, to test the instrument upon power up
• RUN, normal operation
• ERROR, which indicates that an abnormal situation has occurred that
stopped the operation of the instrument
• SETUP, a menu which allows setup and calibration of the chassis and its
channels
Each of these will be described in this chapter.
When the instrument is powered up or otherwise reset, it enters the INITIALIZE
mode. As the instrument enters this mode, all segments of the display and all
front panel indicator lights (if available) illuminate momentarily. Next, each channel
in the instrument is checked for proper operation.
If a problem is detected, the instrument may enter the ERROR mode.
Depending on the type of channel, other actions may occur. For example, a
Strain-Gage channel will calibrate its analog-to-digital converter and attempt to
read the transducer’s Signature Calibration information. If the transducer is
equipped with Signature Calibration, the transducer’s serial number is displayed
momentarily.
Operating Modes3
SC Series Instruction Manual page 19
3.3 RUN Mode
3.3.1 Display
After the INITIALIZE mode finishes, the instrument enters the RUN mode, its normal
mode of operation.
Model SC3004 and upper line of SC1000, SC2000, SC2001
Lower Line of SC1000, SC2000, SC2001
3.3.2 [VALUE] button
The display will show a channel number on the far left, followed by the channel’s operation messages.
For example, a Strain Gage amplifier channel will use the format below:
1• 00000. PSIG
"
where:
• Channel number: “1” is the channel number.
• Value type: The next character indicates the nature of the following value.
A blank character indicates the display is being continuously updated by “tracking”
the input signal to the channel.
A “
•" character indicates the peak value (highest value seen since the [CLEAR]
button was last pressed).
A “
–" character indicates the valley value (lowest value seen since the [CLEAR]
button was last pressed).
• Data value: “00000.” displays the value from the transducer in engineering units.
• Units label: “PSIG” indicates the engineering units being used (up to 4 charac-
ters).
• Tare indicator: A “
The contents of the display’s lower line is selected with the “
"“ symbol indicates tare is off; a “Ë“ symbol indicates tare is on.
DISPLAY MENU
->
LOWER MODE
menu item as either displaying a channel or indicating the status of Limits. See “Indicator Lights” on page 21.
”
3.3.3 [CLEAR] Button
NOTICE
The [VALUE] button is not used by SC1000 instruments in the RUN mode.
After the channel number, the next characters indicate which data value for the displayed channel is shown. There are three (possibly four) data values available from
each channel:
• (blank), tracking data value
•“
•", peak data value, (highest value since the peak/valley detector was cleared)
•“
–", valley data value, (lowest value since the peak/valley detector was cleared)
•“
Û
", percentage of the Analog-to-Digital converter’s full-scale digitizing capability.
This data value is only available when the channel’s “
DIAGNOSTICS->DISPLAY ADC
”
menu item is set to “ON”.
Pressing and releasing the [VALUE] button cycles though the available sources for
data values for the displayed channel.
Pressing and releasing the [CLEAR] button will reset the peak and valley values of the
channel being monitored by the display to the track value. Additionally, any limits in
the instrument that are “latched” will be reset.
NOTICE
The [CLEAR] button is not used by SC1000 instruments in RUN mode.
page 20 008-0608-00
To clear the peak and valley values of all channels simultaneously, use the System connector’s Function Input #2 pin. See “System Connector” on page 35 for
details.
Operating Modes3
To clear the peak and valley values of a single channel regardless of which channel is being monitored by the display, use the channel’s AUX1 or AUX2 control
pins on its connector. See the particular chapter regarding that channel for
details.
3.3.4 [CHANNEL] button
Shunt Calibration Check
3.3.5 [TARE] button
3.3.6 Indicator Lights
If the configuration of the instrument contains more than one channel, the left
most characters of the display indicates which channel the display is monitoring.
Pressing and releasing the [CHANNEL] button will cause the next channel to be
displayed.
On instruments with a dual-line display, the [CHANNEL] button cannot be used to
change which channel the lower line is monitoring. That is selected with the “
->
PLAY MENU
LOWER CHANNEL
” menu item.
DIS-
If the [CHANNEL] button is held down for more than 3 seconds, the present channel’s shunt calibration value (if the channel has shunt calibration available) will be
displayed.
To reset the channel’s display to zero, press the [TARE] button while in RUN
mode. To restore the tare value, press the [TARE] button again. The “Tare” indicator will illuminate when tare is on.
To tare all channels simultaneously, use the System connector’s Function 1 Input
pin. See “System Connector” on page 35.
To tare a single channel regardless of which channel is being monitored by the
display, use the channel’s AUX1 or AUX2 control pins on its connector. See the
particular chapter regarding that channel for details.
Models SC1000, SC2000, SC2001
Model SC3004
A “"“ symbol on the right side of a channel’s display indicates tare is off for that
channel; a “
If the lower line of the display is configured with the “
menu item as “
3 and 4. A “
Ë“ symbol indicates tare is on.
DISPLAY MENU
LIMIT 01-04
"“ symbol indicates a limit is deactivated; a “Ë“ symbol indicates a limit
”, then the lower line will monitor the status of Limits 1, 2,
->
LOWER MODE
is activated. For example:
L1" L2" L3Ë L4
Ë
indicates that Limit 1 and Limit 2 are deactivated and Limit 3 and Limit 4 are activated. Since the SC1000 is not equipped with limits, the lower line of the display
will be blank. See “LOWER MODE Menu Item” on page 51.
These indicators may be overridden by the operation of a Mathematics channel in
special applications.
Front panel lights “L-1”, “L-2”, “L-3”, and “L-4”, monitor the status of Limits 1, 2, 3,
and 4. Model SC3004 instruments also include front panel lights labeled “L-5”, “L6”, “L-7” and “L-8” which monitor the status of optional Limits 5, 6, 7, and 8.
The function of the front panel lights may be overridden by the operation of a
Mathematics channel in special applications.
”
SC Series Instruction Manual page 21
3.4 ERROR mode
The instrument enters the ERROR mode when a critical error occurs that prevents the
instrument from operating. The display alternates between displaying a two-digit code
in the form “ERROR xx ON CH.yy” and a short description of the error. The first two
digits “xx” hold the error code. The last two digits, “yy” is channel number that caused
the error. For example, “
channel 1.
While the instrument is in the ERROR mode, no other operations are taking place
except for limited serial communications capabilities. See “Error Message List” on
page 152 for a list of error codes and their probable causes.
ERROR 60 ON CH.01
” indicates that error number 60 occurred on
page 22 008-0608-00
3.5 SETUP Menu mode
The SETUP Menu mode is used to display or change the settings that control the
operation of the instrument.
Operating Modes3
3.5.1 Available Menus
3.5.2 Entering and Exiting the SETUP Menu mode
3.5.3 Moving Through SETUP Menus and Menu Items
Each major function of the instrument has its own SETUP Menu. See “Setup Menu
Reference” on page 157.
To enter the SETUP Menu mode, press and hold the [UP] and [DOWN] buttons at the
same time until you see “
see the first SETUP Menu item.
The following table shows how to move though menus and menu items, and how to
display or change the setting of a particular item.
Button Action
[UP] or [DOWN] Scroll through available menus, sub-menus or menu items.
[ENTER] Select a menu, sub-menu or menu item
[EXIT] If changing a setting: abandons changes to a menu item
To change the setting of a menu item:
Press [ENTER] to display the current setting, which is preceded by the ‘
Press [UP] or [DOWN] until you see the setting you want. To abandon changes, press
[EXIT]. To accept the new setting and move to the next item, press [ENTER].
SETUP
” on the display. When you release the buttons, you will
Table 3-1: Navigating the Menus
otherwise: leaves the SETUP mode.
*
’ character.
3.5.4 Exiting the SETUP Menu mode
To leave SETUP mode and return to the RUN mode, press [EXIT] at any time.
SC Series Instruction Manual page 23
page 24 008-0608-00
4.1 Introduction
Chapter 4
Chassis Models
The SC Series of Signal Conditioners/Indicators are available in several different
chassis models. In general, each chassis model operates in an identical fashion
and can be ordered with any type of Input channels, Output channels, or Virtual
channels.
Input channels and Output channels are printed circuit boards that occupy a physical slot inside the instrument’s chassis. 12-pin connectors are located on the rear
panel to connect to each Input or Output Channel. Each channel in the instrument
is identified by a number (channel 01, channel 02, etc.).
A Virtual channel exists in software only; it does not occupy a physical slot inside
the instrument’s chassis. There is no rear-panel connector for a Virtual channel.
However, a Virtual channel does require a channel number.
Chassis Models4
SC Series Instruction Manual page 25
4.2 Specifications
Model
SC1000
GENERAL
# Physical channels 1 to 4 1 to 4 1 to 4 1 to 14
# Virtual channels 8888
Case Material Aluminum Aluminum Aluminum Aluminum
PHYSICAL
Form factor 3/8 DIN 3/8 DIN suitcase 2U rack
Mounting bench, panel or rack portable rack
DISPLAY
# characters/line 16 16 16 20
# lines/display2224
# displays 1 1 1 1, 2 or 3
Display type Vacuum
Fluorescent
ENVIRONMENTAL
Storage temp. -30º C to 90º C -30º C to 90º C -30º C to 90º C -30º C to 90º C
Operating temp. 5º C to 40º C 5º C to 40º C 5º C to 40º C 5º C to 40º C
Relative Humidity 80% max. for temperatures up to 31º C; decreasing linearly to 50% max. at
Other indoor use at altitudes up to 2000 m; Pollution Degree 2; Overvoltage Cate-
Model
SC2000
Vacuum
Fluorescent
40º C
gory II
Model
SC2001
Vacuum
Fluorescent
Model
SC3004
Vac uum
Fluorescent
SPECIAL FEATURES
Limits Quantity N/A 4 std., 16 max. 4 std., 12 max. 4 std., 16 max.
Digital, isolated control inputs N/A 4 4 4
POWER
Standard AC powered
(automatic selection)
Optional Vehicle Powered 11-28 VDC, 20W 11-28VDC, 20W 11-28 VDC, 20W N/A
Total Excitation Drive 120 mA max. 120 mA max. 120 mA max. 400 mA max.
100 to 230 VAC,
47 to 63Hz
100 to 230 VAC,
47 to 63Hz
100 to 230 VAC,
47 to 630Hz
page 26 008-0608-00
100 to 230 VAC,
47 to 63Hz
4.3 Models SC1000 and SC2000
Chassis Models4
4.3.1 Differences
4.3.2 External Arrangement
Model SC1000 instruments do not include peak/valley capture or limits features.
All other SC instruments include peak/valley capture and 4 limit (“alarm”) outputs.
The external arrangement of the AC powered SC1000 and SC2000 is given
below.
0123456789ABCDEF
0123456789ABCDEF
4.3.3 Rear Panel
4.3.4 Panel Mounting
Figure 4-1: External Arrangement of AC powered SC1000 and SC2000
The pinout for the 25-pin System connector is provided later in this chapter. The
pinouts for the individual channels are located in the chapter for that channel.
The panel cutout size conforms to the 3/8 DIN standard. Panel-Mounting Jacks
(order code AA928) are available that slide into two slots at the sides of the instrument. Use the following procedure to mount an SC1000 or SC2000 into a panel.
SC Series Instruction Manual page 27
Figure 4-2: Panel Cutout Drawing for SC1000 & SC2000 (not to scale)
Step 1: In the panel or rack, cut a hole as shown above. The panel may be up to 1/4”
in thickness.
Step 2: Use an 0.062" Allen wrench to remove two set screws that hold the Panel-
Mounting Jacks to the case. To do this, insert the wrench into the side slots at
the rear. Remove the screws completely.
Step 3: Remove the Panel-Mounting Jacks by sliding them toward the rear. If the jacks
don't slide easily, tap them gently.
Step 4: Put the instrument through the hole in the panel.
Step 5: Reinsert the Panel-Mounting Jacks into the slide slots. Slide them as far
toward the panel as possible.
Step 6: Reinsert the setscrews and tighten them. This will force the Panel-Mounting
Jacks toward the rear side of the panel, drawing the instrument tightly into
place.
4.3.5 Rack Mounting
4.3.6 Bench Mounting
4.3.7 Case Removal
page 28 008-0608-00
A Rack Mounting Kit (order code AA934) is available for mounting a single SC1000 or
SC2000 into a 19”, 2U rack. It includes the Panel-Mounting Jacks described above as
well as the 19” rack panel.
If bench mounting the instrument, you may want the optional carrying handle/bench
stand (order code AA926).
WARNING
Disconnect the power cord and all cables from the instrument before attempting to remove the case.
Failure to comply with these instructions could result in death or serious
injury.
CAUTION
Use a #0 Phillips screwdriver on the black screws to avoid damaging them.
Failure to comply with these instructions may result in product damage.
Chassis Models4
Removal of rear panel
Remove of case from entire circuit board assembly
4.3.8 Internal Arrangement
The rear panel must be removed in order to install or remove channels.
Step 1: Remove the four black Phillips-head machine screws that secure the back
panel of the instrument to the case. These screws are located on the rear of
the case, one at each of the four corners.
Step 2: Remove the cable shield connection screw to allow the installation or
remove of channels per “Input or Output Channel Installation Procedure” on
page 42.
Step 1: Remove the two Phillips-head screws that secure the front panel.
Step 2: Remove the front panel and disconnect its two connecting cables.
Step 3: Remove the four black Phillips-head machine screws that secure the back
panel of the instrument to the case. These screws are located on the rear of
the case, one at each of the four corners. Do not remove the cable shield
connection screw in the center.
Step 4: The circuit boards will slide out of the rear of the case as a unit.
The figure below shows the names and locations of the printed circuit boards.
Front Panel/Display Board
Assembly
Microprocessor
Board
Power Supply
Board
SensoBus Backplane
Board
Up to 4 Input or Output
Channel boards
(1 shown)
Rear Panel
Figure 4-3: Internal Arrangement of SC1000 and SC2000
Below is a description of each printed circuit board.
•The SensoBus Backplane Board serves as the connection between all
SC Series Instruction Manual page 29
boards in the instrument.
• The Front Panel/Display Board Assembly contains the display and all front panel
controls.
•The Power Supply Board contains the +15V, -15V and +5V power supplies.
•The Microprocessor Board contains the microprocessor, ROM software storage
chip, and the System connector.
•The Hardware Input/Output Channel Boards plug into the remaining four slots
of the SensoBus Backplane Board.
4.3.9 Cleaning
4.3.10 Vehicle Power Option
4.3.11 Fuse Replacement
Turn off the instrument and unplug all connectors. Use a soft cloth or tissue and a
mild cleaner. Do not use liquid or aerosol cleaners. Do not allow any cleaner inside
the instrument.
Model SC1000 and SC2000 instruments are available with a vehicle power option for
operation with batteries and linear DC power supplies. See “Specifications” on
page 26 voltage and power requirements.
NOTICE
Due to the momentary startup inrush current of the instrument’s power supply,
the use of switching power supplies with the SC are not recommended.
The power-line fuses of AC-powered instruments are located within the instrument's
power entry module on the rear panel. Use two 2A, 250V fast-blow fuses (p/n 0293026-00).
page 30 008-0608-00
4.4 Model SC2001
4.4.1 Differences
Chassis Models4
Model SC2001 instruments are SC2000 instruments housed in a portable case.
4.4.2 External Arrangement
The external arrangement of the AC powered SC2001 is given below
.
4.4.3 Front Panel
4.4.4 Case Removal
0123456789ABCDEF
0123456789ABCDEF
Figure 4-4: External Arrangement of AC powered Model SC2001
The pinout for the 25-pin System connector is provided later in this chapter. The
pinouts for the individual channels are located in the chapter for that channel.
WARNING
Disconnect the power cord and all cables from the instrument before attempting to remove the case.
Failure to comply with these instructions could result in death or serious
injury.
Step 1: Remove the 10 Phillips-head machine screws that secure the front panel
to the case.
SC Series Instruction Manual page 31
Step 2: Pull the front panel assembly out of the case.
Step 3: Proceed with Model SC2000 “Case Removal” on page 28.
4.4.5 Internal Arrangement
4.4.6 Cleaning
4.4.7 Vehicle Power Option
4.4.8 Fuse Replacement
See the Model SC2000 “Internal Arrangement” on page 29.
Turn off the instrument and unplug all connectors. Use a soft cloth or tissue and a
mild cleaner. Do not use liquid or aerosol cleaners. Do not allow any cleaner
inside the instrument.
The Model SC2001 is available with a vehicle power option for operation with batteries and linear DC power supplies. See “Specifications” on page 26 voltage and
power requirements..
NOTICE
Due to the momentary startup inrush current of the instrument’s power supply,
the use of switching power supplies with the SC are not recommended.
The power-line fuses of AC-powered instruments are located within the instrument's power entry module on the rear panel. Use two 2A, 250V fast-blow fuses
(p/n 029-3026-00).
page 32 008-0608-00
4.5 Model SC3004
4.5.1 External Arrangement
Chassis Models4
4.5.2 Rear Panel
4.5.3 Panel Mounting
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
0123456789ABCDEFGHIJ
Figure 4-5: External Arrangement of Model SC3004
The pinout for the 25-pin System connector is provided later in this chapter. The
pinouts for the individual channels are located in the chapter for that channel.
The panel space necessary conforms to the EIA 19” rack-mount standard. Panel
mounting ears are attached to the instrument.
4.5.4 Bench Mounting
Panel mounting ears are attached to the instrument, and may be removed if they
are not needed.
SC Series Instruction Manual page 33
4.5.5 Case Removal
WARNING
Disconnect the power cord and all cables from the instrument before attempting to remove the case.
Failure to comply with these instructions could result in death or serious
injury.
CAUTION
Use a #0 Phillips screwdriver on the black screws to avoid damaging them.
Failure to comply with these instructions may result in product damage.
Step 1: Remove the four, silver rack-mounting ears from the left and right sides.
Step 2: Remove one Phillips screw from the top of the case.
Step 3: Remove two Phillips screws from the bottom of the black case cover.
Step 4: Remove the black case cover from the instrument.
Step 5: Remove eight Phillips screws from the rear panel, including the two cable
shield connection screws. NOTE: Do not remove the four screws which
secure the cooling fan to the rear panel.
Step 6: Remove the rear panel.
4.5.6 Rear Panel
4.5.7 Internal Arrangement
4.5.8 Cleaning
4.5.9 Fuse Replacement
The pinout for the 25-pin System connector is provided later in this chapter.
User installable printed circuit boards will slide out of the rear of the case once the
case and rear panel have been removed as described above.
Turn off the instrument and unplug all connectors. Use a soft cloth or tissue and a
mild cleaner. Do not use liquid or aerosol cleaners. Do not allow any cleaner
inside the instrument.
The power-line fuses are located within the instrument's power entry module on
the rear panel. Use two 2A, 250V fast-blow fuses (p/n 029-3026-00).
page 34 008-0608-00
5.1 Introduction
Chapter 5
System Connector
The 25-pin D-subminiature System connector is used for the following:
• Communication by RS-232 or RS-485. RS-232 DCE standard designations
have been maintained.
• Digital Function Inputs, such as for resetting tare, peak and latched limits
• Open-collector digital Limit Outputs for limits 1 through 4 (not available on
Model SC1000).
System Connector5
SC Series Instruction Manual page 35
5.2 System Connector Pinout
Table 5-2: System Connector
Pin Name Function Input/Output Reference Pin
1 N/C No Connection N/A
2 RS-232 IN RS-232 Data In Input 7
3 RS-232 OUT RS-232 Data Out Output 7
4 CTS RS-232 Clear to Send (connected to pin 5) N/A N/A
5 RTS RS-232 Request to Send (connected to pin 4) N/A N/A
6 DSR RS-232 Data Set Ready Output 7
7 GND RS-232/RS-485 reference Reference -
8 DCD RS-232 Data Carrier Detect (not connected) N/A N/A
9 FUNC 2 Function Input #2:.Clear Peak/Valley & Limits Input 19
10 FUNC 1 Function Input #1: Tare Off for all channels Input 19
11 FUNC 0 Function Input #0 Input 19
12 RS-485 TB RS-485 Transmit B Output 7
13 RS-485 TA RS-485 Transmit A Output 7
14 L1 Limit 1 Output (Open Collector) Output 19
15 L2 Limit 2 Output (Open Collector) Output 19
16 L3 Limit 3 Output (Open Collector) Output 19
17 L4 Limit 4 Output (Open Collector) Output 19
18 N/C No Connection N/A
19 DGND DGND (Digital Ground) Reference
20 DTR RS-232 Data Terminal Ready (not connected) N/A N/C
21 FUNC 3 Function Input #3: Tare On for all channels Input 19
22 RI RS-232 Ring Indicator (pulled up to 5V) Output
23 N/C No Connection N/A N/C
24 RS-485 RB RS-485 Receive B Input 7
25 RS-485 RA RS-485 Receive A input 7
The Limit Output pins and Function Input pins are electrically isolated from the rest of
the instrument.
The RS-232 and RS-485 communications pins are electrically isolated from the rest of
the instrument.
The RS-232 and RS-485 interfaces are exclusive; an instrument cannot have both.
page 36 008-0608-00
5.3 Function Input Pins
5.3.1 Overview
To use a Function Input pin (9, 10, 11 or 21), connect it to the DGND (pin 19) momentarily. This can be accomplished by a push button switch, relay contact closure, or
PLC output.
Usually, the Function Input pins perform the default actions described in the “System
Connector Pinout” on page 36. However, a SensoCode program running on a Mathematics Virtual Channel may replace these default actions. Consult the Customer
Information Sheet included with your instrument for details.
System Connector5
5.3.2 Example
For example, assume that you wish to use Function Input #3 to tare all channels in the
instrument simultaneously. Connect a push-button switch as shown below.
Figure 5-1: Function Input Example
SC Series Instruction Manual page 37
5.4 Limit Output Pins
5.4.1 Overview
5.4.2 Example
An open-collector output is a transistor logic output that can be used to control DC
loads, drive opto-isolators or relays, or interface directly to logic circuitry. They act very
much like switches: low resistance when turned on and high resistance when turned
off. You can use them as you would a dry relay contact, with the following restrictions:
• The voltage applied must be DC
• The polarity of the DC voltage must be observed
• Maximum voltage: 50VDC
• Maximum power: 2.0W
When Limits 1, 2, 3, or 4 are activated, the corresponding open-collector Limit Output
pin on the System connector will be connected to the DGND (Digital Ground) pin.
However, a SensoCode program running on a Mathematics Virtual Channel may override this behavior. Consult the Customer Information Sheet included with your instrument for details.
For example, assume that a remote indicator is to be lighted when Limit 1 is activated.
An external 24 VDC power supply connects to the indicator.
When Limit 1 is deactivated, there is high resistance between the Limit 1 Output pin
and the DGND (Digital Ground) pin; little current flows in the circuit and the light is off.
When Limit 1 is activated, there is low resistance between the Limit 1 Output pin and
the DGND (Digital Ground) pin; the light turns on.
The resistor limits the current flowing in the circuit when the light is lighted to 48 mA.
According to Ohm’s Law:
V
---
I
=
R
24V
=
------------500Ω
48mA
Lights or other indicators have voltage, current, and/or power ratings that must be
observed in order to avoid damaging them.
Figure 5-2: Open-Collector Output Example
page 38 008-0608-00
System Connector5
SC Series Instruction Manual page 39
page 40 008-0608-00
6.1 Overview
6.2 Menu Items
6.2.1
SOFTWARE REVISION
Menu Item
Chapter 6
System Menu
The System menu allows you to examine and change settings that affect the
chassis of the SC instrument. You can view the internal software revision and the
instrument’s configuration (i.e. what types of cards are installed in each channel).
Detailed instructions on operating the SC instrument in the SETUP Menu mode
can be found in “SETUP Menu mode” on page 23. A diagram of all menus is
located in the “Setup Menu Reference” on page 157.
This displays the software part number and revision that is resident in the Microprocessor Board of the SC instrument.
System Menu6
6.2.2
CONFIGURATION
Menu
6.2.3
DIAGNOSTICS
Menu
OUTPUT n, PIN nn
INPUT TEST
SCAN TIME
Menu Item
Menu Item
Sub-
Sub-
Menu Items
When selected, a sub-menu is displayed which lists all available channels in an
SC Series instrument. By pressing [ENTER] when a channel number is displayed, the card type installed in that channel is shown. If a card is not installed in
that channel, the message “
return to the sub-menu listing of all channels.
This sub-menu allows exercising and monitoring of the System connector’s output
and input pins.
These menus items are used to select an output pin to turn “on” (connected to pin
19) or “off” (disconnected from pin 19). The output pins are updated immediately.
When this item is selected, the status of all four digital inputs are continuously
scanned and displayed. A “0” means that an input is not connected to pin 19 (not
asserted), and a “1” means that it is connected (asserted). Press any button to
exit this operation.
When selected, this menu item displays the time, in seconds, that it last took for
the chassis to service all of the channels. In the RUN mode, the chassis reads
each channel’s track, peak and valley value sequentially. After each channel has
been serviced, the limits are processed.
The value displayed is obtained from the last execution of the RUN mode prior to
entering the SETUP menu mode. If you enter the SETUP mode immediately after
power up, the display will read “
NOT INSTALLED
NOT AVAILABLE
” is shown. Press [ENTER] again to
”.
SC Series Instruction Manual page 41
6.2.4
INSTALL CHANNEL
Menu Item
This menu item will add an Input, Output or Virtual channel as the next highest channel number in the system.
NOTICE
Installing a channel will cause it to use the “default” or “empty” configuration
information for that channel. All other channels are unaffected.
Any calibration data, SensoCode mathematics programs, display setup,
or other information for that channel will be erased to default values.
Input or Output Channel Installation Procedure
Before installing an Input or Output card, make certain that you know the “card type”
(a two-digit hexadecimal number) of the card you wish to install.
CAUTION
Use Electrostatic Discharge (ESD) precautions when unpacking and handling
circuit boards.
Failure to comply with these instructions may result in product damage.
Use the following procedure to install an Input or Output card:
1) When the instrument is in the RUN mode, use the [ENTER] button to change
which channel the display is monitoring. Note the highest channel number that is
presently installed. The new circuit card for the new channel will be installed as
the next channel number.
2) Examine the circuit card to be installed and orient it as shown below. On it you
will find the address jumper block.
page 42 008-0608-00
Figure 6-1: Address Jumper Block Location
3) Change both address jumpers to match the next available channel in the
instrument according to the chart below. Do not skip any channel numbers.
Figure 6-2: Address Jumper Settings
Input Channels, Output Channels and Virtual Channels (such as Mathematics
Channels and Split Display Channels) all require an unique address.
System Menu6
4) Turn the instrument off and remove the power cord from the power source.
5) Find the “Case Removal” in Chapter 4 “Chassis Models” on page 25 that
matches the particular chassis model. Follow the directions and remove the
rear panel.
6) Locate an unused 42-pin SensoBus connector on the SensoBus mother
board and make certain that all of its pins are not bent out of shape. It does
not matter into which slot you install the card as the addressing is implemented with the address jumpers. However, it is most convenient to match
the card’s address with the channel numbers silk-screened on the rear panel.
7) Install the card into an unused 42-pin SensoBus connector on the SensoBus mother board. Make certain the card is fully seated.
8) Replace the rear panel.
9) Re-connect the power cord to the power source. Turn the instrument on.
10) Enter the SETUP menu mode, then select “
SYSTEM MENU
->
INSTALL CHANNEL
”.
The instrument will then present a menu of card types available for installation.
11) Use the [UP] and [DOWN] buttons to select the card type of the card you
wish to install. After you select the card type to be installed, you are asked
“
ARE YOU SURE?
ton. If “YES” is selected, “
”. To cancel this operation, select “NO” or press the [EXIT] but-
WORKING...
” is displayed and the installation will com-
mence.
12) If the installation was successful, “
DONE
” will be displayed. If the installation
failed, you will see one of the following messages:
“
SYSTEM IS FULL
”: There are no unused channels available in the instrument.
Virtual Channel Installation Procedure
“
WON’T INSTALL
”: The Output Relay card type you selected to install does not
match the next available set of Limits. For example, the Limit 09-12 card type
will not install unless the Limit 05-08 card type has been installed.
“
ERROR 28 ON CH.xx
”: The instrument could not communicate with the card’s
EEPROM memory. This is usually caused by the address jumpers being set
incorrectly or if the card is not physically inside the chassis.
Use the following procedure to install a Virtual Channel:
1) Enter the SETUP menu mode, then select “
SYSTEM MENU
->
INSTALL CHANNEL
”.
The instrument will then present a menu of card types available for installation.
2) Select the card type of the card you wish to install. After you select the
card type to be installed, you are asked “
tion, select “NO” or press the [EXIT] button. If “YES” is selected, “
ARE YOU SURE?
”. To cancel this opera-
WORKING...
”
is displayed an the installation will commence.
3) If the installation was successful, “
DONE
” will be displayed. If the installation
failed, you will see one of the following messages:
“
CAN’T INSTALL
“
SYSTEM IS FULL
”: There is no more memory available for Virtual channels.
”: There are no unused channels available in the instrument.
After installing a Mathematics Virtual channel, you must re-load the SensoCode
program into the channel with a computer running the “SensoCom Instrument Utility Software”. See “Mathematics Virtual Channel” on page 143 for more information.
SC Series Instruction Manual page 43
6.2.5
DELETE CHANNEL
Menu Item
6.2.6
DEFAULT CHANNEL
Menu Item
This menu item will delete the last channel in the instrument. Before deletion occurs,
the number of the channel to be deleted is displayed and you are asked “
To cancel this operation, select “NO” or press the [EXIT] button. If “YES” is selected,
the last channel in the system will be deleted.
After a hardware channel has been deleted, you can safely physically remove it from
the chassis. See “Case Removal” on page 28 for SC1000 and SC2000 instruments.
See “Case Removal” on page 34 for SC3004 instruments.
NOTICE
Re-installing a deleted channel will erase all of its configuration information!
This menu item will reset all settings for the channel you select to their factory default
values. Before the channel settings are reset, you are asked “
this operation, press the [EXIT] button. If “YES” is selected, the channel’s settings will
be reset.
ARE YOU SURE?
NOTICE
Defaulting a channel is an operation that cannot be undone. All calibration
information and other settings will be erased.
ARE YOU SURE
”. To cancel
”.
page 44 008-0608-00
System Menu6
SC Series Instruction Manual page 45
page 46 008-0608-00
7.1 Overview
7.2 Wiring
Chapter 7
Serial Communications
The SC Series instruments are designed to communicate with a remote computer
system or terminal for the purpose of transferring data values from the instrument
to the remote system. The remote computer or terminal also can control many of
the functions performed by the instrument.
This chapter is a brief introduction to serial communications with SC Series instruments. A separate instruction manual is available to assist with the hookup and
wiring for data communications as well as provide detailed information of all the
available commands. Ask for manual 008-0610-00, “SC Series Communications
Guide” or download it from http://www.honeywell.com/sensotec.
The System connector on the instrument’s rear panel is used, among other things,
for serial communications. See “System Connector” on page 35 for wiring information.
Serial Communications7
All of the serial communications pins on the 25-pin System connector have 500V
of electrical isolation from all other pins and connectors on the instrument. Additionally, all serial communications pins are protected against electrostatic discharge (ESD).
SC Series Instruction Manual page 47
7.3 Communications Protocol
7.3.1 RS-232 vs. RS-485
7.3.2 Parameters
SC Series instruments are available with either of two communications protocols, RS232 or RS-485. Only one of these can be installed at a time at the factory.
• RS-232 provides for only one receiver and transmitter per loop, and a loop length
of no more than 50 feet.
• RS-485 allows up to 32 devices per loop, and a loop length of no more than 4000
feet. All devices receive messages in parallel on the line, the so-called “multidrop” system. To avoid garbled transmissions, only one device should respond to
a particular message. Therefore, every device on the loop must have a unique
address.
If you have an instrument with more than one channel, transmission must be
addressed to the appropriate channel within the instrument.
All SC instruments use no parity, 8 data bits, and 1 stop bits (“N,8,1”) for serial communications. Baud rates available are 300, 600, 1200, 2400, 4800, 9600, 19200
and 38400. As shipped from the factory, all instruments are set at 9600 baud. The
baud rate can be selected though the front panel.
page 48 008-0608-00
7.4 Serial Com Menu
7.4.1 Overview
7.4.2
INTERFACE
Item
7.4.3
ADDRESS
Item
7.4.4
BAUD RATE
Item
7.4.5
AUTO LINE-FEED
Menu Item
Menu
Menu
Menu
The Serial Com menu allows you to examine and change the settings for serial communications as well as test the communications link.
Detailed instructions on operating the SC instrument in the SETUP Menu mode can
be found in “SETUP Menu mode” on page 23. A diagram of all menus is located in
“Setup Menu Reference” on page 157.
This menu item indicates which serial communications interface is installed in the
instrument: “
This allows you to examine and change the two-character address that the instrument
will respond to. The default address of “00” (ASCII codes decimal 30, decimal 30).
This allows you to examine and change the baud rate that the instrument uses for
serial communications. The default baud rate is 9600.
This allows you to examine the setting (on/off) of the auto line-feed function. When
set to “on”, a line-feed character (ASCII code decimal 10) is transmitted just before the
carriage return (ASCII code decimal 13) that signifies the end of the instrument’s
response.
If the instrument is connected to a dumb terminal or printer, inserting a line feed before
the carriage return will make each message sent by the instrument appear on a separate line and thus be easier to read.
RS-232
” or “
RS-485
”.
Serial Communications7
7.4.6
TRANSMIT TEST
Menu Item
7.4.7
LEAVE MENU
Item
Menu
The default setting is “on”.
When this menu item is selected, the instrument immediately transmits the message
“
ADDRESS nn TEST
message “
lems with serial communications from the instrument to the computer or PLC.
When the menu item is displayed, press [ENTER] to leave this menu. Press [EXIT] to
return to the RUN mode.
” where “nn” is the two-character address of the instrument. Then the
MESSAGE SENT
” is shown on the display. This helps detect wiring or other prob-
SC Series Instruction Manual page 49
page 50 008-0608-00
8.1 Overview
The Display menu allows you to examine and change settings that affect the operation of the display of the SC instrument. You can change which channel is displayed when the instrument is powered-up and what information is shown on the
lower line of SC1000, SC2000 and SC2001 instruments.
Detailed instructions on operating the SC instrument in the SETUP Menu mode
can be found in “SETUP Menu mode” on page 23. A diagram of all menus is
located in the “Setup Menu Reference” on page 157.
8.2 Menu Items for Models SC1000, SC2000, SC2001
These instruments have a dual-line display which consists of an upper line and a
lower line.
8.2.1
UPPER CHANNEL
Item
Menu
Specifies the channel that is displayed on the upper line when the instrument is
powered-up.
To change whether the channel’s track, peak or valley data value is displayed on
power-up, use the channel’s “
OPERATION
->
POWER-ON SOURCE
Chapter 8
Display Menu
” menu item.
Display Menu8
8.2.2
LOWER CHANNEL
Item
8.2.3
LOWER MODE
Item
8.2.4
DISPLAY DISABLE
Menu Item
Menu
Menu
Specifies the channel that is displayed on the lower line when the “
menu item is set to “
To change whether the channel’s track, peak or valley data value is displayed on
power-up, use the channel’s “
Determines what is displayed on the lower line. The choices are:
•“
BLANK
•“
LIMIT 01-04
displayed as described in “Indicator Lights” on page 21
•“
CHANNEL
is displayed.
Determines if the display is enabled or not. In some applications, the display is
not used in order to reduce power consumption; the instrument is then completely
controlled with the Serial Communications interface. The choices are:
•“
OFF
” means that the display operates normally.
•“
ON
” means that the display is blanked after the instrument is powered up.
Pressing any button on the front panel will temporarily re-enable the display
until the instrument is reset.
8.3 Menu Items for Model SC3004
CHANNEL
” means that nothing is displayed.
” means that the status of Limit 1, Limit 2, Limit 3, and Limit 4 are
” means that the channel specified with the “
”.
OPERATION
->
POWER-ON SOURCE
” menu item.
LOWER CHANNEL
LOWER MODE
” menu item
”
8.3.1
POWER-ON CHANNEL
Menu Item
Specifies the channel that is selected when the instrument is powered up.
To change whether the channel’s track, peak or valley data value is displayed on
power-up, use the channel’s “
OPERATION
->
POWER-ON SOURCE
SC Series Instruction Manual page 51
” menu item.
page 52 008-0608-00
9.1 Understanding Limits, Set Points and Return Points
Limits are signal levels at which some action (such as a light to come on or go out,
or a switch to close) is desired to take place. The point at which this action takes
place is the SET POINT. The RETURN POINT is the point at which the action that
took place at the SET POINT returns to its original state.
If the SET POINT and RETURN POINT are identical and the signal level is
changing slowly near these points, “chatter” may result and the limit rapidly energizes and de-energizes. To keep this from happening, we can specify the SET
POINT at which the action would occur as well as the RETURN POINT where we
want the action to cease. If the amount of “dead band” between these two values
is more than the expected noise, the desired action will take place only once. The
SET POINT and the RETURN POINT should always be separated to insure that
small amounts of noise on the signal will not become a problem.
A good general rule for SET POINT and RETURN POINT values is that they
should be separated by at least one percent of the full-scale value.
Chapter 9
Limits
Limits9
SC Series Instruction Manual page 53
9.2 Limit Operation
9.2.1 Actions When Activated
When Limits 1, 2, 3, or 4 are activated, the following actions occur:
• The front panel light for the limit will illuminate.
• The corresponding open-collector Limit Output pin on the System connector will
be connected to the DGND (Digital Ground) pin.
• If a Relay Output channel is installed, the relay for the limit will activate.
A Relay Output channel can be installed for Limits 5, 6, 7, and 8. When these limits
are activated, the following actions occur:
• If the display is monitoring the channel of this Relay Output channel, the display
will indicate the status of these limits.
• On a Model SC3004, the front panel light for the limit will illuminate.
• The relay for the limit on this Relay Output channel will activate.
A Relay Output channel can be installed for Limits 9, 10, 11 and 12. When these limits
are activated, the following actions occur:
• If the Relay Output channel is displayed, the display will indicate the status of
these limits.
• The relay for the limit on this Relay Output channel will activate.
A Relay Output channel can be installed for Limits 13, 14, 15 and 16. When these limits are activated, the following actions occur:
• If the Relay Output channel is displayed, the display will indicate the status of
these limits.
• The relay for the limit on this Relay Output channel will activate.
9.2.2 Scan Time
The “scan time” or update rate of the limits depends on how many channels are
installed in the instrument. To determine the scan time of the limits for your particular
instrument, see “
SCAN TIME
Menu Item” on page 41.
page 54 008-0608-00
9.3 Limit Menus
9.3.1 Overview
9.3.2
LIMIT.ENABLE
Item
9.3.3
LIMIT.SETPOINT
Menu Item
9.3.4
LIMIT.RETURN PNT
Menu Item
Menu
Limits9
There are four, eight, twelve or sixteen Limit menus depending on how many
Relay Output channels are installed in the instrument. These menus determine
the operation of the each of the limits.
If no Relay Output channels are installed, there are four Limit menus which control
the operation of the open-collector Limit Outputs on the System connector.
Detailed instructions on operating the instrument in the SETUP Menu mode can
be found in “SETUP Menu mode” on page 23. A diagram of all menus is located
in “Setup Menu Reference” on page 157.
This enables or disables the operation of this limit. The two options for this menu
item are “
This is the numeric value in engineering units for the signal level that activates the
limit.
This is the numeric value at which the limit deactivates. In general, this number
should differ from the set point values by at least 1% of full scale.
Carefully consider what value should be entered for the RETURN POINT. If the
signal is expected to approach the SET POINT from a lower value, the RETURN
POINT value should be less (algebraically) than the SET POINT. If the signal is
expected to approach the SET POINT from a higher level, the RETURN POINT
should be higher (algebraically) than the SET POINT.
ON
” and “
OFF
”.
9.3.5
LIMIT.ENERGIZE
Menu Item
This specifies when to activate the limit relative to the set point and return point.
The options for this menu item are:
•“
SIGNAL > SETPOINT
the set point.
•“
SIGNAL < SETPOINT
the set point.
•“
SIGNAL INSIDE
set point and the return point.
•“
SIGNAL OUTSIDE
the set point and the return point.
The figures below further illustrate the differences between these settings.
” means the limit will activate when the signal is higher than
” means the limit will activate when the signal is lower than
” means the limit will activate when the signal is in between the
” means the limit will activate when the signal is not in between
SC Series Instruction Manual page 55
Figure 9-1: Limit Operation when
LIMIT.ENERGIZE
=
SIGNAL > SETPOINT
Figure 9-2: Limit Operation when
Figure 9-3: Limit Operation when
LIMIT.ENERGIZE
LIMIT.ENERGIZE
=
SIGNAL < SETPOINT
=
SIGNAL INSIDE
page 56 008-0608-00
Limits9
9.3.6
LIMIT.LATCHING
Menu Item
9.3.7
LIMIT.CHANNEL
Menu Item
9.3.8
LIMIT.SOURCE
Menu Item
Figure 9-4: Limit Operation when
This specifies whether to latch the activated limit so that only manually clearing the
limit will deactivate it. A latched limit can be manually cleared by pressing the
[CLEAR] button, sending the “F8” serial communications command, or by using the
Function Input #2 (Clear Peak/Valley & Limits pin on the System Connector. See
“Function Input Pins” on page 37.
The options for this menu item are:
•“
ON
” means that once a signal activates the limit, the limit will remain activated until
it is reset.
•“
OFF
” means that the limit will deactivate immediately when the signal crosses the
return point.
This specifies the channel that is monitored by this limit.
This designates the data source of the channel monitored by this limit. Each channel
has three data sources: the live tracking value (TRACK), its highest value (PEAK),
and its lowest value (VALLEY).
The options for this menu item are:
•“
TRACK
” means the live tracking value of the channel.
•“
PEAK
” means the highest value of the channel since the peak/valley detector was
last cleared.
•“
VALLEY
” means the lowest value of the channel since the peak/valley detector was
last cleared.
LIMIT.ENERGIZE
=
SIGNAL OUTSIDE
9.3.9
Item
LEAVE MENU
Menu
When the menu item is displayed, press [ENTER] to leave this menu. Press [EXIT] to
return to the RUN mode.
SC Series Instruction Manual page 57
page 58 008-0608-00
10.1 Features
Chapter 10
Strain-Gage Input Channel
The Strain-Gage Input channel provides a DC excitation voltage to and accepts
millivolt signals from strain-gage transducers. These millivolt signals are digitized,
converted into engineering units, and placed into the track, peak and valley data
values of the channel. Setup and calibration of the channel can be made manually through the SETUP mode or automatically if the transducers are equipped
with Signature Calibration. See “What is Signature Calibration?” on page 14.
The analog-to-digital converter input circuit is ratiometric to the excitation voltage,
features adjustable digital, low-pass filtering, 12- to 18-bit resolution (depending
on the filter setting) and has several different mV/V input ranges. These many
input ranges allow ±50,000 count resolution (at the slowest filter setting) across a
wide variety of mV/V input ranges.
Three methods of calibrating the Strain-Gage Input channel to the transducer are
available: known-load calibration, shunt calibration and mV/V calibration. The
benefits of each are discussed in “
CALIBRATION TYPE
Menu Item” on page 67.
Strain-Gage Input Channel10
FP2000 Transducers
Two rear panel control inputs can be field-configured for such functions as remote
tare, disabling peak/valley detection and clearing the peak/valley values. A voltage or current digital-to-analog output is also provided.
Many diagnostic functions are performed automatically to insure correct wiring
and operation of the transducer.
The Strain-Gage Input channel has its own internal shunt resistor for use in Shunt
Calibration. It is not compatible with FP2000 mV/V output transducers that are
equipped with “Buffered Shunt Calibration”. If you wish to use Shunt Calibration
with an FP2000 transducer, use an FP2000 with Buffered Shunt cal and amplified
output (e.g. 5 VDC, 10 VDC or 4-20mA) connected to an SC's High-Level Input
channel.
SC Series Instruction Manual page 59
10.2 Wiring
Connect the transducer to a Strain-Gage Input channel by wiring it to the 12-pin connector of that channel. The Customer Information Sheet that shipped with the instrument describes which cards are installed in each channel. The pin-out for this
connector is shown on the following table.
Table 4-3: Strain-Gage Input Channel Pin Connections
Pin Label Function Reference Pin
1 (top) +EXC (+)Excitation 10
2 +SEN (+)Sense 10
3-SEN (-)Sense 10
4 -EXC (-)Excitation 10
5 +SIG (+)Signal 10
6 -SIG (-)Signal 10
7 +OUT Analog Output 8
8 -OUT Analog Return -
9 +MEM (+)Signature 10
10 -MEM (-)Signature / Digital Ground -
11 AUX1 Auxiliary Function 1
(connect to pin 10 to activate)
12
(bottom)
AUX2 Auxiliary Function 2
(connect to pin 10 to activate)
10
10
The Analog Output and Analog Return pins are electrically isolated from all other pins
on the instrument.
The maximum recommended cable length to a Signature Module is 100 feet [30m].
NOTICE
If you are not using remote sensing of excitation, jumper (+)Sense to (+)Excitation and (-)Sense to (-)Excitation. If nothing is connected to (+)Sense and ()Sense, the instrument will enter the ERROR mode with error code 46.
page 60 008-0608-00
Figure 10-1: Unamplified Transducer Connection to Strain-Gage Input Channel
10.3 Calibration Procedure
If you are not familiar with operating the instrument in the SETUP menu mode,
see “SETUP Menu mode” on page 23. A listing of all menu items is given in
“Setup Menu Reference” on page 157.
Step 1: Wire the transducer to the channel’s connector.
Step 2: Enter the
Step 3: Enter the
Step 4: Perform the calibration.
See “Wiring” on page 60 for details.
CALIBRATION TYPE
.
There are three methods that can be used to calibrate the transducer to the
Input Channel. Each has advantages and disadvantages as described in
“
CALIBRATION TYPE
Menu Item” on page 67. It is important to know your
application in order to select the appropriate calibration type.
CALIBRATION DATA.
If your transducer has Signature Calibration, you don’t need to enter these
values as they are entered automatically.
If your transducer was ordered and shipped along with the instrument, you
don’t need to enter these values as they have been entered at the factory.
Otherwise, consult the Certificate of Calibration for the transducer when
entering information in the
Otherwise, use the
CALIBRATE
CALIBRATION DATA
sub-menu.
menu item to start the calibration process. You
will be prompted to apply loads to the transducer as required.
Strain-Gage Input Channel10
SC Series Instruction Manual page 61
10.4 Specifications
TRANSDUCER INPUT
Transducer type full-bridge, strain gage
Excitation Voltage 5 or 10 VDC,
Transducer full-scale output .5 to 11.0 mV/V @ 5V excitation
Amplifier Gain Selection automatic
Calibration Type shunt, mV/V or
Differential Input Voltage +/- 55mV (max.)
A/D Converter 24-bit Sigma-Delta
Low-pass filter digital, 24-tap FIR
Resolution and Frequency Response see “
INSTRUMENT-ONLY ACCURACY
(Sense wires used;Frequency Response setting<=16Hz;
Linearity, repeatability & hysteresis)
mV/V Calibration ±0.1% F.S.
Known -Load Calibration ±0.01% F.S.
short circuit protected with sensing
.5 to 5.5 mV/V @ 10 V excitation
2-, 3- or 5- point known load
FREQ. RESPONSE
Menu Item” on
page 63
AUXILLIARY INPUTS
Quantity 2
Type momentary contact closure
Response Time < 5ms
Field-Selectable Functions tare on, tare off,
ANALOG OUTPUT
Output voltage range 5, ±5, 10 or ±10 VDC (field selectable)
Output current range (optional current
output channels)
Source any channel’s track, peak or valley value
Isolation 500V
Resolution 13 bits
Frequency Response same as input when driven by the same
peak/valley clear, peak/valley hold,
track hold
4-20 mA
channel’s tracking data
page 62 008-0608-00
10.5 Channel Menu
Each Strain-Gage Input channel is configured and calibrated via its channel
Strain-Gage Input Channel10
menu. Detailed instructions on operating the instrument in the SETUP Menu
mode can be found in “SETUP Menu mode” on page 23. A diagram of all menus
is located in “Setup Menu Reference” on page 157.
10.5.1
OPERATION
Sub-Menu
AUTO-ZERO
FREQ. RESPONSE
Menu Item
Menu Item
This menu controls the operation of this channel when the instrument is in the
RUN mode.
This enables or disables the channel’s automatic zeroing function. The auto-zero
function can be beneficial by removing the effect of slight temperature shifts in the
transducer’s output. The two options for this menu item are “
ON
” and “
OFF
”.
When enabled, the channel will reset its tracking value to zero when the tracking
value has never been more positive than +10 or more negative than -10 display
counts for any 10 second period.
For example, assume that the
mal points). If the tracking value never leaves the range of
any 10 second period, then tracking value will reset to
DISPLAY.DECPT
menu item is set to
-000.10
000.00
automatically.
000.00
to
(two deci-
+000.10
for
NOTICE
To compensate for the transducer’s initial warm-up shift, the auto-zero function
operates every 2 seconds during the first 60 seconds of RUN mode operation.
This sets the frequency response, step response, and resolution of the channel
according to the table below. The tracking value, peak/valley detector values and
analog output on this channel are all affected. The default value of
suitable for most applications.
016. HERTZ
is
Frequency
Response
002. HERTZ/FAST
002. HERTZ
008. HERTZ
016. HERTZ
032. HERTZ
050. HERTZ
100. HERTZ
250. HERTZ
500. HERTZ
800. HERTZ
Step Response
(ms) (typical)
Resolution (counts) (not
including min. 10% overrange/
underrange capability)
40 ±50000
440 ±50000
110 ±25000
55 ±20000
28 ±10000
16 ±5000
8 ±5000
3 ±2000
2 ±2000
2 ±2000
SC Series Instruction Manual page 63
POWER-ON SOURCE
Menu Item
This menu selects which value is displayed by the channel when first entering the
RUN mode.
The choices are:
•“
TRACK
” means the live tracking value of the channel.
•“
PEAK
” means the highest value of the channel.
•“
VALLEY
” means the lowest value of the channel.
•“
TRACK / PEAK
” means the live tracking value and the highest value of the channel.
(Only available on Model SC3004).
•“
TRACK / VALLEY
” means the live tracking value and the lowest value of the channel.
(Only available on Model SC3004).
•“
PEAK / VALLEY
” means the highest and lowest values of the channel.
(Only available on Model SC3004).
page 64 008-0608-00
10.5.2
DISPLAY SETUP
Sub-Menu
DISPLAY. DIGITS
DISPLAY. DECPT
DISPLAY. COUNT-BY
Menu Item
Menu Item
Menu Item
This menu controls how data values are displayed by the channel and transmitted
via serial communications.
Strain-Gage Input Channel10
Selects the number of digits displayed by the channel. The choices are:
•“
5 DIGIT-BIPOLAR
” displays both positive and negative numbers with five full dig-
its (±99999).
•“
6 DIGIT-UNIPLOAR
” displays positive numbers with six full digits (999999) and
negative numbers with five full digits (-99999).
•“
7 DIGIT UNIPOLAR”
displays positive number with seven full digits (9999999)
and negative numbers with six digits (-999999).
This menu item may be automatically updated by a transducer’s Signature Mod-
ule.
Selects the decimal point location on the channel’s display and serial communications output. Use the [UP] and [DOWN] buttons to move the decimal point to the
right and left.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule.
Determines by what value the display increments or decrements. This will make
the display less sensitive to a noisy signal. The choices are:
•“
00001
”
•“
00002
”
•“
00005
”
•“
00010
”
•“
00020
”
•“
00050
”
•“
00100
”
•“
00200
”
This menu item may be automatically updated by a transducer’s Signature Mod-
ule.
DISPLAY. UNITS
DISPLAY. AVERAGE
Menu Item
Menu Item
Specifies the four character label that is displayed to the right of the channel’s values.
NOTICE
This menu item doesn’t change the mathematical scaling of the channel’s values; that can be changed by altering the “
menu item and then performing a re-calibration.
When a character position is flashing press the [UP] or [DOWN] button to change
the character. Press [ENTER] to advance to the next character.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule.
Controls the speed with which the channel’s display values will update. Display
averaging does not affect the channel’s analog output or its peak/valley detection,
which will proceed at the speed selected by the ”
item. The choices are:
•“
ON
” means that the display will update four times each second. The channel’s
values will be averaged for 1/4 second, then displayed.
•“
OFF
” means that the channel’s display will update as quickly as possible.
CALIBRATION DATA
OPERATION
->
->
FREQ. RESPONSE
FULL SCALE VALUE
”
” menu
SC Series Instruction Manual page 65
10.5.3
AUXn FUNCTION
Menu Items
The
AUX1 FUNCTION
and
AUX2 FUNCTION
menu items determine what happens when the
Auxiliary Function pins (labeled as “AUX1” and “AUX2”) on the channel’s connector
are activated. These pins are “activated” when they are connected to the (-)Signature
(labeled as “-MEM”) pin. The choices are:
•“
DISABLED
•“
TRACK HOLD
•“
HIGH/LOW HOLD
•“
HIGH/LOW CLEAR
•“
TARE ON
•“
TARE OFF
” means that activating the pin does nothing.
” means that the tracking, peak and valley values will not be updated.
” means that the peak and valley values will not be updated.
” means that the peak and valley values are reset.
” activates the channel’s Tare function (resets it to zero).
” deactivates the channel’s Tare function.
As the Auxiliary Function pins are not isolated, it is recommended that a push-button
switch or relay is used to connect these pins to the (-)Signature pin.
page 66 008-0608-00
10.5.4
CALIBRATION TYPE
Menu Item
This chooses the type of calibration technique to be used. There are three methods that can be used to calibrate the transducer to the Input Channel. Each has
advantages and disadvantages as described in the table below.
Table 4-4: Comparison of Calibration Types
Shunt
Calibration
RECOMMENDED...
...for most applications no yes no
...when frequently swapping
transducers
...when best possible accuracy
required
PROS and CONS
Relative accuracy good better best
Requires actual, calibrated loads
to be applied
Automatically calibrates with Sig-
nature Calibration transducers
Max. distance of transducer from
instrument w/out sense wires
Max. distance of transducer from
instrument with sense wires
yes yes no
no no yes
no no yes
yes yes no
15’ [5m] 50’ [15m] 300’ [100m]
15’ [5m] 100’ [30m] 300’ [100m]
mV/V
Calibration
Strain-Gage Input Channel10
2-, 3-, or 5-
point
Known Load
Calibration
CALIBRATION TECHNIQUE
Zero-scale point from... applied load applied load applied load
Full-scale point from... transducer
output when
shunt resistor
applied
Linearity correction from... data stored in
Signature
Module (if
available)
It is important to know your application in order to select the appropriate calibration type. mV/V (“millivolt-per-volt”) Calibration is recommended for most
applications because it doesn’t require known loads and it allows easy swapping
of transducers equipped with Signature Calibration. When the best possible
accuracy is required, Known-Load Calibration is recommended.
The choices for this menu item are:
•“
TYPE= SHUNT CAL
the load entered in the “
” means Shunt Calibration. First, you are prompted to apply
ZERO SCALE VALUE
” register. Next, the instrument inserts
SC Series Instruction Manual page 67
internal refer-
ence
data stored in
Signature
Module (if
available)
applied load
2-point: none
3- or 5-point:
applied load
a known, precision resistor into the transducer circuit, which causes a predictable
apparent signal. The instrument then takes a reading and adjusts itself using the
“
SHUNT CAL VALUE
•“
TYPE= MV/V CAL
apply the load entered in the “
” register.
” means Millivolt-per-Volt Calibration. First, you are prompted to
ZERO SCALE VALUE
” register. Next, the instrument takes
a reading from an accurate, internal mV/V reference. The instrument then uses
the “
FULL SCALE MV/V
” and “
FULL SCALE VALUE
” values in mathematical calculations to
scale its tracking values.
•“
TYPE= 2 POINT CAL
apply the loads to the transducer that were entered in the “
“
KNOWN POINT 2/2
” means 2-Point Known Load Calibration. You are prompted to
KNOWN POINT 1/2
” registers. This technique assumes that the transducer is linear,
so the usual loads used are zero scale and full scale.
•“
TYPE= 3 POINT CAL
apply the loads to the transducer that were entered in the “
“
KNOWN POINT 2/3
” means 3-Point Known Load Calibration. You are prompted to
KNOWN POINT 1/3
” and “
KNOWN POINT 3/3
” registers. This technique can be used to
compensate for the non-linearity in the transducer. The usual loads used are zero
scale, half scale and full scale, but you are not restricted to these loads.
•“
TYPE= 5 POINT CAL
apply the loads to the transducer that were entered in the “
POINT 2/5
”, “
” means 5-Point Known Load Calibration. You are prompted to
KNOWN POINT 1/5
KNOWN POINT 3/5
”, “
KNOWN POINT 4/5
” and “
KNOWN POINT 5/5
” registers. This
technique can be used to compensate for the non-linearity in the transducer. The
usual loads used are zero scale, one-quarter scale, half scale, three-quarters
scale and full scale, but you are not restricted to these loads.
The selection of the calibration type affects what menu items appear in the
sub-menu.
DATA
CALIBRATION
” and
” and
”, “
KNOWN
page 68 008-0608-00
10.5.5
CALIBRATION DATA
Sub-Menu
EXCITATION
FULL SCALE MV/V
FULL SCALE VALUE
ZERO SCALE VALUE
Menu Item
Menu Item
Menu Item
Menu Item
This enters the values that will be used by the instrument when it calibrates itself
to the transducer. The menu items that are displayed will change according to
what the
CALIBRATION TYPE
is set for.
This sets the excitation voltage used to power up the transducer. The choice are:
•“
EXCITATION=5VDC
•“
EXCITATION=10VDC
” means 5 volts DC excitation.
” means 10 volts DC excitation.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule.
The transducer output when its full-scale load is applied to it, in milliVolts-per-Volt.
This menu item is used by the instrument to set the gain of its amplifier circuit, and
(when the
CALIBRATION TYPE
is set to mV/V Calibration) to calibrate the instrument.
This value is normally found on the transducer’s Certificate of Calibration issued
by its manufacturer.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule. It is available for all calibration types.
The transducer’s full-scale output in engineering units.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule. It is available only with the Shunt Calibration and mV/V Calibration types.
The transducer’s zero-scale output in engineering units, which is usually zero.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule. It is available only with the Shunt Calibration and mV/V Calibration types.
Strain-Gage Input Channel10
SHUNT CAL VALUE
Menu Item
The shunt calibration value must be calculated by using information found on the
transducer’s Certificate of Calibration and the following formula:
Shunt-Calibration Output
SHUNT CAL VALUE
-------------------------------------------------------------
Full-Scale Output
Full-Scale Capacity×=
The terms have the following meanings:
• Shunt-Calibration Output: The transducer’s output under shunt calibration
conditions in mV/V. Sometimes called “Shunt Cal. Factor”.
• Full-Scale Output: The transducer’s full-scale output in mV/V. Sometimes
called “Calibration Factor”.
• Full-Scale Capacity: The transducer’s desired full-scale reading in engineer-
ing units (PSI, lbs, Kg, etc.). You may wish to convert the engineering units of
this value. For example, if the transducer full scale is 3000PSIG and you wish
the channel to read in bar, you must convert 3000PSIG into 206.84 bar.
This menu item may be automatically updated by a transducer’s Signature Mod-
ule.
The shunt resistor’s ohmic value used to generate the Shunt-Calibration Output is
given on the transducer’s Certificate of Calibration. Normally, the instrument has
a shunt calibration resistor of 59000 (59K) ohms installed. If your transducer and
instrument were purchased at the same time from Sensotec, the correct shunt
resistor has been installed.
This menu item is only available with the Shunt Calibration type.
SC Series Instruction Manual page 69
Figure 10-2: Shunt Calibration Resistor Location
To verify proper transducer operation, you can apply the shunt resistor to the transducer while the instrument is in the RUN mode. Press and hold the [ENTER] button
for three seconds; this will apply the shunt resistor and display the reading.
KNOWN POINT x/y
Menu Items
This enters the engineering units for the known-load calibration points. These points
must match the actual loads that you will apply to the instrument during calibration.
The number of calibrations points depends on the
CALIBRATION TYPE
.
When using the 2-Point Known Load Calibration type, the following menu items are
available:
•“
KNOWN POINT 1/2
•“
KNOWN POINT 2/2”
”: point 1 of 2, usually 0% of the transducer’s full-scale capacity.
: point 2 of 2, usually 100% of the transducer’s full-scale capacity.
When using the 3-Point Known Load Calibration type, the following menu items are
available:
•“
KNOWN POINT 1/3
•“
KNOWN POINT 2/3
•“
KNOWN POINT 3/3
”: point 1 of 3, usually 0% of the transducer’s full-scale capacity.
”: point 2 of 3, usually 50% of the transducer’s full-scale capacity.
”: point 3 of 3, usually 100% of the transducer’s full-scale capacity.
When using the 5-Point Known Load Calibration type, the following menu items are
available:
•“
KNOWN POINT 1/5
•“
KNOWN POINT 2/5
•“
KNOWN POINT 3/5
•“
KNOWN POINT 4/5
•“
KNOWN POINT 5/5
”: point 1 of 5, usually 0% of the transducer’s full-scale capacity.
”: point 2 of 5, usually 25% of the transducer’s full-scale capacity.
”: point 3 of 5, usually 50% of the transducer’s full-scale capacity.
”: point 4 of 5, usually 75% of the transducer’s full-scale capacity.
”: point 5 of 5, usually 100% of the transducer’s full-scale capacity.
page 70 008-0608-00
NOTICE
To insure both correct operation of the transducer and application of the load,
the instrument expects the voltage applied at each known-load point to be
increasing. For example, the load applied at Known-Load Point 2/2 must
cause the transducer to produce a more positive voltage than at Known-Load
Point 1/2.
These menu items are only available with the Known-Load Calibration types.
10.5.6
Item
CALIBRATE
Menu
This menu item performs a calibration according to what was entered in the
BRATION TYPE
CALIBRATION DATA
menu items.
and
NOTICE
Before performing a calibration, the transducer must be connected to the
instrument, the
Menu Item” on page 67), and the
BRATION DATA
CALIBRATION TYPE
must be selected (see “
CALIBRATION DATA
Sub-Menu” on page 69).
CALIBRATION TYPE
must be entered (see “
CALI-
NOTICE
For maximum accuracy, allow at least twenty minutes of warm-up with the excitation voltage applied to the transducer before calibration.
If the
CALIBRATION TYPE
• The display will read
00000 and UNIT are previously entered as
S. When you have applied this load to the transducer, press [ENTER].
UNIT
• The display will then read
pletion, the display will indicate
mode.
is Shunt Calibration...
DOING SHUNT CAL
WORKING
, and prompt you to
and calibration will take place. Upon com-
DONE
and the instrument will return to the RUN
APPLY 00000 UNIT
ZERO SCALE VALUE
and
(where
DISPLAY.
CALI-
Strain-Gage Input Channel10
If the
CALIBRATION TYPE
• The display will read
is mV/V Calibration...
DOING MV/V CAL
, and prompt you to
00000 and UNIT are previously entered as
). When you have applied this load to the transducer, press [ENTER].
UNITS
• The display will then read
pletion, the display will indicate
WORKING
and calibration will take place. Upon com-
DONE
and the instrument will return to the RUN
mode.
CALIBRATION TYPE
If the
• The display will read
is 2-Point Known Load Calibration...
DOING 2POINT CAL
, and prompt you to
(where 00000 and UNIT are previously entered as
). When you have applied this load to the transducer, press [ENTER].
UNITS
• The display will read
previously entered as
WORKING
, then
APPLY 01000 UNIT
KNOWN POINT 2/2
and
applied this load to the transducer, press [ENTER].
• Upon completion, the display will indicate
DONE
the RUN mode.
If the
CALIBRATION TYPE
• The display will read
is 3-Point Known Load Calibration...
DOING 3POINT CAL
, and prompt you to
(where 00000 and UNIT are previously entered as
). When you have applied this load to the transducer, press [ENTER].
UNITS
• The display will read
previously entered as
WORKING
, then
APPLY 00500 UNIT
KNOWN POINT 2/3
and
applied this load to the transducer, press [ENTER].
• The display will read
previously entered as
WORKING
, then
APPLY 01000 UNIT
KNOWN POINT 3/3
and
APPLY 00000 UNIT
ZERO SCALE VALUE
KNOWN POINT 1/2
and
DISPLAY.
APPLY 00000 UNIT
and
(where 01000 and UNIT are
DISPLAY. UNITS
). When you have
and the instrument will return to
APPLY 00000 UNIT
KNOWN POINT 1/3
and
(where 00500 and UNIT are
DISPLAY. UNITS
). When you have
(where 01000 and UNIT are
DISPLAY. UNITS
). When you have
(where
DISPLAY.
DISPLAY.
SC Series Instruction Manual page 71
applied this load to the transducer, press [ENTER].
• Upon completion, the display will indicate
RUN mode.
If the
CALIBRATION TYPE
is 5-Point Known Load Calibration...
DONE
and the instrument will return to the
• The display will read
00000 and UNIT are previously entered as
DOING 5POINT CAL
, and prompt you to
APPLY 00000 UNIT
KNOWN POINT 1/5
and
DISPLAY. UNITS
When you have applied this load to the transducer, press [ENTER].
• The display will read
viously entered as
WORKING
, then
KNOWN POINT 2/5
APPLY 00250 UNIT
and
DISPLAY. UNITS
(where 00250 and UNIT are pre-
). When you have applied this
load to the transducer, press [ENTER].
• The display will read
viously entered as
WORKING
, then
KNOWN POINT 3/5
APPLY 00500 UNIT
and
DISPLAY. UNITS
(where 00500 and UNIT are pre-
). When you have applied this
load to the transducer, press [ENTER].
• The display will read
viously entered as
WORKING
, then
KNOWN POINT 4/5
APPLY 00750 UNIT
and
DISPLAY. UNITS
(where 00750 and UNIT are pre-
). When you have applied this
load to the transducer, press [ENTER].
• The display will read
viously entered as
WORKING
, then
KNOWN POINT 5/5
APPLY 01000 UNIT
and
DISPLAY. UNITS
(where 01000 and UNIT are pre-
). When you have applied this
load to the transducer, press [ENTER].
• The display will now read
indicate
DONE
and the instrument will return to the RUN mode. If you use the [UP]
button and [ENTER] to select
RETURN PNTS.=NO
RETURN POINTS=YES
. If you press [ENTER], the display will
, you may now apply the same
loads again but in reverse order. This will allow the instrument to measure and
partially eliminate any hysteresis that may be present in the transducer. After the
loads have been applied again, the display will indicate
DONE
and the instrument
will return to the RUN mode.
(where
).
page 72 008-0608-00
10.5.7
DAC. CHANNEL
DAC. SOURCE
DAC SETUP
Sub-Menu
Menu Item
Menu Item
This sub-menu contains four items that control the Digital-to-Analog Converter
(DAC) output of the channel.
This chooses which channel will drive the DAC output. Normally, the DAC located
on a particular channel will be driven by that channel, but that need not be the
case. For example, if several channels were assigned to load cells on a weighing
platform, the sum of all channels could (mathematically) drive one channel’s DAC
output.
If the DAC is set-up to be driven by its own channel’s tracking value, the Analog
Output will have the frequency response specified by the channel’s
FREQ. RESPONSE
menu item. Otherwise, the Analog Output will operate more slowly.
This designates the data source of the channel monitored by the analog output.
The options for this menu item are:
•“
TRACK
” means the live tracking value of the channel.
•“
PEAK
” means the highest value of the channel since the peak/valley detector
was last cleared.
•“
VALLEY
” means the lowest value of the channel since the peak/valley detector
was last cleared.
If the DAC is set-up to be driven by its own channel’s tracking value, the Analog
Output will have the frequency response specified by the channel’s
FREQ. RESPONSE
menu item. Otherwise, the Analog Output will operate more slowly.
Strain-Gage Input Channel10
DAC. ZERO-SCALE
DAC. FULL-SCALE
Menu Item
Menu Item
This specifies what value, in engineering units, corresponds to zero output on the
Analog Output.
“Zero output” might be 0 Volts, 2.5 Volts, 5 Volts, 4 mA or 12 mA depending on if
the channel has a voltage or current output and how it is configured. See “Analog
Output Configuration” on page 76 the for details.
If the
UPDATE DAC SETUP
menu item is set to “ON” and the
DAC. CHANNEL
menu item is
set to this channel, this menu item may be automatically updated by a transducer’s Signature Module. If the
UPDATE DAC SETUP
menu item is “OFF”, a trans-
ducer’s Signature Module will not change this menu item.
Specifies what value, in engineering units, corresponds to full output on the Analog Output.
“Full output” might be 5 Volts, 10 Volts or 20 mA depending on if the channel has
a voltage or current output and how it is configured. See “Analog Output Configuration” on page 76 for details.
If the
UPDATE DAC SETUP
menu item is set to “ON” and the
DAC. CHANNEL
menu item is
set to this channel, this menu item may be automatically updated by a transducer’s Signature Module. If the
UPDATE DAC SETUP
menu item is “OFF”, a trans-
ducer’s Signature Module will not change this menu item.
SC Series Instruction Manual page 73
10.5.8
MODULE
SIGNATURE
Sub-Menu
UPDATE SIG.MOD?
DEFAULT SIG.MOD?
Menu Item
Menu Item
Updates the information stored in the transducer’s Signature Module with any new
settings that is entered into the instrument with the SETUP menus. The settings that
will be updated are:
•
EXCITATION
•
FULL SCALE MV/V
•
FULL SCALE VALUE
•
SHUNT CAL VALUE
•
DISPLAY. UNITS
Note that changes made to the instruments display setup (such as decimal point and
count-by settings) are not updated into the Signature Module.
Updating enters these new settings from the instrument into the Signature Module. If
you do not update the Signature Module, connect a different transducer to the instru-
ment and then re-connect the original transducer again, the instrument will revert to
the settings that are stored inside the Signature Module.
The options for this menu item are:
•“
NO
” will not update the Signature Module.
•“
YES
” will display
WORKING
, update the Signature Module, then display
DONE
.
This menu item will overwrite any user settings in the Signature Module with the original default settings. The Signature Module always maintains a copy of the original
default settings that were created at the factory.
The options for this menu item are:
•“
NO
” will not restore original default settings.
•“
YES
” will display
tings, then display
WORKING
, update the Signature Module, with the original factory set-
DONE
.
UPDATE DAC SETUP
Menu Item
This menu item determines whether or not the
DAC. FULL SCALE
and
DAC. ZERO SCALE
Analog Output settings are overwritten with information from a Signature Module when a
new transducer is detected by the instrument.
The options for this menu item are:
•“
YES
” will allow a newly detected Signature Module to update the Analog Output
settings.
•“
NO
” will not allow automatic updating of the Analog Output settings.
page 74 008-0608-00
10.5.9
DIAGNOSTICS
Sub-Menu
DAC FULL SCALE
DAC ZERO SCALE
VERSION INFO
DISPLAY ADC
Menu Item
Menu Item
Menu Item
Menu Item
When this menu item is selected, the Analog Output of the channel is forced to its
full-scale output, then
DAC UPDATED
is displayed. This is useful when calibrating or
trimming the readout connected to the Analog Output.
When this menu item is selected, the Analog Output of the channel is forced to its
zero-scale output, then
DAC UPDATED
is displayed. This is useful when calibrating or
trimming the readout connected to the Analog Output.
This menu item displays the part number and revision level of the firmware used
by this channels microprocessor.
The options for this menu item are:
•“
OFF
” will allow the [VALUE] button to cycle through “TK” (tracking value), “HI”
(peak value) and “
•“
ON
” will allow the “AD” (percentage of the Analog-to-Digital converter’s fullscale digitizing capability) display source to be available along with “
ing value), “
LO
” (valley value). This is the recommended option.
TK
” (track-
HI
” (peak value) and “LO” (valley value) when the [VALUE] button
is pressed on the front panel.
The Analog-to-Digital converter counts are displayed as a percentage from
-100.00% to 100.00%.
Strain-Gage Input Channel10
LINEARIZATION
DISABLE CHANNEL
Menu Item
Menu Item
This can be used to verify that the transducer’s output does not exceed the input
range of the instrument. If the Analog-to-Digital converter readings display more
than +/-10% when there is no load on the transducer, the transducer has a high
zero offset.
The options for this menu item are:
•“
ON
” will allow linearization data obtained from either the Signature Module or a
3-Point or 5-Point Known Load Calibration to affect a channel’s scaled values.
This is the recommended option.
•“
OFF
” will not allow linearization data to effect the channel’s scaled values.
This is useful when diagnosing problems in a calibration procedure.
The options for this menu item are:
•“
ON
” will bypass the INITIALIZE and RUN modes of the channel. The track,
peak and valley values of the channel are forced to 0. This option is helpful
when a channel is installed but not being used. ERROR 46, which will normally occur when the (+)Sense and (-)Sense wires are not connected properly, will be surpressed.
•“
OFF
” will allow normal operation of the channel.
SC Series Instruction Manual page 75
10.6 Analog Output Configuration
10.6.1 Identifying the Output Type
10.6.2 Channel Menu Items
10.6.3 Output Selection
A Strain-Gage Input channel is available with one of two types of digital-to-analog
(DAC) outputs: voltage or current. You can determine which type of output a
channel has by one of three ways:
• Consulting the instrument’s Customer Information Sheet
• Examining the
nn is the number of the channel. If the channel’s type is
voltage output. If the channel’s type is
SYSTEM MENU
->
CONFIGURATION
->
STRAIN GAGE I
CHANNEL
nn
TYPE
menu item where
STRAIN GAGE V
, it has a current output.
, it has a
• Examining the channel’s circuit board as shown in the figure below.
The Analog Output can be driven by any channel’s track, peak or valley value.
See the “Channel Menu” section earlier in this chapter for a complete listing of
SETUP menu items available on the
DAC. SETUP
sub-menu.
Jumpers located on the channel’s circuit board determine what outputs are generated when the value selected to drive the Analog Output (from the
DAC. SOURCE
menu items) equals the
DAC. FULL SCALE
and
DAC. ZERO SCALE
DAC. CHANNEL
and
settings.
page 76 008-0608-00
Figure 10-3: Digital-to-Analog Output Jumper Locations
DAC. ZERO SCALE
Output
DAC. FULL SCALE
Output
J30
jumper
J31
jumper
CHANNELS WITH VOLTAGE OUPUT
0-5V 2.5 Volts 5 Volts open closed
±5V 0 Volts 5 Volts open open
0-10V 5 Volts 10 Volts closed closed
±10V 0 Volts 10 Volts closed open
CHANNELS WITH CURRENT OUTPUT
4-20mA 4 mA 20 mA open open
4-20mA 12 mA 20 mA open closed
10.7 Troubleshooting
10.7.1 Error Messages
10.7.2 Common Problems and Solutions
Strain-Gage Input Channel10
See “Error Messages” on page 151 for information relating to error messages.
Erratic Display
+OVLD or -OVLD on Display
Analog Output Incorrect
Check electrical connections for continuity and the transducer’s wiring code from
its Certificate of Calibration.
Make sure that the load on the transducer is constant.
Check millivolt input to the (+)Signal (“+SIG”) and (-)Signal (“-SIG”) pins with a
voltmeter.
Indicates that the voltage across the (+)Signal (“+SIG”) and (-)Signal (“-SIG”) pins
is overranging or underranging the amplifier circuit. Make certain all wires are
connected properly.
If you remove all load from the transducer and you still see this message, the
(+)Excitation (“+EXC”) or (-)Excitation (“-EXC”) pins may be shorted to the (+)Signal (“+SIG”) or (-)Signal (“-SIG”) pins.
If you remove all load from the transducer and you get a numeric reading, the
transducer may have a high zero offset. Use the channel’s SETUP menu and set
DIAGNOSTICS
->
DISPLAY ADC
to “ON”; in the RUN mode this will allow the [VALUE] button to display raw A/D readings as a percentage of its full-scale. If the raw A/D
readings display more than +/-10% when there is no load on the transducer, the
transducer has a high zero offset.
Make certain of the type of Analog Output (voltage or current) that the channel is
equipped with; see “Identifying the Output Type” on page 76.
Use the
DIAGNOSTICS
->
DAC FULL SCALE
and
DIAGNOSTICS
->
DAC ZERO SCALE
menu items to
force the Analog Output to a known output. Then, adjust your readout device,
panel meter, PLC or data acquisition system to match.
Check the output selection jumpers; see “Output Selection” on page 76.
“
APPLY 00000
” on Power-up
Auxiliary Function Pins Not Operating
The channel has detected that the transducer connected to the instrument is different than the one the channel was last calibrated with. Because the
is set to either Shunt Calibration or mV/V Calibration, the instrument is
TYPE
CALIBRATION
prompting you to apply zero load in order to auto-calibrate to this new transducer.
Do one of the following, depending on the situation:
• Re-connect the original transducer to the channel and re-start the instrument.
• Press [ENTER] to re-calibrate the channel to this new transducer using Shunt
or mV/V Calibration and accept the presently applied load as “0”. (In situations where one can’t apply “0” load to an absolute pressure transducer or a
load cell with a pre-load, you can change the
menu item from “0” to a load that can be applied. For example, 14.7
VALUE
CALIBRATION DATA
->
ZERO-SCALE
PSIA or the known pre-load on the load cell.
•Use the
CALIBRATE
menu item to perform a Known-Load Calibration with this
new transducer.
Make sure that the
rectly; if they are set to
AUX1 FUNCTION
DISABLED
or
then they will not operate.
AUX2 FUNCTION
SETUP menu items are set cor-
The Auxiliary Function (“AUX1” and “AUX2”) pins must be connected to pin 10,
SC Series Instruction Manual page 77
not pin 8, to activate them.
Sensitivity to EMI/RFI
Shunt Calibration Feature not Operating
To obtain maximum immunity to electromagnetic or radio frequency interference,
make certain that the shields of the transducer cables are connected to the “cable
shield connection screw” on the rear panel of the instrument. See “Unamplified
Transducer Connection to Strain-Gage Input Channel” on page 60, “External
Arrangement of AC powered SC1000 and SC2000” on page 27 and “External
Arrangement of Model SC3004” on page 33.
To activate the channel’s shunt calibration function while the instrument is in RUN
Mode, see “Shunt Calibration Check” on page 21. This serves as a quick check of
the shunt cal feature.
page 78 008-0608-00
11.1 Features
Chapter 11
AC/AC-LVDT Input Channel
The AC/AC-LVDT Input channel provides an AC excitation voltage to and accepts
AC signals from LVDT (Linear Variable Differential Transformer) transducers.
These signals are digitized, converted into engineering units, and placed into the
track, peak and valley data values of the channel. Setup and calibration of the
channel are made manually through the SETUP mode.
The analog-to-digital converter features adjustable digital, low-pass filtering, 12- to
18-bit resolution (depending on the filter setting) and has several different input
ranges. These many input ranges allow ±25,000 count resolution (at the slowest
filter setting) for a wide variety of LVDT outputs.
The AC/AC-LVDT Input channel is calibrated to the transducer by using knowndisplacement calibration.
Two rear panel control inputs can be field-configured for such functions as remote
tare, disabling peak/valley detection and clearing the peak/valley values. A standard voltage or optional current digital-to-analog output is also provided.
AC/AC-LVDT Input Channel11
NOTICE
To use a DC/DC LVDT with an SC instrument, use a High-Level Input channel
instead of an AC/AC-LVDT Input channel.
SC Series Instruction Manual page 79
11.2 Wiring
Connect your transducer to an AC/AC-LVDT Input channel by wiring it to the 12-pin
connector of that channel. The Customer Information Sheet that shipped with the
instrument describes which cards are installed in each channel. The pin-out for this
connector is shown on the following table.
Table 5-5: AC/AC-LVDT Input Channel Pin Connections
Pin Label Function Reference Pin
1 (top) +EXC (+)Excitation 10
2 N/C No connection
3 N/C No connection
4 -EXC (-)Excitation 10
5 +SIG (+)Signal 10
6 -SIG (-)Signal 10
7 +OUT Analog Output 8
8 -OUT Analog Return -
9 N/C No connection
10 DGND Digital Ground -
11 AUX1 Auxiliary Function 1
(connect to pin 10 to activate)
12
(bottom)
AUX2 Auxiliary Function 2
(connect to pin 10 to activate)
10
10
The Analog Output and Analog Return pins are electrically isolated from all other pins
on the instrument.
Figure 11-1: Connection of Four- or Five-wire AC/AC-LVDT
page 80 008-0608-00
11.3 Calibration Procedure
If you are not familiar with operating the instrument in the SETUP menu mode,
see “SETUP Menu mode” on page 23. A listing of all menu items is given in
“Setup Menu Reference” on page 157.
Step 1: Wire the transducer to the channel’s connector.
Step 2: Enter the
Step 3: Enter the
Step 4: Determine the LVDT’s electrical null point, then physically mount it.
Step 5: Perform the calibration.
See “Wiring” on page 80 for details.
CALIBRATION TYPE
.
You must have the capability to apply either two, three, or five known displacements to the transducer. The
CALIBRATION TYPE
menu item allows you to
specify how many known displacements will be applied during calibration.
CALIBRATION DATA.
Consult the Certificate of Calibration for the transducer when entering information in the
CALIBRATION DATA
sub-menu.
The electrical null is the armature position that produces the least electrical
output. Once this point has been determined, the transducer is physically
clamped into position. See “Electrical Null and Transducer Mounting” on
page 93.
Using the
CALIBRATE
menu item starts the calibration process. You will be
prompted to apply displacements to the transducer as required.
AC/AC-LVDT Input Channel11
SC Series Instruction Manual page 81
11.4 Specifications
TRANSDUCER INPUT
Transducer type full-bridge, AC/AC-LVDT
Excitation Voltage 3 VRMS @ 5kHz,
short circuit protected
Transducer full-scale output .1 to 15 VRMS @ 3 VRMS excitation
Amplifier Gain Selection automatic
Calibration Type 2-, 3- or 5- point known displacement
A/D Converter 24-bit Sigma-Delta
Low-pass filter digital, 24-tap FIR
Resolution see page 83
Frequency Response see page 83
AUXILLIARY INPUTS
Quantity 2
Type momentary contact closure
Response Time < 5ms
Field-Selectable Functions tare on, tare off,
peak/valley clear, peak/valley hold,
track hold
ANALOG OUTPUT
Voltage range (voltage output
channels)
Current range (current output
channels)
Source any channel’s track, peak or valley value
Isolation 500V
Resolution 13 bits
Frequency Response same as input if driven by the same chan-
5, ±5, 10 or ±10 VDC
4-20 mA
nel’s tracking data
page 82 008-0608-00
11.5 Channel Menu
Each AC/AC-LVDT Input channel is configured and calibrated via its channel
AC/AC-LVDT Input Channel11
menu. Detailed instructions on operating the instrument in the SETUP Menu
mode can be found in “SETUP Menu mode” on page 23. A diagram of all menus
is located in “Setup Menu Reference” on page 157.
11.5.1
OPERATION
Sub-Menu
AUTO-ZERO
FREQ. RESPONSE
Menu Item
Menu Item
This menu controls the operation of this channel when the instrument is in the
RUN mode.
This enables or disables the channel’s automatic zeroing function. When
enabled, the channel will reset its tracking value to zero when the tracking value is
less than 10 display counts for a period of 10 seconds. This removes the effect of
slight temperature shifts in the transducer’s output.
NOTICE
To compensate for the transducer’s initial warm-up shift, the auto-zero function
operates every 2 seconds during the first 60 seconds of RUN mode operation.
The two options for this menu item are “ON” and “OFF”.
This sets the frequency response, step response, and resolution of the channel
according to the table below. The tracking value, peak/valley detector values and
analog output on this channel are all affected. The default value of
suitable for most applications.
Frequency
Response
002. HERTZ/FAST
002. HERTZ
008. HERTZ
016. HERTZ
032. HERTZ
050. HERTZ
100. HERTZ
250. HERTZ
500. HERTZ
800. HERTZ
Step Response
(ms) (typical)
40 ±25000
440 ±25000
110 ±15000
55 ±10000
28 ±10000
16 ±5000
8 ±5000
3 ±2000
2 ±2000
2 ±2000
Resolution (counts) (not
including minimum 10%
overrange/underrange capability)
016. HERTZ
is
NOTICE
Your particular LVDT may have a lower frequency response than the AC-AC
LVDT Input channel.
SC Series Instruction Manual page 83
POWER-ON SOURCE
Menu Item
This menu selects which value is displayed by the channel when first entering the
RUN mode.
The choices are:
•“
TRACK
” means the live tracking value of the channel.
•“
PEAK
” means the highest value of the channel.
•“
VALLEY
” means the lowest value of the channel.
•“
TRACK / PEAK
” means the live tracking value and the highest value of the channel.
(Only available on Model SC3004).
•“
TRACK / VALLEY
” means the live tracking value and the lowest value of the channel.
(Only available on Model SC3004).
•“
PEAK / VALLEY
” means the highest and lowest values of the channel.
(Only available on Model SC3004).
page 84 008-0608-00
11.5.2
DISPLAY SETUP
Sub-Menu
DISPLAY. DIGITS
DISPLAY. DECPT
DISPLAY. COUNT-BY
Menu Item
Menu Item
Menu Item
This menu controls how data values are displayed by the channel and transmitted
AC/AC-LVDT Input Channel11
via serial communications.
Selects the number of digits displayed by the channel. The choices are:
•“
5 DIGIT-BIPOLAR
” displays both positive and negative numbers with five full dig-
its (±99999).
•“
6 DIGIT-UNIPLOAR
” displays positive numbers with six full digits (999999) and
negative numbers with five full digits (-99999).
•“
7 DIGIT UNIPOLAR”
displays positive number with seven full digits (9999999)
and negative numbers with six digits (-999999).
Selects the decimal point location on the channel’s display and serial communications output. Use the [UP] and [DOWN] buttons to move the decimal point to the
right and left.
Determines by what value the display increments or decrements. This will make
the display less sensitive to a noisy signal. The choices are:
•“
00001
”
•“
00002
”
•“
00005
”
•“
00010
”
•“
00020
”
•“
00050
”
•“
00100
”
•“
00200
”
DISPLAY. UNITS
DISPLAY. AVERAGE
11.5.3
Menu Item
AUXn FUNCTION
Items
Menu Item
Menu
Specifies the four character label that is displayed to the right of the channel’s values.
NOTICE
This menu item doesn’t change the mathematical scaling of the channel’s values; that can be changed by altering the “
menu items and then performing a re-calibration.
When a character position is flashing press the [UP] or [DOWN] button to change
the character. Press [ENTER] to advance to the next character.
Controls the speed with which the channel’s display values will update. Display
averaging does not affect the channel’s analog output or its peak/valley detection,
which will proceed at the speed selected by the ”
item. The choices are:
•“
ON
” means that the display will update four times each second. The channel’s
values will be averaged for 1/4 second, then displayed.
•“
OFF
” means that the channel’s display will update as quickly as possible.
The
AUX1 FUNCTION
and
AUX2 FUNCTION
menu items determine what happens when the
Auxiliary Function pins (labeled as “AUX1” and “AUX2”) on the channel’s connector are activated. These pins are “activated” when they are connected to the
DGND pin. The choices are:
CALIBRATION DATA
OPERATION
->
->
FREQ. RESPONSE
KNOWN POINT X/Y
”
” menu
•“
DISABLED
•“
TRACK HOLD
” means that activating the pin does nothing.
” means that the tracking, peak and valley values will not be
SC Series Instruction Manual page 85
updated.
•“
HIGH/LOW HOLD
•“
HIGH/LOW CLEAR
•“
TARE ON
•“
TARE OFF
” means that the peak and valley values will not be updated.
” means that the peak and valley values are reset.
” activates the channel’s Tare function (resets it to zero).
” deactivates the channel’s Tare function.
As the Auxiliary Function pins are not isolated, it is recommended that a push-button
switch or relay is used to connect these pins to the DGND pin.
page 86 008-0608-00
11.5.4
CALIBRATION TYPE
Menu Item
The choices for this menu item are:
•“
TYPE= 2 POINT CAL
” means 2-Point Known Displacement Calibration. You are
prompted to apply the displacements to the transducer that were entered in
the “
KNOWN POINT 1/2
” and “
KNOWN POINT 2/2
” registers. This technique assumes
that the transducer is linear throughout the entire stroke, so the usual displacements used are zero scale and full scale.
•“
TYPE= 3 POINT CAL
” means 3-Point Known Displacement Calibration. You are
prompted to apply the displacements to the transducer that were entered in
the “
KNOWN POINT 1/3
” and “
KNOWN POINT 2/3
” and “
KNOWN POINT 3/3
technique can be used to compensate for the different sensitivities that an
LVDT may have on each side of its electrical null. The usual displacements
used are zero scale, half scale and full scale, but you are not restricted to
these displacements.
•“
TYPE= 5 POINT CAL
” means 5-Point Known Displacement Calibration. You are
prompted to apply the displacements to the transducer that were entered in
the “
KNOWN POINT 1/5
“
KNOWN POINT 5/5
”, “
KNOWN POINT 2/5
”, “
KNOWN POINT 3/5
”, “
KNOWN POINT 4/5
” registers. This technique can be used to compensate for the
non-linearity in the transducer as well as the different sensitivities on each
side of its electrical null. The usual displacements used are zero scale, onequarter scale, half scale, three-quarters scale and full scale, but you are not
restricted to these displacements.
The selection of the calibration type affects what menu items appear in the
BRATION DATA
sub-menu.
AC/AC-LVDT Input Channel11
” registers. This
” and
CALI-
SC Series Instruction Manual page 87
11.5.5
DATA
Sub-Menu
CALIBRATION
This sub-menu enters the values that will be used by the instrument when it calibrates
itself to the transducer. The menu items that are displayed will change according to
what the
CALIBRATION TYPE
is set for.
FULL SCALE VRMS
KNOWN POINT x/y
Menu Item
Menu Items
The transducer output when its full-scale displacement is applied to it, in Volts RMS
(root-mean-squared) assuming 3 VRMS excitation. This menu item is used by the
instrument to set gain of its amplifier circuit. This value is normally found on the transducer’s Certificate of Calibration issued by its manufacturer.
This enters the engineering units for the known-displacement calibration points.
These points must match the actually displacements that you will apply to the transducer during calibration. The number of calibrations points depends on the
.
TYPE
CALIBRATION
When using the 2-Point Known Displacement Calibration type, the following menu
items are available:
•“
KNOWN POINT 1/2
•“
KNOWN POINT 2/2
”: point 1 of 2, usually 0% of the transducer’s full-scale capacity.
”: point 2 of 2, usually 100% of the transducer’s full-scale capacity.
When using the 3-Point Known Displacement Calibration type, the following menu
items are available:
•“
KNOWN POINT 1/3
•“
KNOWN POINT 2/3
•“
KNOWN POINT 3/3
”: point 1 of 3, usually 0% of the transducer’s full-scale capacity.
”: point 2 of 3, usually 50% of the transducer’s full-scale capacity.
”: point 3 of 3, usually 100% of the transducer’s full-scale capacity.
When using the 5-Point Known Displacement Calibration type, the following menu
items are available:
•“
KNOWN POINT 1/5
•“
KNOWN POINT 2/5
•“
KNOWN POINT 3/5
•“
KNOWN POINT 4/5
•“
KNOWN POINT 5/5
”: point 1 of 5, usually 0% of the transducer’s full-scale capacity.
”: point 2 of 5, usually 25% of the transducer’s full-scale capacity.
”: point 3 of 5, usually 50% of the transducer’s full-scale capacity.
”: point 4 of 5, usually 75% of the transducer’s full-scale capacity.
”: point 5 of 5, usually 100% of the transducer’s full-scale capacity.
NOTICE
To insure both correct operation of the transducer and application of the displacement, the instrument expects the voltage applied at each known-displacement point to be increasing. For example, the displacement applied at KnownDisplacement Point 2/2 must cause the transducer to produce a more positive
voltage than at Known-Displacement Point 1/2. You may need to swap the
(+)Signal and (-)Signal wires on the 12-pin channel connector to accomplish
this.
page 88 008-0608-00
11.5.6
Item
CALIBRATE
Menu
This menu item performs a calibration according to what was entered in the
BRATION TYPE
CALIBRATION DATA
menu items.
and
NOTICE
Before performing a calibration,
the transducer must be connected to the instrument, the
be selected (see “
TION DATA
must be entered (see “
CALIBRATION TYPE
CALIBRATION DATA
Menu Item” on page 87) and the
Sub-Menu” on page 88).
CALIBRATION TYPE
must
CALIBRA-
NOTICE
For maximum accuracy, allow at least twenty minutes of warm-up with the excitation voltage applied to the transducer before calibration.
CALIBRATION TYPE
If the
• The display will read
(where 00000 and UNIT are previously entered as
). When you have applied this displacement to the transducer, press
UNITS
[ENTER].
• The display will read
previously entered as
applied this displacement to the transducer, press [ENTER].
• Upon completion, the display will indicate
the RUN mode.
is 2-Point Known Displacement Calibration...
DOING 2POINT CAL
WORKING
, then
KNOWN POINT 2/2
, and prompt you to
APPLY 01000 UNIT
and
DONE
(where 01000 and UNIT are
DISPLAY. UNITS
and the instrument will return to
APPLY 00000 UNIT
KNOWN POINT 1/2
). When you have
and
DISPLAY.
CALI-
AC/AC-LVDT Input Channel11
If the
CALIBRATION TYPE
• The display will read
(where 00000 and UNIT are previously entered as
). When you have applied this displacement to the transducer, press
UNITS
is 3-Point Known Displacement Calibration...
DOING 3POINT CAL
, and prompt you to
KNOWN POINT 1/3
[ENTER].
• The display will read
previously entered as
WORKING
, then
APPLY 00500 UNIT
KNOWN POINT 2/3
and
(where 00500 and UNIT are
DISPLAY. UNITS
applied this displacement to the transducer, press [ENTER].
• The display will read
previously entered as
WORKING
, then
APPLY 01000 UNIT
KNOWN POINT 2/3
and
(where 01000 and UNIT are
DISPLAY. UNITS
applied this displacement to the transducer, press [ENTER].
• Upon completion, the display will indicate
DONE
and the instrument will return to
the RUN mode.
If the
CALIBRATION TYPE
• The display will read
(where 00000 and UNIT are previously entered as
). When you have applied this displacement to the transducer, press
UNITS
is 5-Point Known Displacement Calibration...
DOING 5POINT CAL
, and prompt you to
KNOWN POINT 1/5
[ENTER].
• The display will read
previously entered as
WORKING
, then
APPLY 00250 UNIT
KNOWN POINT 2/5
and
(where 00250 and UNIT are
DISPLAY. UNITS
applied this displacement to the transducer, press [ENTER].
• The display will read
WORKING
, then
APPLY 00500 UNIT
(where 00500 and UNIT are
APPLY 00000 UNIT
and
DISPLAY.
). When you have
). When you have
APPLY 00000 UNIT
and
DISPLAY.
). When you have
SC Series Instruction Manual page 89
previously entered as
KNOWN POINT 3/5
and
DISPLAY. UNITS
this displacement to the transducer, press [ENTER].
• The display will read
viously entered as
WORKING
, then
KNOWN POINT 4/5
APPLY 00750 UNIT
and
DISPLAY. UNITS
displacement to the transducer, press [ENTER].
• The display will read
viously entered as
WORKING
, then
KNOWN POINT 5/5
APPLY 01000 UNIT
and
DISPLAY. UNITS
displacement to the transducer, press [ENTER].
• Upon completion, the display will indicate
DONE
RUN mode.
). When you have applied
(where 00750 and UNIT are pre-
). When you have applied this
(where 01000 and UNIT are pre-
). When you have applied this
and the instrument will return to the
page 90 008-0608-00
11.5.7
DAC. CHANNEL
DAC. SOURCE
DAC SETUP
Sub-Menu
Menu Item
Menu Item
This sub-menu contains four items that control the Digital-to-Analog (DAC) output
of the channel.
This chooses which channel will drive the DAC output. Normally, the DAC located
on a particular channel will be driven by that channel, but that need not be the
case. For example, if several channels were assigned to various transducers in a
system, the sum of all channels could (mathematically) drive one channel’s DAC
output.
If the DAC is set-up to be driven by its own channel’s tracking value, the Analog
Output will have the frequency response specified by the channel’s
FREQ. RESPONSE
menu item. Otherwise, the Analog Output will operate more slowly.
This designates the data source of the channel monitored by the analog output.
Each channel has three data sources: the live tracking value (TRACK), its highest
value (PEAK), and its lowest value (VALLEY).
The options for this menu item are:
•“
TRACK
” means the live tracking value of the channel.
•“
PEAK
” means the highest value of the channel since the peak/valley detector
was last cleared.
•“
VALLEY
” means the lowest value of the channel since the peak/valley detector
was last cleared.
If the DAC is set-up to be driven by its own channel’s tracking value, the Analog
Output will have the frequency response specified by the channel’s
FREQ. RESPONSE
menu item. Otherwise, the Analog Output will operate more slowly.
AC/AC-LVDT Input Channel11
DAC. ZERO-SCALE
DAC. FULL-SCALE
Menu Item
Menu Item
This specifies what value, in engineering units, corresponds to zero output on the
Analog Output.
“Zero output” might be 0 Volts, 2.5 Volts, 5 Volts, 4 mA or 12 mA depending on if
the channel has a voltage or current output and how it is configured. See “Analog
Output Configuration” on page 94 for details.
This specifies what value, in engineering units, corresponds to full output on the
Analog Output.
“Full output” might be 5 Volts, 10 Volts or 20 mA depending on if the channel has
a voltage or current output and how it is configured. See “Analog Output Configuration” on page 94 for details.
SC Series Instruction Manual page 91
11.5.8
DIAGNOSTICS
Sub-Menu
DAC FULL SCALE
DAC ZERO SCALE
VERSION INFO
DISPLAY ADC
LINEARIZATION
Menu Item
Menu Item
Menu Item
Menu Item
Menu Item
When this menu item is selected, the Analog Output of the channel is forced to its fullscale output, then
DAC UPDATED
is displayed. This is useful when calibrating or trimming
the readout connected to the Analog Output.
When this menu item is selected, the Analog Output of the channel is forced to its
zero-scale output, then
DAC UPDATED
is displayed. This is useful when calibrating or trim-
ming the readout connected to the Analog Output.
This menu item displays the part number and revision level of the firmware used by
this channels microprocessor.
The options for this menu item are:
•“
OFF
” will allow the [VALUE] button to cycle through “TK” (tracking value), “HI” (peak
value) and “
•“
ON
” will allow the “AD” (percentage of the Analog-to-Digital converter’s full-scale
digitizing capability) display source to be available along with “
“
HI
” (peak value) and “LO” (valley value) when the [VALUE] button is pressed on
LO
” (valley value). This is the recommended option.
TK
” (tracking value),
the front panel.
The Analog-to-Digital converter counts are displayed as a percentage from -100.00%
to 100.00%.
This can be used to establish the transducer’s electrical null prior to mounting. See
“Electrical Null and Transducer Mounting” on page 93 for this procedure.
The options for this menu item are:
•“
ON
” will allow linearization data obtained from a 3-Point or 5-Point Known Displacement Calibration to affect a channel’s scaled values. This is the recommended option.
•“
OFF
” will not allow linearization data to effect the channel’s scaled values.
DISABLE CHANNEL
Menu Item
page 92 008-0608-00
The options for this menu item are:
•“
ON
” will bypass the INITIALIZE and RUN modes of the channel. The track, peak
and valley values of the channel are forced to 0.
•“
OFF
” will allow normal operation of the channel.
11.6 Electrical Null and Transducer Mounting
AC/AC-LVDT Input Channel11
11.6.1 Overview
11.6.2 Procedure
The mechanical travel of an LVDT transducer is not the same as its usable measuring range. All LVDTs exhibit some non-linearity near the ends of its armature’s
mechanical travel. To insure that the LVDT will be used in its linear measuring
range, its electrical null point must be determined. This electrical null point is the
armature position which produces the minimal electrical signal output. After electrical null has been established, the LVDT is clamped down into final position in its
mounting fixture.
As long as the LVDT remains clamped in this position, you do not need to reestablish the electrical null prior to every calibration.
Step 1: Use the channel’s SETUP menu and set
Exit the SETUP menu and re-start the instrument.
Step 2: Display the channel to which the LVDT is connected. Press and release
the [VALUE] button until the “
analog-to-digital converter readings displayed as a percentage of its fullscale (-100% to +100%).
Step 3: Move the LVDT’s armature to the position which displays the lowest value
of raw analog-to-digital converter readings (i.e. a number close to
This is the LVDT’s electrical null.
Step 4: Firmly clamp down the LVDT’s body.
Step 5: Move the LVDT’s armature to roughly the position you wish to define as
“positive full scale”. If the displayed analog-to-digital converter reading is a
negative value, you must swap the wires connected to the (+)Signal and
(-)Signal pins (labeled as “+SIG” and “-SIG”) on the channel’s 12-pin connector to make the reading positive.
AD
” display source is shown. This is the raw
DIAGNOSTICS
->
DISPLAY ADC
to “ON”.
00.000%
.
SC Series Instruction Manual page 93
11.7 Analog Output Configuration
11.7.1 Identifying the Output Type
11.7.2 Channel Menu Items
11.7.3 Output Selection
An AC/AC-LVDT Input channel is available with one of two types of digital-to-analog
(DAC) outputs: voltage or current. You can determine which type of output a channel
has by one of three ways:
• Consulting the instrument’s Customer Information Sheet
• Examining the
the number of the channel. If the channel’s type is
output. If the channel’s type is
SYSTEM MENU
->
CONFIGURATION
AC-AC LVDT I
->
, it has a current output.
CHANNEL
nn
AC-AC LVDT V
TYPE
menu item where nn is
, it has a voltage
• Examining the channel’s circuit board as shown in the figure below.
The Analog Output can be driven by any channel’s track, peak or valley value.
See the “Channel Menu” section earlier in this chapter for a complete listing of SETUP
menu items available on the
DAC. SETUP
sub-menu.
Jumpers located on the channel’s circuit board determine what outputs are generated
when the value selected to drive the Analog Output (from the
menu items) equals the
SOURCE
DAC. FULL SCALE
and
DAC. ZERO SCALE
DAC. CHANNEL
and
settings.
DAC.
page 94 008-0608-00
Figure 11-2: Digital-to-Analog Output Jumper Locations
DAC. ZERO SCALE
Output
DAC. FULL SCALE
Output
J30
jumper
J31
jumper
CHANNELS WITH VOLTAGE OUPUT
0-5V 2.5 Volts 5 Volts open closed
±5V 0 Volts 5 Volts open open
0-10V 5 Volts 10 Volts closed closed
±10V 0 Volts 10 Volts closed open
CHANNELS WITH CURRENT OUTPUT
4-20mA 4 mA 20 mA open open
4-20mA 12 mA 20 mA open closed
11.8 Troubleshooting
11.8.1 Error Messages
11.8.2 Common Problems and Solutions
See “Error Messages” on page 151 for information relating to error messages.
AC/AC-LVDT Input Channel11
Erratic Display
+OVLD or -OVLD on Display
Analog Output Incorrect
Auxiliary Function Pins Not Operating
Check electrical connections for continuity and the transducer’s wiring code from its
Certificate of Calibration.
Make sure that the displacement on the transducer is constant.
Check the input to the (+)Signal (“+SIG”) and (-)Signal (“-SIG”) pins with an RMS voltmeter in its “AC Voltage” mode. Using a voltmeter in its DC Voltage mode will always
display 0.
Indicates that the voltage across the (+)Signal (“+SIG”) and (-)Signal (“-SIG”) pins is
overranging or underranging the amplifier circuit. Make certain all wires are connected properly, the “
CALIBRATION DATA
->
FULL SCALE VRMS
” menu item is set correctly, and
that a calibration has been performed per “Calibration Procedure” on page 81.
If you move the armature back to its electrical null point and you still see this message, the (+)Excitation (“+EXC”) or (-)Excitation (“-EXC”) pins may be shorted to the
(+)Signal (“+SIG”) or (-)Signal (“-SIG”) pins.
Make certain of the type of Analog Output (voltage or current) that the channel is
equipped with; see “Identifying the Output Type” on page 94.
Use the
DIAGNOSTICS
->
DAC FULL SCALE
and
DIAGNOSTICS
->
DAC ZERO SCALE
menu items to
force the Analog Output to a known output. Then, adjust your readout device, panel
meter, PLC or data acquisition system to match.
Check the output selection jumpers; see “Output Selection” on page 94.
Make sure that the
if they are set to
AUX1 FUNCTION
DISABLED
then they will not operate.
or
AUX2 FUNCTION
SETUP menu items are set correctly;
The Auxiliary Function (“AUX1” and “AUX2”) pins must be connected to pin 10, not pin
8, to activate them.
Sensitivity to EMI/RFI
Non-linearity at the end of the LVDT’s mechanical range
To obtain maximum immunity to electromagnetic or radio frequency interference,
make certain that the shields of the transducer cables are connected to the “cable
shield connection screw” on the rear panel of the instrument. See “Connection of
Four- or Five-wire AC/AC-LVDT” on page 80, “External Arrangement of AC powered
SC1000 and SC2000” on page 27 and “External Arrangement of Model SC3004” on
page 33.
Most LVDTs have a usable measuring range that is smaller than their mechanical
range. See “Electrical Null and Transducer Mounting” on page 93 for information on
establishing the LVDT’s electrical null point to insure that the LVDT will be operated in
its usable measuring range.
SC Series Instruction Manual page 95
page 96 008-0608-00
12.1 Features
Chapter 12
High-Level Input Channel
The High-Level Input channel provides a DC supply voltage to and accepts voltage or current signals from amplified transducers such as pressure transducers,
load cells and DC-DC LVDTs. These signals are digitized, converted into engineering units, and placed into the track, peak and valley data values of the channel. Setup and calibration of the channel is made manually through the SETUP
menu mode. Signature Calibration is not available with amplified transducers.
The analog-to-digital converter input circuit features adjustable digital, low-pass
filtering, 12- to 18-bit resolution (depending on the filter setting) and has several
different input ranges. These many ranges allow ±50,000 count resolution (at the
slowest filter setting) across a wide variety of input ranges.
A combination of SETUP menu items and hardware jumpers are used to configure the excitation supply output voltage (+28 VDC, ±15 VDC, +15 VDC or +12
VDC), the input type (voltage or current) and input reference (differential or single
ended).
High-Level Input Channel12
Two methods of calibrating the High-Level Input channel to the transducer are
available: known-load calibration and shunt calibration. The benefits of each are
discussed in “
Two rear panel control inputs can be field-configured for such functions as remote
tare, disabling peak/valley detection and clearing the peak/valley values. A voltage or current digital-to-analog output is also provided.
CALIBRATION TYPE
Menu Item” on page 113.
SC Series Instruction Manual page 97
12.2 Wiring
12.2.1 Channel Connector
Connect the amplified transducer, in-line amplifier or DC-DC LVDT to a High-Level
Input channel by wiring it to the 12-pin connector of that channel. The Customer Information Sheet that shipped with the instrument describes which cards are installed in
each channel. The pin-out for this connector is shown on the following table.
Table 1-6: High-Level Input Channel Pin Connections
Pin Label Function Reference Pin
1 (top) +EXC (+)Excitation 10
2 SHUNT1 Shunt Cal Relay 3
3 -SHUNT2 Shunt Cal Relay 2
4 -EXC (-)Excitation 10
5 +SIG (+)Signal 10
6 -SIG (-)Signal 10
7 +OUT Analog Output 8
8 -OUT Analog Return -
9 N/C No Connection -
10 DGND Digital Ground -
11 AUX1 Auxiliary Function 1
(connect to pin 10 to activate)
12
(bottom)
AUX2 Auxiliary Function 2
(connect to pin 10 to activate)
10
10
The Analog Output and Analog Return pins are electrically isolated from all other pins
on the instrument.
CAUTION
Identify the amplified transducer or in-line amplifier according to the Option
Code or model name as shown on its serial number tag. Use this information
to select the correct wiring diagram on the following pages. Incorrect wiring can
damage both the transducer and the instrument.
Failure to comply with these instructions may result in product damage.
page 98 008-0608-00
12.2.2 Bi-polar Voltage Amplifiers
Use the following wiring diagram when connecting an amplified transducer, in-line
amplifier or DC-DC LVDT with a bi-polar voltage amplifier to a High-Level Input
channel. Examples of such devices include
• transducers with Option 2a or Option 2b internal amplifiers (with shunt cal)
• Models UBP or UBP-10 Universal In-Line amplifiers (with shunt cal)
• Models JEC (replaces model MDL), JEC-AG (replaces model DLA), JEC-C
(replaces model MDLC), DW7U, DW7C and DW7S DC-DC LVDTs (no shunt
cal)
NOTICE
See “Low Voltage DC-DC LVDTs” on page 105 for information on wiring Model
DLB, DLE and DLF low-voltage DC-DC LVDTs.
The High-Level Input channel’s Configuration Jumpers must be set as follows for
proper operation. See “Excitation and Signal Jumpers” on page 106.
• (+)Excitation supply: “+15 VDC”
• (-)Excitation supply: “-15 VDC”
• Signal type: “voltage”
• Signal reference: “single ended”
.
High-Level Input Channel12
Figure 12-1: “Bi-polar Voltage Amp” Connection to High-Level Input Channel
SC Series Instruction Manual page 99
12.2.3 “3-wire Voltage” Amplifiers
Use the following wiring diagram when connecting an amplified transducer or in-line
amplifier with a 3-wire voltage amplifier to a High-Level Input channel. Examples of
such devices include
• transducers with Option 2c or Option 2t internal amplifiers (with shunt cal)
• Models UV or UV-10 Universal In-Line amplifiers (with shunt cal)
The High-Level Input channel’s Configuration Jumpers must be set as follows for
proper operation. See “Excitation and Signal Jumpers” on page 106.
• (+)Excitation supply: “+28 VDC”
• (-)Excitation supply: “GND”
• Signal type: “voltage”
• Signal reference: “differential”
Figure 12-2: “3-wire Voltage Amp” Connection to High-Level Input Channel
page 100 008-0608-00
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