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Tescom ER3000 User Manual
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4. Installation
13
4.3
Basic ER3000 to PC W
iring
The necessary w
iring for the ER3000 commu
nicating to a PC is show
n in Figure
2. A PC is typically u
sed to co
mm
unicate to the ER3000 digitally, but any
device capable of the interface proto
col could be used,
such as a PLC.
Note: For USB-RS485 converter, see instructions included with converter.
Figure 2: ER3
000 Ba
sic Wirin
g Diagram
13
15
Table of Contents
Default Chapter
4
Table of Contents
4
1 Introduction
8
2 Specifications
9
Enclosure
9
Media
9
Inlet Pressure
9
Environment
9
Flow Rate
9
Power Requirement
9
Rs485 Communication
9
Interface
9
Accuracy
10
Response Time
10
Ports
10
Weight
10
External Analog
10
Digital Outputs
10
Digital Inputs
10
Analog Output
10
Sensor Updater
10
Input Impedance
10
3 Er3000 Part Numbering System
11
4 Installation
12
Interface Cable
12
Voltage/Current Select Jumpers
13
Figure 1: Voltage/Current Select Jumpers
13
Basic ER3000 to PC Wiring
14
Figure 2: ER3000 Basic Wiring Diagram
14
Setting up a Typical ER3000 Pressure Control System
15
Plumb the External Regulator and Transducer
15
Ontrol System
15
Figure 3: ER3000 Typical System Wiring Diagram
15
Mount the ER3000
16
Connect the Power Supply
16
Connect RS485 Interface Connections
16
Install the "ER3000 (CVI)" Windows Program
16
Communicate to the ER3000, Using the ER3000 (CVI) Windows Program
16
Connect Transducer Wiring
17
Connect Pressure to the System
17
Tune the System
17
Additions and Variations to the Typical System
18
Transducer Wiring Configurations
18
Ystem
18
Figure 4: Three-Wire External Feedback Cabling
18
Figure 5: Four-Wire External Feedback Cabling
19
Analog Setpoint Source
20
Figure 6: Passive PC or PLC D/A Card Analog Setpoint (4-20Ma)
20
Figure 7: Active PC or PLC D/A Card Analog Setpoint (4-20Ma, 1-5V, 0-10V)
20
Figure 8: Potentiometer Analog Setpoint
21
Figure 9: Current/Voltage Analog Setpoint
21
Monitor the Feedback Signal
22
Figure 10: Monitor 4-20Ma External Feedback (Floating Input)
22
Figure 11: Monitor 4-20Ma External Feedback (Ground Referenced Input)
22
Figure 12: Monitor Voltage Produced by 4-20 Mamp External Feedback
23
Figure 13: Monitor 1-5V/0-10V External Feedback
23
Profile Control / Digital Inputs
24
Figure 14: External Profile Control
24
Switch Feedback Control to a Second Feedback Source
25
Monitor Analog Signals
25
Figure 15: Switch between Two External Feedback Sources
25
Networking Er3000'S
26
Figure 16: Networking/Daisychaining Er3000'S
26
Digital Outputs
27
Figure 17: ER3000 Digital Outputs
27
Monitor Internal Sensor Using the Analog Output
28
Figure 18: Monitor Internal Sensor (4-20Ma Wiring)
28
Figure 19: Monitor Internal Sensor (0-10V Wiring)
28
5 Operation
29
Theory of Operation
29
PID Control
29
Control Modes
30
Internal Feedback Mode
30
External Feedback Mode
30
Cascade Loop Mode
31
Manual Mode
31
Setpoint Sources
31
Failsafe Limits
32
Leds
32
Rs485 Communication
32
Protocol
32
6 Tuning Procedure
33
Typical Application to Tune
33
Figure 20: Regulator and ER3000 Internal Operation
33
Tune the Typical Application
35
7 Calibration
40
Zero/Span
40
8 Software Programs
41
Windows Tune Program
41
Windows Example Programs
41
Tescom Protocol (Provides Custom Software Support)
41
DOS Library
42
Windows DLL
42
Macintosh Custom Software
43
Dos Programs
43
Tune
43
Ertalk
43
Profile
43
Profile2
43
Data_Log
44
Test_Pr
44
9 Er3000 Internal Variables
45
Setpoint and Feedback Variables
45
Configuration Variables
45
Inner Loop Tuning Variables
46
Outer Loop Tuning Variables
46
Analog Input Variables
47
Control Variables
47
Pulse Modev
48
Scaling Variables
48
Olenoid Control Variable
48
Ariables
48
Pwm Controlv
49
Output Variables
49
Ariables
49
Gain /Offsetv
50
Ariables
50
Failsafe Variables
51
Table of All
52
Er3000 Internal Variables
52
10 Troubleshooting
55
Led Indicators
55
Figure 21: LED Locations
55
Led Indicators
56
Rs232/Rs485 Converters
56
Acceptable R
58
Test , Using Led Indicators Ommunications Test , Using Problems
58
Esistance Values
58
ER3000 RS485 Interface
58
Converter RS485 Interface
58
Leak Test
59
Windows ER3000 Program
59
DOS Tune Program
59
11 Er3000 Accessories
61
12 Mechanical Dimensions of Er3000
62
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Tescom ER3000 Specifications
General
Brand
Tescom
Model
ER3000
Category
Controller
Language
English
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