Emerson ECB-D20 Manuals

Emerson ECB-D20 Manuals

Manuals and User Guides for Emerson ECB-D20. We have 1 Emerson ECB-D20 manual available for free PDF download: Technical Information

Emerson ECB-D20 Technical Information

Emerson ECB-D20 Technical Information (42 pages)

REFRIGERATION CONTROL SYSTEM FOR DISPLAY CABINETS

Brand: Emerson | Category: Control Systems | Size: 1 MB

Table of Contents

ECB-D20 Refrigeration Control System for DISPLAY CABINETS
1
Table of Contents
2
Safety Notes
4
Basic Configuration
4
Installation and Wiring
4
Commissioning
4
Introduction
5
Figure 1 Refrigeration Cycle
5
Assembly and Installation
6
Contact Assignment
6
Table 1: Connector Assignment
7
Relay
8
Figure 2 Connector Position on PCB
8
High and Low Pressure Switches
9
Alarm Relay
9
Modbus Communication
9
Table 2: Logic Safety Chain
9
Figure 3 Modbus Wiring
9
Bus Termination / Polarization
10
Figure 4 RJ 45 to XJ485USB Adapter Cable
10
Figure 5 Jumpers
10
Figure 6 Bus Termination
11
Inputs/Outputs
12
Relay Outputs
12
Display Unit
12
Digital Inputs
12
Compressor Safety Chain for High and Low Pressure Switches
12
Figure 7: Safety Concept
12
Sensor Inputs
13
Figure 8: Sensor Positions
13
Electronic Expansion Valve (EXV)
14
Figure 9: EXV Connection
14
Figure 10: EXM/EXL-246 Windings
14
Communication / Modbus Address
15
Table 3: Modbus DIP Switches
15
Table 4: Modbus Addresses
15
Digital Inputs
16
Defrost Synchronization
16
Configurable Digital Inputs
16
Lighting Controls (Day/Night Operation)
16
Bus Alarm
16
Door Input
16
Standby Mode
16
Figure 11: DIP Switch
16
External Devices (Modbus Master)
17
Figure 12 Internal Modbus Wiring
17
Emerson ED3 Drive
18
Carlo Gavazzi Soft Starter
18
EBM ESM Fan
18
Functions and Parameters
19
Parameter List Description
19
Figure 13 Fixed Speed Control
19
Figure 14 Variable Speed Control
19
Figure 15 Fix Speed Control
20
Figure 16 Variable Speed Control
20
Figure 17: Shift of Defrost Interval's by Modbus Address
22
Figure 18: Demand Defrost Detection
25
Figure 19: Deadband Control
26
Table 5: Defrost Modes
27
Figure 20: Synchronized Defrost
28
Figure 21: Pack Defrost Compressor Delay at Hot Gas Defrost
28
Figure 22: Pack Cycle Compressor Delay at Thermostat Emergency Operation
29
Figure 23: Pack Controller Dead Band Mode
29
Figure 24: Pack Controller Percentage Mode
29
Table 6: Relay Functions
31
Table 7: Digital Input Configuration
31
Figure 25 Pack One-Shot Mode
33
Display Unit Functions (ECD-D05/06)
34
Figure 26 Hotgas Defrost Sequence with / Without 4Way-Valve Switching
34
Figure 27: Display Unit ECD-D05/06
34
Limited Configuration Parameters Using Display Unit
35
Configuration Using Display Unit
35
Defrost Request Using Keyboard
36
Temporary Daytime Operation Using Keyboard
36
Standby (Cleaning Mode) Using Keyboard
36
Setting of Real-Time Clock
36
Defrost
36
Defrost Controls
36
Defrost Sequence
36
Defrost Process
37
Termination of the Defrost Process
37
Defrost Monitoring
37
Figure 28: Defrost Phases
37
Defrost Start Using Real-Time Clock
38
Defrost Synchronization
38
Alarms
39
Table 8: Alarm Codes
39
Hardware Alarms
40
Software Alarms
40
Critical Alarms
41
Technical Data
42
Table 9: Technical Data
42

Advertisement

Advertisement

Related Products

Emerson Categories

Controller Control Unit Transmitter Measuring Instruments Fan

More Emerson Manuals