Mitsubishi Electric s-MEXT-G00 006 User Manual (English)

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COMPUTER ROOM AIR CONDITIONER

MODEL

s-MEXT-G00 006-044

TECHNICAL MANUAL

TRANSLATION OF THE ORIGINAL INSTRUCTIONS

Table of Contents4
Introduction7
Safety Requirements7
General Functions7
Units Controlled7
User Interface8
User Terminal8
Technical Characteristics8
General Functions of Keys and Leds8
General Characteristics of the Interface9
Groups of Masks and Menu Structure9
Password Management11
Main Mask13
Main Loop Masks16
List of the Main Loop Masks16
Main Loop Mask Table16
Active Function Display Mask21
Safety Reduction Load (Lp) Display Mask23
Changing the Parameters24
Access to Parameter Changing24
Menu Mask Table24
Parameter Table57
Events Masks64
Events Table64
Table of Internal Humidifier Alarms with CPY Control68
Starting the Unit69
Software Upload69
Unit Power Supply69
Ventilation Start-Up69
Start of Automatic Adjustment70
Forced Ventilation Activation71
Manual Management71
Notes on Temperature Adjustment72
Management of the Limits of the Cold Setpoint72
Regulation Probe Management72
Return Setpoint Compensation73
Cooling74
Communication with the Mr Slim Unit74
Connection to Only One External Mr Slim Unit74
Connection to more than One External Mr Slim Unit74
Cold Request Generation75
Management of Dehumidification76
Minimum Delivery Temperature Limit77
Objectives77
Adjustment Logic77
Heating78
On/Off Heating Element Management78
Post-Ventilation Function for the Electric Heaters78
Dehumidify79
Dehumidification Start-Up79
Dehumidification Limits79
General Considerations79
Upper Limit79
Lower Limit80
Combination of the Limits80
Low Dehumidification Temperature Limit81
Timed Dehumidification Function81
Post - Heating81
Dehumidification Setpoint Limit82
Humidify82
Introduction82
Integrated Humidifier82
Operating Principle82
Vapour Production Regulation83
Cylinder and Line Initial Pre-Wash83
Reset Cylinder Hour Counter83
Dilution Drain83
Periodic Drain83
Drain Due to Inactivity83
Alarm Management83
Maintenance of the Integrated Dehumidifier84
Temperature and Humidity Probe84
Room T+H Probe84
Remote T+H Probe84
Internal Air Fan Management85
Introduction85
Standard Operation85
Modulating Function85
Economy Function85
Automatic Speed Regulation Function86
Constant Flow Rate Regulation86
Calibrating the Constant Flow Function87
Constant Residual ∆P Regulation87
Operation Data Display89
Damper Management90
Delivery Damper90
Direct Free Cooling Damper90
Temperature Adjustment in Units with Direct Freecooling91
Adjustment of Split Type Units and Direct Freecooling with Damper91
Enabling Direct Free Cooling91
Maximum Humidity Limit92
Direct Free Cooling Operation During Cold Resource Alarm92
Direct Free Cooling Status Display Mask92
Pressure Protection and Control Functions93
Frost-Free Function with Low Pressure Probe93
Safety Reduction Load (Lp) Function94
Network Transducer96
Management of Dual Supply96
Alarm and Maintenance Management97
Origin of Alarms97
Threshold Alarms97
High and Low Room Temperature Alarm97
High and Low Room Humidity Alarm97
Pac-If013B-E Alarms98
Alarm or Signal Events98
Event Notification Relay99
Event History99
General Information99
Event Log Display - User Level99
Event Log Display - Service Level99
Events Mask100
Deleting the Events Log100
Black Box for Parameters100
Maintenance Signals100
Hardware101
Description of the Leds101
Input/Output Configuration Table102
Main Controller102
Expansion No. 1 (Address 8)103
Hardware Architecture104
Addressing the Modbus Communication Modules105
Fieldbus 1105
Configuration of T+H Probe Module Communication105
Fieldbus 2106
Master PAC-IF013BE Interface Card Communication Configuration106
Local Lan Network Management107
Purpose of the Local Lan Network107
Preliminary Operations107
Introduction107
Network Cabling107
Network Configuration108
Addressing the Control Board - from the Board108
Address Setting the Control Board - from the User Terminal109
User Terminal Address Setting109
Network Status Display (Netstat)109
Settings on the User Terminal110
Backup Unit Management (Stand-By)110
Introduction110
Rotation Management110
Reserve Unit Activation Mode110
Backup Activation Events111
Management of Two Backup Units112
Exceeding the Limits112
Active Fan on Stand-By114
Temperature and Humidity Average Management115
Introduction115
Average Calculation115
Enabling the Average for Use115
H&L Local Temperature Protection116
Lan Alarm Management118
Preliminary Considerations118
Management Algorithm118
Examples118
Consequences of the Alarm120
Reactions to Alarms Within the Lan Network120
Missing Air Flow Alarm Event120
Gas Leak Detected Alarm Event120
Shared User Terminal121
Connecting the Remote Keyboard121
T" Shunt121
Remote Keyboard up to 200 Metres122
Remote Keyboard from 200 Metres up to 500 Metres122
Remote Keyboard for more than One Unit122
Annexes123
Pid Adjuster Control Parameters123
Proportional Action123
Integral Action123
Derivative Action124
The Combined Effect of the Three Actions124
Anti-Windup Control (Control of Integral Error)124
Definition of the Humidifier's Configuration Parameter125

Brand	Mitsubishi Electric
Model	s-MEXT-G00 006
Category	Air Conditioner
Language	English

Mitsubishi Electric s-MEXT-G00 006 User Manual

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