System Overview
Building Management System controls(BMS) with controllers, sensors, interfaces, software, terminals, and wiring, etc. to provide automatic control and monitoring of the building services.
Operating System: Windows XP 32bit Professional version, Windows XP 64bit Professional version, Windows 7 32bit Ultimate version, Windows 7 64bit Ultimate version.
Software Version:3.0.X
Running Environment:Must install Net Framework 2.0 and .Net Framework 4.0.
System Summery
The building management system software provides monitoring, management and automatic control functions for all items of plant, equipment and systems identified as requiring a BMS function and operation.
Building management system consists of following:
· Supervisor PC
· BMS Control Panels
· Field Devices
Supervisor PC is installed for the control and monitoring of BMS system and it is interfaced to the new BMS panels to exchange data and control.
Building management system control panels are installed to control the equipments connected to it.
The field devices are linked to the plant control panels via interface units. Signals between control panels and field devices are of digital and analogue types.
The digital inputs and outputs are distinct conditions such as on/off, high/low, etc., such as may be used to switch plant on or monitor it for status, failure, etc.
The sensors are installed to monitor conditions in various parts of the relevant system so that the pre-programmed conditions(set-points) can be maintained and the system status monitored.
The BMS controls the system conditions by opening and closing valves, or modulating them, to maintain the set-points from data received from the sensors or by operator input.
The field mounted sensors are located as detailed in the associated record drawings.
The analogue inputs record variable signals such as may be received from temperature and flow sensors. Similarly, analogue outputs are used to provide variable control such as to modulate a valve.
Procedure to Start Building Management Software
Login Instructions
Double Click on ‘BMS Software’ on desktop. A Login Page will appear. Input the username and password. Then click login.
Operation of Building Management System
After login operation main page will appear.
Normal Operation
The operating software installed in the system provides control and monitoring of the building services and ancillary systems.
The operation of the BMS is primarily automatic and the system is configured to operate as described in the detailed descriptions of operations. The programming is carried out before and during commissioning and requires no additional input by the user to achieve the specified operation.
There are however functions which the user will require access to, such as acknowledging and responding to alarms, overriding time schedules, etc. User interfacing is achieved via the operators stations(PC) or portable laptop computers connected to the system at selected points. The functionality available to a particular operator is determined by system access levels which are specified by the system administrator.
Operating strategy and access limitations are beyond the scope of this manual and should be determined by the system administrator. The software contains a ‘Help’ feature which is accessed in the normal way. The software-operating manual should be referred to for information on general operation and for setting access levels, etc.
You will see different toolbars on the right side of page are:
Alarm Acknowledge
Alarm Summery
HVAC System
Trends
Navigation
Search
Command
Back
Forward
Alarm Acknowledge
Different alarms pop out like pressure imbalance, fault in running equipment. User can acknowledge the alarm by clicking on the alarm appeared on the screen.
- Alarm Summery
Alarm summery is the details of alarm for what alarm came, in which area fault occurred every single detail user can view in alarm summery.
- HVAC System
In HVAC System user can look to the HVAC system current status in the room where BMS sensors are located and the environment near the PC where BMS is installed.
- Trends
Trend is the current status charts of any room or any equipment whose control and monitoring(Like Temperature Status, Pressure status, Humidity) is done by the BMS software.
- Navigation
In Navigation user can view each and every equipment and room controlled and monitored to the BMS in a single click.
- Search
In search user will get a past report and trend.
- Command
In command user can switch on switch off any equipment, here user can generate a manual report keeping the system work in manual mode
Operation
The BMS is programmed to operate the plant at desired set points at managed hours.
The BMS Panels have TEST/OFF/AUTO Control mode selection switches installed which provides the following controls selections.
Manual Operation
Test Mode
The'Test' position on the selector switch is provided for out of normal automatic control provided all safety interlocks are satisfied. When selected to Test equipment manually selected via selector switch.
The speed control of plant with inverters/speed controller is carried out at the respective inverter/speed controller.
OFF Mode
When the plant is selected ‘OFF’ on the selector switches the plant stops. If the ‘OFF’ position is selected whilst the plant is running under automatic control, the plant shuts down.
Auto Mode
When all the selector switches are in their'Auto' positions the plant operates automatically.
Maintenance of Building Management System
General
· Isolate Supply electrically to allow maintenance and repairs to be carried out.
· Maintenance must be done by competent person.
· Use PPEs before start any maintenance.
· Maintenance Work will be done as per the requirement.
Building Management System
Maintenance and service work will be carried out by the Client’s nominated specialist and will cover the BMS equipment with checks and service of system performance over a defined schedule.
A written report shall be issued following each visit.
The following'Maintenance Notes' are generic and are intended as a guide to the general care and attention required to maintain the system performance.
The Maintenance Method Statement' outlines routine maintenance and service back up to be provided, and is appended herein
Generally very little maintenance is required on the components of the BMS system(see below); however,
The systems being controlled and monitored require routine maintenance and this should include confirmation that relevant sensors, valves, etc. are functioning correctly.
A routine should be established for backing up and recording data generated by the system to a level determined by the building management team.
Maintenance Notes
All control settings should initially be checked and noted. This includes not only set points but also differentials, proportional bands, authorities, integral times, etc. This will then give a record of the original settings for future checking purposes, and will be invaluable if any settings are later accidentally disturbed.
It should be appreciated that control systems can be very complex. Adjustment of settings without a full appreciation of the implications can result in serious limitations in the control ability of the system. Therefore any re-adjustments of corrections of fault should only be dealt with by the controls specialist.
When a temperature sensing bulb or probe is located in a pocket and is therefore not directly in contact with the medium it is monitoring it must be ensured that the bulb is not insulated by a build-up of dirt on a direct sensing probe as this can act as an insulator, therefore these must be kept clean.
Ensure that all control setting knobs are as tamper-proof as possible by keeping all covers securely in place, utilising any locking devices provided, or where possible by the removal of the knob on unprotected instruments.
A sensing bulb that has been dented, bent, or damaged should be immediately replaced as even if it seems to operate correctly its calibration will probably be out.
Essential System Checks
Terminal and Peripheral Checks
Operate comprehensive diagnostics software on the BMS software that will produce a full system report on the current status of the operating BMS software.
Analyse this system fault report log file together with current point and index files listed in the schedules, in order to anticipate errors that could cause unpredictable results.
Carry out software checks to ensure that all the fitted facilities are functional, secure, and operational and will run properly when required.
Perform diagnostic and configuration checks to the operator terminals and associated workstations, printers, line drivers and modems as listed within the Schedule of Equipment and Services. This will reduce the chances of hardware failure which could cause intermittent or permanent shut down of the system.
Compile a full system file backup by the end of the visit for the purpose of archiving and to protect against disaster in the event of terminal failure.
Check each operator terminal and the operation of each of the function keys on its keyboard to ensure that correct operation is maintained.
Clean the operator peripherals listed in the schedules to maintain adequate airflow. Over-heating of power supplies or other critical components can cause system failure.
Check and synchronise time and date throughout the system
Outstations and Network Interface Units
Check the integrity of the Outstations and system Network Interface Units listed in the schedules, to prove their satisfactory operation individually and as a network.
Check operation of all remote node connections for use with a portable BMS terminal and check the corresponding operation.
Check the outstation firmware in order to establish that the correct files are present and to ensure that the correct operation is maintained.
Check the communication statistics for each Outstation and Network Interface Unit for any unusually high values that may affect the overall system operation.
Check the integrity of reserve power supplies, battery connections and battery backup where installed to ensure these operate in the event of a power failure.
Check that the individual voltages at the outstation power supply unit are within the required tolerance. Voltages affect the UNC's ability to function within their designed parameters.
Check the operation and functionality of all keypads.
Reports
A BMS Terminal Check Sheet will be issued on each visit and will summarise all items checked. This report will also identify all current software including the release number associated with each terminal.
An Outstation Check List will be issued on each visit and will identify outstation or node number, power supply readings, communication statistics, firmware version, and number of points.
A full report will identify all faults highlighted through the respective hardware and software diagnostics including minor faults that will have been corrected. Any major faults will be identified separately for correction, with advice where required on the corrective action necessary.
Control
Carry out a visual inspection of the MCCs. If any malfunctions have occurred investigate and correct the cause. Carry out lamp test and replace any defective lamps.
Ancillary
Computer equipment, printers, power supplies, etc. should be kept clean and generally maintained in accordance with the manufacturers' instructions.
Computer screens should be periodically cleaned with a proprietary cleaner and keyboards should be protected from the ingress of dirt and small objects, e.g. staples, etc.