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Dispatching engineering systems. Sauter

Dispatching engineering systems

Recently, a partner invited us to inspect an object to evaluate a technical and commercial proposal. The subject of the assessment was the dispatching of the existing engineering systems of a residential building. There was a trip to a real object located in Moscow. The management of the facility is tired of fighting with local automation schemes and they confidently need a dispatching system.
It all started with a meeting at which the Customer explained what he would like to have as a result. And the wishes were as follows:
1) it is necessary to create an operator's workplace - an operator's workstation - with a certain set of video frames, trends, tables of violations and events. The Customer does not understand the brands of SCADA systems and the only criterion for evaluating a SCADA system is only its cost;
2) tie a network of several heat and electric meters;
3) get remote control over 2 of 6 ventilation systems;
4) manage automated process control systems in an individual heat point
Heat metering unit Teplosfera

Teploschetchik

Heat metering unit Teplosphere

Sauter 

Sauter nova220

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Sauter EY3600

The task is made more difficult by the fact that:
1) The customer wants to keep the existing systems and controllers, because, according to him, they work flawlessly, for example, two SAUTER PLCs are located in the IHP (individual heat point); 2) the pump control cabinet is partially destroyed - the thermal protection has been removed, so this cabinet will automatically have to be sorted out with the preparation of the necessary project documentation;
3) customer is not satisfied with Grundfos cold water management system, because does not provide time-based operation of two pumps. The customer himself offered to change Grundfos for PLC OWEN + monochrome panel.

3.jpg

The conclusion suggests itself - either refuse to work, or include in the cost of replacing equipment.
What we have in the dry residue:
1) you need to purchase 100 - 200 m of twisted pair UTP-5;
2) buy 3 panels IP-320 OWEN;
3) purchase 3 PLC-110 OWEN, possibly more I/O modules;
4) carry out a preliminary (draft) design of 4 cabinets and make electrical circuit diagrams;
5) program 3 controllers and 3 panels for relatively understandable algorithms for the operation of a heat point;
6) deal with the interface part of heat meters for integration with the SCADA system;
7) install cable lines (lay Ethernet);
8) to purchase a computer, keyboard, mouse and other components, deliver all this to the site;
9) sort out (make installation) of new equipment in 3 cabinets;
10) carry out commissioning of the equipment included in the cabinets;
11) agree on the type and composition of video frames in the system;
12) create application software for SCADA system (Masterscad);
13) put the entire system into trial operation.
It's no secret that the object is serviced by the Uniservice company.

There was a conversation with an engineer of this company about how to program their controllers so that they (PLC) transmit information using the Modbus TCP protocol.

This was answered as needed:
– submit a request to receive a commercial offer for making changes to the program code to implement the interface part of the controller;
– buy a gateway (interface converter) NovaNet - Modbus TCP (rather two).
Regarding their dispatching, they immediately said that the purchase of their dispatching systems for such small systems is not profitable, they began to offer some kind of panel.
The obvious fact is that the Customer will never pay more than 200,000 rubles for all work, including equipment, while the Customer complains that he is forced to pay 15,000 rubles to Uniservice for each, even a short visit to the site.

Question: how do you see the fate of this object?

#dispatching, #SCADA, #ModbusTCP, #PLC, #controlcabinet, #controller, #objectautomation, #OWEN, #PCS, #Sauter, #Grundfos, #individualheatpoint, #IHP #Workstation


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