INSTALLATION OF HPAC UNITS
Contents
1. pde PD ELECTRONICS HIROBUS CABLING 2 EMC Electromagnetic Compatibility W hat is it and how can it influence the system disturbances and to minimise the emission of disturbances from inside Liebert Hiross air conditioners are tested by a Competent Body an air conditioner sample with normal configuration is checked under electromagnetic disturbances and it has to overtake the tests otherwise the units cannot be sold in the European market and in those markets where the CE mark is required Looking at the specific controls Liebert Hiross Miqoface is judged by the Competent Body immune from disturbances conducted into the main power supply up to 4 KV These disturbances are characterised by high voltage and low energy and Microface is not normally damaged by them However disturbances stronger than the tested ones can influence the behaviour of the control in the following ways Mc or detromagneic compatibility is the capability of the system to resist against external e Fluctuation of temperature on those units where the PTC sensor is installed e Unit self reset e Unit shutdown e False alarm generation The generation of spikes disturbances is something typical of switching systems frequency converters triac controllers inductive loads UPSs diesel generators and if they do not work according to the levels defined by European standards the same we use to test our units EN50081 1 EN50082 2 they could in2. and 1 could be used for network reset The Network Reset Pin is not managed by the control and in normal conditions it does not have any influence on the system However in disturbed environments the presence of this pin could influence the stability of the Microface Hiromatic system Therefore only in those peculiar cases of anomalies in installations where everything is done according to the instructions given in this G uide we indicate the possibility to remove the pin n 3 from all the Hirobus cables on both ends present in the network Such operation needs a very skilful technicians and a special care to check that no Hirobus cable in the system is left with that unused pin Example of Hirobus wiring 15 pin Wire not connected 2 pi ND aa 4 5 communication 6 communication this a 7 communicatio Hirobus 6 wires cable 8 pole multiplug 8 pole multiplug g view to the contacts backside 87 pin Wire not connected 11
3. IC BACKSIDE To Display 4 wires flat cable MICROFACE or MICROFACE E o had Kad badd m Uo OT S Ferrite POWER SUPPLY MODULE PSM Microface to Microface D isplay Microface to Microface LAN Microface to accessories Microface to Hiromatic G Microface to PSM PSM to Hiromatic G on a oe be PD ELECTRONICS HIROBUS CABLING CONNECTION Sexisting in a HIROBUSCABLE TYPE CONNECTOR Microface Hiromatic system 1 Microface Display to 4 wires flat cable RJ9 Connector with 4 poles 4 Microface positions 4 contacs 2 Microface to Microface 6 wires screened flat cable RJ45 Connector with 8 poles 8 LAN positions 8 contacts with 2 poles on the sides not used 3 accessories 8 wires flat cable it must be screened RJ45 Connector with 8 poles 8 Humitemp Hirosensor2T and connected to the Earth if the positions 8 contacts and EEAP sensors sensor is positioned outside the unit 4 Microface to Hiromatic 8 wires flat cable RJ45 Connector with 8 poles 8 built on the unit positions 8 contacts 5 Microface to PSM Power 6 wires screened flat cable RJ45 Connector with 8 poles 8 supply module inside the positions 8 contacts with 2 Hiromatic box therefore poles on the sides not used Microface to Hiromatic box 6 PSM to Hiromatic already 8 wires flat cable RJ45 Connector with 8 poles 8 connected in the Hiromatic positions 8 contacts B
4. ITCH Please follow the path indicated in the manual delivered with the unit The power cables and Hirobus have to be kept at distance following different paths PD ELECTRONICS HIROBUS CABLING 6 Outgoing cables All cables coming out of the unit have to be screened and the screen has to be connected to an earth terminal O utgoing cables are 1 Alarm relay cable 2 Remote on off cable 3 Fire shut down cable 4 Compressor status fan status electrical heater status cables 7 Duplication of external contacts All contacts which are coming from outside like the Remote on off User input Fire shut down contacts have to be connected to inside the unit The relay is then connected to the relevant input All relays have to be fitted with gold contacts Wiring example R1 Air conditioner 10 PD ELECTRONICS HIROBUS CABLING 8 RC filters installation RC filters need to be installed on coils and conductors especially for those components which are frequently activated like fill drain valves electrical heaters contactors etc Such installation is in most cases carried out in the factory but in case of disturbances on the control system we suggest to check whether the unit components are equipped with RC or not Example of RC installation RC Filter Contactor 9 Special Intervention Hirobus cables have 6 wires 4 of which are used for communication 1 is used to signal ground
5. PD ELECTRONICS CABLING Volume INSTALLATION OF HPAC UNITS Cabling general overview in order to improve the EMC INDEX OF CHAPTER 1 Hirobus Cabling 2 2 EMC ELECTROMAGNETIC 4422 3 3 HIROBUS CABLE INSTALLATION csssssssssssssssssscssssssssssssessecsnecssccenscesnccssceess 4 4 HOW TO MAKE A NETWORK WITH HIROBUS 44 0 6 5 SCREENED POWER SUPPLY CABLE u sssssssssssssssssssecssssssssensscsnssssccenscessccsseeess 9 JOWTGOINGCABE ES 10 7 DUPLICATION OF EXTERNAL CONTACTS ccssssssssscssscssssssscssscssnscesscssscssees 10 8 RC FILTERS INSTALLATION ssssssscsssssssssssesssssessesssccssscsnsesssccssscsnscesscesscesses 11 9 SPECIAL INTER VENTION 11 PD ELECTRONICS HIROBUS CABLING Chapter 1 Introduction This chapter has been produced to give technical guidelines on how to make a good installation of a Hirobus network with special attention to the wiring connections The information contained in this checklist is a mere complementing tool for the engineer whose responsibility is to design and install the system his personal qualification implies the capacity to set up installations in accordance with the norms and laws of the country in which he operates This document will be kept updated in the Web site www hiross it
6. fluence our control systems H ow to solve the problen The best solution would be to limit the problem at the source but this is in most cases impossible The alternative is to avoid the disturbance to affect our unit through extemal connections and or the power supply cable In particular what follows is a list of mandatory rules to respect HIROBUS CABLE Ww Ww PD ELECTRONICS HIROBUS CABLING 3 Hirobus cable installation Hirobus cables used to interconnect up to 16 Microface or 8 when there is a connection to Hirolink need to be screened and installed according to the instructions given in the user manual for example see Microface amp Hiromatic AC WXG160 cod 271618 272038 rev 19 10 1999 It has to be a cable type connector TVK 0067 screened or equivalent and the connector type must be an 8 poles RJ45 Modular Jack Interconnection system with only the central 6 poles connected IS NOT ALLOWED TO CUT thecbleand JOIN it with TERMINALS The cable has to be 1 piece only from connector A to connector Example of installation ma Ga a Hirobus 8 wires Max 10 m otherwise PSM TILIL Hirobus 6 wires needed Max Total cables lenght from 15 Microface to Hiromatic 300 mt Example of installation wiring POWER CABLE PATH lt Please follow the path indicated in the manual delivered with the unit The cable must be SCREENED The screen of the cable mu
7. nectors MM 275636 8 wires screened flat cable connectors MM 275642 8 wires screened flat cable connectors MM The codes for the loose cables connectors and tools are Deseripte 1 275625 6 wires screened flat cable 2 275626 8 wires screened flat cable 3 275612 8 poles connector 4 275641 Clamping tool for 4 poles 6 poles 5 275613 Clamping tool for 8 poles PD ELECTRONICS HIROBUS CABLING 5 Screened power supply cable Power cables can be of different sizes the size does not depend only on the absorbed power but also on the distance between the distribution panel and the unit itself In addition to that the power cable is in most cases double insulated which makes the positioning and handling inside the unit even more difficult For those installations where there is a big power supply cable it is necessary to use an external junction box to interface the cable coming from the Main Distribution Panel and going into the Main disconnector switch The following examples are referring so some kind of unit installations in order to give some general guidelines Installations can also be different to the ones shown depending on the type of units considered Examples of installation POWERCABLE lt The cable must be SCREENED The screen of the cable must be CONNECTED TO EARTH EXTERNAL INSULATION The cable extemal insulation must be 127 POWER CABLE PATH SW
8. ox N B All cables not staying inside the unit must be screened All screened cables must be connected to Earth on both sides WARNING please note that a wrong connection could cause serious problems to the electronic devices Microface and Hiromatic for this reason we strongly recommend you to use only first quality products or to buy the cables directly from Liebert Hiross set sizes or loose cables and connectors are available as well as building tools 4 WIRES HIROBUS CABLE WITH 4 POLES CONNECTORS Microface Display to Microface the max length possible is 450 mm lt POLES MODULAR FOUR WIRES FLAT CABLE Standard cable with Microface Displa Part number Length 275598 4 wires cable with 4 poles connector ferrite PD ELECTRONICS HIROBUS CABLING 6 WIRES HIRO BUS CABLE WITH 8 amp POLESCONNECTORS EIGHT POLES MODULAR JACK USE ONLY THE SIX WIRES SCREENED FLAT CENTRAL SIX POLES CABLE 275647 3m 6 wires screened flat cable connectors MM 6 wires screened flat cable connectors MM 6 wires screened flat cable connectors MM 6 wires screened flat cable connectors MM 8 WIRES HIROBUS CABLE WITH amp POLES CONNECTORS EIGHT WIRES FLAT CABLE FIGHT POLES MODULAR USE SCREENED CABLE WHEN CABLE IS RUNNING OUTSIDE THE UNIT OR IN CASE OF TROUBLES MENTIONED IN PAG 3 Part number 275607 3m 8 wires flat cable connectors MM only inside unit 275635 8 wires screened flat cable con
9. st HIROBUS PATH be DIRECTLY The power cables and CONNECTED WITH THE Hirobus have to be kept at ELECTRICAL PANEL distance following PLATE EARTH different paths PD ELECTRONICS HIROBUS CABLING The maximum cable length between the first Microface and the last Microface or Hiromatic has to be of 300 meters maximum The cables between the units have to be positioned not in the same channels of switching exchange cables or power cables and they have to run far away from any cable which could generate disturbances The recommended solution is to install the Hirobus cable inside screened channel it can be simply a metal pipe Obviously it cannot be the one containing other cables like the switching exchange cable or power cables because they represent one of the major disturbances sources mentioned at page 3 PD ELECTRONICS HIROBUS CABLING 4 How to make a network with Hirobus Hirobus networks between Microfaces LAN are built with 6 wires cables 8 wires cables are used to connect sensors Humitemp EEAP and Hirosensor 2T and Hiromatic to Microface or to a PSM the Power Supply Module is needed when Hiromatic is required at a distance from Microface higher than 10 mt In this case you should consider the Hiromatic remote box which contains the PSM The connection Microface PSM is with 6 wires Cable while inside the box the connection PSM Hiromatic is realised with an 8 wires cable Example of connections HIROMAT
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