Instruction/ maintenance manual of the product FT-10 Bacharach
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1 of 18 3015-4568 Revision 0 9/11/03 Installation Guide Bacharach HGM300 to LonWorks FT-10 Communications Adapter Introduction The Bacharach HGM300 to LonWorks Comm unications Adapter enables an HGM300 Refrigerant Monitor to communicate with a LonWorks FT-10 Free Topology network.
2 of 18 front side of the door. Position the adap ter board over the s tandoffs mounted on the HGM door. Install the five remaining 6- 32 screws through the board and into the standoffs and tighten. Connect power wiring from the HGM300’s 120V Auxiliary Power term inal block to the adapter board’s POWER terminal block.
3 of 18 If an RDM800 remote display IS to be used w ith the adapter, refer to Figure 3 for wiring details. Note that when the RDM800 is used, TWO RS-485 cables must be run betw een the HGM300 and RDM800, so plan accordingly.
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5 of 18 Setting HGM Communication Address On Adapter See Figure 4 for the location of adapter dipswitch ‘A’. Switches 5-8 on the adapter’s ‘A ’ dipswitch are used to matc h the node address set on the HGM’s address dipswitch (on HGM main boa rd).
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7 of 18 Configuring the HGM300 with RDM800 or Laptop PC The only HGM parameters that are cha ngeable through LonWorks are the alarm thresholds. Configuring the HGM for refriger ant type and length of tubing for each zone (zero length to disable a zone ) must be done with the RDM800 remote display or a laptop PC.
8 of 18 HGM Alarm Acknowledge Options Two alarm acknowledge options are s upported—Auto Acknowledge and Network Acknowledge. In the Auto Acknowledge mode, the HGM will clear its alarm outputs the next tim e the alarmed zone is sampled and its PP M has dropped below the alarm thresholds.
9 of 18 LonWorks Objects and Network Variables The adapter contains one Node Object, sixteen Zone Objects, one Ge neral Status Object, and one Alarm Control Object.
10 of 18 Network output variable nvoStatus returns the information requested by nviRequest. The status response will indicate the status of the object that received the request. The status bits supported are list ed above under RQ_REPORT_MASK. One nvoStatus response will be returned for each nviRequest.
11 of 18 Objects 1-16 – Zone Objects There is one Zone Object for each sampling zone in the HGM300 (16 total): Network output variable nvoHgmZonePPM shows the m easured gas concentration for a particular zone.
12 of 18 CRITICAL FAULT Some critical fault pr events normal zone PPM m easurement. (View nvoHgmFaults for details on fault type) HGM BUSY Occurs with RDM800 insta lled when certain scr eens are displayed. COMM FAULT 1 Comm failure between HGM and adapter.
13 of 18 Object 17 – General Status Objec t The General Status Object provides info rmation about any HGM300 internal faults present and shows which zone is currently being sampled: Network output variable nvoHgmFaultAlert reports whenever ANY fault is detected within the HGM or adapter.
14 of 18 HGM Busy (if RDM800 attached a nd showing certain screens)(bit 4) Comm Fault 1 (communications fail ed between HGM and adapter)(bit 3) Comm Fault 2 (internal communicati ons failed within ada.
15 of 18 Object 18 – Alarm Control Object The Alarm Control Object provides information about any alarm s which are present in the HGM. It also provides mechanisms fo r acknowledging alarm s, and fo.
16 of 18 Network input variable nviSetZoneThresh allows Leak, Spill, and Eva cuate alarm thresholds (in PPM) to be set for each m onitoring zone. nviSetZoneThresh has four parameters to be set by the .
17 of 18 Network output variable nvoHgmZoneThresh displays the following in formation for the zone specified by nviGetZoneThresh: 1. Zone (1-16) whose alarm th resholds are being displayed 2. Leak Alarm Threshold in PPM (0-65535) 3. Spill Alarm Threshold in PPM (0-65535) 4.
18 of 18 LED 1 and LED 2 will normally show activ ity about every 15 seconds. Since the refrigerant monitoring process is fairly slow and new data is only available every 15 seconds or so, the adapter po lls the HGM at a slow rate to reduce the com munications burden on the HGM main processor.
An important point after buying a device Bacharach FT-10 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bacharach FT-10 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bacharach FT-10 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bacharach FT-10 you will learn all the available features of the product, as well as information on its operation. The information that you get Bacharach FT-10 will certainly help you make a decision on the purchase.
If you already are a holder of Bacharach FT-10, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bacharach FT-10.
However, one of the most important roles played by the user manual is to help in solving problems with Bacharach FT-10. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bacharach FT-10 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
