Operation and setting
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TGH1361en/11.2009
5.6 Menu COM SETUP: Setting the BMS interface
5.6.1 Bus address „Addr:“ (IRDH275B)
This menu item is used to set the BMS bus address of the IRDH275. Since
there are several A-ISOMETERs in one system, take care that the bus address
is not assigned twice.
The device is factory set to address 3 and hence acts as a slave.
5.6.2 ISOnet function (IRDH275B)
In the ISOnet = ON sub menu of the COM SETUP, the ISOnet function can
be set. The ISOnet function of all A-ISOMETERs existing in the system must
be in "ON" position.
A BMS Master with the ISOnet function activated, controls the ISOnet slave
devices via the BMS bus. If an A-ISOMETER® has completed the measuring
cycle, the permission for insulation measurement is given from the ISOnet
Master to the next slave. During the measurement process carried out by an
A-ISOMETER®, all other A-ISOMETERs® are in the STANDBY mode.
5.6.3 ISO monitor (IRDH275B)
This function allows to query the current measured value as well as the mes-
sages of all bus-capable A-ISOMETERs existing in the BMS network. After se-
lecting the bus address, the entire information stored by the selected device
is indicated on the display. The display indication is structured similar to the
standard indication, but instead of the indication of the measuring pulse, the
selected bus address is indicated. Without pressing a key, the indication
changes to the standard indication of the IRDH275B after about five minutes.
If there is no information available from the selected A-ISOMETER®, the
message "!!!!NO DATA!!!!" will be displayed.
Information is being searched
No data found
Current data address 03
If several IRDH275 are operated on one BMS bus, the addresses of other
A-ISOMETERs must be assigned one after the other, since only one de-
vice may represent the Master.
<<Bus SCANNING>>
R= K ADR:02
!!!!NO DATA!!!!
R= K ADR:02
Insulation Fault
R= 010K ADR:03
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