Badger Meter SRD/SRI Valve Positioners - Manual (Page 67)

MAINTENANCE
General
The SRD991 requires no periodical maintenance When replacing components during repair work, “Safety Requirements” must
be observed!
Service Plug and IrCom
All basic instruments of the SRD991 are equipped with a service plug There via RS232 a PC with FDT/DTM Software can be
connected via modem EDC82 (galv separated, not Ex)
This universal interface, together with the PC software, allows the configuration of all SRD991 versions independent of the
protocol Thus, versions HART, FOUNDATION Fieldbus, PROFIBUS PA, FoxCom and also the version “without communication”
can be configured from the PC, without having to acquire expensive modems For details see TI to EDC82
The service plug (IDC connector) is accessible, if the cover A is pushed to the side
The connector links EDC82 modem with SRD, and from EDC82 a 9 pole subD cable links to RS232 interface of PC
Figure 24: Service plug
If the SRD is equipped with option “IrCom” B , communication can take place contactless via infrared with the positioner (even
with closed cover!) Modem “IR Interface” (not Ex) is connected via RS232 to a PC (for practical reasons a notebook) with FDT/
DTM software in a range of approx 1 m (If the notebook has an IrDa interface, this cannot be used, despite similar technique
The IrDa instruction set has no communication instructions for positioners -)
Supply Filter Replacement
An obstructed supply filter can be replaced Unscrew the air supply fitting, remove the filter and exchange the filter with a
new one
Removing the Electronics Unit*
* On SRD991 with ‘pressure sensors’ option, see “Built-in Pressure Sensors”
TO AVOID ANY PERSONAL INJURY RESULTING FROM BURSTING OF PARTS, TAKE OFF AIR SUPPLY BEFORE ANY
REMOVAL OF ELECTRONIC BOARD.
Pull off the travel indicator 12 To remove the electronics unit 40, loosen the 7 screws on the front
Lift the electronic vertically upward
Maintenance
Page 67 August 2014 POS-UM-00010-EN-03