Owner's manual

DECOMMISSIONING
Before decommissioning the unit, disconnect the supply air
and the electrical input signal.
After disconnecting the electrical input signal the last
confirmed configuration of the positioner is preserved in
the memory.
Exchange of Device
If a temporary decommissioning of the SRD and a later
mounting to another actuator has to be carried out, before
disconnecting, we recommend to Reset Configuration in
Menu 9.1. So the default settings ”Ex-Factory” are reactivated.
This facilitates a later recommissioning.
MAINTENANCE
The SRD960 requires no periodical maintenance.
When replacing components during repair work,
“Safety Requirements” on page 66 must be observed!
Service Plug and IrCom
All basic instruments of the SRD960 are equipped with
a service plug A. There via RS232 a PC with PC20 / PC50
(FDT-Software) can be connected via modem EDC82 (galv.
separated, not Ex).
This universal interface, together with the PC software,
allows the configuration of all SRD 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 (6 pole pin strip) is accessible from the side
after unscrewing of cover to electronic compartment. The
6-pole connector links EDC82 modem with SRD, and from
EDC82 a 9 pole subD cable links to RS232 interface of PC.
Figure 39: Service plug and IrCom
If the SRD is equipped with option IrCom B , communication
can take place without contact 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 software PC20 / PC50 and makes possible a
range of approximately 1 meter.
(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.
Pneumatic Amplier
Upon unscrewing of lateral cover, the pneumatic
compartment is accessible.
Figure 40: Single-acting amplifier
• Pre-Amplifier: Unscrew 4 screws K.
• Amplifier: Unscrew 2 screws J.
• When remounting, verify the correct seating of sealings.
Damping Screws (Service Only)
The damping screws are adjusted optimal ex-factory; the
screw head is even with the amplifier surface. Generally this
is the most favorable setting, without damping.
Replacement of Mechanical and Pneumatic
Units
See following pages.
Page 54
Decommissioning
August 2014POS-UM-00009-EN-02