Appendix E: Upgrading - Siemens HydroRanger 200 HMI Operating Instructions Manual

Appendix E: Upgrading

The following procedure will assist you if you are upgrading from a MultiRanger Plus or
HydroRanger 200 to a HydroRanger 200 HMI.
If the application is unchanged, copy the parameters in the MultiRanger Plus or
HydroRanger 200 before de-commissioning the unit.
Mounting a HydroRanger 200 HMI
Please read the section on
1. Turn OFF the MultiRanger Plus or HydroRanger 200.
2. Disconnect and label all cables from the terminal blocks.
3. Remove the enclosure from the wall and pull all cables through the conduit entries.
4. Install the new HydroRanger 200 HMI on the same mounting holes used by the
MultiRanger Plus or HydroRanger 200.
5. Feed all cables through the conduit entries.
6. Connect all cables to the appropriate terminal block on HydroRanger 200 HMI.
Connecting the transducer
Unlike in the MultiRanger Plus, co-axial cable is not recommended for use
Important:
with the HydroRanger 200 HMI for transducer cable extensions. The HydroRanger 200
HMI circuit is designed to use shielded twisted pair cable. Ideally, the co-axial cable
should be replaced with twisted pair.
If this is not practical, please refer to the section below.
Co-axial transducer extension
The HydroRanger 200 HMI uses a differential input receiver that works either directly
connected to the transducer lead, or with a screened twisted pair extension cable via a
field junction box. This arrangement, using two conductors and a screen, gives
considerably better electrical noise immunity than the previous co-axial arrangement (up
to 20 dB). It gives a more reliable operation in applications where the proximity of power
cables, variable speed drives, etc. would have caused problems.
If you are installing a new HydroRanger 200 HMI system and an extension is required, we
strongly recommend that you use a good quality screened, twisted pair cable. If the
integral transducer cable is used, you only need to connect the HydroRanger 200 HMI
and benefit from its superior performance.
Page 278 HydroRanger 200 HMI – OPERATING INSTRUCTIONS
Installing and mounting
on page 8, then follow these steps:
Transducer
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