Installation RMS621
12 Endress+Hauser
3.2.1 Installing extension cards
You can equip the device with various extension cards. A maximum of three slots are available in
the device for this. The slots for the extension cards are marked with B, C and D (→ Fig. 5) on the
device.
1. Make sure that the device is not connected to the power supply when installing and removing
an extension card.
2. Remove the blanking cover from the slot (B, C or D) of the basic unit by pressing together the
catches on the bottom of the Energy Manager (see Fig. 5, item 2), while at the same time
pressing in the catch on the rear of the housing (e.g. with a screwdriver) (see Fig. 5, item 1).
Now you can pull the blanking cover up out of the basic unit.
3. Insert the extension card into the basic unit from above. The extension card is not correctly
installed until the catches on the bottom and rear of the device (see Fig. 5, items 1 and 2) lock
into place. Ensure that the input terminals of the extension card are on top and the connection
terminals are pointing to the front, as with the basic unit.
4. The device automatically recognises the new extension card once the device has been
corrected wired and has been commissioned (see ’Commissioning’ Section).
!
Note!
If you remove an extension card and do not replace it with another card, you must seal the empty
slot with a blanking cover.
Fig. 5: Installing an extension card (example)
Item 1: catch on the rear of the device
Item 2: catches on the bottom of the device
Items A - E: identifier for slot assignment
3.3 Post-installation check
When using extension cards, ensure that the cards are sitting correctly in the device slots.
!
Note!
When using the device as a heat counter, observe the installation instructions EN 1434 Part 6 when
mounting the device. This also includes the installation of the flow and temperature sensors.
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