GMC-I Messtechnik GmbH
R2700–53
Replacement with regard to B and C features:
•
Features B1 through B5 are identical for both devices.
•
Features C1 and C2 for the R2600 are feature C1 for the R2700.
•
Feature C3 cannot be replaced with the R2600.
•
Feature C4 for the R2600 is feature C2 for the R2700.
The following functions cannot be replaced:
•
Position acknowledgement display for step-action controller (R2600, feature A4 does not exist). Step-action controller function is available.
•
Feature B5 cannot be replaced with the R2600.
•
24 V AC auxiliary power (R2600, feature C3) not possibile.
•
The bus interface cannot be switched to RS 232 operation.
The following rewiring is required:
•
The connector terminals on the R2600 can still be used, because the pin assignments are identical except for a few exceptions. The two plug
connectors can be pulled out after loosening the lacquered screws.
•
Terminals 20 and 21 at the RS 485 bus interface have to be reversed.
Converting Parameters
In the case of the R2700, the proportional bands are specified in the unit of measure of the controlled variable, instead of as a percentage of the
measuring range span as is the case with the R2600. Conversion is accomplished as follows: Pb (R2700) = Pb (R2600) x MRS (R2600) / 100%.
Attention!
!
To ensure radio interference suppression, the protective conductor and/or control cabinet grounding
must
be connected to terminal 18.
Summary of Contents for R2700
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