ABB REL 551-C1*2.5

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128

Serial communication Chapter 9

Data communication

Table 135: Measurands

Table 136: Interoperability, physical layer

245 General interrogation on generic data No

248 Write entry No

249 Write entry with confirmation No

250 Write entry with execution No

251 Write entry abort No

Measurand Rated value

1.2 2.4

Current L1 Yes

Current L2 Yes

Current L3 Yes

Voltage L1-E Yes

Voltage L2-E Yes

Voltage L3-E Yes

Voltage L1 -L2 Yes

Active power P Yes

Reactive power Q Yes

Supported

Electrical Interface

EIA RS485 NoYes

number of loads No4

Optical Interface

glass fibre Yes

plastic Yes

Transmission Speed

9600 bit/s Yes

19200 bit/s Yes

Link Layer

DFC-bit used Yes

Connectors

connector F-SMA No

connector BFOC2, 5 Yes

ABB REL 551-C1*2.5 - Page 137