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N2 Protocol Technical Data

The following diagram shows the drives’ integration to the Johnson Controls

Metasys Companion system.

On the N2 Fieldbus each ACH550 drive can be accessed by the full complement of

Metasys FMS features, including Change-of-State (COS) monitoring, alarm

notification, scheduling, trend, and totalization.

On one N2 Fieldbus segment there can be up to 32 nodes while integrating ACH550

drives with Johnson Controls Metasys.

Drive Device Type

For the Metasys and Metasys Companion products, the device type for the ACH550

drive is VND.

N2 Analog Input Objects

The following table lists the N2 Analog Input objects defined for the ACH550 drive.

N2 Analog Inputs:

Number Object

Drive

Parameter

Scale

Factor

Units Range

AI1 OUTPUT FREQUENCY 0103 10 Hz 0…250

AI2 RATED SPEED Note 1 10 % 0 …100

AI3 SPEED 0102 1 rpm 0 …9999

AI4 CURRENT 0104 10 A 0…9999

AI5 TORQUE 0105 10 % -200…200

AI6 POWER 0106 10 kW 0…9999

AI7 DRIVE TEMPERATURE 0110 10

°C0 …125

AI8 KILOWATT HOURS 0115 1 kWh 0…9999

PC-Version

Converter

Panel Version/LTD

N2 Fieldbus

PC Version

Panel Version/LTD

RS232 -RS485 Converter

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ABB ACH550 Bedienungsanleitung Seite 41