ABB DriveIT ACH550-UH - Page 99

ACH550-UH User’s Manual 99
Start-Up
3018 COMM FAULT FUNC 0…3 1 0
Defines the drive response if the fieldbus communication is lost.
0 = NOT SEL – No response.
1 =
FAULT – Displays a fault (28, SERIAL 1 ERR) and the drive coasts to stop.
2 =
CONST SP7 – Displays a warning (2005, IO COMM) and sets speed using 1208 CONST SPEED 7. This “alarm speed”
remains active until the fieldbus writes a new reference value.
3 = LAST SPEED – Displays a warning (2005, IO COMM) and sets speed using the last operating level. This value is the
average speed over the last 10 seconds. This “alarm speed” remains active until the fieldbus writes a new
reference value.
Caution: If you select const speed 7, or last speed, make sure that continued operation is safe when fieldbus
communication is lost.
3019 COMM FAULT TIME 0.0…60.0 s 0.1 s 10.0 s
Sets the communication fault time used with 3018
COMM FAULT FUNC.
• Brief interruptions in the fieldbus communication are not treated as faults if they are less than the
COMM FAULT TIME
value.
3021 AI1 FAULT LIMIT 0.0…100.0% 0.1% 0.0%
Sets a fault level for analog input 1. See 3001
AI<MIN FUNCTION.
3022 AI2 FAULT LIMIT 0.0…100.0% 0.1% 0.0%
Sets a fault level for analog input 2. See 3001 AI<MIN FUNCTION.
Group 30: Fault Functions
Code Description Range Resolution Default S