Chapter 6 – Parameters
6-30
ACH 500 Programming Manual
Main 30
Protection Parameters
Group 30.1
Fault Function
These parameter values can be altered with the ACH 500 running. The Range/
Unit column in Table 6-15 shows parameter values. The text following the
table explains parameter values in detail.
Table 6-15 Group 30.1
1 SERIAL FAULT FUNC
This parameter allows you to select the preferred operation in case of a
malfunction in serial communication between Control Interface and Motor
Control Cards.
STOP
The ACH 500 stops according to the setting of Parameter 20.2.3 (Stop
Function).
Parameter
Range/Unit
Description
1 SERIAL FAULT FUNC
STOP/
PRE SPEED7
Operation in case of Serial
Communication fault.
2 AI < MIN FUNCTION
NO/WARNING/
FAULT/
PRE SPEED7/
LAST SPEED
Operation in case of AI <Minimum
fault.
3 MOT TEMP FLT FUNC
NO/WARNING/
FAULT
Operation in case of motor overtemp.
4 MOTOR THERM TIME
20 – 10000s
Time for 63% temperature rise.
5 MOTOR LOAD CURVE
50 – 150%
Motor current maximum limit.
6 ZERO SPEED LOAD
40% - MOTOR
LOAD CURVE
Motor load curve point at zero speed.
7 BREAK POINT
1 Hz – 500 Hz
Break point of motor load curve.
8 STALL FUNCTION
NO/WARNING/
FAULT
Operation in case of motor stall.
9 STALL CURRENT
0 – 1.5 times drive
current rating.
Current limit for Stall protection
logic.
10 STALL TIME/FREQ
10s/15Hz or 20s/
25Hz or 30s/35Hz
Time/Freq limit for Stall protection
logic.
11 UNDERLOAD FUNC
NO/WARNING/
FAULT
Operation in case of Underload fault.
12 UNDERLOAD TIME
0 – 600s
Time limit for Underload logic.
13 UNDERLOAD CURVE
1 – 5
Torque limit for Underload logic.
