ITT Hydrovar - Ramp Settings for Speed Control

49
Programming
RA: Ramp F
min
acceleration Actual Value
RD: Ramp F
min
deceleration Output Frequency
R1: Ramp 1 – speed ramp fast increase
R2: Ramp 2 – speed ramp fast decrease
R3: Ramp 3 – speed ramp slow increase
R4: Ramp 4 – speed ramp slow decrease
0215
0215 RAMP 1
Ramp 1: Fast acceleration time
4 sec
Possible settings: 1 – 250 (1000) sec
• Rapid acceleration may cause an error (OVERLOAD) during drive startup.
• Slow acceleration may cause a drop in outgoing pressure during startup.
0220
0220 RAMP 2
Ramp 2: Fast acceleration time
4 sec
Possible settings: 1 – 250 (1000) sec
• Rapid deceleration may cause error (OVERVOLTAGE).
• Slow deceleration may generate over pressure.
0225
0225 RAMP 3
Ramp 3: Slow acceleration time
70 sec
Possible settings: 1 – 1000 sec
• Rapid acceleration may lead to oscillation and/or an error (OVERLOAD).
• Slow acceleration may cause a drop in outgoing pressure during varying demand.
set rated REQUIRED VALUE [02]
MIN FREQ [0250]
FMIN TIME [0260]
Time
RA
R3
R1
R3
R3
R3
R4 R4 R4
R4
R2
RD
Set HYSTERESIS [0315] in %
Set HYSTERESIS [0315] in %
WINDOW [0310]
setting in % of
the required
G
G
G