DMG JUNIOR 4.0 - High Speed Phase Adjustments; Stopping Phase Adjustments

User
Manual
File Name
Revision
Date
Page
93010350.EN_A_Junior 4.0 User
Manual_240828_v1.0 - VVVF
1.0
28/08/2024
78 / 90
High speed phase adjustments
High speed “P” gains and “I” time constants are used by the Auto Speed Regulator (ASR) of the inverter
during high speed lift travel. These constants can be adjusted as follows:
Notes:
Increasing the P constant makes response from machinery faster but may cause overshooting or hunting in motor.
Furthermore, due to resonance of machinery or overamplified noise, machinery or motor may produce vibration noise.
On the contrary, decreasing the P constant excessively delays response and may cause speed fluctuation in a long
cycle, taking time to stabilize the speed.
“I” times values (L37 and L39) normally do not need to be changed, unless “P” gains are not enough to achieve optimal
comfort. Setting a small “I” Time constant shortens the integration interval, providing a faster response. On the
contrary, setting a large “I” Time constant lengthens it, having less effect on the ASR. This may help in case of
resonance of machinery generating abnormal mechanical noise from the motor or gears
Stopping phase adjustments
Use the constants of the gains "P" and the times "I", at low speed, to make the final adjustment for the stop
phase:
Notes: In order to let the inverter perform the stopping phase correctly, make sure that operating contactors open
at least 2 sec after brake contactor. If operating contactors open in advance, a shock on the machine may be heard.
PAR.
DESCRIPTION
DEFAULT
SUGGESTED ADJUSTMENTS
Gearless
Geared
L24
“S” Curve setting 6
25%
25%
Speed fluctuations: increase value by 5
L36
“P” Gain constant at high speed
2
10
Speed fluctuations increase value by 0,25
Vibrations: decrease value by 0,25
L37
“I” Time I constant at high speed
0,100 s
0,100 s
Speed fluctuations decrease 0,01
Vibrations: increase value by 0,01
PAR.
DESCRIPTION
DEFAULT
SUGGESTED ADJUSTMENTS
Gearless
Geared
E16
Deceleration time # 9
(Last deceleration ramp)
1,80 s
1,80 s
Increase value by 0,5 to soften last ramp
(max suggested value: 3 sec)
H67
Stop Hold Time
1,5 s
1,5 s
Car unable to stay at floor: increase 0,25
Important: In “Positioning” Menu :
Delay BRK-DIR <= 2,0 s
Stopping Boost = 1% or 2%
L38
“P” Gain constant at low speed
2
10
Car unable to stay at floor: increase 0,25
Vibrations: decrease value by 0,25
L39
I” Time I constant at low speed
0,100 s
0,100 s
Car unable to stay at floor: decrease
value by 0,01
Vibrations: increase value by 0,01
L83
Brake Control (OFF delay time)
(specifies the delay time between stop
speed and deactivation of the brake signal)
0,3 s
0,1 s
Larger Brakes: decrease value by 0,1
Smaller brakes: increase value by 0,1