gefran GFX4-IR Configuration And Programming Manual page 60

707
FU. t A
704
bF. ( y
NB: In case of a 3-phase load, you can set a different value from parameter FU.tA for each zone (ex. to control an unbalanced 3-phase load).
SOFTSTART or START RAMP
This type of start can be enabled either in phase control or pulse train mode and acts via control of the conduction
angle. It is enabled with parameter Hd.5.
The softstart ramp starts from a zero conduction angle and reaches the angle set in parameter PS.HI in the time set
in parameter PS.tm, from 0.1 to 20.0 sec.
With parameter Hd.5 (+64), you can configure a linear softstart in power, i.e., starting from zero you reach the power
value corresponding to the maximum conduction angle set in PS.HI. Softstart ends before the set time if power reaches the
corresponding value set in manual control or calculated by PID.
Control of maximum peak current can be enabled with parameter Hd.5 during the ramp phase; peak value is settable
in parameter PS.tA. This function is useful in case of short circuit on the load of loads with high temperature coefficients to
automatically adjust start time to the load.
The softstart ramp activates at the first start after power-ON and after a software reboot. It can be reactivated via
software control by writing bit 108 or automatically if there are OFF conditions for a time exceeding the one settable in PS.oF
(if =0 the function is as if disabled).
The ramp can also be enabled with parameter Hd.5 (+256) after a software shutdown, i.e., zero is reached in the set
time from delivered power.
630
PS. x I
705
PS. t A
629
PS. o f
706
PS. t a
108
Restart of phase softstart ramp
bit
Read state
106
State of phase softstart ramp
bit
107
State of phase softstart ramp
bit
NB: In case of a 3-phase load, you can set a different value from parameter PS.tA for each zone (ex. to control an unbalanced 3-phase
load).
60
R/W Max. limit of RMS current in normal op
R/W Min. number of cycles in BF mode
R/W maximum phase of phase softstart ramp
R/W Duration of phase softstart ramp
Minimum non-conduction time to reacti-
R/W
vate phase softstart ramp
Maximum peak current limit during
R/W
phase softstart ramp
R/W
R
R
0.0 ...999.9 A
1 ...10
0.0 ...100.0 %
0.1 ...60.0 s
0 ...999 s
0.0 ...999.9 A
OFF = Restart not enabled
ON = Restart enabled
OFF = Ramp not active
ON = Ramp active
OFF = Ramp not ended
ON = Ramp ended
Model 30kW 60kW
15.0 30.0
1
5
Model: 30kW 60kW
28.0 56.0
80415F_MSW_GFX4-IR_05-2019_ENG
80kW
60.0
DIP5 = OFF
(resistive load)
DIP5 = ON
(inductive load)
100.0
10.0
2
80kW
84.0