JUMO 709061/8-01-020, Operating Manual

Page: 62 / 125

5 Configuration
60 V1.04/EN/00561071 [Thyristor Power Switch TYA 201]
Yes "Yes" means that a soft start with phase-angle control or
burst-firing is performed after power ON.
Soft start type With phase-angle
control This parameter only appears if soft start is set to "Yes".
Soft start type "With phase-angle control" is available in
phase-angle operation and in burst-firing operation.
Phase-angle operation:
Starting from 180 °, the phase control angle
α
is steadily re-
duced until the correct phase angle for the default setpoint
value is reached.
Burst-firing operation:
Starting from 180°, the phase control angle
α
is steadily re-
duced until a full wave has passed through.
This ends the soft start and the device switches to burst-firing
operation.
Note: If the output level is reduced to 0 % for longer than 8
seconds, a soft start is initiated again as soon as the output
level is increased once more.
If current limiting is activated during the soft start phase, the
duration of the soft start is extended because the phase con-
trol angle cannot be reduced further during current limiting.
With burst firing This setting is available in burst-firing operation mode with a
fixed cycle time and with the fastest possible cycle time.
During the soft start time, the ON/OFF ratio is
increased from 0 to a maximum of 100 %.
Soft start duration 1 to 65535 s Specifies the duration of the soft start.
Note:
Due to the system, the soft start duration is at least 4 s when
current limiting is switched on, even if a shorter time is config-
ured as the soft start duration.
Value / settings Description
k
/ bold = default setting
u
t
S o ft s t a rtz ei t
u
t
Cycle t ime