Current Limiting; Current Limit Value; Resistance Limitation; Resistance Limit Value - JUMO 709061/8-01-032 Operating Manual

Current limiting

Current limit value

Resistance limita-
tion
Resistance limit
value
Load type resis-
tance limitation
Dual energy man-
agement
V1.04/EN/00561071 [Thyristor Power Switch TYA 201]
Value / settings
No
Yes
10 % to max. load
current +10 % of the
device type
No
Yes
0 to 999.99 Ω
Resistive load
Transformer load
Switched off
Device1
Device2
k
/ bold = default setting
Description
No current limiting
Current limiting is implemented via phase-angle control. In this
case, the load current is monitored on the basis of the select-
ed current limit value and only the phase control angles that
do not cause the current limit value to be exceeded are per-
mitted.
If burst-firing operation is active, current limiting only operates
during the soft start that is realized via time-limited phase an-
gle control.
It is also possible to activate an external current limit value
via a digital input.
v Chapter 5.1.6 "Digital inputs"
Varies depending on the device type.
For 20 A power controllers, 2 to 22 A can be selected.
v Chapter 1.3 "Order details"
Note:
Resistance limitation is only possible in the case of power
controllers with integrated subordinate control loop P (code
order code
001 in the
No limitation through load resistance
The load resistance is monitored to ensure the selected resis-
tance limit value is not exceeded if the load current is > 5% of
the power controller's nominal current.
For phase-angle control, limitation is implemented through the
phase control angle α.
For burst-firing operation, limitation is implemented through
the ON/OFF ratio of the sine waves.
v Chapter 6.6 "Resistance limitation (r-control)"
If the load resistance exceeds this value, it is limited by phase-
angle control or limitation of the switched sine waves.
Note:
This parameter only appears in the phase-angle control oper-
ating mode.
This setting is to be used for purely resistive loads.
This setting is only to be used for a resistive load via a trans-
former.
This parameter only appears with the following settings:
Cycle time: fixed (500 ms),
Operating mode: burst-firing operation.
This setting allows 2 devices to be configured so that they do
not simultaneously draw power from the mains voltage at
small output levels.
This prevents current peaks.
v Chapter 6.4 "Dual energy management"
5 Configuration
).
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