23
EN
3.4 Limits
In addition to setting the control mode, it is also possible to set limits
for the following variables:
• Voltage limitation (U)
• Current limitation (I) (only for ...H RL1 aund ...H RLP1)
• Power limitation (P) (only for ...H RLP1)
Tab. 2 Effective limits
(*
1
for ...H RL1 and H RLP1, *
2
only for ...H RLP1)
The Thyro-A 1A/3A ... H RL1 and ...H RLP1 also has peak current
limiting (Î=3 x I
nom
) at the phase angle.
3.5 Pulse inhibition
The pulse inhibition (PULSE INHIBIT; terminals X2.1 - X2.2 1.5 mm
2
,
grid 3.5) is activated by opening the pulse inhibition bridge, i.e. the
power unit is no longer triggered. If the pulse inhibition is activated,
the LED “PULSE INHIBIT” lights up red. After switching on or after
pulse inhibition the first Takt-pulse (in Takt operation) takes place
with the Soft-Start function. This is important for the transformer load
if it was previously switched off for an undefined reason (remanence).
For Thyro-A 2A or Thyro 3A the pulse inhibition is only wired to the
master (L1, left).
3.6 Current and voltage transformer
(only for ...H RL1 and ...H RLP1)
For each power unit the power controller has a current transformer
that is wired. The load voltage is obtained from the measuring signal
of the mains voltage.
Secondary control
Final value of the controller
Limits
U U
eff max
I
eff max
1
P
max
1
U
2
U
eff max
I
eff max
1
P
max
1
I
*
1
I
eff max
U
eff max
1
P
max
1
I
2
*
1
I
eff max
U
eff max
1
P
max
1
P
*
2
P
max
I
eff max
1
U
eff max
1
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