Lenze EDS4900U-REG - Manual (Page 315)

Selection aid
15-23
48XX/49XXSHB0399
15.9 Mains isolation
15.9.1 Tipping with mains isolation
In this application proposal, the power stage is connected to or separated from
the mains through a tipp command (momentary-contact pushbutton S4). Since
the control electronics and the field supply are ready for operation when the mains
switch is on, the tipp command only delays the signal of the mains contactor.
Controller preparation:
( With controllers 4902...4907 (PCB 4902LP, 4903LP or 4905LP), remove
the wire bridge between BR1, BR2, BR3, BR4 and BR5 when no voltage is
applied.
( With controllers 4X08...4X13 (PCB 4908LP oder 4911LP), remove the
bridges BR3, BR4 and BR5 when no voltage is applied.
To get to the bridges to be removes, observe the following steps:
( Open the controller cover (4 fixing screws)
( Loosen 2 screws fixing the flap of the control electronics
( Open flap
Stop!
( Ensure correct phase connection of mains supply.
(Wrong connection leads to fuse tripping).
( The phase angle of the voltages in power stage and control electronics
must be lower than 2
• electrically.
( Before opening or closing the contactor K1, the controller must be
inhibited via the function ”controller enable”. Ith this switching sequence is
not observed, fuses may trip or the fault message ACI may be indicated.
( In tipping operation with K! the electronics remain supplied.
The main switch separate the controller from the mains.
( With this application, a voltage is continuously applied to the field.
Activate standstill excitation (field heating)!
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