12.2 Parallel operation of two ZArec4C 013
It is possible to operate two ZArec4C in parallel.
12.2.1 Series circuit of inputs and outputs
The "EN" digital inputs and the "/ERR" digital outputs on the two ZArec4Cs must be connected in
series.
12.2.2 Parameterisation of the ZAdyn
In the Control menu, a second digital output must be configured to ZR_EN in addition to the digital
output f_O5.
12.2.3 Nominal voltage for the regeneration operation
The following values are to be entered for the regeneration operation nominal voltage:
ZArec4C 1 ZArec4C 2
R
ated voltage 720 V 710 V
The values are entered in the parameter Basics / U_DC_RF.
Basic settings
|
-
" U_DC_RF 630 V
|
-
" 720
DC nominal voltage
12.2.4 Engagement voltage of the brake resistor
A higher brake resistor engagement voltage value must be entered than when using just one
ZArec4C.
ZArec4C 1 ZArec4C 2
B
C engagement
voltage offset
5 V 15 V
These values (offsets) are entered in the parameter Power component / U_BC_OF.
Power component
|
-
" U_BC_OF 5V
|
-
" 5
BC engagement voltage
offset
12.2.5 Correction factor
The measurement of the ZAdyn intermediate circuit voltage and the ZArec4C intermediate circuit
input voltage may have different results due to tolerances. Therefore the correction factor must be
calculated to synchronise the two values.
Correction factor =
displayed intermediate circuit voltage of the ZAdyn / ZETADYN
displayed input voltage of the intermediate circuit of the ZArec4C
The intermediate circuit voltage of the ZAdyn is displayed in Info menu page 07: Brake Chopper of
the ZAdyn in line 3
Brake Chopper - - - - -
07
Internal 1.4kHz BC ·
U_DC:_ _ _ _ _ _ 565V
Ampl:_ _ _ _ _ _ 0%
The ZArec4C intermediate circuit input voltage is displayed in Info menu page 06: Info STATE of the
ZArec4C in line 4, "IN:".
Info STATE - - - - - - -
06
STAT_RS: 70 Msg: 0
STAT_BC:110 Err: 0
Udc: 547V IN:545V
Original operating instructions
ZArec4C Special functions
R-TBA14_03-GB 1817 Index 007 Part.-No. 00163436-GB
5
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