Options 09.02
9-6 Siemens AG 6SE7087-6AK85-1AA0
Rectifier/Regenerating Unit Operating Instructions
9.5 Mechanical design
Option Description
Busbar option Size E For interconnecting the rectifier and regenerative bridges in operation without
autotransformer
(see Chapter 2, Figure 2.6)
Front door, bottom and
cover plates, and PC
covers for Size E
Increases degree of protection to IP20
EMC screened housing For screened cables
Table 9.6 Mechanical options
9.6 RS485 interface (PTP1)
The SST2 serial interface for the basic unit is not available until submodule A2 (C98043-A1690-L1) has been
plugged into the CUR electronics module (A10).
With the parameterization P688=1, the peer-to-peer transmission protocol is implemented on SST2.
The RS485 interface cable required for peer-to-peer coupling to a second unit is described in Section 3.8.7.
9.6.1 Order designation
Three different versions of this module (short designation PTP1, item number C98043-A1690-L1, equipment
identifier A2) can be ordered. The order numbers (MLFB) for these versions are:
1. Module PTP1 with two spacers (1 module) MLFB: 6SE7090-0XX85-1NA0
2. Standard package for 12-pulse mode (2 PTP1 modules with two
spacers for each of two units) MLFB: 6SE7090-0XX85-1TA0
3. Retrofitting package for 12-pulse mode (2 PTP1 modules with two
spacers, 2 CUR control electronics modules and two EPROMs
with up-to-date software for two units) MLFB: 6SE7090-0XX85-1TB0
Versions 1 and 2 require a CUR control electronics module of hardware version 06 or higher (indicated on the
fourth number block of the item number on the module: C98043-A1680-L1-06, C98043-A1680-L1-07, ...) and
software version 3.0 or higher (see the label on the EPROM, fourth number block must be 30 or higher:
V98113-A1800-A001-30, V98113-A1800-A001-31, ... The software version can also be read from parameter
r720.01. The contents must be 3.0 or greater).
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