SEW-Eurodrive MOVISAFE DCS B Series

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Manual – MOVIDRIVE® MDX61B Safety Module MOVISAFE® DCS..B Option
6
Configuring the measuring sections
Startup
• Maximum velocity
In the "Maximum velocity" edit box, you can set the maximum velocity of the applica-
tion in the set reference unit. It is used to determine internal calculations.
• Safety-related cut-off thresholds
The basic check is to perform plausibility tests between the two measuring channels
A and B of the DCS..B option to compare the current position and velocity values with
the configurable thresholds.
– The cut-off threshold "s" describes the tolerable position offset between encoder
1 and encoder 2 in the unit of the measuring section.
– The cut-off threshold "v" describes the tolerable velocity offset between encoder
1 and encoder 2 in the unit of the velocity.
Diagnostic functions are provided in the SCOPE function of the MOVISAFE
®
Assist/Config software interface to determine the optimum parameter values of this
application.
• Encoder type
The following encoder types are available:
– SSI absolute
– TTL incremental
– SIN/COS
– Backplane bus inc. (encoder values of MOVIDRIVE
®
B via backplane bus)
• Direction of rotation
In the "Direction" edit box, you can choose between the options "increasing" and
"decreasing" to adjust different counting directions of the encoders.
• SSI data format
The data format of the connected SSI absolute encoder can be selected as data
format. Binary and Gray code data formats are supported.
• SSI clock
In the "SSI clock" selection field, you can choose between "Master mode" and "Slave
mode". The selection is only enabled for SSI absolute encoders.
If the option "master mode" is enabled, the DCS..B pulses automatically. This option
may only be used when the SSI absolute encoder is connected solely with the
DCS..B option.
"Slave mode" must be selected if the SSI absolute encoder is connected both with
the DEH21B and DCS..B options. In this case, the DCS..B option monitors the
signals and the DEH21B option pulses.
INFORMATION
If the option "Backplane bus inc." is selected, parameter P557 of MOVIDRIVE
®
B must
be set to the correct encoder interface, see chapter "P557 DCS actual position source
(page 77)".
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