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07-02-10-01-E-V0304.doc
Product Manual Type:
637f
47
Pin assignment and functions
Option module RP SBT
2.7.2
Brake control and PTC evaluation
Connector assignment X280
Pin
Designation
Status
1
Supply for brake output and PTC evaluation
Input
2
Reference point for supply
Input
3
Reference point for Brake control
Output
4
Brake control Active ok.
Relais output
5 PTC
Input
6 PTC
Input
Use of the Brake control
The relay output X290.3 serves for the control of holding brakes. This output is functionally identical to the
output X10.23.
The output at X290.3 has the following advantages over X10.23:
The isolation relay contact
control electronics corresponds to the basis isolation. I.e. also brake
installations (which correspond to the basis isolation) without interface relays, while maintaining the
PELV isolation (double) of the drive controller are operated (see X10 connection example chapter 2.3.2)
The brake control possesses an active clamping of over voltages between the two brake connections.
Stronger dimensioning of the brake contact.
Use of the PTC evaluation
The PTC connection serves for the monitoring of the engine temperature. In its function mode it is identical
to the port X30.2/6. The following advantage exists over X30.2/6 :
The isolation evaluation circle
control electronics corresponds to the basis isolation. I.e. also PTC
thermistors (which correspond to the basis isolation) can be evaluated, without waiving the safe separation
to the control electronics.
Block diagram / Connector assignment
Circuit diagram:
Further details see product manual
07-02-10-02-E-V..
