3−4 Electric Drives
and Controls
Bosch Rexroth AG BT 6.190 1070087068 / 01
Assembly and Connection
3.1.2 Connection
To operate, the BT 6.190 requires not only the power supply to X1 but
also communication connection X2 (RS 232 c; connection to X1 of the
weld timer).
Positions of the individual connections:
X2 X3 X1
Type label
PE
X1: power supply input
X2: communication with the weld timer (RS 232 c).
For communication with a PC (download of BT firmware) if
bootstrap mode is active
X3: not assigned
PE: threaded bolt for connection to PE conductor
S1: flush key for activating bootstrap mode
S1
The control terminal may be connected and disconnected when the ti-
mer is switched on.
Communication with the control is usually established automatically
when the X2 is attached if the BT 6.190 power supply (X1) was interrup-
ted earlier.
If the BT 6.190 power supply (X1) was not interrupted earlier, the BT
6.190 reports that the connection to the weld timer can not be establis-
hed. In this case, simply press key
on the BT 6.190 to establish com-
munication.
. The BT 6.190 has been designed, and is therefore especially suita-
ble, for spot seam controls.
If an unsuitable control is connected, the device reports ”Incorrect
SST type!”, including the connected control type, when the con-
nection is established.
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