3-2 Electric Drives
and Controls
Bosch Rexroth AG PSI 6500.xxx 1070087059 / 02
Electric Connection
3.2 External Secondary Circuit Current Sensor (X3)
Connection: Master-side to X3.
Female connector, 3.5 mm grid, 8 poles, max.
1.5 mm
2
.
The mating male connector is included in the
scope of delivery.
Line length: max. 100 m (with the line type recommended)
Line type: shielded, core cross-section min. 0.75 mm
2
,
(e.g.: 2 x 2 x 0.75 mm
2
LiYCY,
order no.: 1070 913 494)
This input is required
D if the constant current regulation (CCR) is used and the “secondary”
current measurement is parameterized
and/or
D if the monitoring stop is deactivated and the “secondary” current mea-
surement is parameterized.
L The external secondary circuit current sensors may only and exclusively
be connected to the master.
. PSI units are additionally provided with an integrated current sen-
sor for the primary circuit of the welding transformer. This provides
the possibility of selecting secondary or primary current measure-
ment via the user interface.
If current times are greater than 1 sec, the primary current measu-
rement must always be used!
. The type PSI 6500.190 only provides the “primary” current measu-
rement.
X3
1
2
3
4
5
D
Shield
Toroid input
Toroid input
Shield connection to X3 terminal 3 only!
I
tot
Connection of a single secondary-side current sensor
L In case of a failure of the secondary-side current sensor, operation can
be maintained by switching over to the primary current measurement.
This, however, requires that the current must first be scaled after the
switchover!
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