Fig. 24: Trail Current; Fig. 25: Starting Times Of The Fade-Out Time And The Trail Current - Bosch Rexroth PST 6 Serie Betriebsanleitung

1070087088 / 08 | PST 6xxEx
• Trail current:
specifies, whether the transient period after the end of a weld time is
to be taken into account to calculate the effective value (trail current
ON).
If trail current is deactivated, the effective value measurement stops
precisely at the end of the weld time.
Current
0

Fig. 24: Trail current

• A programmed fade‐out time always starts at the beginning of a cur­
rent block and at the beginning of an impulse.
• An activated trail current always starts at the end of a current block
and at the end of an impulse.
1st
block
Fade‐out time:
Trail current:
Fig. 25: Starting times of the fade‐out time and the trail current
The programmed fade‐out time is identical for all weld times and for
"
all welding programs!
Therefore, you should make sure that the fade‐out time is always
shorter than the shortest programmed weld time.
The activated trail current is identical for all weld times and for all wel­
ding programs!
If the amount of heat applied to the spot weld is the exclusive quality
criterion for your application (amount of heat: Q ≈ i
the fade‐out time with value "0" and activate trail current ON.
Bosch Rexroth AG
Information on this product
Weld time
2nd block
279 / 416
Time
Trail current
3rd block
2
x t x R), program