Bosch PST 6101.321 Technical Information page 65

Electrical connection
<Start_1>
7-22
PST 6101.321 / PSI 6101.321
Activating Start will synchronously start the [Sequence] in the timer (with the first subse-
quent positive half-cycle), and the solenoid valve signal is activated. Together with the
start, the selected program number is taken over. The start signal also triggers off the
pre-squeeze time [1. SQZ]. The start can be cleared again during [1.SQZ] and [SQZ], and
the started [Sequence] can be interrupted. Latching of the [Sequence] only starts with
1.WELD (seam operation without latching).
Figure 17: periodically synchronous start
Start
1.SQZ SQZ 1.WLD 1. CT
Figure 18: Latching of start with single spot and repeat mode
A [Sequence] can be started with or without firing:
- Start with firing turned on
- Start without firing turned on
For firing, please refer to page 7-24.
+
+
-
beginning
possible start-
ing range
2.WLD
Start latching
: [Sequence] with welding current
: [Sequence] without welding current
t
3. CT
3.WLD HLD OFF
1070 080 056-101 (99.09) GB
t
t