Siemens 3TM Operating Instructions Manual page 16

Description
Auxiliary switch
Mechanical closing
latching
Fig. 7 Mechanical closing latching and manual un-
latching (optional)
16
Fig. 6 Terminals A1/A2 and optionally E1/E2 of the electronic controller
The electronic controller also allows the configuration of additional closing and open-
ing delays. If no configuration is selected, only the natural closing and opening time
of the switching device is active. Configuration is done via a 6-pole DIP switch S2
on the electronics assembly (matrix, see Chapter "Configuring the controller", p. 42).
The auxiliary switches are mounted on the side of the operating mechanism box and
are not wired. The wiring is carried out on the customer's premises using screw ter-
minals.
(Applies only to vacuum contactors with closing latching)
When the vacuum contactor is closed, the mechanical closing latching is activated.
The solenoid actuator is held and automatically separated from the supply voltage
once the latching position is reached.
Switching in the de-energised holding mode (supply voltage circuit A1/A2) is carried
out automatically via the electronic controller.
9 Mechanical closing latching (optional)
11 Shunt release Y1 (optional)
12 Push rod for manual unlatching (optional)
14 Manual unlatching with mechanism for push rod or draw bar (optional)
15 Draw bar for manual unlatching (optional, not mounted)
Fig. 8 Mechanical closing latching with shunt re-
lease (optional) - shown without manual un-
latching mechanism
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2019-01-09