ABB VM1 Installation And Service Instructions Manual page 10

VM1 - USER MANUAL
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6. Structure
6.1. Drive structure
The drive is of the magnetic type and basically
consists of the magnetic actuator (6) (fig. 4), the
control module (5), the sensors (10), the
capacitor/s (4) and the kinematics which transmit
the movement to the circuit breaker poles.
The actuator (6) acts on the circuit breaker poles
by means of special kinematics. The capacitor/s
(4) provides/provide the energy required for the
operation.
The mechanical operating positions of the circuit
breaker are detected by two due sensors (10).
The basic version of the circuit breaker is fitted
with the following controls and instruments:
• closing pushbutton "I" (8)
• opening pushbutton "O" (9)
• coupling for manual emergency operation (1)
• mechanical position indicator (2)
• mechanical operation counter (3)
• luminous signalling of the "ready" state (7)
(READY).
It is also possible to install auxiliary open/closed
position contacts (11) (accessory on request).
1
2
3
4
Fig. 4
6.1.1. Structure of the control module
The control module (5) of the circuit breaker
consists of:
• a microprocessor
• opto-electrical input couplers
• output relay
• electronic power system for controlling the
actuator coils.
11
5
6
7
8
9
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