Siemens SDV7 User Manual

27
Discharging capacitors
After control power has been removed,
discharge stored energy from the capacitors
(refer to Figure 7: Operator controls and
discharging capacitors.
1. Press red Open pushbutton (54.0).
2. Remove the mechanism housing cover
sheet (60.1).
3. Discharge the capacitors (106.2) by
unplugging the connector (105.2) from
the controller board (105.0). Do not
unplug connector (106.3) from the
capacitor boards, or damage to the
capacitor board or the controller board
may occur. The red LED (106.4) on each
of the capacitor boards (106.1) indicates
the state of charge of the capacitors
(106.2). When the capacitors (106.2)
are discharging, the red LEDs are
flashing. This indicates a hazardous
voltage. When the LEDs stop flashing,
the capacitors (106.2) are discharged to
a low voltage.
Hazardous voltages and stored energy.
Will cause death, serious injury or property damage.
Even if the circuit breaker and control circuits have been de-energized for a
long time, the power supply capacitors will maintain significant stored
energy. Always discharge the capacitors before maintenance. Always de-
energize and ground the equipment before maintenance.
Read and understand this instruction manual before using equipment.
Maintenance should be performed only by qualified personnel. The use of
unauthorized parts in the repair of the equipment or tampering by
unqualified personnel will result in dangerous conditions which will cause
death, severe injury or equipment damage. Follow all safety instructions
contained herein.
Stored energy and high speed moving parts.
Will result in serious injury. Fingers can be crushed by the magnetic
actuator.
Do not remove guard panel. Do not operate circuit breaker if guard panel
removed.
Automatic capacitor charging
The controller board (105.0) executes a self-
test of the capacitors (106.2) and checks the
status of the capacitors (106.2). This self-test
runs automatically and regularly. The result of
the self-test is stored in the memory of the
controller board (105.0).

Siemens SDV7 Specifications

General

Brand	Siemens
Model	SDV7
Category	Power distribution unit
Language	English