Spellman SLS SERIES, Инструкция по эксплуатации

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SLS SERIES MANUAL 19 118132-001 RevA
Program voltages are typically ramped up to set level by a
slow start circuit.
An arc intervention circuit provides sensing, quench and
indications of arc conditions. Consult the chapter three
for a detailed description of the arc sense control.
Current feedback is generated via the use of a current
sense resistor located on a printed circuit board in the
High Voltage Stack Assembly. Calibrated feedback is
then sent to the applicable circuitry located in the inverter
rack.
U12 and U13 circuits provide visual indication of the
voltage control mode and current control mode. These
signals are sent to the FRONT PANEL ASSEMBLY for
front panel status indication.
The resonant control circuitry consists of a voltage to
frequency and a voltage to pulse width converter. U17
generates all frequency and pulse width control signals.
U16 provides specific control functions for the resonant
control.
Power supply inhibit circuits are provided by U22 and
relay K3. System Fault control and indication is provided
by U19, U20 and U21, and associated circuitry.
Diagnostic signals are latched and then sent to the
FRONT PANEL ASSEMBLY for status indication.
4.7 Front Panel Assembly
Front Panel controls, meters and status indications are
connected to the FRONT PANEL PWB. The FRONT
PANEL PWB interfaces directly to the
CONTROL/POWER PWB via the use of a mass
terminated ribbon connecter.
4.8 Options
Due to the many variations of models and options
provided in the SLS Series, details of actual circuits used
may differ slightly from the above descriptions. Consult
Spellman’s Sales Department for questions regarding the
principles of operation for the SLS Series.