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User Manual
Rev. 1.0 - 20/06/08
PJ500C-LCD, PJ700C-LCD & PJ1000light
1.
Surge Protection module
(see description in chap. 8.1.1): protects the
machine from possible voltage surge events and electric discharges in the
power mains.
2.
Power amplifier supply unit:
provides adequate power supply for RF power
amplifier modules. It is a switching power supply unit with PFC full range; for
details of the PFC and converter modules, please see chapters 8.1.2 and 8.1.3,
respectively.
3.
Service power supply unit:
provides adequate power supply for all modules
except RF power modules. Major components of this 50-Hz transformer-based
power supply unit are:
-
Power switch
-
Service fuse
-
Mains voltage selector
-
Service transformer
NOTE: Please see chapter 5.1 for power supply unit settings.
8.1.1 Mains power supply pulse protection (SLSRGPRPJ1KM)
This module is enclosed in a sealed metal case (see figure 9.1); it features two
externally mounted mains fuses (figure 6.2) and accommodates a bank of surge
arresters that protect the machine from any surge events in the power mains.
Mains voltage is brought from this module to the main Power switch on the front
panel (figure 6.1), which relays it to the service transformer TR1 (figure 9.2).
Inside the surge protection module, a suitable 24VDC relay controlled via the
interface board isolates (single line) mains voltage to be fed to the power amplifier
power supply unit (PFC module). This way, mains power supply to PFC is enabled
when these requirements are met:
• POWER switch on front panel (figure 6.1) set to ON;
• No alarm or fault events present (see chapter 5.3.4);
• Power output enabled (set to ON) in FNC operation menu (menu 4, see chapter
5.3.1);
• RF output power set to over 0W using the edit mode (menu 2, see chapter
5.2).
8.1.2 PFC unit (PFCPSL1000)
The PFC unit is a rectifier that modulates absorbed current to ensure that the wave
is sinusoidal as much as possible and achieve a 99% power factor.
The PFC unit can operate on 115 VAC or 230 VAC input voltage. It features a
voltage selection block that normally does not require setting: see chapter 5.1.2
for a detailed description.