30
/ 36
User Manual
Rev. 1.0 - 28/02/11
PJ1000C/1300C/2000LCD
ELETTRONICA
•
It processes and provides interfacing of the control signals to/from the Panel
Board;
•
It feeds and operates the cooling fans;
•
It feeds and controls the LED indicator board.
7.1.3 Telemetry board
This board provides an I/O interface for the CPU with the outside environment.
All available machine input and output signals are brought to the REMOTE DB25
connector.
Also mounted on this board is the INTERLOCK IN BNC connector which can
disable device power output. When the central pin is closed to ground, output
power is limited to zero until ground connection is removed.
7.1.4 Mains power supply pulse protection
This module is enclosed in a sealed metal case; it features two externally mounted
mains fuses 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, which relays it to the service transformer TR1.
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 set to ON;
• No alarm or fault events present;
• Power output enabled (set to ON) in FNC operation menu;
• RF output power set to over 0W using the edit mode.
7.1.5 PWR Input Measure Board
This card makes two check and measure functions:
- Input power measure, measure sended to interface card that supplies to send
machine in protection mode in case of input power excess.
- Temperature measure.
