RH CGS-240, Руководство пользователя

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Subsystems
CGS-240 Manual 6/15/2021
Page 57 of 148
POWER SUPPLY UNIT RELAY
Output A5 of the ECB Main Controller board activates SSR6. When activated, SSR6 applies AC power to the 12VDC
power supply, PS2, and the 24VDC power supply, PS3. The 12VDC power supply powers the monitor and the
24VDC power supply powers all other functions within the machine.
MAIN POWER RELAYS
The AC main power relays, SSR7 and SSR8, are used to apply power to the
rest of the system. They are activated through 1 of 2 methods. Method 1:
The 5V power supply, PSU1, applies 5V power to activate the relays via the
front panel power switch, just below the monitor. Method 2: If the
computer is up and running, it also provides a 5V signal to keep the relays
activated.
SSR7 and SSR8 are initially turned on by the front panel power switch but
are allowed to remain on by the computer. Now, if the front power panel
switch is then turned off, the two SSR’s remain on because they are
remaining activated by the computer at that time. Once the computer shuts
itself off, it removes the power from the SSR activation and those two
relays shut off, removing AC power from the rest of the system. When SSR7
and SSR8 are off, the only portion of the system activated is just the 5V
power supply.
6.1.5 DC RELAYS
There are two DC relays used for powering heaters within the system. These
two heaters provide power to heat the outer windowpane when needed,
and/or the window frame.
DC RELAY 1, DCR1
The DC relay 1, DCR1, is activated by the main controller boards A5 output.
When activated, DCR1 applies 24V DC power to the window outer pane
heater.
DC RELAY 2, DCR2
DCR2 is activated by the main controller board, A6 output. When activated,
DCR2 provides 24V DC power to heat the window frame.
6.1.6 CHAMBER LIGHT
The chamber is illuminated by an LED strip mounted on the outside of the window. It is powered by 24VDC
through ECB RLY 14. When the light is turned on, the ECB RLY 14 sources 24VDC to active the light. An LED at RLY
14 also indicates the relay status. When the LED is on, the chamber light is on.
Figure 6.7
Figure 6.6