
III – Hardware architecture
S900–II Configuration
Version 2.1
62
01T01506_1
25.11.99
III – 3. The control cabinet boards
INTERFACE BOARD
BRAKES’BOARD
WATCHDOG BOARD
Interface output
IMM No. 1
Watchdog (WD) relay
and LED
Serial
link
signals
RX
TX
RTS
RS485 RS232
Printer
1
1
1
Serial links
F3 / F31
F4 / F41
F2 F1
KA1KA2
LD7
LD5
LD6
green LED, status of relay KA2
(vertical axis freed)
green LED, status of relay KA1
(speed driver OK)
green LED, indicates that the power
component N°3 is operating correctly
Gate closed (PF)
relay and LED
overtravel
relay and LED
Additional Arm Free
Safety (SBD2) relay
and LED
Arm Free Safety
(SBD) relay and
LED
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