2. System component
31
Fig. 2.24 SRT012 module internal circuit
Fig. 2.25 SRT012 module front part
RS-485
transceiver
Module connector
State
display/switch
RS-485
transceiver
Internal power
supply
System power supply
(DC24V)
Redundancy I/O bus
Bus A Bus B
Internal CPU circuit
Constant voltage
power circuit
Current output
Resistance detection
Insulation DC/DC
converter circuit
Signal
insulating
circuit
nalog
multiplexer
circuit
V/F converter
circuit
RUN indicator: Illuminates when normal
Alarm indicator: Blinks upon an error
Module address setting switch:
Set the module number 1 to E (1 to 14).
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