Omron S8M - Page 35

17
Internal Configuration Section 2-2
S8M-CP04-RS (UL Class 2 Output Model)
In addition to the regular cutoff circuits (cutoffs for abnormal current, abnormal
voltage, etc.), the UL Class 2 output model has a cutoff circuit that detects
only overcurrents of 4.0 A or higher and cuts off the output.
S8M-CP04 (Model without Communications)
This model has the same basic functions and configuration as the standard
model, but does not have an RS-232C port so it cannot connect to the Sup-
port Tool.
SD
RD
SG
DC input
power supply
+V
RS-232C
communica-
tions terminals
+
−
+
−
+
−
Tripping alarm output
(TRP)
Alarm output
(ALM)
Over-temperature output
(TMP)
External tripping input
(TRG)
+
−
−V
Power supply
circuit
Communica-
tions circuit
Voltage
detection
Display
circuit
Switches
Temperature
detection
Processing
circuit
Thermal fuse
Thermal fuse
Thermal fuse
Thermal fuse
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Fuse
DC branch output 1
Fuse
Fuse
Fuse
−V
+V
+V
−V
+V
−V
+V
−V
DC branch output 2
DC branch output 3
DC branch output 4
Current-detec-
tion resistor
Cutoff
circuit
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Current-detec-
tion resistor
Cutoff
circuit
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Current-detec-
tion resistor
Cutoff
circuit
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Current-detec-
tion resistor
Cutoff
circuit
DC input
power supply
+V
+
−
+
−
+
−
Tripping alarm output
(TRP)
Alarm output
(ALM)
Over-temperature output
(TMP)
External tripping input
(TRG)
+
−
−V
Power supply
circuit
Voltage
detection
Display
circuit
Switches
Temperature
detection
Processing
circuit
Thermal fuse
Thermal fuse
Thermal fuse
Thermal fuse
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Fuse
DC branch output 1
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Fuse
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Fuse
Current-detec-
tion resistor
Cutoff
circuit
Current-lim-
iting circuit
Fuse
−V
+V
+V
−V
+V
−V
+V
−V
DC branch output 2
DC branch output 3
DC branch output 4