Omron EJ1

9
Internal Block Diagrams Section 1-3
1-3 Internal Block Diagrams
TC4
TC2
Switch
inputs
Indicators
EEPROM
Main input 1
Main input 2
Main input 3
Main input 4
Temperature/an-
alog input circuit
Temperature/an-
alog input circuit
Temperature/an-
alog input circuit
Temperature/an-
alog input circuit
Waveform
shaping
circuit
Waveform
shaping
circuit
Waveform
shaping
circuit
Waveform
shaping
circuit
Drive
circuit
Pulse voltage
outputs
Control output 1
Drive
circuit
Pulse voltage
outputs
Control output 2
Drive
circuit
Pulse voltage
outputs
Control output 3
Drive
circuit
Pulse voltage
outputs
Control output 4
Port A commu-
nications circuit
Port B commu-
nications circuit
G3ZA commu-
nications circuit
G3ZA communications
Connector between Units
Connector between Units
Internal buses 1 to 3
24 VDC
Microcomputer
Switch
inputs
Indicators
EEPROM
Main input 1
Main input 2
Temperature/an-
alog input circuit
Waveform
shaping
circuit
Drive
circuit
Pulse voltage
outputs
Control output 1
Drive
circuit
Pulse voltage
outputs
Control output 2
Drive
circuit
Control output 3
Drive
circuit
Control output 4
Port A commu-
nications circuit
Port B commu-
nications circuit
G3ZA commu-
nications circuit
G3ZA communications
Connector between Units
Connector between Units
Internal buses 1 to 3
24 VDC
Microcomputer
Waveform
shaping
circuit
Waveform
shaping
circuit
Waveform
shaping
circuit
Waveform
shaping
circuit
Waveform
shaping
circuit
Temperature/an-
alog input circuit
: Functional isolation
CT input 1
CT input 2
CT input circuit
CT input circuit
Event input 1
Event input 2
Event input
circuit
Event input
circuit
Transistor
outputs
Transistor
outputs