Riken Keiki PT2-169, Руководство по эксплуатации, Страница: 14 / 65

3 Product Components 3-3. Block diagram
SD-1DGH-AS
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3-3. Block diagram
<Electric Diagram>
Sensor
Controller
(CPU)
POWER INPUT (24 VDC)
Power supply part
1. Gas alarm contact (ALARM)
or
2. Fault contact(FAULT)
or
3. Select either gas alarm or
contact (ALARM/FAULT)
Contact activation
• De-energized
(De-energized at a normal
state)
• ON-ALARM
(Closed contact at an
alarm state)
Alarm contact controller
Display
(POWER) (ALARM)
(FAULT)
Seven-segment LED
(four-digit)
Magnetic operation part
(MENU/ESC) ( ▲ ) ( ▼ ) (SET)
Transmitter
• 4 – 20 mA transmission