28
Specifications Section 2-3
External Output and External Tripping Input Specifications
The S8AS has 4 external outputs: the Tripping Alarm Output (TRP), Under-
voltage Detection Output (LOW), Maintenance Forecast Monitor Output
(LFE), and Over-temperature Output (TMP). It also has an External Tripping
Input (TRG).
I/O Circuit Configuration
Note When a branch output is cut off with the External Tripping Input, it cuts off
power to the branch output even faster than turning OFF the S8AS's power
supply.
TRG+
TRG−
TRP
LOW
TMP
LFE
Output common
Tripping Alarm
Output circuit
Over-temperature
Output circuit
External Tripping
Input circuit
Undervoltage
Detection Output
circuit
Maintenance
Forecast Monitor
Output circuit
Name Circuit configuration I/O specifications
Tripping Alarm Output (TRP),
Undervoltage Detection Out-
put (LOW), Maintenance Fore-
cast Monitor Output (LFE) and
Over-temperature Output
(TMP)
Note A photo relay with a
photo MOS-FET and
infrared diode coupling
is used.
Output circuit 30 VDC and 50 mA
max.
External Tripping Input (TRG) Input circuit 19.2 to 30.0 VDC
Minimum signal width:
10 ms
TRP
LOW
LFE
TMP
COM
From internal power supply circuit
Signal from CPU
TRG (+)
TRG (−)
To Next Page
Loading...
Need help?
General
