S8V-CP
3
Tripping Functions
Current tripping
If the output current of each output exceeds the current tripping, the output is tripped by a semiconductor switch (MOS FET) in accordance with
the current tripping characteristic.
Over voltage tripping
With the S8V-CP0424S, if the input voltage exceeds 28.8 V, all outputs are tripped by a semiconductor switch (MOS FET).
If the input voltage becomes 28.8 V or less, all outputs automatically return to the previous state.
Reset Signal Input (RST)
Turning ON all outputs during in the Current tripping (enable to reset) state is called reset. All output terminals can be reset by an external input.
As shown in the following figure, input a high level signal of 0.5 s or more and reset.
Input voltage: 30 VDC max.
Input impedance: 22 k
Ω
Note: 1.
When Reset signal input terminal is used, a miss operation of reset may occur by a noise coming from the cable. Do not make an instable
potential of Reset signal input terminal.
Alarm Signal Output (ALM1/ALM2)
If any of the output is tripped, the MOS FET relay is turned OFF. The signal output comprises of MOS FET relays and therefore, does not have
polarity.
Input voltage: 30 VDC max., Input current: 50 mA max.
Residual voltage when ON: 2 V max.
Leakage current when OFF: 0.1 mA max.
Note: 1.
Alarm signal output is not equipped with an internal current limiting circuit, so be sure that the current flowing to the alarm signal output
terminals does not exceed 50 mA.
2.
Be sure to check that the Alarm signal outputs are working normally after wiring.
Output Status
The status of each output can be identified by the indicator or alarm signal output.
The status of each output is saved when the power is turned OFF. When the power is turned ON again, the status transits to that saved after
initialization.
All outputs are set to Output ON state by default.
*1.
Each output transits automatically to Current tripping (disable to reset) state according to the Current tripping characteristics.
*2.
The status remains on Current tripping (disable to reset) state during 500 ms to 20 s in order to protect the internal parts from heat.
After that, the status automatically transits to Current tripping (enable to reset) state.
*3.
S8V-CP0424S only
*4.
If an internal fuse blows, or an internal memory error occurs, the output will be disconnected.
*5.
Always remove the cause of the output first and then reset the alarm when abnormal tripping operates.
Indicator
Alarm Signal
Output
Output
Status Name
Status Transition
by Push Button
Status Transition
by Reset Signal Input
Color
Status
---
OFF
OFF
OFF
Initialization
---
---
Green
ON
ON
ON
Output ON
Manually output OFF
---
Yellow
ON
ON
ON
Over current
*
1
Manually output OFF
---
Red
ON
OFF
OFF
Manually output OFF
Output ON
---
Red
Blinking
OFF
OFF
Current tripping (Disable to reset)
*
2
---
---
Yellow
Blinking
OFF
OFF
Current tripping (Enable to reset)
Manually output OFF
Output ON
(transition due to positive
pulse longer than 0.5 s)
*
5
Red
Blinking fast
OFF
OFF
Over voltage tripping
*
3
Internal error detection
*
4
---
---
Reset (Connect)
0.5 s min.
High level
External input
Low level: 0 to 5 VDC
High level: 20 to 30 VDC
S8V-CP
RST
22k
Ω
-VI2
-VI1
