Omron S8VK-R Series Safety page 3

Construction and Nomenclature
Nomenclature
10 A Model
S8VK-R10
1
No. Name
1 Input terminal 1 Connect the input 1 lines to these terminals.
2 Input terminal 2 Connect the input 2 lines to these terminals.
3 Ground terminal This is not an earth terminal. Functionality and safety will not be affected even when this terminal is not connected
to the ground.
4 Output terminal Connect the load lines to these terminals.
5 Status indicator: The LED lights when the voltage difference between the two power supplies is 1.2 V or less.
(redundancy OK: Green) If the voltage difference exceeds 2.4 V, the LED will turn OFF. *1
6 Status indicator: The LED lights when the voltage difference between the two power supplies is 50 mV or less. *1
(voltage balance: Green) If you use the S8VK-G 120 W to 480 W(*2), you can assume that the output current from the two power supplies
is balanced when this LED is lit.
With application when the output current is balanced , you can assume that the life expectancy of the two power
supplies will be longer in comparison with application when the output current is not balanced.
7 Signal output terminal: The photo switch contact turns ON when the voltage difference between the two power supplies is 1.2 V or less.
redundancy OK The photo switch contact turns OFF when the voltage difference between the two power supplies exceeds 2.4 V. *1
(photo switch)
*1. Refer to Operation Timing for an illustration of operation.
*2. Contact your OMRON representative before you use this function for any model other than the S8VK-G.
Operation Timing
Input voltage 1
Input voltage 2
Output voltage
Voltage balance indicator
LED lit and photo switch
Redundancy OK contact ON.
(indicator and signal output)
LED not lit and photo switch
contact OFF.
20 A Model
1
2
3
5
6
7
4
Vin
+2.4 V
+1.2 V
+50 mV
Vin
−50 mV
−1.2 V
−2.4 V
Vout
LED lit.
LED not lit.
S8VK-R20
2
3
5
6
7
4
Function
S8VK-R
3