Installation RSP 20/25/30/35
Release
 
15
 
12/2017
35
2.5 Connecting the terminal blocks
Note: The supply voltage is connected to the device casing through 
protective elements exclusively.
2.5.1 Supply voltage with the characteristic value K9
You will find information on the characteristic values here:
“Device name and product code” on page 19
Figure 3: Supply voltage with the characteristic value K9: 3-pin terminal block with 
screw locking
 WARNING
ELECTRIC SHOCK
 
Before connecting the electrical wires, always verify that the requirements 
listed are complied with.
See “Requirements for connecting electrical wires” on page 6.
 
Never insert sharp objects (small screwdrivers, wires, etc.) into the 
connection terminals for electric conductors, and do not touch the terminals.
 
Failure to follow this instruction can result in death, serious injury, or 
equipment damage.
Type of the voltages 
that can be 
connected
Specification of the supply 
voltage
Pin assignment
DC voltage Rated voltage range DC
60 V DC ... 250 V DC
Voltage range DC including 
maximum tolerances
48 V DC ... 320 V DC
+/L Plus terminal of the supply voltage
−/N Minus terminal of the supply 
voltage
Protective conductor
Table 6: Supply voltage with characteristic value K9: type and specification of the 
supply voltage, pin assignment
N
L