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Installation
4083_en_A PHOENIX CONTACT
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Always use conductors that are rated for the operating ambient temperature of 85°C.
Note for IT power distribution systems:
– This product is also designed for IT power distribution system with phase-to-phase volt-
age 230 V.
– This equipment must be connected to an earthed mains socket/outlet.
To connect the power source:
1. Remove the transparent plastic finger-safe cover from the terminal block.
2. If an FL SWITCH EP7400-PS-HV power module is installed in PS1:
a) Connect the ground from the first power source to GND1 terminal screw (pin 2).
b) Connect the Live from the first power source to the PWR1 V+/L terminal screw.
c) Connect the Neutral from the first power source to the PWR1 V-/N terminal screw.
3. If an FL SWITCH EP7400-PS-HV power module is installed in PS2:
a) Connect the ground from the second power source to GND2 terminal screw (pin 6).
b) Connect the Live from the first power source to the PWR2 V+/L terminal screw.
c) Connect the Neutral from the first power source to the PWR2 V-/N terminal screw.
4. Torque the wire-clamp screws of the terminal block connector to 0.5 to 0.6 Nm.
5. Reinstall the transparent plastic finger safe cover back onto the face of the terminal
block.
6. Connect pin 12 to the ground of the chassis.
4.5.2 DC power
1 3 5 7 9 11 13 15
2 4 6 8 10 12 14 16
NO
PE PE PE
NC
+
DC
+
DC
PE = Protective earth
NO = Normally open
NC = Normally closed
Figure 4-7 DC power connections
For 100-240 V DC rated equipment, an appropriately rated DC circuit breaker must be in-
stalled.
– The specification for HV DC breaker is 5A, 2P, 300 VDC (min) Circuit breaker, Thermo-
magnetic or equivalent type. A recommended option for this circuit breaker is: Model
No. CX2-B0-14-450-22A-13G, Molded Case Circuit Breaker, 2P, 5A, 250/500 VDC.
– Wire gauge sizing is to be selected with appropriate design as per the electrical code
for a 60 W, 1-phase device.
1. Remove the transparent plastic finger-safe cover from the terminal block.
2. For an FL SWITCH EP7400-PS-MV or FL SWITCH EP7400-PS-LV power module in
PS1: