Siemens SCALANCE W788-1PRO Operating Instructions (Compact page 85

Assignment of the power wires with a hybrid cable 2 x 2 + 4 x 0.34
Wire color code (standard)
Function
Power supply insert module
Assignment of the power wires with an IE FC TP standard cable 4 x 2 GP
Wire color code (standard)
Function
Power supply insert module
White wire of the pair
(1)
Earthing
CAUTION
Damage to the device due to potential differences
There must be no potential difference between the following parts otherwise there is a risk
that the device will be destroyed:
• Ground potential of the power supply and ground potential of the antenna ground.
• Ground potential of the power supply and a grounded housing.
• Ground potential of the power supply and the ground potential of the device connected
to Industrial Ethernet (for example PC, AS-300, AS-400 etc.).
Connect both grounds to the same foundation earth or use an equipotential bonding cable.
SCALANCE W788-xPRO/RR / SCALANCE W74x-1PRO/RR
Operating Instructions (Compact), Release 08/2007, A5E00413342-05
2.3 Different properties for devices with other hardware
Brown Brown
24 V 24 V
1 2
White / blue Blue
(1)
24 V 24 V
1 2
Description
Black Black
Ground Ground
3 4
White / brown Brown
(1)
Ground Ground
3 4
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