
Installation
4.4 Installing on the S7-300 standard rail
SCALANCE M804PB
Operating Instructions, 07/2018, C79000-G8976-C496-01
33
4.4
Installing on the S7-300 standard rail
Installation
1.
Place the second housing guide of the device on the top edge of the standard rail
①
.
2.
Press the device down against the standard rail until the spring catch locks in place
②
.
3.
Connect the power supply, refer to the section "Power supply (Page 40)".
4.
Fit the connectors for the digital input and digital output, refer to the section "Digital
input/output (Page 43)".
5.
Connect the device to the local network, refer to the section "Ethernet port (Page 46)".
6.
Connect the device to the automation system, refer to the section "MPI/DP interface
(Page 47)".
7.
Connect the terminal with as short a cable as possible ≤ 150 mm and a large cross
-
sectional area of 1.5 mm² to the functional ground of the system, see section "Terminals
(Page 20)“ and section “Grounding (Page 42)“.
Dismantling
1.
Disconnect all connected cables.
2.
Using a screwdriver, pull down the catch on the rear of the device.
3.
Remove the device from the standard rail.