Mounting and connecting the HMI device
4.2 Connecting the HMI device
MP 377 15" Touch daylight readable (WinCC flexible)
Operating Instructions (Compact), 04/2009, A5E02532357-01
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4.2
Connecting the HMI device
4.2.1
Overview
Requirement
These are the requirements:
●
The HMI device must be mounted according to the specifications of these operating
instructions.
●
Always use shielded standard cables.
Standard cables are also available at the following Internet address:
"
http://mall.automation.siemens.com
"
There you select "Products".
Connection sequence
NOTICE
Observe the connection sequence
Failure to do so may result in damage to the HMI device.
Note the connection sequence for the HMI device.
Connect the HMI device in the following sequence:
1.
Equipotential bonding
2.
Connecting the power supply of the fans
3.
Connecting the power supply of the HMI device
4.
PLC
5.
Configuring PC as necessary
Disconnect the HMI device from the terminals in reverse order of connection.
NOTICE
Do not switch on the HMI device in case of condensation
Humidity can show up as condensation on or in the HMI device when the HMI device is
transported at low temperatures or in case of extreme variations in temperature.
The HMI device must have acquired ambient temperature before it is put into operation. Do
not expose the HMI device to direct radiation from a heater in order to warm it up. If
condensation has developed, wait approximately four hours until the HMI device has dried
completely before switching it on.
