Installation Manual: PSS 3032
3-5
Screened cables
Interference currents arising from electrical, magnetic or electromagnetic
fields of interference must be diverted to cable screens via the earth bars
connected to the enclosure. Please remember the following:
• Connect the screens with low impedence to the earth conductor.
• Use cables with braided screening, with a minimum cover area of 80%.
• For high frequency areas connect the screen at both ends.
• For low frequency areas connect the screen at one end; this is also valid
when laying cables without equipotential bonding or using foil screens.
• Use metal or metallised plugs to connect cables for serial data transfer.
• The screen must have no connection to the connector housing if it is not
located at the end of the cable.
• At the point where the cable enters the cabinet, connect the screen to
the earth bar, without making a break in the cable. Use metal cable
clamps which cover the screen over a wide surface area.
Take the screen as far as the module, but do not lay it on top of the
module
Suppression of inductive loads
Suppression should not be used to protect the semiconductor outputs.
Miscellaneous
Connecting the programming device
The programming device requires a mains connection in each cabinet.
The mains connection must be connected to the same distributor as the
earth conductor for the cabinet.
Summary of Contents for PSS 3032
Page 2: ...Programmable control systems PSS PSS 3032 Installation Manual Item No 19 891...
Page 7: ...Introduction 1 2 Installation Manual PSS 3032 Notes...
Page 24: ...Installation Manual PSS 3032 5 3 Notes...
Page 39: ...Connecting the Inputs and Outputs 5 18 Installation Manual PSS 3032 Notes...
Page 41: ...Interfaces 6 2 Installation Manual PSS 3032 Notes...
Page 43: ...Appendix 7 2 Installation Manual PSS 3032 Notes...