SBC PCD1 Series Manual page 32

Saia-Burgess Controls AG
Socket B1 for intelligent
communication modules or serial
data ports, small terminal
Socket B2 for intelligent communi-
cation modules or serial data ports
Removing the cover exposes components that are sensitive to electrostatic discharges.
Recommendations: Immediately before touching the electronic circuits, briefly touch the
metal housing of the PGU connection. It is safer to use an anti-static wrist band, connected
to the Minus of the system.
I/O modules and I/O terminal blocks may only be plugged in and removed when the
Saia PCD and the external +24 V are disconnected from the power supply.
®
Removing the cover exposes components that are sensitive to electrostatic discharges.
Manual Manual PCD 1 / PCD 2 Series │ D ocument 26 / 737 EN22 │ 2 013-11-26
PCD2.M170/M480
B2 A
B(1)
CPUs and expansion housings
CPU overview
Socket A for serial
data port
or telecommunications/SMS
via modem module on I/O socket
Programming unit (PGU)
or RS-232 serial data port
3
3-15