2-24
Series 90-30 PLC Installation and Hardware Manual
–
August 2002
GFK-0356Q
2
100-240 VAC
125 VDC, 50W
50/60HZ 90VA
+
24 VDC
OUTPUT
0.8A MAX.
INPUT
Six-Terminal Board
Factory Jumper
24 VDC Output
For I/O Modules
Input Power
100-240 VAC
125 VDC, 50W
50/60HZ 90VA
+
24 VDC
OUTPUT
0.8A MAX.
INPUT
Five-Terminal Board
24 VDC Output
For I/O Modules
Input Power
Figure 2-15. Power Supply Terminal Boards
Power Supply Overvoltage Protection Devices
The overvoltage protection devices for this power supply are connected internally to pin 4 on the
user terminal board. This pin is normally connected to frame ground (pin 3) with the supplied
jumper strap which is installed at the factory. If overvoltage protection is not required
or
is
supplied upstream, this feature can be disabled by leaving pin 4 unconnected by removing the
jumper strap. Also, this jumper must be removed and external surge suppressors installed in
installations with a “Floating Neutral” input, please see the following section “Special Instructions
for Floating Neutral (IT) Systems” later in this chapter.
If you want to Hi-pot test this supply, overvoltage protection
must be disabled
during the test by
removing the terminal board strap. Re-enable overvoltage protection after testing by reinstalling
the strap.
1
2
3
4
a47086
Jumper Strap Connects
Overvoltage Protection
Devices to Frame Ground
Screw Terminals
on Terminal Board
Frame Ground
Figure 2-16. Overvoltage Protection Devices and Jumper Strap