Digital Output / Power Supply Board - GE ALPS Instruction Manual

3.3 PRINTED CIRCUIT BOARD MODULES
The Digital Outputs, which are programmable are located on this board. The logic to select and write a digital output is
located on this board. The power supply circuitry is also contained on this board. See the block diagram below.
3
DATA
+12VISO +5VISO
Figure 3–8: BLOCK DIAGRAM OF THE DIGITAL OUPUT / POWER SUPPLY
3-10
+5V
POWER SUPPLY
ALPS Advanced Line Protection System
3 HARDWARE DESCRIPTION

3.3.8 DIGITAL OUTPUT / POWER SUPPLY BOARD

TRIP
RELAY
RELAY
LATCH
RELAY
LATCH
+12V ±12VANA
5 V 20 mA
CHANNEL INTERFACE
+5V
GE Power Management