Siemens 620 appendix DC Port of the Power Supply Unit 85W, Pin Row a Description Row B

Hardware Information

DC Port of the Power Supply Unit 85W

The power supply unit has a connector (X2) through which all the signals on the DC side are connected with the motherboard.

Pin	Row A	Description	Pin	Row B	Description
No.			No.
1	PS_PWROK	Power Good Signal	1	PS_PWROK	Power Good Signal
2	TTY_VCC	Potential–free VCC (15V ±	2	TTY_VCC	Potential–free VCC (15V ±
		3V) for TTY port			3V) for TTY port
3	TTY_GND	TTY_GND	3	TTY_GND	TTY_GND
4	PS_NAU_N	Power failure early warning	4	PS_NAU_N	Power failure early warning
		alarm			alarm
5	GND	GND	5	GND	GND
6	P12V	+12V	6	P12V	+12V
7	V_DC	for processor module	7	V_DC	for processor module
8	N12V	-12V	8	N12V	-12V
9	GND	GND	9	GND	GND
10	GND	GND	10	GND	GND
11	P3V3	+3.3V	11	P3V3	+3.3V
12	P3V3	+3.3V	12	P3V3	+3.3V
13	GND	GND	13	GND	GND
14	GND	GND	14	GND	GND
15	GND	GND	15	GND	GND
16	GND	GND	16	GND	GND
17	P5V	+5V	17	P5V	+5V
18	P5V	+5V	18	P5V	+5V
19	P5V	+5V	19	P5V	+5V
20	P5V	+5V	20	P5V	+5V

SIMATIC Box PC 620 Manual	7-25
A5E00131465-01