4
INSTALLATION INSTRUCTION
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© 2020 Bel Power Solutions & Protection
BCM.00428_AC
PIN ALLOCATION
Unit:
FCI Connectors P/N 51939-768LF Note: A1 and A2 are Trailing Pin (short pins)
Counterpart:
FCI Connectors P/N 51915-401LF
For Main Output Pins, see section 15 of Datasheet BCD.00833
PIN
NAME
DESCRIPTION
Output
3,4
V1
+12 VDC main output
1,2
PGND
+12 VDC main output ground
Input Pins
P1
LIVE
AC Live Pin / Positive
P2
N.C
No metal pin connection
P3
NEUTRAL
AC Neutral Pin / Negative
P4
N.C.
No metal pin connection
P5
P.E.
Protective Earth Pin
Control Pins
A1
PSKILL
Power supply kill (trailing pin): active-
low
B1
PWOK_L
Power OK signal output: active-low
C1
INOK_L
Input OK signal: active-low
D1
PSON_L
Power supply on input: active-low
A2
PRESENT_L
Power supply present (trailing pin):
active-low
B2
SGND
Signal ground
1)
(return)
C2
SGND
Signal ground
1)
(return)
D2
SGND
Signal ground
1)
(return)
A3
SCL
I2C clock signal line
B3
SDA
I2C data signal line
C3
SMB_ALERT_L
SMB Alert signal output: active-high
D3
ISHARE
V1 Current share bus
A4
EEPROM_WP
EEPROM write protect
B4
RESERVED
Reserved
C4
V1_SENSE_R
Main output negative sense
D4
V1_SENSE
Main output positive sense
A5
VSB
Standby positive output
B5
VSB
Standby positive output
C5
VSB_GND
Standby Ground
1)
D5
VSB_GND
Standby Ground
1)
1)
These pins should be connected to PGND on the system.
