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LPM409 AC-DC Modular Power Supply Data Sheet
5V, 10V, 12V, 20V, 24V, 36V & 48V Single-Output Modules
10V, 20V Dual-Output Modules
- INH_LO -
10
Reference pin to INH_HI
Output - Signals, Features and Indicators description
Modules K, L, M, N
Signal Name
- INH_LO_B -
Output Inhibit
function
- INH_HI_B -
- PG_LO_B -
Output Good
indication
- PG_HI_B -
N/C
N/C
- INH_LO_A -
Output Inhibit
function
- INH_HI_A -
- PG_LO_A -
Output Good
indication
- PG_HI_A -
Pin
1
2
3
4
5
6
7
8
9
10
Description
Reference pin to INH_HI_B
An opto-isolated input with 2-10mA current capability. Apply +(3-15)V on INH_HI_B and
RTN on INH_LO_B (e.g. from the Auxiliary Output 5V) to activate the inhibit function.
INH_HI OPEN OR LOW state ENABLES the module output.
INH_HI HIGH state INHIBIT the module output.
Reference pin to PG_HI_B
Open collector output with 20mA pull-down capability, max. 15V (recommended Rpull-
up=1k, Vcc=5V). Referenced to PG_LO_B.
PG_HI OPEN OR HIGH state indicates that the module output voltage is below lower
regulation limit. A PG_HI fail state turns the GREEN DC OK LED to RED.
PG_HI LOW state indicates that the module output voltage is within normal operation
limits.
Reference pin to INH_HI_A
An opto-isolated input with 2-10mA current capability. Apply +(3-15)V on INH_HI_A and
RTN on INH_LO_A (e.g. from the Auxiliary Output 5V) to activate the inhibit function.
INH_HI OPEN OR LOW state ENABLES the module output.
INH_HI HIGH state INHIBIT the module output.
Reference pin to PG_HI_A
Open collector output with 20mA pull-down capability, max. 15V (recommended Rpull-
up=1k, Vcc=5V). Referenced to PG_LO_A.
PG_HI OPEN OR HIGH state indicates that the module output voltage is below lower
regulation limit. A PG_HI fail state turns the GREEN DC OK LED to RED.
PG_HI LOW state indicates that the module output voltage is within normal operation
limits.
7.5 Visual Alarms description
Alarm Name
Input AC Good
Fan Good
Output Good
LED position
Front panel – LED2
(see Fig.7 )
Front panel – LED1
(see Fig.7 )
Module connector /
rear side
(see Fig.5 and Fig.6 )
Description
ON state LED indicates operation within specified input voltage range.
GREEN LED indicator goes to an OFF condition on PFAIL signal failure state.
ON state LED indicates normal fan operation and no OTP status.
GREEN LED indicator goes to an OFF condition on FAN_FAIL / OTP signal
failure state.
GREEN LED indicates that module output voltage is over minimum regulation
limit.
GREEN LED indicator goes to RED on PG_HI signal failure state.
BCD.00054 Rev. AC, 19-Dec-13
Page 10 of 20
www.power-one.com
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