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17.7.5 Rear Panel In/Out Connector Pins Function Description J1(A), J2(B), J3(C)
Pin No Function Description
14 TEMP_ALARM
Open collector signal, referenced to pin 3 (Signal Return). On when the internal temperature
of FPS1000 unit is within safe limit, Off approx. 10°C below Thermal shut down. The maximum
sink current is 10mA and the maximum external voltage is 15V.
5 DC_OK
Open collector signal, referenced to pin 3 (Signal Return). On when the output
voltage of FPS1000 unit is higher than Vout ≥ 80% +/-5%. The maximum sink current:
10mA and the maximum external voltage is 15V.
6 V_TRIM
Connection for output voltage trimming of FPS1000 unit. The voltage can be trimmed within
its range specifications.
9 +12V_AUX
Auxiliary voltage output, 11.2~12.5V, referenced to pin 3 (Signal Return). The maximum
load current is 0.25A. This output is not controlled by the On/Off control.
10 CS
Current sharing signal. When FPS1000 units are connected in parallel, the CS pins of the
units should be connected to allow current balance between units.
3 SIGNAL_RETURN
Return for the following control and supervisory signals: On/Off, DC_OK, Over_temperature
Alarm, AC_Fail, Auxiliary 12V supply. The Signal return is isolated from the output terminals.
8 +SENSE
Positive sensing. The +Sense signal should be connected to the positive terminal of the load.
The +Sense and -Sense leads should be twisted pair to minimize noise pick-up effect. The
maximum load wires drop compensation is 1V/wire.
11 AC_FAIL
Open collector signal, referenced to pin 3 (Signal Return). On when the input voltage of
FPS1000 unit is ≥85Vrms. The maximum sink current is 10mA, and the maximum external
voltage is 15Vdc.
2 SCL (I
2
C)
Serial Clock used in the I
2
C interface option. Refer to the I
2
C interface description in the
FPS1000 Instruction Manual.
1 SDA (I
2
C)
Serial Data used in the I
2
C interface option. Refer to the I
2
C interface description in the
FPS1000 Instruction Manual.
7 -SENSE
Negative sensing. The -Sense signal should be connected to the negative terminal of the load.
The -Sense and +Sense leads should be twisted pair to minimize noise pick-up effect. The
maximum load wires drop compensation is 1V/wire.
12 ON/OFF_1 (*1)
Turns the output of FPS1000 unit to On and Off by electrical signal or dry contact between
pin 12 and pin 3 (Signal Return). 0~0.6V or Short: On, 2~15V or Open: Off.
The maximum sink current is 2.6 mA (when using pin#12, it should be disconected from pin#13).
CONNECTOR PINOUT (REAR PANEL VIEW)
15
16
13
4
- LOCAL SENSE
+ LOCAL SENSE
ON/OFF_2 (*1)
On/Off control. To use this input, pin#12 and pin#13 must be shorted together.
Short between On/Off_2 to pin#3: Off. Open On/Off_2: On.
The maximum source current is 1.2mA
ON/OFF LOGIC
SELECT
Input used to select the On/Off control logic.
Short this input to pin#12 when using On/Off_2 as On/Off control.
Leave this input open when using On/Off_1 as On/Off control.
When working in local sense mode, connect -Local Sense to -Sense (pin#7).
When working in Remote sense mode, this input should be open.
When working in local sense mode, connect +Local Sense to +Sense (pin#8).
When working in Remote sense mode, this input should be open.
Note:
*1: On/Off_1 and On/Off_2 are reversed logic inputs.
J1(A), J2(B), J3(C) CONECTOR DESCRIPTION
MALE HEADER: P/N-43045-1600 (MOLEX)
FEMALE HOUSING (PLUG): P/N-43025-1600 (MOLEX)
FEMALE TERMINAL: P/N-43030 (MOLEX)
Rear In/Out connector pins function description (J1), (J2), (J3)
16 9
18
FPS-T1U Instruction Manual