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FPS-S1U Instruction Manual
10.7.3 Making the load connections
!
WARNING
Hazardous voltages may exist at the outputs and the load connections
when using a power supply with a rated output greater than 40V. To
protect personnel against accidental contact with hazardous voltages,
ensure that the load and it's connections has no accessible live parts.
Ensure that the load wiring insulation rating is greater than or equal to
the maximum output voltage of the power supply.
The load wires should be properly terminated with terminals securely attached. DO NOT use unterminated
wires for load connection at the FPS-S1U.
10.7.4 Rear panel description
1
2
3
4
5
1
4. DIP switch for I C option address setting. Refer to Chapter 14 for details.
Fig. 10-1: FPS-S1U Rear panel
1. Mounting brackets. Use M6x12 screws to fix the FPS-S1U to the rack.
2: DB25 connector for control and monitoring signals.
3: Output voltage terminals. Use M6x16 screws and M6 lug to connect the load wire. The recommended
tightening torque is 42~56Kgf.cm.
2
5. IEC320 AC inlets, shown for FPS-S1U rack. For FPS-S1U/P, there are no IEC320 inlets on the rack.
10.7.5 Control and monitoring signals connector
Pin No Function
1 V_TRIM_B
Description
Connection for output voltage trimming of FPS1000 unit "B". The voltage can be
trimmed within its range specifications.
2
TEMP_ALARM_B Open collector signal, referenced to pin 11 (Signal Return). On when the internal temperature
of FPS1000 unit "B" 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.
3
DC_OK_B
Open collector signal, referenced to pin 11 (Signal Return). On when the output voltage
of FPS1000 unit "B" is higher than ≥ 80%+/-5%. The maximum sink current: 10mA
and the maximum external voltage is 15V.
4
TEMP_ALARM_A Open collector signal, referenced to pin 11 (Signal Return). On when the internal temperature
of FPS1000 unit "A" 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
6
7
8
ON/OFF_A
DC_OK_A
V_TRIM_A
+12V_AUX
Turns the output of FPS1000 unit "A" to On and Off by electrical signal or dry contact
between pin 5 and pin 11 (Signal Return). 0~0.6V or Short: On, 2~15V or Open:
Off. The maximum source current is 2.6mA.
Open collector signal, referenced to pin 11 (Signal Return). On when the output
voltage of FPS1000 unit "A" is higher than V out ≥ 80%+/-5%. The maximum sink
current: 10mA and the maximum external voltage is 15V.
Connection for output voltage trimming of FPS1000 unit "A". The voltage can be
trimmed within its range specifications.
Auxiliary voltage output, 11.2~12.5V, referenced to pin 11 (Signal Return). The
maximum load current is 0.25A. This output has built in Oring diode and is not controlled
by the On/Off control.
27
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