TOA Electronics FPS1000-24 12.4 On/Off control, Output voltage trimming, Supervisory signals

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FPS-S1U Instruction Manual

12.4 On/Off control

Fig 12-4 shows typical connection for individual On/Off control of each installed FPS1000 unit. The On/Off control signal is applied to the DB25 connector located at the rear panel (refer to sec. 10.7.5).

When it is desired to control all the installed units simultaneously, it is possible to connect the On/Off control as shown in Fig 12-5.

	FPS-S1U	ON/OFF_A	5
			15
		ON/OFF_B
			25
		ON/OFF_C

ON/ ON/ ON/

OFF OFF OFF

SIGNAL_RET 11

UNIT UNIT UNIT ‘C’ ‘B’ ‘A’

FPS-S1UON/OFF_A ON/OFF_B ON/OFF_C

SIGNAL_RET

5

15

25

11

ON/

OFF

Fig 12-4: Individual On/Off control

Fig 12-5: Single On/Off control

12.5 Output voltage trimming

Refer to Fig 12-6 for output voltage trimming typical application.

FPS-S1U with FPS1000-12 installed:

R2=0.0324*V2out -1.1298*Vout+9.9342

+VR1(KΩ)=5(KΩ)-R2(KΩ)

13

FPS-S1U+S

7

V_TRIM_A R1 V_TRIM_B 1

	V_TRIM_C	10	R2
		22
	-S

-V

Fig 12-6: Output voltage trimming

FPS-S1U with FPS1000-24 installed: R2=0.0785*V2out -5.819*Vout+105.132 R1(KΩ)=20(KΩ)-R2(KΩ)

FPS-S1U with FPS1000-32 installed: R2=0.0463*V2out -4.5805*Vout+109.49 R1(KΩ)=20(KΩ)-R2(KΩΩ)

FPS-S1U with FPS1000-48 installed: R2=0.0497*V2out-7.2795*Vout+259.04 R1(KΩ)=50(KΩ)-R2(KΩ)

12.6 Supervisory signals

Supervisory signals are accessible at the J1-DB25 female connector on the rear panel of the rack. Fig 12-7 shows a typical connection for FPS1000 unit "A" inside the rack.

Units "B" and "C" connections - Reffer to sec 10.7.5.

FPS-S1U		(J1)
	12V AUX	8
FPS-1000		16	10K 10K	Application
Module A	AC_FAIL_A
		6		Monitoring
	DC_OK_A
		4 10K		and Control
	TEMP.ALARM_A
				circuts
	SIGNAL RET 11

FPS-1000 Module B

FPS-1000 Module C

Note: AC_FAIL, DC_OK and TEMP.ALARM are open collector signals.

Fig 12-7: Supervisory signals

12.7 Grounding outputs

Either the positive or negative output terminals can be grounded. To avoid noise problems caused by common-mode current flowing from the load to ground, it is recommended to ground the output terminal as close as possible to the power supply's output. Always use two wires to connect the load to the power supply regardless of how the system is grounded.

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Contents FPS Series 1000W In 1U FPS1000 Series Table of Contents Warranty Limitation of WarrantyWarranty Service DisclaimerFPS1000 Power Supply and FPS-S1U Rack Safety Instructions Safety Symbols FPS1000 Series Specifications Outline Drawings FPS 1000 Series Outline Drawings FPS 1000/P Series Outline Drawings FPS1000 Power Supply Installation Connecting the Load Load WiringCurrent Carrying Capacity Noise and Impedance Effects Inductive loadsMaking the load connections Input/Output connector information Repackaging for ShipmentFunctions and Features Dcok signal ACFail signalRemote On/Off control FPS10004.7KΩRemote Sensing Connecting single load, Local sensing Connecting Single Load, Remote SensingConnecting Multiple loads, radial distribution method Basic Connections for OperationMultiple loads connection with distribution terminals Grounding outputsParallel and Series Operation Parallel operationParallel operation with Remote sensing Output voltage trimming at parallel operationSignal Return bus at parallel operation Remote On/Off control at parallel operationSeries operation Series connection for positive and negative output voltageI2C BUS Interface Option Block diagram of the I2C option Operation and functions 7.4.1. Digital statusEeprom functions Analog functions 4 A/D ScalingOutput current readback Typical application diagram FPS1000FPS1000 Maintenance FPS-S1U 19 Rack Single Output Chapter FPS-S1U Rack Specifications Maximum output powerFPS-S1U Rack Installation FPS-S1U Rack MountingControl and monitoring signals connector Rear panel descriptionSCL I2C Modules location Blank panelsFPS-S1U and FPS-S1U/P Outline Drawings FPS-S1U/P Outline Drawing Basic Connections for Operation FPS-S1U Rack Multiple loads connectionSupervisory signals 12.4 On/Off controlOutput voltage trimming Parallel operation with Remote sensing Signal Return bus at parallel operation Output voltage trimming at parallel operationRemote On/Off control at parallel operation FPS-S1U I2C BUS Interface Option IntroductionAddressing A0, A1, A2 FPS-S1U Maintenance Units under warrantyPeriodic maintenance Adjustments and CalibrationFPS-T1U 19 Rack Triple Output FPS-T1U Rack Specifications ChapterFPS-T1U Rack Installation FPS-T1U Rack MountingFPS-T1U Rear panel J1A, J2B, J3C Conector Description Modules location FPS-T1U and FPS-T1U/P Outline Drawings FPS-T1U/P Outline Drawing Basic Connections for Operation FPS-T1U Rack 19.2 On/Off controlOutput Voltag Trimming Load Series operation FPS-T1U I2C BUS Interface Option Module a Module B Module CFPS-T1U Maintenance