TOA Electronics FPS1000-32, FPS1000-24, FPS1000-12, FPS-S1U Signal Return bus at parallel operation

FPS1000 Instruction Manual

6.1.3 Signal Return bus at parallel operation

The Signal Return of each paralleled unit can be connected together to form a common Signal Return bus.

By this way, the control and monitoring signals of the paralleled units can be connected to the same control and monitoring circuitry.

The Signal Return bus can be connected to the -V or -S or +V or -S or float. Fig 6-3 shows typical connection of the Signal Return at parallel operation.

FPS1000 #1 AC_FAIL	9, 11, 12
DC_OK
OVER-TEMP
ALARM
SIG.	10
RETURN
FPS1000 #2 AC_FAIL	9, 11, 12
DC_OK
OVER-TEMP
ALARM
SIG.	10
RETURN

FPS1000 #N AC_FAIL 9, 11, 12

DC_OK

OVER-TEMP

ALARM

SIG.	10
RETURN

CONTROL AND MONITORING CIRCUITS

FPS1000 #1 SIGNALS

FPS1000 #2 SIGNALS

FPS1000 #N SIGNALS

SIGNALS RETURN

Fig 6-3: Signal Return connection at parallel operation

6.1.4 Remote On/Off control at parallel operation

The paralleled units can be turned On or Off via a single On/Off control. Refer to Fig 6-4 for typical application. The Signal Return function of all the paralleled units should be connected together to create a common Signal Return bus. The Signal Return bus may be connected to the -V or the +V potential or floated. In any case do not connect the Signal Return bus to different potentials.

FPS1000 #1	ON/OFF	7
	SIG.	10
	RETURN

FPS1000 #2 ON/OFF

7

SIG.	10
RETURN

ON OFF

FPS1000 #N ON/OFF

7

SIG.	10
RETURN

Fig 6-4: Remote On/Off control at parallel operation

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